:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent: #ef4444;
    --accent-hover: #dc2626;
    --text-main: #334155;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.7);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
}
[data-theme="dark"] {
    --primary: #f1f5f9;
    --primary-light: #e2e8f0;
    --text-main: #cbd5e1;
    --text-light: #94a3b8;
    --bg-light: #0f172a;
    --white: #1e293b;
    --glass: rgba(15, 23, 42, 0.9);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --accent: #ef4444;
}
[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-nav,
[data-theme="dark"] .case-tag {
    color: #ffffff !important;
}
[data-theme="dark"] .hero-section {
    background: linear-gradient(to right, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.4) 100%), url('images/background.jpg') no-repeat center center;
    background-size: cover;
}
[data-theme="dark"] .bg-light {
    background-color: #0f172a;
}
[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95) !important;
    border-bottom: 1px solid #1e293b;
}
[data-theme="dark"] .navbar a,
[data-theme="dark"] .nav-links a {
    color: #ffffff !important;
}
[data-theme="dark"] .logo {
    color: #ffffff !important;
}
[data-theme="dark"] .logo {
    color: #ffffff;
}
.btn-icon {
    background: transparent;
    border: none;
    color: var(--primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.3s, color 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.btn-icon:hover {
    background: rgba(0, 0, 0, 0.05);
}
[data-theme="dark"] #theme-toggle.btn-icon {
    color: #fbbf24;
}
[data-theme="dark"] #theme-toggle.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fbbf24;
}
[data-theme="dark"] .btn-icon {
    color: var(--primary);
}
[data-theme="dark"] .btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary);
}
[data-theme="dark"] #ecg {
    background-color: #0f172a !important;
}
[data-theme="dark"] #ecg h2,
[data-theme="dark"] #ecg .text-gray,
[data-theme="dark"] #ecg h4,
[data-theme="dark"] #ecg p {
    color: #ffffff !important;
}
[data-theme="dark"] .cta-box h2,
[data-theme="dark"] .cta-box p {
    color: #ffffff !important;
}
[data-theme="dark"] .btn-nav {
    background-color: var(--accent) !important;
    color: #ffffff !important;
}
[data-theme="dark"] .cta-box .btn-accent {
    background-color: #ffffff !important;
    color: var(--accent) !important;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}
html,
body {
    overflow-x: hidden;
    width: 100%;
}
body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.6;
}
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}
a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}
ul {
    list-style: none;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}
@media (max-width: 768px) {
    html {
        font-size: 11px;
    }
    .container {
        padding: 0 0.8rem;
    }
    .hero-section h1 {
        font-size: 2.2rem;
    }
    .section-header h2 {
        font-size: 1.8rem;
    }
    .grid-2,
    .grid-3,
    .grid-4 {
        justify-items: center;
    }
    .ecg-item {
        max-width: 280px;
        margin: 0 auto;
        width: 100%;
    }
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    .btn-lg {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    .btn-nav-accent {
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
    }
    .sim-btn {
        padding: 0.6rem;
        font-size: 0.85rem;
    }
    .p-btn {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    .text-link {
        font-size: 0.85rem;
    }
    .close-modal-btn,
    .close-quiz-btn {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }
    .modal-topbar {
        padding: 4px 10px; 
    }
    .modal-topbar-logo {
        font-size: 16px;
    }
    .modal-container {
        width: 100vw !important;
        max-width: 100vw !important;
        height: 100dvh !important;
        max-height: 100dvh !important;
        border-radius: 0 !important;
        margin: 0 !important;
    }
    .modal-content-scroll {
        padding: 0 0 1rem 0 !important; 
        border-radius: 0 !important;
        overflow-x: hidden;
    }
    .modal-content-scroll > *:not([id^="pptx-container"]) {
        padding-left: 0.3rem !important;
        padding-right: 0.3rem !important;
        box-sizing: border-box;
    }
    .pptx-viewer-container {
        margin-left: 0 !important;
        margin-right: 0 !important;
        border-radius: 0 !important;
        border-left: none !important;
        border-right: none !important;
        width: 100% !important;
    }
    div[class^="pptx-inner"] {
        border-radius: 0 !important;
        width: 100% !important;
        aspect-ratio: 20/27 !important; 
        height: auto !important;
    }
    .clase-titulo-principal {
        font-size: 1.3rem !important;
        margin: 0 auto 0.8rem auto !important;  
        width: 94% !important;
        max-width: 94% !important;
    }
    .pptx-viewer-container {
        margin-bottom: 0.5rem !important;
    }
    .cta-section {
        padding: 1rem 0;
    }
    .cta-box {
        padding: 2rem 1rem;
        border-radius: 16px;
    }
}
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}
@media (max-width: 900px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}
.horizontal-scroll-container {
    display: flex;
    overflow-x: auto;
    gap: 2rem;
    padding: 1rem 0.5rem 2rem 0.5rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    align-items: stretch;
}
.horizontal-scroll-container>* {
    flex: 0 0 320px;
    scroll-snap-align: start;
    height: auto;
}
@media (max-width: 768px) {
    .horizontal-scroll-container {
        padding: 1rem calc(50vw - 130px - 0.8rem);
    }
    .horizontal-scroll-container>* {
        flex: 0 0 260px;
        scroll-snap-align: center;
    }
    .cases-slider {
        padding: 1rem calc(50vw - 140px - 0.8rem);
    }
    .case-card {
        flex: 0 0 280px;
        padding: 1.5rem;
        scroll-snap-align: center;
    }
}
.horizontal-scroll-container::-webkit-scrollbar {
    height: 8px;
}
.horizontal-scroll-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}
.horizontal-scroll-container::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
.horizontal-scroll-container::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #b91c1c 100%);
    color: #ffffff !important;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.4);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}
.btn-primary:hover {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 20px -5px rgba(239, 68, 68, 0.7);
}
.btn-secondary {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}
.btn-secondary:hover {
    background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.5);
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}
.btn-lg {
    padding: 1.2rem 3rem;
    font-size: 1.25rem;
}
.btn-sim-open {
    padding: 0.85rem 4.5rem;
    font-size: 1.15rem;
    border-radius: 14px;
}
.btn-accent {
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    color: var(--accent) !important;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
}
.btn-accent:hover {
    background: #ffffff;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    color: #dc2626 !important;
}
.text-link {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}
.text-link:hover {
    gap: 0.5rem;
}
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.logo .fa-heart-pulse {
    color: var(--accent);
}
.logo .accent {
    color: var(--accent);
}
.nav-links {
    display: flex;
    gap: 0.85rem;
    align-items: center;
}
.nav-links a {
    font-weight: 500;
    color: var(--text-main);
    font-size: 0.85rem;
    letter-spacing: 0.01em;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}
.btn-nav {
    background: var(--primary);
    color: var(--white) !important;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-nav:hover {
    background: var(--primary-light);
}
.btn-nav-accent {
    background: linear-gradient(135deg, var(--accent) 0%, #b91c1c 100%);
    color: #ffffff !important;
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.4);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.btn-nav-accent:hover {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 20px -5px rgba(239, 68, 68, 0.7);
}
.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
}
@media (max-width: 1200px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        text-align: center;
    }
    .nav-links.active {
        display: flex;
    }
    .mobile-menu-btn {
        display: block;
    }
}
.hero-section {
    position: relative;
    padding: 8rem 2rem 6rem;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
    background: linear-gradient(to right, rgba(15, 23, 42, 0.8) 0%, rgba(15, 23, 42, 0.2) 100%), url('images/background.jpg') no-repeat center right;
    background-size: cover;
    overflow: hidden;
}
.hero-content {
    max-width: 800px;
    z-index: 2;
}
.hero-section h1 {
    font-size: 4rem;
    color: #ffffff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}
.hero-section p {
    font-size: 1.25rem;
    color: #e2e8f0;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.5);
}
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 1rem;
    background: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-left: 3px solid var(--accent);
    border-right: 3px solid var(--accent);
    color: #f8fafc;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}
.hero-buttons {
    display: inline-flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    justify-content: center;
}
.hero-buttons .btn {
    justify-content: center;
}
.ecg-line-container {
    display: none !important;
}
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 150' preserveAspectRatio='none'%3E%3Cpath d='M0,75 H100 L110,60 L120,90 L130,75 H200 L210,40 L230,140 L250,10 L270,75 H400 L410,60 L420,90 L430,75 H500 L510,40 L530,140 L550,10 L570,75 H800 L810,60 L820,90 L830,75 H1000' fill='none' stroke='%230f172a' stroke-width='2'/%3E%3C/svg%3E");
    background-size: 1000px 100%;
    animation: ecgMove 10s linear infinite;
}
@keyframes ecgMove {
    from {
        background-position: 0 0;
    }
    to {
        background-position: -1000px 0;
    }
}
.content-section {
    padding: 3rem 0;
    content-visibility: auto;
    contain-intrinsic-size: 1000px;
    border-bottom: 2px solid rgba(100, 116, 139, 0.2);
    scroll-margin-top: 100px;
}
.section-header {
    text-align: center;
    margin-bottom: 2.5rem;
}
.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}
.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}
.card {
    background: var(--white);
    padding: 0;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 300px;
