/* ============================================
   INSTITUTO RUTHERFORD - STYLES
   ============================================ */

/* CSS Variables - Colores del Instituto */
:root {
    /* Colores principales */
    --color-primary: #B31F1F;        /* Rojo institucional */
    --color-primary-dark: #7A1313;   /* Rojo oscuro/granate */
    --color-primary-light: #D62B2B;  /* Rojo más claro */
    
    /* Colores secundarios */
    --color-secondary: #1A1A1A;      /* Negro/gris antracita */
    --color-secondary-light: #2D2D2D; /* Gris antracita claro */
    --color-secondary-dark: #000000;  /* Negro puro */
    
    /* Colores de acento */
    --color-accent: #7A1313;         /* Rojo oscuro/granate */
    --color-success: #38a169;        /* Verde para éxito */
    --color-info: #3182ce;           /* Azul info */
    
    /* Colores neutros */
    --color-white: #ffffff;
    --color-gray-50: #F2F2F2;        /* Gris claro */
    --color-gray-100: #E5E5E5;
    --color-gray-200: #D4D4D4;
    --color-gray-300: #A3A3A3;
    --color-gray-400: #6B6B6B;
    --color-gray-500: #4B4B4B;
    --color-gray-600: #333333;
    --color-gray-700: #1A1A1A;
    --color-gray-800: #121212;
    --color-gray-900: #000000;
    
    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Bordes */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Transiciones */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Reset y Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed;
    top: 20px;
    left: 10px;
    right: 10px;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(179, 31, 31, 0.1);
    transition: all var(--transition-normal);
    border-radius: var(--border-radius-lg);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
    padding: 0 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    height: 70px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
    letter-spacing: -0.025em;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text span {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    font-weight: 600;
    color: var(--color-gray-700);
    position: relative;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: rgba(179, 31, 31, 0.05);
}

.nav-link:hover::after {
    width: 60%;
}

.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--color-primary);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    background-color: rgba(179, 31, 31, 0.1);
}

.mobile-menu-btn:hover {
    background-color: rgba(179, 31, 31, 0.2);
    transform: scale(1.05);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 110px;
    left: 10px;
    right: 10px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 1rem;
    z-index: 999;
    flex-direction: column;
    gap: 0.25rem;
    border-bottom: 1px solid rgba(179, 31, 31, 0.1);
    border-radius: var(--border-radius-lg);
}

.mobile-menu.active {
    display: flex;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav-link {
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--color-gray-700);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.mobile-nav-link:hover {
    background-color: rgba(179, 31, 31, 0.1);
    color: var(--color-primary);
}

.mobile-nav-link.active {
    background-color: rgba(179, 31, 31, 0.15);
    color: var(--color-primary);
    font-weight: 700;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
    pointer-events: none;
}

.hero-content-wrapper {
    display: flex;
    align-items: center;
    gap: 3rem;
    padding: 4rem 0;
}

.hero-logo-large {
    flex: 0 0 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-logo-img {
    width: 100%;
    height: auto;
    max-width: 300px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    opacity: 0.95;
    transition: all var(--transition-normal);
}

.hero-logo-img:hover {
    opacity: 1;
    transform: scale(1.05);
}

.hero-content {
    position: relative;
    z-index: 1;
    flex: 1;
    max-width: 700px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 1rem;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-white);
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-white);
    margin-bottom: 2.5rem;
    line-height: 1.7;
    opacity: 0.95;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 2.5rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: 0 8px 20px rgba(179, 31, 31, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(179, 31, 31, 0.4);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 8px 20px rgba(179, 31, 31, 0.3);
}

.btn-large {
    padding: 1.5rem 3rem;
    font-size: 1.125rem;
}

.btn i {
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.btn:hover i {
    transform: translateX(3px);
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats {
    background-color: var(--color-gray-50);
    padding: 4rem 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
}

.stat-item i {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-top: 0.5rem;
    font-weight: 500;
}

