/* Reset y configuración base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores principales */
    --primary-blue: #2C72B7;
    --dark-blue: #0F2D3F;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --gray: #6c757d;
    --dark-gray: #343a40;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    
    /* Tipografía */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Bordes */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header y Navegación */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 45, 63, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px; /* Ya estaba reducido pero confirmamos */
}

.logo {
    height: 38px; /* Reducido de 40px */
    width: auto;
    border-radius: var(--border-radius);
}

.brand-text h1 {
    color: var(--primary-blue);
    font-size: 1.2rem; /* Reducido de 1.5rem */
    font-weight: bold;
    margin-bottom: -5px;
}

.brand-text p {
    color: var(--white);
    font-size: 0.75rem; /* Reducido de 0.85rem */
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.2rem; /* Reducido de var(--spacing-md) que es 2rem */
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) 0.6rem; /* Reducido de var(--spacing-sm) */
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-blue);
    background: rgba(44, 114, 183, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition-fast);
}

.nav-link:hover::after {
    width: 80%;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--white);
    transition: var(--transition-fast);
}

/* Hero Section con Carrusel */
.hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Carrusel de imágenes */
.hero-carousel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
}

/* Overlay azul oscuro con sombra */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(13, 71, 161, 0.85) 0%,
        rgba(25, 118, 210, 0.75) 100%
    );
    box-shadow: inset 0 0 100px rgba(13, 71, 161, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    text-align: center;
    color: var(--white);
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(4rem, 12vw, 8rem);
    color: var(--white);
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
    text-shadow: 3px 3px 10px rgba(0, 0, 0, 0.5);
    font-weight: bold;
    letter-spacing: 0.1em;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    animation: fadeInUp 1s ease 0.9s forwards;
    line-height: 1.6;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 1s ease 1.2s forwards;
}

/* Indicadores del carrusel */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.indicator.active {
    background: var(--white);
    border-color: var(--primary-blue);
    transform: scale(1.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 2.5rem;
    }
    
    .carousel-indicators {
        bottom: 20px;
    }
    
    .indicator {
        width: 10px;
        height: 10px;
    }
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-normal);
    text-align: center;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: #1e5a94;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.btn-cta {
    background: linear-gradient(135deg, var(--primary-blue), #1e5a94);
    color: var(--white);
    font-size: 1.1rem;
    padding: var(--spacing-sm) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.btn-cta:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 24px rgba(44, 114, 183, 0.4);
}

/* Secciones */
.section {
    padding: var(--spacing-xl) 0;
}

.section-alt {
    background: var(--light-gray);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--dark-blue);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--dark-blue));
    border-radius: 2px;
}

/* Cards */
.card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    text-align: center;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
    color: var(--white);
    font-size: 2rem;
}

.card h3 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.card p {
    color: var(--gray);
    line-height: 1.7;
}

/* Misión y Visión */
.mission-vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* Objetivos */
.objectives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.objective-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border-left: 4px solid var(--primary-blue);
}

.objective-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--dark-blue);
}

.objective-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
    font-size: 1.5rem;
}

.objective-card h4 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.objective-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Consejo de Directores */
.council-photo {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.council-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.council-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.council-member {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    text-align: center;
    border-top: 4px solid var(--primary-blue);
}

.council-member:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.member-info h4 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.position {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Cuentas Bancarias */
.bank-accounts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.6;
}

.bank-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 2px solid var(--primary-blue);
    transition: var(--transition-normal);
}

.bank-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.bank-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
    font-size: 1.8rem;
}

.bank-card h4 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.account-info p {
    margin-bottom: var(--spacing-xs);
    color: var(--gray);
}

.account-info strong {
    color: var(--dark-blue);
}

.donation-note {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    text-align: center;
    margin-top: var(--spacing-lg);
}

.donation-note i {
    color: #ff6b6b;
    margin-right: var(--spacing-xs);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo {
    height: 60px;
    width: auto;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius);
}

.footer-brand h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    opacity: 0.9;
    font-size: 0.9rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    opacity: 0.9;
}

.contact-info i {
    color: var(--primary-blue);
    width: 16px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-link.facebook { background: #1877f2; }
.social-link.instagram { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }
.social-link.twitter { background: #1da1f2; }
.social-link.youtube { background: #ff0000; }
.social-link.whatsapp { background: #25d366; }