}
.card::before {
    display: none;
}
.hover-lift:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
.card-top-bar {
    height: 5px;
    background: linear-gradient(90deg, var(--accent), #ff8a65);
}
.card-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.card-header {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    margin-bottom: 1.25rem !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
}
.card .card-icon {
    width: 44px !important;
    height: 44px !important;
    background: var(--accent, #E53935) !important;
    color: #ffffff !important;
    border-radius: 12px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
    font-size: 1.2rem !important;
    margin: 0 !important;
    box-shadow: none !important;
    transition: transform 0.12s !important;
}
.card:hover .card-icon {
    transform: scale(1.05) !important;
}
.card .badges {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 1px !important;
    flex: 1 !important;
    margin: 0 !important;
    margin-top: 2px !important;
    padding: 0 !important;
}
.card .badge {
    font-size: 10px !important;
    font-weight: 700 !important;
    color: var(--accent, #E53935) !important;
    padding: 3px 10px !important;
    border-radius: 20px !important;
    letter-spacing: 0.04em !important;
    display: inline-block !important;
    border: none !important;
    backdrop-filter: none !important;
    background: transparent !important;
    margin: 0 !important;
    text-align: left !important;
}
.card .badge-filled {
    border: none !important;
    background: rgba(239, 68, 68, 0.06) !important;
    color: var(--accent, #E53935) !important;
    margin-top: 2px !important;
    padding: 3px 10px 3px 5px !important;
    border-radius: 4px 20px 20px 4px !important;
}
[data-theme="dark"] .card .badge-filled {
    background: rgba(239, 68, 68, 0.15) !important;
    color: var(--accent, #ef4444) !important;
}
.card .badge-outline {
    border: none !important;
    background: transparent !important;
    color: var(--accent, #E53935) !important;
    font-size: 8px !important;
    padding: 2px 0 2px 5px !important;
}
[data-theme="dark"] .card .badge-outline {
    color: var(--accent, #ef4444) !important;
}
.card .card-content {
    margin-bottom: 1.5rem;
    text-align: left;
}
.card .card-content h2 {
    font-size: 21px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--primary, #0f172a);
    margin-bottom: 0.65rem;
    text-align: left;
    word-wrap: break-word;
    overflow-wrap: break-word;
}
[data-theme="dark"] .card .card-content h2 {
    color: #ffffff;
}
.card .card-content p {
    font-size: 13.5px;
    color: var(--text-light, #64748b);
    line-height: 1.65;
    text-align: left;
    margin-bottom: 0;
}
[data-theme="dark"] .card .card-content p {
    color: #cbd5e1;
}
.card .divider {
    border: none;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    margin-bottom: 1.5rem;
    margin-top: auto;
}
[data-theme="dark"] .card .divider {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.card .btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    background: var(--accent, #E53935);
    color: #fff !important;
    border: none;
    border-radius: 12px;
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.12s, background 0.12s;
    letter-spacing: 0.01em;
    box-shadow: none;
    transform: none;
}
.card .btn-primary:hover {
    background: var(--accent-hover, #C62828);
    transform: none;
    box-shadow: none;
}
[data-theme="dark"] .card .btn-primary:hover {
    background: var(--accent, #ef4444);
    opacity: 0.9;
}
.card .btn-primary:active {
    transform: scale(0.97);
}
.card .btn-primary svg {
    width: 16px;
    height: 16px;
    stroke: #fff;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}
.empty-class-card {
    flex: 0 0 min(600px, 80vw) !important;
    width: min(600px, 80vw) !important;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: none !important;
    border: 2px dashed #e2e8f0 !important;
    background: var(--card-bg, #ffffff) !important;
    padding: 2.2rem !important;
}
[data-theme="dark"] .empty-class-card {
    border-color: rgba(255, 255, 255, 0.1) !important;
    background: #0f172a !important;
}
@media (max-width: 768px) {
    .empty-class-card {
        flex: 0 0 260px !important;
        width: 260px !important;
        max-width: 260px !important;
        min-width: unset !important;
        margin: 0 auto;
    }
}
.skeleton-card {
    background: var(--white);
    border-color: rgba(0,0,0,0.05);
    pointer-events: none;
    box-shadow: none;
}
[data-theme="dark"] .skeleton-card {
    background: #0f172a;
    border-color: rgba(255,255,255,0.05);
}
.skeleton-box {
    background: #e2e8f0 !important;
    border-radius: 4px;
    animation: skeleton-pulse 1.5s infinite ease-in-out;
}
[data-theme="dark"] .skeleton-box {
    background: #1e293b !important;
}
@keyframes skeleton-pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}
.bg-light {
    background-color: var(--bg-light);
}
.feature-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: row;
    align-items: center;
}
@media (max-width: 600px) {
    .feature-card {
        flex-direction: column;
    }
}
.feature-content {
    padding: 2.5rem;
    flex: 1;
}
.feature-content h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}
.feature-content p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}
.feature-image {
    width: 150px;
    height: 100%;
    min-height: 200px;
    background-color: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.heart-image {
    background: linear-gradient(135deg, #fed7aa 0%, #f9a8d4 100%);
}
.artery-image {
    background: linear-gradient(135deg, #a5f3fc 0%, #bae6fd 100%);
}
.cases-slider {
    display: flex;
    overflow-x: auto;
    gap: 2rem;
    padding: 1rem 1rem 3rem 1rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    align-items: stretch;
}
.cases-slider::-webkit-scrollbar {
    height: 8px;
}
.cases-slider::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}
.cases-slider::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
.cases-slider::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}
.case-card {
    flex: 0 0 380px;
    scroll-snap-align: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #f8fafc;
    border-left: 6px solid var(--accent);
    padding: 2.5rem;
    border-radius: 0 24px 24px 0;
    box-shadow: 0 10px 15px -3px rgba(15, 23, 42, 0.3);
    margin-bottom: 0;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
    display: flex;
    flex-direction: column;
}
@media (max-width: 768px) {
    .case-card {
        flex: 0 0 300px;
        padding: 1.5rem;
    }
}
.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.5), 0 10px 10px -5px rgba(15, 23, 42, 0.3);
}
.case-card h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}
.case-tag {
    background: var(--accent);
    color: #ffffff;
    padding: 0.35rem 0.9rem;
    border-radius: 50px;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: inline-block;
    align-self: flex-start;
    box-shadow: 0 4px 6px rgba(239, 68, 68, 0.3);
}
.case-meta {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 1rem;
    font-style: italic;
}
.case-card p.case-meta+p {
    color: #cbd5e1;
    margin-bottom: 2rem;
    flex-grow: 1;
    line-height: 1.6;
}
.case-card .btn {
    align-self: flex-start;
    margin-top: auto;
}
.bg-dark {
    background-color: var(--primary);
    color: var(--white);
}
.bg-dark .section-header h2 {
    color: var(--white);
}
.bg-dark .text-gray {
    color: #94a3b8;
}
.ecg-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    transition: background 0.3s;
}
.ecg-item:hover {
    background: rgba(255, 255, 255, 0.1);
}
.ecg-preview {
    height: 80px;
    width: 100%;
    margin-bottom: 1rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 20' preserveAspectRatio='none'%3E%3Cpath d='M0,10 L10,10 L15,5 L20,15 L25,10 L40,10 L42,8 L45,10 L50,10' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='1'/%3E%3C/svg%3E");
    background-size: cover;
    background-position: center;
}
.cta-section {
    padding: 4rem 2rem;
}
.premium-cta {
    position: relative;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 5px solid rgba(239, 68, 68, 0.7);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    text-align: center;
    color: var(--text-main);
    box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.08);
    overflow: hidden;
    margin: 0 auto;
    max-width: 1000px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
[data-theme="dark"] .premium-cta {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border-color: rgba(239, 68, 68, 0.85);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
}
.cta-glow {
    display: none;
}
.glow-1 {
    top: -50%;
    left: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(248, 113, 113, 0.25) 0%, transparent 70%);
}
.glow-2 {
    bottom: -30%;
    right: -10%;
    width: 60%;
    height: 120%;
    background: radial-gradient(circle, rgba(251, 146, 60, 0.2) 0%, transparent 70%);
}
.cta-icon-badge {
    width: 60px;
    height: 60px;
    background: var(--accent, #ef4444);
    color: #ffffff;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto 1.25rem;
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.25);
}
[data-theme="dark"] .cta-icon-badge {
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.45);
}
.cta-content h2 {
    font-size: 2.2rem;
    margin-bottom: 0.75rem;
    color: var(--primary);
    letter-spacing: -0.02em;
}
[data-theme="dark"] .cta-content h2 {
    color: #ffffff !important;
}
.cta-content p {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 650px;
    margin: 0 auto 1.75rem;
    line-height: 1.6;
}
[data-theme="dark"] .cta-content p {
    color: #94a3b8 !important;
}
.pulse-btn {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    }
    70% {
        transform: scale(1.02);
        box-shadow: 0 0 0 15px rgba(239, 68, 68, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
    }
}
.small-note {
    font-size: 0.85rem;
    margin-top: 1rem;
    color: #64748b !important;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
footer {
    background: var(--white);
    padding: 4rem 2rem 2rem;
    border-top: 1px solid #e2e8f0;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 3rem;
}
.footer-brand h3 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}
.footer-brand p {
    color: var(--text-light);
    max-width: 300px;
}
.footer-links h4 {
    color: var(--primary);
    margin-bottom: 1rem;
}
.footer-links ul li {
    margin-bottom: 0.5rem;
}
.footer-links ul li a {
    color: var(--text-light);
}