/* ============================================
   SECTIONS COMMON
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   MATERIAS SECTION
   ============================================ */
.materias {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-normal);
    border: 2px solid var(--color-gray-200);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-btn:hover {
    background-color: var(--color-gray-50);
    border-color: var(--color-gray-300);
    transform: translateY(-1px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(179, 31, 31, 0.3);
}

.materias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.materia-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.materia-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.materia-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.materia-card:hover::before {
    transform: scaleX(1);
}

.materia-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: 0 8px 20px rgba(179, 31, 31, 0.2);
}

.materia-icon i {
    font-size: 2rem;
    color: var(--color-white);
}

.materia-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.025em;
}

.materia-level {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 2rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.materia-btn {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    font-weight: 700;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 15px rgba(179, 31, 31, 0.3);
    border: none;
}

.materia-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(179, 31, 31, 0.4);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

/* ============================================
   CLASES ESPECIFICAS
   ============================================ */
.clases-especificas {
    padding: 6rem 0;
    background-color: var(--color-gray-50);
}

.especificas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.especifica-card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
}

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

.especifica-card i {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.especifica-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.especifica-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ============================================
   PROFESORES SECTION
   ============================================ */
.profesores {
    padding: 6rem 0;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    position: relative;
    overflow: hidden;
}

.profesores::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 10%, rgba(179, 31, 31, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 90%, rgba(179, 31, 31, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.profesores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.profesor-card {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    padding: 2.5rem;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    text-align: center;
    border: 1px solid rgba(179, 31, 31, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.profesor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.profesor-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
    background: var(--color-white);
}

.profesor-card:hover::before {
    transform: scaleX(1);
}

.profesor-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: 0 15px 40px rgba(179, 31, 31, 0.4);
    position: relative;
    z-index: 2;
    border: 3px solid rgba(255, 255, 255, 0.9);
}

.profesor-icon::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    z-index: -1;
    filter: blur(10px);
    opacity: 0.5;
}

.profesor-icon::after {
    content: '';
    position: absolute;
    top: -15px;
    left: -15px;
    right: -15px;
    bottom: -15px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: -2;
    box-shadow: 0 0 30px rgba(179, 31, 31, 0.3);
}

.profesor-card:hover .profesor-icon::after {
    opacity: 1;
    transform: scale(1.1);
    border-color: rgba(255, 255, 255, 0.9);
}

.profesor-icon i {
    font-size: 2.25rem;
    color: var(--color-white);
    transition: all var(--transition-fast);
    position: relative;
    z-index: 3;
}

.profesor-card:hover .profesor-icon i {
    transform: scale(1.15);
    filter: drop-shadow(0 5px 10px rgba(0, 0, 0, 0.3));
}

.profesor-card h3 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
    position: relative;
    display: inline-block;
}

.profesor-card h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: 2px;
    opacity: 0;
    transition: all var(--transition-normal);
}

.profesor-card:hover h3::after {
    opacity: 1;
    width: 100%;
}

.profesor-card p {
    color: var(--color-gray-700);
    line-height: 1.7;
    font-size: 0.9375rem;
    font-weight: 500;
    opacity: 0.9;
}

/* ============================================
   MODALIDAD SECTION
   ============================================ */
.modalidad {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.modalidad .section-title {
    color: var(--color-white);
}

.modalidad .section-subtitle {
    color: var(--color-gray-300);
}

.modalidad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.modalidad-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--border-radius-xl);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
}

.modalidad-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.modalidad-icon {
    width: 80px;
    height: 80px;
    background-color: var(--color-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.modalidad-icon i {
    font-size: 2rem;
    color: var(--color-primary-dark);
}

.modalidad-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.modalidad-card p {
    color: var(--color-gray-300);
    line-height: 1.7;
}

/* ============================================
   CONTACTO SECTION
   ============================================ */
.contacto {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.contacto-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contacto-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contacto-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background-color: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-gray-100);
}

.contacto-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.contacto-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(179, 31, 31, 0.2);
}