.social-link:hover {
    transform: translateY(-3px) scale(1.1);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-blue);
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--dark-blue);
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        padding: var(--spacing-lg) 0;
        gap: var(--spacing-sm);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .mission-vision-grid {
        grid-template-columns: 1fr;
    }

    .objectives-grid {
        grid-template-columns: 1fr;
    }

    .council-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .bank-accounts {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }

    .contact-info p {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-sm: 0.75rem;
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 2.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        height: 100vh;
        padding: var(--spacing-lg) 0;
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

    .card, .objective-card, .council-member, .bank-card {
        padding: var(--spacing-sm);
    }

    .mission-vision-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .objectives-grid {
        gap: var(--spacing-sm);
    }

    .council-grid {
        grid-template-columns: 1fr;
    }
}

/* Animaciones de entrada */
@keyframes slideInFromLeft {
    0% {
        transform: translateX(-100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInFromRight {
    0% {
        transform: translateX(100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeInScale {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Clases de utilidad para animaciones */
.animate-fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-slide-left {
    animation: slideInFromLeft 0.8s ease forwards;
}

.animate-slide-right {
    animation: slideInFromRight 0.8s ease forwards;
}

.animate-scale {
    animation: fadeInScale 0.8s ease forwards;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Estilos para elementos en focus */
*:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Transiciones suaves para todos los elementos interactivos */
a, button, input, textarea, select {
    transition: var(--transition-fast);
}

/* Estilos para elementos deshabilitados */
.disabled, [disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Efectos de hover mejorados */
.card, .objective-card, .council-member, .bank-card {
    cursor: pointer;
}

/* Mejoras de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .header, .footer, .btn, .social-links {
        display: none;
    }
    
    body {
        color: black;
        background: white;
    }
    
    .section {
        page-break-inside: avoid;
    }
}

/* ===== CARRUSEL 3D FINAL - COMPACTO, 5 VISIBLES, SIN FLECHAS ===== */

.universities-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

/* Container principal con overflow controlado */
.universities-carousel-clean {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding: 3rem 0; /* Reducido de 5rem a 3rem */
    overflow: hidden;
    background: linear-gradient(135deg, rgba(44, 114, 183, 0.03), rgba(15, 45, 63, 0.03));
    border-radius: var(--border-radius-lg);
    perspective: 1200px;
}

/* Track del carrusel */
.carousel-track-clean {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 320px; /* Reducido de 480px a 320px */
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tarjeta individual - TAMAÑO MEDIO */
.university-card {
    position: absolute;
    width: 280px; /* Reducido de 380px a 280px */
    min-height: 300px; /* Reducido de 420px a 300px */
    background: var(--white);
    border-radius: 20px;
    padding: 2rem 1.5rem; /* Reducido padding */
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    backface-visibility: hidden;
    border: 2px solid rgba(44, 114, 183, 0.1);
}

/* Card ACTIVA (central) - DESTACADA */
.university-card.active {
    transform: translateZ(100px) scale(1.15);
    box-shadow: 0 25px 60px rgba(44, 114, 183, 0.35);
    border-color: var(--primary-blue);
    z-index: 10;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.98), 
        rgba(255, 255, 255, 1)
    );
}

/* Cards LATERALES CERCANAS (left-1 y right-1) */
.university-card.left-1 {
    transform: translateX(-320px) translateZ(-50px) rotateY(18deg) scale(0.9);
    opacity: 0.7;
    z-index: 5;
}

.university-card.right-1 {
    transform: translateX(320px) translateZ(-50px) rotateY(-18deg) scale(0.9);
    opacity: 0.7;
    z-index: 5;
}

/* Cards LATERALES LEJANAS (left-2 y right-2) */
.university-card.left-2 {
    transform: translateX(-620px) translateZ(-100px) rotateY(28deg) scale(0.75);
    opacity: 0.4;
    z-index: 3;
}

.university-card.right-2 {
    transform: translateX(620px) translateZ(-100px) rotateY(-28deg) scale(0.75);
    opacity: 0.4;
    z-index: 3;
}

/* Cards OCULTAS */
.university-card.hidden {
    transform: translateZ(-250px) scale(0.3);
    opacity: 0;
    pointer-events: none;
}