.footer-links ul li a:hover {
    color: var(--accent);
}
.footer-legal {
    width: 100%;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #f1f5f9;
    text-align: center;
    color: #94a3b8;
    font-size: 0.9rem;
}
.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}
.delay-200 {
    animation-delay: 0.2s;
}
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .horizontal-scroll-container>* {
        flex: 0 0 280px;
    }
    .fade-in-up {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}
.modal-content-scroll {
    overflow-y: auto;
    padding-right: 10px;
}
.modal-content-scroll h1 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}
.modal-content-scroll h2 {
    color: var(--primary-light);
    margin: 2rem 0 1rem;
}
.modal-content-scroll h3 {
    color: var(--text-main);
    margin: 1.5rem 0 0.5rem;
    font-size: 1.25rem;
}
.modal-content-scroll p {
    margin-bottom: 1rem;
    line-height: 1.7;
}
.modal-content-scroll ul,
.modal-content-scroll ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}
.modal-content-scroll li {
    margin-bottom: 0.5rem;
}
.modal-content-scroll blockquote {
    border-left: 4px solid var(--accent);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: rgba(239, 68, 68, 0.05);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-main);
}
.modal-content-scroll hr {
    margin: 2rem 0;
    border: none;
    height: 1px;
    background: #e2e8f0;
}
.modal-content-scroll strong {
    color: var(--primary);
}
.badge-red {
    background: var(--accent);
    color: var(--white);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
}
.modal-content-scroll table {
    width: 100%;
    margin: 1.5rem 0;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}
.modal-content-scroll th {
    background: var(--primary-light);
    color: var(--white);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}
.modal-content-scroll td {
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
}
.modal-content-scroll tr:last-child td {
    border-bottom: none;
}
.modal-content-scroll tr:nth-child(even) {
    background: #f8fafc;
}
[data-theme="dark"] .modal-content-scroll h1,
[data-theme="dark"] .modal-content-scroll h2,
[data-theme="dark"] .modal-content-scroll strong {
    color: var(--white);
}
[data-theme="dark"] .modal-content-scroll h3,
[data-theme="dark"] .modal-content-scroll p,
[data-theme="dark"] .modal-content-scroll li {
    color: var(--text-main);
}
[data-theme="dark"] .modal-content-scroll blockquote {
    background: rgba(248, 113, 113, 0.1);
    color: var(--text-main);
}
[data-theme="dark"] .modal-content-scroll hr {
    background: var(--primary-light);
}
[data-theme="dark"] .modal-content-scroll table {
    background: rgba(30, 41, 59, 0.8);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .modal-content-scroll th {
    background: rgba(15, 23, 42, 0.9);
}
[data-theme="dark"] .modal-content-scroll td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .modal-content-scroll tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}
.quiz-btn-container {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    z-index: 1050;
    pointer-events: none;
}
.floating-btn {
    pointer-events: auto;
    border-radius: 50px;
    box-shadow: 0 10px 25px -5px rgba(239, 68, 68, 0.4);
    padding: 0.8rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, #dc2626 100%);
    color: white !important;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    outline: none;
    opacity: 0.95;
    letter-spacing: 0.5px;
}
.floating-btn:hover {
    transform: translateY(-5px) scale(1.05);
    background: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
    color: white !important;
    box-shadow: 0 15px 30px -5px rgba(239, 68, 68, 0.5);
    opacity: 1;
}
.quiz-container {
    max-width: 700px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
}
.close-quiz-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.2s;
}
.close-quiz-btn:hover {
    color: var(--accent);
}
.quiz-header {
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}
[data-theme="dark"] .quiz-header {
    border-bottom-color: var(--primary-light);
}
.quiz-header h2 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}
[data-theme="dark"] .quiz-header h2 {
    color: #ffffff;
}
.quiz-progress {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
#quiz-progress-text {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 600;
}
.progress-bar-bg {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}
[data-theme="dark"] .progress-bar-bg {
    background: rgba(255, 255, 255, 0.1);
}
.progress-bar-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    transition: width 0.3s ease;
}
.quiz-body {
    flex: 1;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    overflow-y: auto; 
    padding-bottom: 1rem;
}
.quiz-question-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}
[data-theme="dark"] .quiz-question-text {
    color: #ffffff;
}
.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.quiz-option {
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 12px;
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    font-size: 1.05rem;
    color: var(--text-main);
    margin-bottom: 0.8rem;
}
.quiz-option:hover {
    background: #e2e8f0;
    transform: translateX(5px);
}
[data-theme="dark"] .quiz-option {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}
[data-theme="dark"] .quiz-option:hover {
    background: rgba(255, 255, 255, 0.1);
}
.quiz-option.selected {
    border-color: var(--accent);
    background: rgba(239, 68, 68, 0.05);
    color: var(--primary);
    font-weight: 500;
}
[data-theme="dark"] .quiz-option.selected {
    background: rgba(239, 68, 68, 0.15);
    color: #ffffff;
}
.quiz-option.correct {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
}
[data-theme="dark"] .quiz-option.correct {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}
.quiz-option.incorrect {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
    opacity: 0.7;
}
[data-theme="dark"] .quiz-option.incorrect {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}
.quiz-option-letter {
    background: var(--white);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    color: var(--text-light);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}
[data-theme="dark"] .quiz-option-letter {
    background: var(--primary-light);
    color: var(--text-main);
}
.quiz-option.selected .quiz-option-letter {
    background: var(--accent);
    color: var(--white);
}
.quiz-option.correct .quiz-option-letter {
    background: #22c55e;
    color: var(--white);
}
.quiz-option.incorrect .quiz-option-letter {
    background: #ef4444;
    color: var(--white);
}
.quiz-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    padding-bottom: calc(env(safe-area-inset-bottom, 1rem) + 5rem); 
    border-top: 1px solid #e2e8f0;
    flex-shrink: 0;
}
[data-theme="dark"] .quiz-footer {
    border-top-color: var(--primary-light);
}
@media (max-width: 768px) {
    .quiz-container {
        padding: 1.5rem 1rem !important;
    }
    .close-quiz-btn {
        top: 0.8rem;
        right: 0.8rem;
        background: var(--bg-light);
        width: 32px;
        height: 32px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
    }
    .quiz-header {
        padding-top: 2.5rem; 
        margin-bottom: 1.2rem;
    }
    .quiz-header h2 {
        font-size: 1.5rem;
        margin-right: 1.5rem; 
    }
    .quiz-question-text {
        font-size: 1.15rem;
        margin-bottom: 1rem;
    }
    .quiz-option {
        padding: 0.8rem 1rem;
        font-size: 0.95rem;
        gap: 0.8rem;
    }
    .quiz-results {
        padding: 0;
        margin-top: -1.5rem;
    }
    .quiz-icon-large {
        font-size: 2rem;
        margin-bottom: 0.25rem;
    }
    .quiz-results h3 {
        font-size: 1.3rem;
        margin-bottom: 0.25rem;
    }
    .quiz-score-circle {
        width: 80px;
        height: 80px;
        margin: 0 auto 0.5rem;
        border-width: 4px;
    }
    .quiz-score-number {
        font-size: 1.5rem;
    }
    .quiz-results-msg {
        font-size: 0.95rem;
        margin-bottom: 1rem;
    }
}
.btn.sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.95rem;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.quiz-results {
    text-align: center;
    padding: 2rem 0;
    animation: fadeInUp 0.5s ease-out forwards;
}
.quiz-icon-large {
    font-size: 4rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}
.quiz-results h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}
[data-theme="dark"] .quiz-results h3 {
    color: #ffffff;
}
.quiz-score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    border: 8px solid rgba(239, 68, 68, 0.1);
}
.quiz-score-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
}
.quiz-results-msg {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.modal-overlay.active {
    display: flex;
    opacity: 1;
}
.modal-container {
    background: var(--white);
    width: 95%;
    max-width: 1000px;
    height: auto;
    max-height: 95vh;
    border-radius: 20px;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    animation: modalSlideUp 0.4s ease-out;
    overflow: hidden;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), margin 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes modalSlideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.modal-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem 0.75rem 1.2rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    background: var(--white);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 20;
}
.modal-topbar-logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.modal-topbar-logo .fa-heart-pulse {
    color: var(--accent);
}
[data-theme="dark"] .modal-topbar {
    border-bottom-color: rgba(255, 255, 255, 0.08);
    background: #1e293b;
}
[data-theme="dark"] .modal-topbar-logo {
    color: #f1f5f9;
}
.close-modal-btn {
    position: static;  
    background: var(--accent);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    color: var(--white);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
}
.close-modal-btn:hover {
    background: var(--accent-hover);
    color: var(--white);
    transform: rotate(90deg);
}
.modal-content-scroll {
    overflow-y: auto;
    padding: 0 2.5rem 3rem; 
    flex: 1;
    border-radius: 0 0 20px 20px;
}
.class-header {
    border-bottom: 2px solid #f1f5f9;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
}
@media (min-width: 900px) {
    body.split-mode #quiz-btn-container {
        display: none !important;
    }
    #quiz-modal.modal-overlay {
        background: transparent !important;
        backdrop-filter: none !important;