.contacto-icon i {
    font-size: 1.5rem;
    color: var(--color-white);
}

.contacto-details h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.contacto-details a,
.contacto-details p {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.contacto-details a:hover {
    color: var(--color-primary-dark);
}

.contacto-social {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contacto-social h3 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
    text-align: center;
}

/* Contact Cards */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Responsive para tablets y móviles - tarjetas una debajo de la otra */
@media (max-width: 1024px) {
    .contact-cards {
        grid-template-columns: 1fr;
    }
}

.contact-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: 0 8px 20px rgba(179, 31, 31, 0.2);
}

.contact-icon i {
    font-size: 2rem;
    color: var(--color-white);
}

.contact-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.contact-card p {
    font-size: 1.125rem;
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: 0;
}

.contact-card a {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-card a:hover {
    color: var(--color-primary-dark);
}

.social-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    background-color: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-decoration: none;
    border: 1px solid var(--color-gray-100);
    position: relative;
    overflow: hidden;
}

.social-btn i {
    font-size: 2rem;
    transition: all var(--transition-fast);
}

.social-btn span {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

/* Instagram */
.social-btn.instagram {
    border-color: #E1306C;
}

.social-btn.instagram:hover {
    background: linear-gradient(135deg, #E1306C 0%, #F77737 100%);
    border-color: #E1306C;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(225, 48, 108, 0.3);
}

.social-btn.instagram:hover i {
    color: var(--color-white);
    transform: scale(1.1);
}

.social-btn.instagram:hover span {
    color: var(--color-white);
}

/* Facebook */
.social-btn.facebook {
    border-color: #1877F2;
}

.social-btn.facebook:hover {
    background: linear-gradient(135deg, #1877F2 0%, #4267B2 100%);
    border-color: #1877F2;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(24, 119, 242, 0.3);
}

.social-btn.facebook:hover i {
    color: var(--color-white);
    transform: scale(1.1);
}

.social-btn.facebook:hover span {
    color: var(--color-white);
}

/* YouTube */
.social-btn.youtube {
    border-color: #FF0000;
}

.social-btn.youtube:hover {
    background: linear-gradient(135deg, #FF0000 0%, #CD201F 100%);
    border-color: #FF0000;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 0, 0, 0.3);
}

.social-btn.youtube:hover i {
    color: var(--color-white);
    transform: scale(1.1);
}

.social-btn.youtube:hover span {
    color: var(--color-white);
}

/* TikTok */
.social-btn.tiktok {
    border-color: #000000;
}

.social-btn.tiktok:hover {
    background: linear-gradient(135deg, #000000 0%, #696969 100%);
    border-color: #000000;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.social-btn.tiktok:hover i {
    color: var(--color-white);
    transform: scale(1.1);
}

.social-btn.tiktok:hover span {
    color: var(--color-white);
}

/* X (Twitter) */
.social-btn.x-social {
    border-color: #000000;
}

.social-btn.x-social:hover {
    background: linear-gradient(135deg, #000000 0%, #696969 100%);
    border-color: #000000;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.social-btn.x-social:hover i {
    color: var(--color-white);
    transform: scale(1.1);
}

.social-btn.x-social:hover span {
    color: var(--color-white);
}

/* Spotify */
.social-btn.spotify {
    border-color: #1DB954;
}

.social-btn.spotify:hover {
    background: linear-gradient(135deg, #1DB954 0%, #1ED760 100%);
    border-color: #1DB954;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(29, 185, 84, 0.3);
}

.social-btn.spotify:hover i {
    color: var(--color-white);
    transform: scale(1.1);
}

.social-btn.spotify:hover span {
    color: var(--color-white);
}

/* Responsive para móviles */
@media (max-width: 768px) {
    .contacto-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .social-buttons {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   FOOTER MINIMAL
   ============================================ */
.footer-minimal {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: 2rem 0 0.5rem;
    position: relative;
    overflow: hidden;
    margin-top: 2rem;
}

.footer-content-minimal {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    position: relative;
    z-index: 1;
}