/* Efecto de brillo animado diagonal */
.university-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 40%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 60%
    );
    transform: translateX(-100%);
    transition: transform 0.6s;
    pointer-events: none;
}

.university-card.active::before {
    transform: translateX(100%);
}

/* Container del logo - TAMAÑO MEDIO */
.university-logo-container {
    width: 120px; /* Reducido de 180px a 120px */
    height: 120px;
    margin: 0 auto 1.25rem; /* Reducido margin */
    background: linear-gradient(135deg, 
        rgba(44, 114, 183, 0.08), 
        rgba(15, 45, 63, 0.03)
    );
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem;
    position: relative;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.5s ease;
}

.university-card.active .university-logo-container {
    transform: translateY(-8px) scale(1.08);
    box-shadow: 0 15px 40px rgba(44, 114, 183, 0.25);
    background: linear-gradient(135deg, 
        rgba(44, 114, 183, 0.12), 
        rgba(15, 45, 63, 0.05)
    );
}

/* Anillo decorativo para la card activa */
.university-logo-container::before {
    content: '';
    position: absolute;
    inset: -12px;
    border-radius: 50%;
    border: 3px solid rgba(44, 114, 183, 0);
    transition: all 0.5s ease;
}

.university-card.active .university-logo-container::before {
    border-color: rgba(44, 114, 183, 0.3);
    animation: pulse-ring 2.5s ease-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.95);
        opacity: 1;
    }
    100% {
        transform: scale(1.15);
        opacity: 0;
    }
}

/* Imagen del logo */
.university-logo-img {
    max-width: 88%;
    max-height: 88%;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(0.3) brightness(1.05);
    transition: all 0.5s ease;
}

.university-card.active .university-logo-img {
    filter: grayscale(0) brightness(1);
    transform: scale(1.12);
}

/* Información de la universidad - TAMAÑO MEDIO */
.university-info h4 {
    color: var(--primary-blue);
    font-size: 1.35rem; /* Reducido de 1.8rem */
    font-weight: 800;
    margin-bottom: 0.5rem;
    transition: all 0.4s ease;
    letter-spacing: -0.5px;
}

.university-card.active .university-info h4 {
    color: var(--dark-blue);
    font-size: 1.5rem; /* Reducido de 2rem */
    transform: translateY(-2px);
}

.university-info p {
    color: var(--gray);
    font-size: 0.9rem; /* Reducido de 1.05rem */
    line-height: 1.5;
    min-height: 45px; /* Reducido de 60px */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    font-weight: 500;
    padding: 0 0.5rem;
    text-align: center;
    overflow: hidden;
}

.university-card.active .university-info p {
    color: var(--dark-gray);
    font-size: 1rem; /* Reducido de 1.15rem */
}

/* Indicadores */
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2rem; /* Reducido de 3rem */
    padding: 1rem 0;
}

.dot {
    width: 12px; /* Reducido de 16px */
    height: 12px;
    border-radius: 50%;
    background: rgba(44, 114, 183, 0.2);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px solid transparent;
}

.dot:hover {
    background: rgba(44, 114, 183, 0.5);
    transform: scale(1.3);
}

.dot.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    transform: scale(1.4);
    border-color: rgba(44, 114, 183, 0.3);
    box-shadow: 0 4px 15px rgba(44, 114, 183, 0.5);
}

/* Animación de pulso para dot activo */
.dot.active::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px solid var(--primary-blue);
    animation: pulse-dot 2.5s ease-out infinite;
}

@keyframes pulse-dot {
    0% {
        transform: scale(0.7);
        opacity: 1;
    }
    100% {
        transform: scale(1.8);
        opacity: 0;
    }
}

/* Estadísticas */
.universities-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    padding: 2.5rem 2rem;
    border-radius: 20px;
    margin-top: 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(44, 114, 183, 0.35);
}

.universities-stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 50%
    );
    pointer-events: none;
}

.stat-item {
    text-align: center;
    color: var(--white);
    position: relative;
    z-index: 1;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-6px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.3);
    display: block;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 600;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablets grandes */
@media (max-width: 1200px) {
    .carousel-track-clean {
        height: 300px;
    }
    