        pointer-events: none;
    }
    body.split-mode #content-modal .modal-container {
        max-width: 45vw;
        transform: translateX(-24vw);
    }
    #quiz-modal .modal-container {
        max-width: 45vw;
        transform: translateX(24vw);
        pointer-events: auto;
        animation: none;
    }
    #content-modal .modal-container {
        transform: translateX(0);
        transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), max-width 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
        will-change: transform, max-width;
    }
}
.class-header h1 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-top: 0.5rem;
    line-height: 1.2;
}
.clase-titulo-principal {
    text-align: center;
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.25;
    margin: 0.5rem auto 1.8rem auto; 
    padding: 0 0 1rem 0 !important;
    max-width: 92%;
    width: 92%;
    display: block;
}
.modal-content-scroll h2.clase-titulo-principal::after {
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 80px !important;
}
[data-theme="dark"] .clase-titulo-principal {
    color: #f1f5f9;
}
.badge-red {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
}
.modal-content-scroll h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-left: 1rem;
    border-left: 4px solid var(--accent);
}
.modal-content-scroll h4 {
    font-size: 1.2rem;
    color: #334155;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}
.modal-content-scroll h5 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}
.modal-content-scroll p {
    color: #475569;
    line-height: 1.7;
    margin-bottom: 1rem;
}
.modal-content-scroll ul,
.modal-content-scroll ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: #475569;
}
.modal-content-scroll li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}
.alert-box {
    background: #f8fafc;
    border-left: 4px solid #3b82f6;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}
.alert-box.warning {
    border-left-color: #f59e0b;
    background: #fffbeb;
}
.note-box {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}
.info-card {
    background: var(--white);
    border: 1px solid #e2e8f0;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}
.data-table th,
.data-table td {
    padding: 1rem;
    border: 1px solid #e2e8f0;
    text-align: left;
}
.data-table th {
    background: #f8fafc;
    color: var(--primary);
    font-weight: 600;
}
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}
.tag {
    background: #e2e8f0;
    color: #475569;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.two-column-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem 2rem;
}
@media (max-width: 600px) {
    .two-column-list {
        grid-template-columns: 1fr;
    }
}
.modal-content-scroll img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: block;
    margin-left: auto;
    margin-right: auto;
}
.modal-content-scroll figure {
    margin: 0 0 2rem 0;
    text-align: center;
}
.modal-content-scroll figcaption {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.5rem;
    font-style: italic;
}
.modal-content-scroll table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 2rem 0;
    font-size: 0.95rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}
.modal-content-scroll th {
    background-color: #f8fafc;
    color: var(--primary);
    font-weight: 700;
    text-align: left;
    padding: 1rem 1.5rem;
    border-bottom: 2px solid #e2e8f0;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}
.modal-content-scroll td {
    padding: 1rem 1.5rem;
    color: var(--text-main);
    border-bottom: 1px solid #f1f5f9;
    line-height: 1.5;
    font-weight: 500;
}
.modal-content-scroll tr:last-child td {
    border-bottom: none;
}
.modal-content-scroll tr:nth-child(even) {
    background-color: #fcfcfc;
}
.modal-content-scroll tr:hover td {
    background-color: #f1f5f9;
    color: var(--primary);
}
.modal-content-scroll blockquote {
    margin: 2rem 0;
    padding: 1.5rem 2rem;
    background-color: #f8fafc;
    border-left: 5px solid var(--primary);
    border-radius: 0 12px 12px 0;
    position: relative;
    color: var(--text-main);
    font-style: normal;
}
.modal-content-scroll blockquote p {
    margin-bottom: 0;
}
.modal-content-scroll blockquote strong {
    color: var(--primary);
}
.modal-content-scroll h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    letter-spacing: -0.02em;
}
.modal-content-scroll h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #f1f5f9;
    color: var(--primary);
    position: relative;
}
.modal-content-scroll h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background-color: var(--accent);
}
.modal-content-scroll h3 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: none;
    padding-left: 0;
}
[data-theme="dark"] .modal-content-scroll h1,
[data-theme="dark"] .modal-content-scroll h2,
[data-theme="dark"] .modal-content-scroll h3,
[data-theme="dark"] .modal-content-scroll h4,
[data-theme="dark"] .modal-content-scroll strong {
    color: var(--primary);
}
[data-theme="dark"] .modal-content-scroll p,
[data-theme="dark"] .modal-content-scroll ul,
[data-theme="dark"] .modal-content-scroll ol {
    color: var(--text-main);
}
[data-theme="dark"] .class-header {
    border-bottom-color: #334155;
}
[data-theme="dark"] .modal-content-scroll h2 {
    border-bottom-color: #334155;
}
[data-theme="dark"] .modal-content-scroll table {
    border-color: #334155;
    background: #1e293b;
}
[data-theme="dark"] .modal-content-scroll th {
    background-color: #0f172a;
    color: var(--primary);
    border-bottom-color: #334155;
}
[data-theme="dark"] .modal-content-scroll td {
    color: var(--text-main);
    border-bottom-color: #334155;
}
[data-theme="dark"] .modal-content-scroll tr:nth-child(even) {
    background-color: #253349;
}
[data-theme="dark"] .modal-content-scroll tr:hover td {
    background-color: #334155;
    color: #fff;
}
[data-theme="dark"] .modal-content-scroll blockquote {
    background-color: #1e293b;
    color: var(--text-main);
    border-left-color: var(--accent);
}
.modal-content-scroll h3::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 24px;
    background-color: var(--accent);
    border-radius: 4px;
}
.modal-content-scroll ul {
    margin: 1.5rem 0;
    padding-left: 0;
}
.modal-content-scroll ul li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}
.modal-content-scroll ul li::before {
    content: '•';
    position: absolute;
    left: 0.5rem;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2em;
    line-height: 1;
}
.modal-content-scroll ol {
    margin: 1.5rem 0;
    padding-left: 1.5rem;
    counter-reset: item;
}
.modal-content-scroll ol li {
    position: relative;
    padding-left: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}
.modal-content-scroll ol li::marker {
    color: var(--primary);
    font-weight: 700;
}
.modal-content-scroll hr {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, #cbd5e1, transparent);
    margin: 3rem 0;
}
.modal-content-scroll strong {
    color: var(--primary);
    font-weight: 700;
}
.modal-content-scroll em {
    color: var(--text-light);
}
.modal-content-scroll code {
    background-color: #f1f5f9;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
    color: #0f172a;
}
.calculator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}
[data-theme="dark"] .calculator-header {
    border-bottom-color: rgba(255, 255, 255, 0.05);
}
.header-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.header-title i {
    color: var(--accent);
    font-size: 2rem;
}
.header-title h3 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}
[data-theme="dark"] .header-title h3 {
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.mode-selector {
    background: rgba(0, 0, 0, 0.03);
    padding: 0.35rem;
    border-radius: 12px;
    display: flex;
    gap: 0.5rem;
}
[data-theme="dark"] .mode-selector {
    background: rgba(255, 255, 255, 0.05);
}
.mode-btn {
    padding: 0.6rem 1.25rem;
    border-radius: 10px;
    font-weight: 600;
    color: var(--text-light);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.mode-btn.active {
    background: var(--white);
    color: var(--accent);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
[data-theme="dark"] .mode-btn.active {
    background: var(--primary);
    color: white;
}
.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
    height: 100%;
}
.inputs-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.results-column {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 1rem;
    height: 100%;
}
@media (max-width: 900px) {
    .calc-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}
.input-group {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 20px;
    margin-bottom: 2rem;
}
[data-theme="dark"] .input-group {
    background: rgba(255, 255, 255, 0.02);
}
.input-group h4 {
    color: var(--primary);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}
[data-theme="dark"] .input-group h4 {
    color: var(--white);
}
.polarity-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.25rem;
}
@media (max-width: 600px) {
    .polarity-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
.polarity-row {
    background: var(--white);
    padding: 0.35rem;
    border-radius: 6px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}
[data-theme="dark"] .polarity-row {
    background: rgba(255, 255, 255, 0.05);
}
.polarity-row label {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-main);
}
.polarity-switch {
    display: flex;
    gap: 0.25rem;
}
.polarity-switch button {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 700;
    border: 1px solid transparent;
    transition: all 0.2s;
    display: grid;
    place-items: center;
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
}
.polarity-switch button:hover {
    background: rgba(0, 0, 0, 0.05);
}
.polarity-switch button.active[data-val="1"] {
    background: #22c55e;
    color: white;
}
.polarity-switch button.active[data-val="0"] {
    background: #64748b;
    color: white;
}
.polarity-switch button.active[data-val="-1"] {
    background: #ef4444;
    color: white;
}
.result-card {
    margin-bottom: 1rem;
}
.result-card {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    border-radius: 20px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 1rem;
}
[data-theme="dark"] .result-card {
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border-color: rgba(255, 255, 255, 0.05);
}
.result-main {
    margin-bottom: 1rem;
}
.angle-display {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
    color: var(--primary);
    line-height: 1;
}
[data-theme="dark"] .angle-display {
    color: white;