.footer-logo-minimal {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo-minimal img {
    height: 30px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    transition: all var(--transition-normal);
}

.footer-logo-minimal img:hover {
    transform: scale(1.05);
}

.footer-logo-minimal p {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
    margin: 0;
}

.footer-links-minimal ul {
    display: flex;
    gap: 1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links-minimal a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.footer-links-minimal a:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

.footer-contact-minimal p {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-contact-minimal i {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom-minimal {
    position: relative;
    z-index: 1;
    text-align: center;
    font-size: 0.6875rem;
    color: rgba(255, 255, 255, 0.7);
    padding-top: 0.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom-minimal p {
    margin: 0;
}

/* Responsive para móviles */
@media (max-width: 768px) {
    .footer-content-minimal {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .footer-links-minimal ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ============================================
   MODAL PROFESIONAL
   ============================================ */
.modal-profesional {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.5));
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    backdrop-filter: blur(10px);
    animation: modalBackdropIn 0.3s ease-out;
}

@keyframes modalBackdropIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(10px);
    }
}

.modal-profesional.active {
    display: flex;
}

.modal-content-profesional {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    border-radius: var(--border-radius-xl);
    max-width: 1200px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(179, 31, 31, 0.1);
    animation: modalSlideIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    display: flex;
    flex-direction: column;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header-profesional {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.modal-header-profesional::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
}

.modal-header-profesional h3 {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    margin: 0;
}

.modal-close-profesional {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.125rem;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    cursor: pointer;
}

.modal-close-profesional:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.modal-body-profesional {
    padding: 2rem;
    overflow-y: auto;
    max-height: calc(90vh - 100px);
    scrollbar-width: thin;
    scrollbar-color: var(--color-gray-300) var(--color-gray-100);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.modal-body-profesional::-webkit-scrollbar {
    width: 8px;
}

.modal-body-profesional::-webkit-scrollbar-track {
    background: var(--color-gray-100);
    border-radius: 4px;
}

.modal-body-profesional::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: 4px;
    transition: background var(--transition-fast);
}

.modal-body-profesional::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

.modal-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(179, 31, 31, 0.1);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.modal-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary), var(--color-primary-light));
}

.modal-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 1);
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section h4 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.025em;
}

.modal-section h4 i {
    font-size: 1.5rem;
    color: var(--color-primary);
    background: rgba(179, 31, 31, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-section:hover h4 i {
    background: rgba(179, 31, 31, 0.2);
    transform: scale(1.1);
}

.modal-section ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.modal-section li {
    position: relative;
    padding: 0.75rem 0;
    color: var(--color-gray-700);
    font-size: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-fast);
}

.modal-section li:last-child {
    border-bottom: none;
}

.modal-section li:hover {
    background: rgba(179, 31, 31, 0.05);
    padding-left: 1rem;
    color: var(--color-primary);
}

.modal-section li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    opacity: 0;
    transition: all var(--transition-fast);
}

.modal-section li:hover::before {
    opacity: 1;
    transform: translateY(-50%) scale(1.5);
}

/* Two-column layout for lists with more than 5 items */
.two-column-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.two-column-list ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.two-column-list li {
    position: relative;
    padding: 0.75rem 0;
    color: var(--color-gray-700);
    font-size: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-fast);
}

.two-column-list li:last-child {
    border-bottom: none;
}

.two-column-list li:hover {
    background: rgba(179, 31, 31, 0.05);
    padding-left: 1rem;
    color: var(--color-primary);
}

.two-column-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    opacity: 0;
    transition: all var(--transition-fast);
}

.two-column-list li:hover::before {
    opacity: 1;
    transform: translateY(-50%) scale(1.5);
}

.modal-cta {
    grid-column: 3;
    margin-top: 0;
    padding: 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--border-radius-xl);
    color: var(--color-white);
    box-shadow: var(--shadow-xl);
    align-self: start;
    margin-top: 1rem;
}

.modal-cta p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    line-height: 1.6;
}