    .university-card {
        width: 260px;
        min-height: 280px;
    }
    
    .university-logo-container {
        width: 110px;
        height: 110px;
    }
    
    .university-card.left-1,
    .university-card.right-1 {
        transform: translateX(-300px) translateZ(-45px) rotateY(18deg) scale(0.88);
    }
    
    .university-card.left-2,
    .university-card.right-2 {
        transform: translateX(-580px) translateZ(-90px) rotateY(26deg) scale(0.72);
    }
}

/* Tablets */
@media (max-width: 1024px) {
    .universities-carousel-clean {
        padding: 2.5rem 0;
        perspective: 1000px;
    }
    
    .carousel-track-clean {
        height: 280px;
    }
    
    .university-card {
        width: 240px;
        min-height: 260px;
        padding: 1.75rem 1.25rem;
    }
    
    .university-card.active {
        transform: translateZ(80px) scale(1.12);
    }
    
    .university-card.left-1,
    .university-card.right-1 {
        transform: translateX(-280px) translateZ(-40px) rotateY(16deg) scale(0.85);
    }
    
    .university-card.left-2,
    .university-card.right-2 {
        transform: translateX(-540px) translateZ(-80px) rotateY(24deg) scale(0.7);
    }
    
    .university-logo-container {
        width: 100px;
        height: 100px;
    }
    
    .university-info h4 {
        font-size: 1.25rem;
    }
    
    .university-card.active .university-info h4 {
        font-size: 1.4rem;
    }
}

/* Tablets y pantallas medianas */
@media (max-width: 1024px) and (min-width: 769px) {
    .universities-carousel-clean {
        perspective: 1000px;
    }

    .carousel-track-clean {
        height: 300px;
    }

    .university-card {
        width: 240px;
        min-height: 280px;
        padding: 1.75rem 1.25rem;
    }

    .university-card.active {
        transform: translateZ(80px) scale(1.12);
    }

    .university-card.left-1 {
        transform: translateX(-260px) translateZ(-40px) rotateY(16deg) scale(0.88);
        opacity: 0.65;
    }

    .university-card.right-1 {
        transform: translateX(260px) translateZ(-40px) rotateY(-16deg) scale(0.88);
        opacity: 0.65;
    }

    .university-card.left-2 {
        transform: translateX(-520px) translateZ(-80px) rotateY(25deg) scale(0.72);
        opacity: 0.35;
    }

    .university-card.right-2 {
        transform: translateX(520px) translateZ(-80px) rotateY(-25deg) scale(0.72);
        opacity: 0.35;
    }

    .university-logo-container {
        width: 95px;
        height: 95px;
    }

    .university-info h4 {
        font-size: 1.2rem;
    }

    .university-card.active .university-info h4 {
        font-size: 1.4rem;
    }

    .university-info p {
        font-size: 0.88rem;
        min-height: 42px;
    }
}

/* Móviles - SOLO 3 VISIBLES */
@media (max-width: 768px) {
    .universities-carousel-clean {
        padding: 2rem 0;
        perspective: 800px;
    }
    
    .carousel-track-clean {
        height: 260px;
    }
    
    .university-card {
        width: 220px;
        min-height: 240px;
        padding: 1.5rem 1rem;
    }
    
    .university-card.active {
        transform: translateZ(70px) scale(1.1);
    }
    
    /* En móvil solo mostramos 3 cards: central + 2 laterales */
    .university-card.left-1 {
        transform: translateX(-180px) translateZ(-35px) rotateY(15deg) scale(0.8);
        opacity: 0.6;
    }

    .university-card.right-1 {
        transform: translateX(180px) translateZ(-35px) rotateY(-15deg) scale(0.8);
        opacity: 0.6;
    }
    
    /* Ocultar las cards más lejanas en móvil */
    .university-card.left-2,
    .university-card.right-2 {
        display: none;
        opacity: 0;
    }
    
    .university-logo-container {
        width: 90px;
        height: 90px;
        margin-bottom: 1rem;
    }
    
    .university-info h4 {
        font-size: 1.3rem;
    }

    .university-card.active .university-info h4 {
        font-size: 1.5rem;
    }

    /* Ocultar nombres completos en móviles, solo mostrar siglas */
    .university-info p {
        display: none;
    }

    /* Ajustar espaciado sin el nombre completo */
    .university-info {
        min-height: auto;
    }
    