}
.quadrant-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    background: var(--text-light);
    color: white;
}
.interpretation-text {
    font-size: 0.95rem;
    color: var(--text-light);
}
.graphic-container {
    width: 180px;
    height: 180px;
    margin: 0 auto;
    position: relative;
    background: var(--bg-light);
    border-radius: 50%;
}
[data-theme="dark"] .graphic-container {
    background: rgba(255, 255, 255, 0.02);
}
.amp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.amp-field label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.85rem;
    font-weight: 600;
}
.amp-field input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    background: var(--white);
    color: var(--text-main);
    text-align: center;
}
[data-theme="dark"] .amp-field input {
    background: var(--primary-light);
    border-color: rgba(255, 255, 255, 0.1);
    color: white;
}
.hidden {
    display: none !important;
}
.disabled-section {
    opacity: 0.35;
    pointer-events: none;
    filter: grayscale(100%);
    transition: all 0.3s ease;
}
.amplitude-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    width: 100%;
}
.amplitude-buttons .a-btn {
    flex: 1;
    justify-content: center;
}
@media (max-width: 600px) {
    .amplitude-buttons {
        flex-direction: column;
    }
}
.calculator-page-container {
    padding-top: 100px;
    padding-bottom: 50px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background: var(--bg-light);
}
.modal-container.static-card {
    max-height: none;
    height: auto;
    position: relative;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease-out;
    margin: 0 auto;
}
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
[data-theme="dark"] .calculator-page-container {
    background: var(--bg-dark);
}
:root {
    --color-d1: #3b82f6;
    --color-d2: #22c55e;
    --color-d3: #14b8a6;
    --color-avr: #ef4444;
    --color-avl: #f97316;
    --color-avf: #a855f7;
}
.calculator-page-container {
    position: relative;
    background: #f8fafc;
    align-items: flex-start;
    padding-top: 90px;
    padding-bottom: 30px;
    overflow: hidden;
}
[data-theme="dark"] .calculator-page-container {
    background: #0f172a;
}
.calculator-page-container::before {
    width: 600px;
    height: 600px;
    background: rgba(59, 130, 246, 0.3);
    top: -100px;
    left: -200px;
    animation: drift 15s infinite alternate;
}
.calculator-page-container::after {
    width: 700px;
    height: 700px;
    background: rgba(239, 68, 68, 0.2);
    bottom: -200px;
    right: -200px;
    animation: drift 20s infinite alternate-reverse;
}
[data-theme="dark"] .calculator-page-container::before {
    background: rgba(59, 130, 246, 0.15);
}
[data-theme="dark"] .calculator-page-container::after {
    background: rgba(239, 68, 68, 0.1);
}
@keyframes drift {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}
.premium-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    width: 95%;
    max-width: 1100px;
    border-radius: 30px;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.15), inset 0 1px 1px rgba(255, 255, 255, 1);
    border: 1px solid rgba(255, 255, 255, 0.7);
    padding: 1.5rem 3rem;
    position: relative;
    z-index: 1;
}
[data-theme="dark"] .premium-card {
    background: rgba(15, 23, 42, 0.6);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.1);
}
.premium-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.premium-title h1 {
    font-size: 2rem;
    font-weight: 800;
    margin: 0;
    color: #ef4444;
}
.premium-title p {
    color: var(--text-light);
    font-size: 1rem;
    margin-top: 0.5rem;
}
.calculator-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.3fr;
    gap: 3rem;
    align-items: stretch;
}
.calculator-steps-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
@media (max-width: 900px) {
    .calculator-layout {
        grid-template-columns: 1fr;
    }
}
.step-section {
    position: relative;
}
.step-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}
.step-number {
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}
.step-info h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--primary);
}
.step-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-light);
}
.polarity-group-modern {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.25rem;
    background: rgba(0, 0, 0, 0.02);
    padding: 0.35rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.02);
}
[data-theme="dark"] .polarity-group-modern {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.2);
}
.polarity-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: opacity 0.3s ease, filter 0.3s ease;
}
.polarity-item.disabled-lead {
    opacity: 0.4;
    pointer-events: none;
    filter: grayscale(100%);
}
@keyframes pulseHighlight {
    0% { box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.4); border-color: rgba(14, 165, 233, 0.8); }
    70% { box-shadow: 0 0 0 6px rgba(14, 165, 233, 0); border-color: transparent; }
    100% { box-shadow: 0 0 0 0 rgba(14, 165, 233, 0); border-color: transparent; }
}
.pulse-highlight {
    animation: pulseHighlight 2s infinite !important;
    border: 2px solid var(--primary) !important;
    position: relative;
    z-index: 5;
}
.lead-title {
    font-weight: 800;
    font-size: 0.95rem;
    text-align: center;
    letter-spacing: 0.05em;
    margin-bottom: 0.1rem;
}
.polarity-buttons {
    display: flex;
    background: #f1f5f9;
    padding: 0.2rem;
    border-radius: 10px;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.05);
    gap: 0.2rem;
}
[data-theme="dark"] .polarity-buttons {
    background: #0f172a;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.5);
}
.p-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.25rem 0.4rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-size: 0.85rem;
    color: var(--text-light);
}
.p-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    color: var(--primary);
}
[data-theme="dark"] .p-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}
[data-lead="d1"] .p-btn.active {
    background: var(--color-d1);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 15px -3px rgba(59, 130, 246, 0.5);
}
[data-lead="d2"] .p-btn.active {
    background: var(--color-d2);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 15px -3px rgba(34, 197, 94, 0.5);
}
[data-lead="d3"] .p-btn.active {
    background: var(--color-d3);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 15px -3px rgba(20, 184, 166, 0.5);
}
[data-lead="avr"] .p-btn.active {
    background: var(--color-avr);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 15px -3px rgba(239, 68, 68, 0.5);
}
[data-lead="avl"] .p-btn.active {
    background: var(--color-avl);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 15px -3px rgba(249, 115, 22, 0.5);
}
[data-lead="avf"] .p-btn.active {
    background: var(--color-avf);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 15px -3px rgba(168, 85, 247, 0.5);
}
.premium-results {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 30px;
    height: 100%;
}
.premium-graphic-container {
    width: 380px;
    height: 380px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0.75rem auto 2rem auto;
}
.result-display {
    text-align: center;
    padding: 0.25rem 1.5rem;
    background: linear-gradient(135deg, var(--white) 0%, #f8fafc 100%);
    border-radius: 16px;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    width: 100%;
}
[data-theme="dark"] .result-display {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.8) 100%);
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
}
.big-angle {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1;
    margin: 0.25rem 0;
    display: block;
    letter-spacing: -1.5px;
}
.result-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: var(--bg-light);
    border-radius: 100px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: var(--text-light);
}
.clinical-note {
    margin-top: 0.25rem;
    font-size: 0.8rem;
    line-height: 1.3;
    color: var(--text-main);
}
.text-d1 {
    color: var(--color-d1);
}
.text-d2 {
    color: var(--color-d2);
}
.text-d3 {
    color: var(--color-d3);
}
.text-avr {
    color: var(--color-avr);
}
.text-avl {
    color: var(--color-avl);
}
.text-avf {
    color: var(--color-avf);
}
.case-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 2rem 2.5rem 1.5rem 2.5rem;
    margin-bottom: 0;
}
.case-content-scroll {
    overflow-y: auto;
    padding: 1.5rem 2.5rem 3rem 2.5rem;
    flex: 1;
}
[data-theme="dark"] .case-modal-header {
    border-bottom-color: rgba(255, 255, 255, 0.05);
}
.case-modal-title-bar h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}
[data-theme="dark"] .case-modal-title-bar h2 {
    color: #ffffff;
}
.case-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.8rem;
    background: var(--bg-light);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    margin-right: 0.5rem;
}
[data-theme="dark"] .case-badge {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}
.case-progress-bar {
    display: flex;
    gap: 0.4rem;
    margin-top: 0.5rem;
}
.case-progress-dot {
    height: 6px;
    flex: 1;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    transition: all 0.3s;
}
[data-theme="dark"] .case-progress-dot {
    background: rgba(255, 255, 255, 0.1);
}
.case-progress-dot.completed {
    background: var(--color-d2);
}
.case-progress-dot.active {
    background: var(--accent);
}
.case-intro {
    text-align: center;
    padding: 2rem;
}
[data-theme="dark"] .case-intro h3 {
    color: #ffffff;
}
.case-vignette {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-main);
    background: rgba(0, 0, 0, 0.02);
    padding: 2rem;
    border-radius: 16px;
    border-left: 4px solid var(--accent);
    text-align: left;
    margin-bottom: 2rem;
}
[data-theme="dark"] .case-vignette {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.02);
}
.case-history-box {
    font-size: 0.95rem;
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    margin-bottom: 2rem;
    color: var(--text-main);
    border: 1px solid rgba(0, 0, 0, 0.05);
}
[data-theme="dark"] .case-history-box {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}
.case-question-box {
    margin-bottom: 2rem;
}
.step-counter {
    font-size: 0.85rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 0.5rem;
}
.case-question {
    font-size: 1.4rem;
    color: var(--primary);
    font-weight: 700;
    line-height: 1.4;
}
[data-theme="dark"] .case-question {
    color: #ffffff;
}
.case-options-grid {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}
.btn-case-option {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
    text-align: left;