.modal-cta .btn {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: 0 8px 25px rgba(179, 31, 31, 0.4);
    border: none;
    transition: all var(--transition-normal);
}

.modal-cta .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(179, 31, 31, 0.5);
}

/* Responsive para móviles */
@media (max-width: 1024px) {
    .modal-body-profesional {
        grid-template-columns: 1fr;
        padding: 1.5rem;
        max-height: calc(90vh - 100px);
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .modal-cta {
        grid-column: 1;
        margin-top: 0;
        padding: 1.5rem;
        align-self: stretch;
        order: 2;
    }
    
    /* Aseguramos que los temas estén arriba */
    .modal-section {
        order: 1;
    }
    
    .modal-header-profesional {
        padding: 1rem 1.25rem;
    }
    
    .modal-header-profesional h3 {
        font-size: 1.25rem;
    }
    
    .modal-close-profesional {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .modal-section {
        padding: 1.25rem;
        margin-bottom: 1.5rem;
    }
    
    .modal-section h4 {
        font-size: 1.125rem;
        gap: 0.5rem;
    }
    
    .modal-section h4 i {
        width: 35px;
        height: 35px;
        font-size: 1.25rem;
    }
    
    .modal-section li {
        padding: 0.625rem 0;
        font-size: 0.875rem;
    }
    
    .two-column-list {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 1rem;
    }
    
    .two-column-list li {
        padding: 0.625rem 0;
        font-size: 0.875rem;
    }
    
    .modal-cta p {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .modal-cta .btn {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    /* Full-screen modal on very small screens */
    @media (max-width: 480px) {
        .modal-profesional {
            padding: 0.5rem;
        }
        
        .modal-content-profesional {
            max-height: 95vh;
            border-radius: var(--border-radius-lg);
        }
        
        .modal-header-profesional {
            padding: 0.75rem 1rem;
        }
        
        .modal-header-profesional h3 {
            font-size: 1.125rem;
        }
        
        .modal-body-profesional {
            padding: 1rem;
            max-height: calc(95vh - 80px);
        }
        
        .modal-section {
            padding: 1rem;
            margin-bottom: 1.25rem;
        }
        
        .modal-section h4 {
            font-size: 1rem;
        }
        
        .modal-section h4 i {
            width: 30px;
            height: 30px;
            font-size: 1.125rem;
        }
        
        .modal-section li {
            padding: 0.5rem 0;
            font-size: 0.8125rem;
        }
        
        .modal-cta {
            padding: 1.25rem;
            margin-top: 1rem;
        }
        
        .modal-cta p {
            font-size: 0.875rem;
        }
        
        .modal-cta .btn {
            padding: 0.875rem 1.5rem;
            font-size: 0.875rem;
        }
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.75rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modalidad-grid {
        grid-template-columns: 1fr;
    }
    
    .contacto-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Header improvements for tablet landscape */
    .header-content {
        height: 95px;
        padding: 0 1rem;
    }
}

@media (max-width: 768px) {
    /* Header improvements for mobile */
    .header-content {
        justify-content: space-between;
        padding: 0 1rem;
        height: 100px;
    }
    
    .logo {
        position: relative;
        left: 0;
        transform: none;
        z-index: 1;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    /* Hero section improvements for mobile */
    .hero-content-wrapper {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        padding: 2rem 0;
    }
    
    .hero-logo-large {
        flex: 0 0 200px;
        width: 100%;
        max-width: 250px;
    }
    
    .hero-logo-img {
        max-width: 250px;
        height: auto;
    }
    
    .hero-content {
        flex: 1;
        max-width: 100%;
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    /* Section improvements */
    .section-title {
        font-size: 1.875rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .materias-grid {
        grid-template-columns: 1fr;
    }
    
    .universidades-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .logo-text h1 {
        font-size: 1rem;
    }
    
    .logo-text span {
        font-size: 0.75rem;
    }
    
    .logo img {
        height: 40px;
    }
}

/* ============================================
   UTILITIES
   ============================================ */
.border-radius-full {
    border-radius: 9999px;
}

.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}