    .dot {
        width: 10px;
        height: 10px;
    }
    
    .carousel-dots {
        gap: 0.6rem;
        margin-top: 1.5rem;
    }
    
    .universities-stats {
        grid-template-columns: 1fr;
        padding: 2rem 1.5rem;
        gap: 1.25rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

/* Móviles pequeños */
@media (max-width: 480px) {
    .universities-carousel-clean {
        padding: 1.75rem 0;
    }
    
    .carousel-track-clean {
        height: 240px;
    }
    
    .university-card {
        width: 200px;
        min-height: 220px;
        padding: 1.25rem 0.85rem;
    }
    
    .university-card.active {
        transform: translateZ(60px) scale(1.08);
    }
    
    .university-card.left-1 {
        transform: translateX(-160px) translateZ(-30px) rotateY(12deg) scale(0.75);
        opacity: 0.5;
    }

    .university-card.right-1 {
        transform: translateX(160px) translateZ(-30px) rotateY(-12deg) scale(0.75);
        opacity: 0.5;
    }

    .university-logo-container {
        width: 80px;
        height: 80px;
        margin-bottom: 0.85rem;
    }

    .university-info h4 {
        font-size: 1.15rem;
    }

    .university-card.active .university-info h4 {
        font-size: 1.35rem;
    }

    /* Ocultar nombres completos también en móviles pequeños */
    .university-info p {
        display: none;
    }

    .university-info {
        min-height: auto;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
}

/* ===== ACCESIBILIDAD ===== */

@media (prefers-reduced-motion: reduce) {
    .university-card,
    .carousel-track-clean,
    .dot.active::before,
    .university-logo-container::before {
        animation: none !important;
        transition-duration: 0.01ms !important;
    }
    
    .university-card:hover,
    .stat-item:hover {
        transform: none !important;
    }
}

/* Estados de focus */
.dot:focus {
    outline: 3px solid var(--primary-blue);
    outline-offset: 4px;
}

.university-card:focus {
    outline: 3px solid var(--primary-blue);
    outline-offset: 3px;
}

/* Alto contraste */
@media (prefers-contrast: high) {
    .university-card {
        border: 3px solid var(--dark-blue);
    }
    
    .university-card.active {
        border-width: 4px;
    }
    
    .university-logo-container {
        border: 2px solid var(--primary-blue);
    }
    
    .dot {
        border: 2px solid var(--dark-blue);
    }
}

/* Print styles */
@media print {
    .universities-carousel-clean {
        overflow: visible !important;
        perspective: none !important;
    }
    
    .carousel-track-clean {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 1rem !important;
        height: auto !important;
        transform: none !important;
    }
    
    .university-card {
        position: relative !important;
        transform: none !important;
        opacity: 1 !important;
        width: 100% !important;
        page-break-inside: avoid;
    }
    
    .carousel-dots {
        display: none !important;
    }
}

/* aqui termina el carrucel 3d mejorado*/ 

/* ===== FALLBACKS Y MEJORAS ===== */

/* Fallback para imágenes que no cargan */
.university-logo-img:not([src]),
.university-logo-img[src=""] {
    display: none;
}

.university-logo-container:has(.university-logo-img:not([src])),
.university-logo-container:has(.university-logo-img[src=""]) {
    background: var(--primary-blue);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
}

.university-logo-container:has(.university-logo-img:not([src]))::after,
.university-logo-container:has(.university-logo-img[src=""])::after {
    content: '🏛️';
}

/* Optimización de rendimiento */
.university-logo-img {
    will-change: filter, transform;
}

.university-card {
    will-change: transform, box-shadow;
}


/* ===== COLLAGE FUTRAVIF CON FOTOS COMO RELLENO DE LETRAS ===== */

.futravif-collage {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.letter-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(4px, 1vw, 12px);
    flex-wrap: wrap;
    max-width: 100%;
}

.collage-letter {
    font-family: 'Arial Black', Arial, sans-serif;
    font-size: clamp(120px, 18vw, 190px);
    font-weight: 900;
    line-height: 1;
    color: transparent;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-clip: text;
    -webkit-background-clip: text;
    text-shadow: 0 0 0 rgba(0,0,0,0.1);
    transition: var(--transition-normal);
    cursor: pointer;
    position: relative;
    filter: drop-shadow(3px 3px 6px rgba(0, 0, 0, 0.3));
}