    padding: 1.25rem;
    background: var(--white);
    border: 2px solid rgba(0, 0, 0, 0.05);
    border-radius: 16px;
    font-size: 1.05rem;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-theme="dark"] .btn-case-option {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
    color: #ffffff;
}
.btn-case-option:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}
.opt-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--bg-light);
    color: var(--primary);
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.95rem;
    flex-shrink: 0;
}
[data-theme="dark"] .opt-letter {
    background: var(--primary);
    color: #0f172a;
}
.btn-case-option.correct {
    background: rgba(34, 197, 94, 0.1);
    border-color: #22c55e;
    color: #166534;
}
[data-theme="dark"] .btn-case-option.correct {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}
.btn-case-option.incorrect {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #991b1b;
}
[data-theme="dark"] .btn-case-option.incorrect {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}
.btn-case-option.fade-out {
    opacity: 0.5;
}
.case-feedback {
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    animation: fadeInUp 0.4s ease-out forwards;
}
.case-feedback.bg-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #166534;
}
[data-theme="dark"] .case-feedback.bg-success {
    color: #4ade80;
}
.case-feedback.bg-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #991b1b;
}
[data-theme="dark"] .case-feedback.bg-error {
    color: #ef4444;
}
.feedback-header {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.case-result-screen {
    padding: 3rem 1rem;
}
.case-result-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}
.case-result-icon.gold-star,
[data-theme="dark"] .case-result-icon.gold-star {
    color: #fbbf24 !important;
}
.case-score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: conic-gradient(var(--accent) 0%, var(--primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: white;
    font-size: 2rem;
    font-weight: 800;
    box-shadow: var(--shadow-lg);
}
.case-conclusion-box {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}
[data-theme="dark"] .case-conclusion-box {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
}
.case-conclusion-box h4 {
    color: var(--primary);
    margin-bottom: 1rem;
}
[data-theme="dark"] .case-conclusion-box h4 {
    color: #ffffff;
}
.mt-4 {
    margin-top: 1.5rem;
}
.mb-2 {
    margin-bottom: 0.5rem;
}
.mb-4 {
    margin-bottom: 1.5rem;
}
.text-center {
    text-align: center;
}
.text-right {
    text-align: right;
}
.text-left {
    text-align: left;
}
.sim-monitor-container {
    background: #0f172a;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    border: 2px solid #334155;
}
.sim-monitor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #334155;
}
.sim-brand {
    color: #4ade80;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 2px;
}
.sim-vitals {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    color: #22c55e;
}
.hr-label {
    font-size: 0.875rem;
    font-weight: 500;
}
.hr-value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    transition: opacity 0.1s ease;
}
.hr-unit {
    font-size: 0.875rem;
}
.sim-canvas-wrapper {
    width: 100%;
    position: relative;
    background: #0f172a;
    border-radius: 8px;
    overflow: hidden;
}
.sim-canvas-wrapper canvas {
    display: block;
    width: 100%;
    height: auto; 
}
.ecg-grid-bg {
    background-image:
        linear-gradient(rgba(34, 197, 94, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 197, 94, 0.2) 1px, transparent 1px),
        linear-gradient(rgba(34, 197, 94, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 197, 94, 0.08) 1px, transparent 1px);
    background-size: 25px 25px, 25px 25px, 5px 5px, 5px 5px;
    background-position: -1px -1px, -1px -1px, -1px -1px, -1px -1px;
}
@media (max-width: 500px) {
    .sim-canvas-wrapper {
        max-height: 200px;
        overflow: hidden;
    }
    .sim-canvas-wrapper canvas {
        max-height: 200px;
    }
    .ecg-grid-bg {
        background-size: 12.5px 12.5px, 12.5px 12.5px, 2.5px 2.5px, 2.5px 2.5px !important;
    }
}
.sim-controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}
.sim-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 12px;
    color: var(--text-color);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}
.sim-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}
.sim-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}
[data-theme="dark"] .sim-btn.active {
    background: var(--accent) !important;
    color: #ffffff !important;
    border-color: var(--accent) !important;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4) !important;
}
.rhythm-analysis-panel {
    margin-top: 1.75rem;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.07);
    background: #ffffff;
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.10), 0 2px 8px rgba(15, 23, 42, 0.06);
    opacity: 0;
    transform: translateY(14px);
    transition: none;
}
[data-theme="dark"] .rhythm-analysis-panel {
    background: #0f172a;
    border-color: rgba(148, 163, 184, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
}
.rap-animate-in {
    animation: rapSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes rapSlideIn {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}
.rhythm-analysis-panel::before {
    content: '';
    display: block;
    height: 4px;
    background: linear-gradient(90deg, #ef4444 0%, #f97316 100%);
    width: 100%;
}
.rap-header {
    padding: 1.1rem 1.4rem 1rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 1px solid rgba(15, 23, 42, 0.07);
}
[data-theme="dark"] .rap-header {
    background: linear-gradient(135deg, #0a0f1d 0%, #0f172a 100%);
    border-bottom-color: rgba(148, 163, 184, 0.08);
}
.rap-title-row {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}
.rap-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.35);
}
[data-theme="dark"] .rap-icon {
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.5);
}
.rap-name {
    font-size: 1rem;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 0.15rem;
    line-height: 1.3;
    font-family: var(--font-heading, 'Outfit', sans-serif);
}
[data-theme="dark"] .rap-name { color: #f1f5f9; }
.rap-subtitle {
    font-size: 0.75rem;
    color: #64748b;
    margin: 0;
    line-height: 1.4;
}
[data-theme="dark"] .rap-subtitle { color: #94a3b8; }
.rap-severity-badge {
    margin-left: auto;
    flex-shrink: 0;
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    border: 1.5px solid transparent;
}
.rap-badge-normal  { background: #dcfce7; color: #15803d; border-color: #86efac; }
.rap-badge-mild    { background: #ede9fe; color: #6d28d9; border-color: #c4b5fd; }
.rap-badge-warning { background: #fef9c3; color: #854d0e; border-color: #fde047; }
.rap-badge-urgent  { background: #ffedd5; color: #c2410c; border-color: #fdba74; }
.rap-badge-code    { background: #fee2e2; color: #b91c1c; border-color: #fca5a5; }
[data-theme="dark"] .rap-badge-normal  { background: rgba(34,197,94,0.15);  color: #4ade80; border-color: rgba(74,222,128,0.3); }
[data-theme="dark"] .rap-badge-mild    { background: rgba(139,92,246,0.15); color: #a78bfa; border-color: rgba(167,139,250,0.3); }
[data-theme="dark"] .rap-badge-warning { background: rgba(234,179,8,0.15);  color: #facc15; border-color: rgba(250,204,21,0.3); }
[data-theme="dark"] .rap-badge-urgent  { background: rgba(249,115,22,0.15); color: #fb923c; border-color: rgba(251,146,60,0.3); }
[data-theme="dark"] .rap-badge-code    { background: rgba(239,68,68,0.2);   color: #f87171; border-color: rgba(248,113,113,0.35); }
.rap-body {
    padding: 1.25rem 1.4rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}
.rap-clinical-box {
    grid-column: 1 / -1;
}
.rap-section-title {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #ef4444;
    margin: 0 0 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding-bottom: 0.5rem;
    border-bottom: 1.5px solid rgba(239, 68, 68, 0.15);
}
.rap-section-title i { font-size: 0.65rem; }
[data-theme="dark"] .rap-section-title {
    color: #f87171;
    border-bottom-color: rgba(248, 113, 113, 0.2);
}
.rap-findings-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(15, 23, 42, 0.07);
}
[data-theme="dark"] .rap-findings-list {
    border-color: rgba(148, 163, 184, 0.1);
}
.rap-finding-item {
    display: flex;
    align-items: stretch;
    font-size: 0.79rem;
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
    transition: background 0.15s;
}
.rap-finding-item:last-child { border-bottom: none; }
[data-theme="dark"] .rap-finding-item {
    border-bottom-color: rgba(148, 163, 184, 0.07);
}
.rap-finding-item::before {
    content: '';
    display: block;
    width: 4px;
    flex-shrink: 0;
    background: #e2e8f0;
}
[data-theme="dark"] .rap-finding-item::before { background: #334155; }
.rap-finding-ok::before    { background: #22c55e; }
.rap-finding-altered::before { background: #f59e0b; }
.rap-finding-critical::before { background: #ef4444; }
.rap-finding-label {
    color: #334155;
    font-weight: 600;
    flex-shrink: 0;
    width: 110px;
    min-width: 110px;
    padding: 0.5rem 0.6rem 0.5rem 0.75rem;
    background: #e2e8f0;
    border-right: 1px solid rgba(15, 23, 42, 0.1);
    display: flex;
    align-items: center;
    font-size: 0.75rem;
}
[data-theme="dark"] .rap-finding-label {
    color: #94a3b8;
    background: rgba(15, 23, 42, 0.7);
    border-right-color: rgba(148, 163, 184, 0.12);
}
.rap-finding-value {
    color: #1e293b;
    padding: 0.5rem 0.7rem;
    line-height: 1.4;
    flex: 1;
    display: flex;
    align-items: center;
    background: #f1f5f9;
    font-size: 0.79rem;
}
[data-theme="dark"] .rap-finding-value {
    color: #cbd5e1;
    background: #090d16;
}
.rap-finding-ok      { background: rgba(220, 252, 231, 0.7); }
.rap-finding-altered { background: rgba(254, 243, 199, 0.7); }
.rap-finding-critical { background: rgba(254, 226, 226, 0.7); }
[data-theme="dark"] .rap-finding-ok      { background: rgba(34,197,94,0.1); }
[data-theme="dark"] .rap-finding-altered { background: rgba(245,158,11,0.12); }
[data-theme="dark"] .rap-finding-critical { background: rgba(239,68,68,0.12); }
.rap-finding-ok .rap-finding-value      { color: #166534; }
.rap-finding-altered .rap-finding-value  { color: #92400e; font-weight: 500; }
.rap-finding-critical .rap-finding-value { color: #991b1b; font-weight: 600; }
[data-theme="dark"] .rap-finding-ok .rap-finding-value      { color: #86efac; }
[data-theme="dark"] .rap-finding-altered .rap-finding-value  { color: #fcd34d; }
[data-theme="dark"] .rap-finding-critical .rap-finding-value { color: #fca5a5; }