/* Asignar cada foto a cada letra */
.letter-f { 
    background-image: url('img/collage/f1.png');
}

.letter-u { 
    background-image: url('img/collage/u.png');
}

.letter-t { 
    background-image: url('img/collage/t.png');
}

.letter-r { 
    background-image: url('img/collage/r.png');
}

.letter-a { 
    background-image: url('img/collage/a.png');
}

.letter-v { 
    background-image: url('img/collage/v.png');
}

.letter-i { 
    background-image: url('img/collage/i.png');
}

.letter-f2 { 
    background-image: url('img/collage/f2.png');
}

/* Efectos de hover */
.collage-letter:hover {
    transform: translateY(-5px) scale(1.05);
    filter: drop-shadow(0 8px 16px rgba(44, 114, 183, 0.4));
    z-index: 10;
}

/* Crear un borde sutil para definir mejor las letras */
.collage-letter::before {
    content: attr(data-letter);
    position: absolute;
    top: 2px;
    left: 2px;
    font-size: inherit;
    font-weight: inherit;
    color: rgba(0, 0, 0, 0.2);
    z-index: -1;
    background-clip: initial;
    -webkit-background-clip: initial;
}

/* Animación de entrada */
.collage-letter {
    opacity: 0;
    transform: translateY(30px) scale(0.8);
    animation: letterFadeIn 0.8s ease forwards;
}

/* Delays escalonados para cada letra */
.letter-f { animation-delay: 0.2s; }
.letter-u { animation-delay: 0.3s; }
.letter-t { animation-delay: 0.4s; }
.letter-r { animation-delay: 0.5s; }
.letter-a { animation-delay: 0.6s; }
.letter-v { animation-delay: 0.7s; }
.letter-i { animation-delay: 0.8s; }
.letter-f2 { animation-delay: 0.9s; }

@keyframes letterFadeIn {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Fallback para navegadores que no soporten background-clip: text */
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
    .collage-letter {
        color: var(--primary-blue);
        background: none;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablets */
@media (max-width: 768px) {
    .letter-container {
        gap: clamp(3px, 0.8vw, 10px);
        padding: 0 var(--spacing-sm);
    }
    
    .collage-letter {
        font-size: clamp(90px, 15vw, 180px);
    }
    
    .collage-letter:hover {
        transform: translateY(-3px) scale(1.03);
    }
}

/* Móviles */
@media (max-width: 480px) {
    .letter-container {
        gap: clamp(2px, 0.5vw, 8px);
        padding: 0 var(--spacing-xs);
    }
    
    .collage-letter {
        font-size: clamp(70px, 12vw, 140px);
    }
    
    .collage-letter:hover {
        transform: translateY(-2px) scale(1.02);
    }
}

/* Móviles muy pequeños */
@media (max-width: 360px) {
    .letter-container {
        gap: 2px;
    }
    
    .collage-letter {
        font-size: clamp(60px, 10vw, 120px);
    }
}

/* ===== ACCESIBILIDAD ===== */

@media (prefers-reduced-motion: reduce) {
    .collage-letter {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    
    .collage-letter:hover {
        transform: none !important;
    }
}

/* Estados de focus */
.collage-letter:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 4px;
    border-radius: var(--border-radius);
}

/* ===== SECCIÓN DE VIDEO ===== */

.video-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    background: linear-gradient(135deg, rgba(44, 114, 183, 0.05), rgba(15, 45, 63, 0.05));
    border-radius: var(--border-radius-lg);
    position: relative;
    overflow: hidden;
}

.video-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(44, 114, 183, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: float 25s ease-in-out infinite;
    pointer-events: none;
}

.video-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.video-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    color: var(--dark-blue);
    margin-bottom: var(--spacing-sm);
    font-weight: bold;
    position: relative;
}

.video-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--dark-blue));
    border-radius: 2px;
}

.video-description {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Container principal del video */
.video-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.video-wrapper {
    position: relative;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    aspect-ratio: 16/9;
    margin-bottom: var(--spacing-md);
}

/* Video principal */
.main-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--dark-gray);
    cursor: pointer;
}