.rap-observe-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.rap-observe-item {
    font-size: 0.79rem;
    color: #334155;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    line-height: 1.5;
    padding: 0.45rem 0.65rem;
    border-radius: 8px;
    background: #f8fafc;
    border: 1px solid rgba(15, 23, 42, 0.06);
}
[data-theme="dark"] .rap-observe-item {
    color: #cbd5e1;
    background: #090d16;
    border-color: rgba(148, 163, 184, 0.08);
}
.rap-observe-item i {
    color: #ef4444;
    font-size: 0.5rem;
    margin-top: 0.42rem;
    flex-shrink: 0;
}
[data-theme="dark"] .rap-observe-item i { color: #f87171; }
.rap-clinical-box {
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(239,68,68,0.04) 0%, rgba(249,115,22,0.04) 100%);
    border: 1.5px solid rgba(239, 68, 68, 0.18);
    padding: 0.85rem 1rem;
}
[data-theme="dark"] .rap-clinical-box {
    background: linear-gradient(135deg, rgba(239,68,68,0.08) 0%, rgba(249,115,22,0.06) 100%);
    border-color: rgba(239, 68, 68, 0.25);
}
.rap-clinical-label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.67rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #ef4444;
    margin-bottom: 0.45rem;
}
[data-theme="dark"] .rap-clinical-label { color: #f87171; }
#rap-clinical {
    font-size: 0.79rem;
    color: #334155;
    line-height: 1.65;
    margin: 0;
}
[data-theme="dark"] #rap-clinical { color: #cbd5e1; }
@media (max-width: 600px) {
    .rap-body {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    .rap-finding-label { width: 90px; min-width: 90px; }
    .rap-header { padding: 0.9rem 1rem 0.85rem; }
}
@media (max-width: 430px) {
    .calculator-page-container {
        padding-top: 75px;
        padding-bottom: 30px;
        overflow-x: hidden;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .premium-card {
        padding: 0.85rem 0.7rem;
        border-radius: 16px;
        width: calc(100% - 1rem);
        max-width: 430px;
        box-sizing: border-box;
        margin: 0 auto;
    }
    .premium-graphic-container {
        width: min(175px, calc(100vw - 2.5rem));
        height: min(175px, calc(100vw - 2.5rem));
        margin: 0.4rem auto 0.8rem auto;
    }
    .polarity-group-modern {
        gap: 0.15rem;
        padding: 0.2rem;
        box-sizing: border-box;
        width: 100%;
    }
    .polarity-item {
        min-width: 0;
    }
    .p-btn {
        padding: 0.18rem 0.2rem;
        font-size: 0.72rem;
        min-width: 0;
    }
    .lead-title {
        font-size: 0.75rem;
    }
    .polarity-buttons {
        padding: 0.12rem;
        gap: 0.12rem;
    }
    .step-info h3 {
        font-size: 1rem;
    }
    .step-info p {
        font-size: 0.72rem;
    }
    .premium-title h1 {
        font-size: 1.25rem !important;
    }
    .premium-title p {
        font-size: 0.78rem !important;
    }
    .big-angle {
        font-size: 2rem;
    }
    .result-display {
        padding: 0.2rem 0.8rem;
        box-sizing: border-box;
        width: 100%;
    }
    .polarity-item[style*="grid-column"] .polarity-buttons {
        flex-wrap: wrap;
    }
    .a-btn {
        font-size: 0.78rem !important;
        padding: 0.18rem 0.25rem;
    }
    .sim-monitor-container {
        padding: 0.4rem;
        margin-bottom: 0.8rem;
        border-width: 1px;
        border-radius: 8px;
    }
    .sim-monitor-header {
        margin-bottom: 0.3rem;
        padding-bottom: 0.3rem;
    }
    .sim-brand {
        font-size: 0.75rem;
        letter-spacing: 1px;
    }
    .hr-value {
        font-size: 1.3rem;
    }
    .hr-label,
    .hr-unit {
        font-size: 0.6rem;
    }
    .sim-controls-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.3rem;
        margin-top: 0.3rem;
    }
    .sim-btn {
        padding: 0.4rem 0.3rem;
        font-size: 0.72rem;
        border-radius: 6px;
        line-height: 1.2;
    }
    .premium-header {
        margin-bottom: 0.6rem !important;
    }
}
@media (max-width: 768px) {
    .calculator-page-container {
        padding-top: 80px;
        padding-bottom: 40px;
        width: 100%;
        overflow-x: hidden;
    }
    .premium-graphic-container {
        width: min(340px, calc(100vw - 3rem));
        height: min(340px, calc(100vw - 3rem));
    }
    .premium-card {
        padding: 1.5rem 1.25rem;
        border-radius: 20px;
        width: 95%;
        margin: 0 auto;
        box-sizing: border-box;
    }
    .premium-header {
        margin-bottom: 2rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .premium-title h1 {
        font-size: 1.5rem;
    }
    .premium-title p {
        font-size: 0.85rem;
    }
    .sim-monitor-container {
        padding: 0.5rem;
        margin-bottom: 1rem;
        border-width: 1px;
    }
    .sim-monitor-header {
        margin-bottom: 0.4rem;
        padding-bottom: 0.4rem;
    }
    .sim-brand {
        font-size: 0.85rem;
        letter-spacing: 1px;
    }
    .hr-label {
        font-size: 0.65rem;
    }
    .hr-value {
        font-size: 1.5rem;
    }
    .hr-unit {
        font-size: 0.65rem;
    }
    .sim-controls-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.4rem;
        margin-top: 0.4rem;
    }
    .sim-btn {
        padding: 0.5rem 0.4rem;
        font-size: 0.78rem;
        border-radius: 8px;
        line-height: 1.2;
    }
    .steps-container {
        gap: 2rem;
    }
    .step-label {
        margin-bottom: 1rem;
    }
    .step-number {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }
    .step-info h3 {
        font-size: 1.1rem;
    }
    .navbar {
        padding: 0.5rem 1rem;
    }
    .nav-container .btn-nav-accent {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}
@media (max-width: 430px) {
    .premium-graphic-container {
        width: min(240px, calc(100vw - 2.5rem)) !important;
        height: min(240px, calc(100vw - 2.5rem)) !important;
        margin: -0.5rem auto 2rem auto !important;
    }
    .calculator-page-container {
        padding-top: 55px !important;
    }
    .nav-container .btn-nav-accent {
        font-size: 0 !important; 
        padding: 0.4rem !important;
        width: 32px;
        height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .nav-container .btn-nav-accent i {
        font-size: 1rem !important;
        margin-right: 0 !important;
    }
}
#content-modal .modal-container {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    border-radius: 0;
    margin: 0;
    animation: modalFullScreenSlide 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes modalFullScreenSlide {
    from {
        transform: translateY(100vh);
        opacity: 0.8;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.modal-topbar-tabs {
    display: flex;
    align-items: center;
    background: #f1f5f9;
    padding: 3px;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    margin: 0 1.5rem;
}
[data-theme="dark"] .modal-topbar-tabs {
    background: #0f172a;
    border-color: #1e293b;
}
.modal-tab-btn {
    background: transparent;
    border: none;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #64748b;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-theme="dark"] .modal-tab-btn {
    color: #94a3b8;
}
.modal-tab-btn:hover {
    color: var(--primary);
    background: rgba(0, 0, 0, 0.03);
}
[data-theme="dark"] .modal-tab-btn:hover {
    color: #f1f5f9;
    background: rgba(255, 255, 255, 0.03);
}
.modal-tab-btn.active {
    background: var(--accent);
    color: white !important;
    box-shadow: 0 4px 10px rgba(225, 29, 72, 0.35);
}
@media (max-width: 600px) {
    .modal-topbar {
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
    }
    .modal-topbar-tabs {
        order: 3;
        width: 100%;
        margin: 0.25rem 0;
        justify-content: center;
    }
    .modal-tab-btn {
        flex: 1;
        justify-content: center;
        padding: 0.35rem 0.5rem;
        font-size: 0.8rem;
    }
}
.gallery-item {
    position: relative;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.05));
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease;
}
.gallery-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    border-color: #cbd5e1;
}
[data-theme="dark"] .gallery-item {
    background: #1e293b;
    border-color: #334155;
}
[data-theme="dark"] .gallery-item:hover {
    border-color: #475569;
}
.gallery-item-preview {
    height: 110px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0.5rem;
    border-bottom: 1px solid #f1f5f9;
}
[data-theme="dark"] .gallery-item-preview {
    background: #0f172a;
    border-bottom-color: #334155;
}
.gallery-item-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 4px;
}
.gallery-item-info {
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.gallery-item-name {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-dark, #334155);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}
[data-theme="dark"] .gallery-item-name {
    color: #f1f5f9;
}
.gallery-item-badge {
    align-self: flex-start;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.gallery-item-badge.not-used {
    background: #e2e8f0;
    color: #64748b;
}
[data-theme="dark"] .gallery-item-badge.not-used {
    background: #334155;
    color: #94a3b8;
}
.gallery-item-badge.used {
    background: #dcfce7;
    color: #15803d;
}
[data-theme="dark"] .gallery-item-badge.used {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
}
.gallery-item-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
    padding: 0 0.75rem 0.75rem 0.75rem;
    margin-top: auto;
}
.gallery-item-delete-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(239, 68, 68, 0.85);
    color: white;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}
.gallery-item-delete-btn:hover {
    background: #ef4444;
    transform: scale(1.1);
}
[data-theme="dark"] .gallery-item-delete-btn {
    background: rgba(239, 68, 68, 0.75);
}
[data-theme="dark"] .gallery-item-delete-btn:hover {
    background: #ef4444;
}
.gallery-item-btn {
    border: none;
    border-radius: 6px;
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    transition: all 0.2s;
    flex: 1;
}
.gallery-item-btn.btn-copy {
    background: #f1f5f9;
    color: #475569;
}
.gallery-item-btn.btn-copy:hover {
    background: #e2e8f0;
    color: #1e293b;
}
[data-theme="dark"] .gallery-item-btn.btn-copy {
    background: #334155;
    color: #cbd5e1;
}
[data-theme="dark"] .gallery-item-btn.btn-copy:hover {
    background: #475569;
    color: #f1f5f9;
}
.gallery-item-btn.btn-insert {
    background: #fff1f2;
    color: var(--accent);
}
.gallery-item-btn.btn-insert:hover {
    background: var(--accent);
    color: white;
}
[data-theme="dark"] .gallery-item-btn.btn-insert {
    background: rgba(225, 29, 72, 0.15);
    color: #ef4444;
}
[data-theme="dark"] .gallery-item-btn.btn-insert:hover {
    background: var(--accent);
    color: white;
}
.gallery-item-btn.btn-delete {
    background: #fee2e2;
    color: #ef4444;
    flex: 0 0 28px;
    width: 28px;
    height: 28px;
    padding: 0;
}
.gallery-item-btn.btn-delete:hover {
    background: #ef4444;
    color: white;
}
[data-theme="dark"] .gallery-item-btn.btn-delete {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}
[data-theme="dark"] .gallery-item-btn.btn-delete:hover {
    background: #ef4444;
    color: white;
}
.gallery-item-name-input {
    width: 100%;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-dark, #334155);
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 4px 8px;
    outline: none;
    transition: all 0.2s ease;
    box-sizing: border-box;
}
.gallery-item-name-input:focus {
    background: #ffffff;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(225, 29, 72, 0.2);
}
[data-theme="dark"] .gallery-item-name-input {
    color: #f1f5f9;
    background: #0f172a;
    border-color: #475569;
}
[data-theme="dark"] .gallery-item-name-input:focus {
    background: #1e293b;
    border-color: #ef4444;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
}
.gallery-item.highlighted-gallery-item {
    border-color: #fbbf24 !important;
    box-shadow: 0 0 12px rgba(251, 191, 36, 0.4) !important;
    transform: scale(1.02) translateY(-2px);
    animation: pulseHighlight 1.5s infinite alternate;
}
[data-theme="dark"] .gallery-item.highlighted-gallery-item {
    border-color: #fbbf24 !important;
    box-shadow: 0 0 16px rgba(251, 191, 36, 0.5) !important;
}
@keyframes pulseHighlight {
    0% {
        box-shadow: 0 0 6px rgba(251, 191, 36, 0.3);
    }
    100% {
        box-shadow: 0 0 14px rgba(251, 191, 36, 0.6);
    }
}
.gallery-item-btn.btn-locate {
    background: #fef3c7;
    color: #b45309;
}
.gallery-item-btn.btn-locate:hover {
    background: #fbbf24;
    color: #78350f;
}
[data-theme="dark"] .gallery-item-btn.btn-locate {
    background: rgba(251, 191, 36, 0.15);
    color: #fcd34d;
}
[data-theme="dark"] .gallery-item-btn.btn-locate:hover {
    background: #fbbf24;
    color: #1e293b;
}
@keyframes borderFlash {
    0% {
        border-color: #fbbf24 !important;
        box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.6) !important;
    }
    100% {
        border-color: var(--border-color);
        box-shadow: none;
    }
}
.textarea-flash-highlight {
    animation: borderFlash 1.5s ease-out;
}
@media (min-device-width: 768px) and (max-device-width: 1024px) {
    :fullscreen .navbar {
        padding-top: calc(2.2rem + env(safe-area-inset-top)) !important;
        padding-bottom: 1.2rem !important;
    }
    :fullscreen .navbar .logo {
        margin-left: 90px !important; 
    }
    :fullscreen .calculator-page-container {
        padding-top: calc(150px + env(safe-area-inset-top)) !important;
    }
}
@media (min-device-width: 768px) and (max-device-width: 1024px) {
    :-webkit-full-screen .navbar {
        padding-top: calc(2.2rem + env(safe-area-inset-top)) !important;
        padding-bottom: 1.2rem !important;
    }
    :-webkit-full-screen .navbar .logo {
        margin-left: 90px !important; 
    }
    :-webkit-full-screen .calculator-page-container {
        padding-top: calc(150px + env(safe-area-inset-top)) !important;
    }
}
.sketchfab-viewer-wrapper {
    margin-top: 3.5rem;
    margin-bottom: 2rem;
}
.sketchfab-viewer-card {
    background: var(--white, #ffffff);
    border-radius: 24px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05), 0 5px 15px rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.05);
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}
[data-theme="dark"] .sketchfab-viewer-card {
    background: #1e293b;
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}
.sketchfab-viewer-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08), 0 8px 20px rgba(0, 0, 0, 0.04);
}
[data-theme="dark"] .sketchfab-viewer-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}
.sketchfab-viewer-frame {
    position: relative;
    width: 100%;
    height: 500px;
    background: #000000;
}
.sketchfab-viewer-frame iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}
.sketchfab-viewer-info {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 1px solid rgba(0, 0, 0, 0.05);
}
[data-theme="dark"] .sketchfab-viewer-info {
    border-left-color: rgba(255, 255, 255, 0.05);
}
.viewer-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent, #e11d48);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 50px;
    align-self: flex-start;
    margin-bottom: 1.2rem;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 5px rgba(239, 68, 68, 0.05);
}
[data-theme="dark"] .viewer-tag {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}
.sketchfab-viewer-info h3 {
    font-size: 1.8rem;
    color: var(--primary, #0f172a);
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}
[data-theme="dark"] .sketchfab-viewer-info h3 {
    color: #ffffff;
}
.sketchfab-viewer-info p {
    color: var(--text-light, #64748b);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
[data-theme="dark"] .sketchfab-viewer-info p {
    color: #cbd5e1;
}
.model-selector-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.model-selector-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark, #334155);
}
[data-theme="dark"] .model-selector-group label {
    color: #cbd5e1;
}
.form-control-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background-color: var(--white, #ffffff);
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2em;
    color: var(--text-dark, #334155);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
    appearance: none;
    padding-right: 2.5rem;
}
[data-theme="dark"] .form-control-select {
    background-color: #0f172a;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23cbd5e1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    border-color: #334155;
    color: #f8fafc;
}
.form-control-select:focus {
    border-color: var(--accent, #e11d48);
    box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.15);
}
@media (max-width: 992px) {
    .sketchfab-viewer-card {
        grid-template-columns: 1fr;
    }
    .sketchfab-viewer-frame {
        height: 400px;
    }
    .sketchfab-viewer-info {
        border-left: none;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
        padding: 2rem;
    }
    [data-theme="dark"] .sketchfab-viewer-info {
        border-top-color: rgba(255, 255, 255, 0.05);
    }
}
@media (max-width: 600px) {
    .sketchfab-viewer-frame {
        height: 320px;
    }
    .sketchfab-viewer-info {
        padding: 1.5rem;
    }
}
.nav-dropdown {
    position: relative;
    list-style: none;
}
.dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
    text-decoration: none;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--white, #ffffff);
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0.5rem 0;
    min-width: 210px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
    margin: 0;
}
[data-theme="dark"] .dropdown-menu {
    background: #1e293b;
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
}
@media (min-width: 1201px) {
    .nav-dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }
}
.dropdown-menu li {
    list-style: none;
    width: 100%;
}
.dropdown-menu a {
    display: block !important;
    padding: 0.6rem 1.2rem !important;
    color: var(--text-main, #334155) !important;
    font-size: 0.85rem !important;
    font-weight: 500 !important;
    text-align: left !important;
    transition: background 0.2s, color 0.2s;
    border-radius: 0;
}
.dropdown-menu a:hover {
    background: rgba(225, 29, 72, 0.05) !important;
    color: var(--accent, #e11d48) !important;
}
[data-theme="dark"] .dropdown-menu a:hover {
    background: rgba(239, 68, 68, 0.08) !important;
    color: #ef4444 !important;
}
@media (max-width: 1200px) {
    .dropdown-menu {
        position: static;
        transform: none !important;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        background: transparent !important;
        padding: 0;
        min-width: 0;
        display: none; 
        margin-top: 0.5rem;
    }
    .nav-dropdown.open .dropdown-menu {
        display: block;
    }
    .dropdown-menu a {
        text-align: center !important;
        padding: 0.5rem 0 !important;
        font-size: 0.9rem !important;
    }
}
.level-switcher-container {
    display: flex;
    justify-content: center;
    margin: 3.5rem auto 1.5rem;
    padding: 0 1rem;
    max-width: 550px;
}
.level-switcher {
    display: flex;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    padding: 6px;
    border-radius: 50px;
    width: 100%;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}
[data-theme="dark"] .level-switcher {
    background: #0f172a;
    border-color: #1e293b;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}
.level-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.75rem 1.25rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #64748b;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Outfit', sans-serif;
    outline: none;
}
[data-theme="dark"] .level-btn {
    color: #94a3b8;
}
.level-btn:hover {
    color: var(--accent, #e11d48);
}
[data-theme="dark"] .level-btn:hover {
    color: #ef4444;
}
.level-btn.active {
    background: var(--accent, #e11d48);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(225, 29, 72, 0.35);
}
.content-section {
    opacity: 1;
    transition: opacity 0.4s ease, transform 0.4s ease;
}
#urgencias .card {
    background: #1e293b !important;
    border: 1px solid rgba(255, 255, 255, 0.05) !important;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2) !important;
}
#urgencias .card-top-bar {
    background: linear-gradient(90deg, #ef4444, #ff8a65) !important;
}
#urgencias .card .card-icon {
    background: var(--accent, #E53935) !important;
    color: #ffffff !important;
}
#urgencias .card .badge-filled {
    background: rgba(239, 68, 68, 0.15) !important;
    color: #ef4444 !important;
    border: none !important;
}
#urgencias .card .badge-outline {
    color: #ef4444 !important;
}
#urgencias .card .card-content h2 {
    color: #ffffff !important;
}
#urgencias .card .card-content p {
    color: #cbd5e1 !important;
}
#urgencias .card .divider {
    border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
}
#urgencias .card .btn-primary {
    background: var(--accent, #E53935) !important;
    color: #ffffff !important;
}
[data-theme="dark"] footer,
[data-theme="dark"] .footer-legal,
[data-theme="dark"] .quiz-footer {
    border-top-color: #334155 !important;
}