/* Overlay con botón de play */
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    opacity: 1;
    backdrop-filter: blur(2px);
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.play-button {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border: none;
    border-radius: 50%;
    color: var(--white);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    box-shadow: var(--shadow-lg);
}

.play-button::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

.play-button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(44, 114, 183, 0.4);
}

.play-button i {
    margin-left: 3px; /* Centrar visualmente el ícono de play */
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

/* Controles del video */
.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: var(--spacing-sm);
    transform: translateY(100%);
    transition: var(--transition-normal);
}

.video-wrapper:hover .video-controls,
.video-controls.visible {
    transform: translateY(0);
}

/* Barra de progreso */
.progress-container {
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-blue), var(--dark-blue));
    border-radius: 2px;
    width: 0;
    transition: width 0.1s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--white);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: var(--transition-fast);
}

.progress-bar:hover .progress-fill::after {
    opacity: 1;
}

/* Fila de controles */
.controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Botones de control */
.control-btn {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.1rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--primary-blue);
}

/* Container de volumen */
.volume-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.volume-slider {
    width: 80px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    outline: none;
    border-radius: 2px;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition-fast);
}

.volume-container:hover .volume-slider {
    opacity: 1;
}

.volume-slider::-webkit-slider-thumb {
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--white);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--white);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Display de tiempo */
.time-display {
    color: var(--white);
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
    min-width: 80px;
    text-align: center;
}

/* Estadísticas del video */
.video-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    background: var(--white);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-top: var(--spacing-sm);
}

.video-stats .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    text-align: center;
    min-width: 80px;
}

.video-stats .stat-item i {
    color: var(--primary-blue);
    font-size: 1.2rem;
}

.video-stats .stat-number {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--dark-blue);
}

.video-stats .stat-label {
    font-size: 0.85rem;
    color: var(--gray);
}

/* Botón de compartir */
.share-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: var(--white);
    border: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Estados del video */
.video-wrapper.playing .video-overlay {
    opacity: 0;
    pointer-events: none;
}

.video-wrapper.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablets */
@media (max-width: 768px) {
    .video-section {
        margin-top: var(--spacing-lg);
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .play-button {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .video-stats {
        gap: var(--spacing-sm);
    }
    
    .video-stats .stat-item {
        min-width: 60px;
    }
    
    .controls-row {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .volume-container {
        display: none; /* Ocultar controles de volumen en móviles */
    }
    
    .time-display {
        font-size: 0.8rem;
        min-width: auto;
    }
}

/* Móviles */
@media (max-width: 480px) {
    .video-description {
        font-size: 1rem;
        padding: 0 var(--spacing-sm);
    }
    
    .play-button {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .video-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
    
    .video-stats .stat-item {
        flex-direction: row;
        gap: var(--spacing-xs);
        min-width: auto;
        width: 100%;
        justify-content: center;
    }
    
    .video-controls {
        padding: var(--spacing-xs);
    }
    
    .control-btn {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .progress-bar {
        height: 6px;
    }
    
    .progress-fill::after {
        width: 16px;
        height: 16px;
        right: -8px;
    }
}

/* ===== ACCESIBILIDAD ===== */

/* Reducir movimiento para usuarios que lo prefieren */
@media (prefers-reduced-motion: reduce) {
    .play-button::before,
    .video-section::before {
        animation: none !important;
    }
    
    .play-button:hover,
    .share-btn:hover {
        transform: none !important;
    }
}

/* Focus states mejorados */
.play-button:focus,
.control-btn:focus,
.share-btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.progress-bar:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

/* Estados de alto contraste */
@media (prefers-contrast: high) {
    .video-overlay {
        background: rgba(0, 0, 0, 0.7);
    }
    
    .video-controls {
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.95));
    }
    
    .progress-bar {
        background: rgba(255, 255, 255, 0.5);
    }
}

/* Print styles */
@media print {
    .video-section {
        display: none !important;
    }
}

/* Fullscreen styles */
.video-wrapper:-webkit-full-screen {
    width: 100vw;
    height: 100vh;
}

.video-wrapper:-moz-full-screen {
    width: 100vw;
    height: 100vh;
}

.video-wrapper:fullscreen {
    width: 100vw;
    height: 100vh;
}

/* Loading spinner animation */
@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}