/* English Pro Academy - CSS Styles */

/* Variables CSS */
:root {
    /* Colores principales - Tema educativo y profesional */
    --primary-color: #2563eb;          /* Azul académico */
    --primary-dark: #1d4ed8;           /* Azul más oscuro */
    --secondary-color: #10b981;        /* Verde éxito */
    --accent-color: #f59e0b;           /* Naranja energético */
    --success-color: #059669;          /* Verde confirmación */
    --danger-color: #dc2626;           /* Rojo error */
    --warning-color: #d97706;          /* Amarillo advertencia */
    --info-color: #0891b2;             /* Cyan información */

    /* Colores de fondo */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #1e293b;
    --bg-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --bg-hero: linear-gradient(135deg, #1e40af 0%, #1d4ed8 50%, #2563eb 100%);

    /* Colores de texto */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #ffffff;
    --text-muted: #94a3b8;

    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Espaciados */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Bordes y sombras */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --box-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --box-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* Contenedores */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-alt {
    background-color: var(--bg-secondary);
}

/* Header y navegación */
.header {
    background: var(--bg-primary);
    box-shadow: var(--box-shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    text-decoration: none;
    font-family: var(--font-secondary);
}

.nav-logo i {
    margin-right: var(--spacing-xs);
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin-left: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-close,
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: var(--bg-hero);
    color: var(--text-light);
    padding: 120px 0 var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.hero-badge i {
    margin-right: var(--spacing-xs);
    color: var(--accent-color);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

.hero-title .highlight {
    color: var(--accent-color);
    position: relative;
}

.hero-description {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-features {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    font-size: 0.95rem;
    font-weight: var(--font-weight-medium);
}

.feature-item i {
    margin-right: var(--spacing-xs);
    color: var(--secondary-color);
    font-size: 1.1rem;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    width: 100%;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 2rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--accent-color);
    display: block;
    font-family: var(--font-secondary);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-image {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-avatar {
    width: 150px;
    height: 150px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--text-light);
    box-shadow: var(--box-shadow-xl);
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.floating-card {
    position: absolute;
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    animation: float 6s ease-in-out infinite;
}

.level-card {
    top: 20px;
    right: -20px;
    animation-delay: 0s;
}

.cert-card {
    top: 150px;
    left: -30px;
    animation-delay: 2s;
}

.time-card {
    bottom: 30px;
    right: 10px;
    animation-delay: 4s;
}

.floating-card i {
    color: var(--primary-color);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    font-family: var(--font-primary);
    white-space: nowrap;
}

.btn i {
    margin-right: var(--spacing-xs);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-light);
}

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

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

.btn-secondary:hover {
    background: var(--text-light);
    color: var(--primary-color);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-light);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* Secciones de contenido */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Niveles de inglés */
.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.level-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    border: 2px solid transparent;
}

.level-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

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

.level-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.level-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--text-light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
}

.level-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--text-light);
    font-size: 2rem;
}

.level-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.level-range {
    text-align: center;
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.level-description {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.level-skills {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.level-skills li {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.level-skills i {
    color: var(--secondary-color);
    margin-right: var(--spacing-sm);
}

.level-duration {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: 0.95rem;
}

.level-duration i {
    margin-right: var(--spacing-xs);
    color: var(--accent-color);
}

/* Cursos */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.course-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.course-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 4rem;
    position: relative;
}

.course-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--accent-color);
    color: var(--text-light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
}

.course-content {
    padding: var(--spacing-xl);
}

.course-title {
    font-size: 1.4rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.course-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.course-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px var(--spacing-sm);
    border-radius: 15px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.feature-tag i {
    font-size: 0.7rem;
}

.course-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-top: 1px solid #e2e8f0;
}

.course-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-amount {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.price-period {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.course-duration {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: 0.95rem;
}

.course-btn {
    width: 100%;
}

/* Profesores */
.teachers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.teacher-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
}

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

.teacher-image {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.teacher-avatar {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: var(--text-light);
    font-size: 3rem;
    box-shadow: var(--box-shadow-lg);
}

.teacher-photo {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--text-light);
    font-size: 3rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    overflow: hidden;
}

.teacher-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.teacher-flag {
    position: absolute;
    bottom: 0;
    right: calc(50% - 60px + 20px);
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    border: 3px solid var(--bg-primary);
}

.teacher-name {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.teacher-specialty {
    color: var(--primary-color);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
}

.teacher-experience {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.teacher-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.teacher-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: 4px var(--spacing-sm);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
}

/* Test de nivelación */
.test-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.test-features {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.test-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.test-feature i {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.feature-content h4 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 4px;
    color: var(--text-primary);
}

.feature-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.test-levels h4 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.level-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.level-badge {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--primary-color);
}

.test-form-container {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow-lg);
}

.test-form-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.test-form-header h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.test-form-header p {
    color: var(--text-secondary);
}

/* Formularios */
.test-form,
.contact-form {
    display: grid;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    margin-top: var(--spacing-sm);
}

.form-note i {
    color: var(--secondary-color);
}

/* Plataforma */
.platform-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.platform-mockup {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--box-shadow-xl);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
    transition: var(--transition);
}

.platform-mockup:hover {
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
}

.mockup-header {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.mockup-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.mockup-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f57;
}

.mockup-buttons span:nth-child(2) {
    background: #ffbd2e;
}

.mockup-buttons span:nth-child(3) {
    background: #28ca42;
}

.mockup-title {
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.mockup-content {
    padding: var(--spacing-xl);
}

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

.dashboard-preview i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.dashboard-preview h4 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.progress-bars {
    display: grid;
    gap: var(--spacing-md);
}

.progress-item {
    text-align: left;
}

.progress-item span {
    display: block;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 1s ease-out;
}

.platform-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-lg);
}

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

.feature-title {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

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

/* Testimonios */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.stars {
    display: flex;
    gap: 4px;
    margin-bottom: var(--spacing-md);
}

.stars i {
    color: var(--accent-color);
    font-size: 1.1rem;
}

.testimonial-text {
    color: var(--text-secondary);
    line-height: 1.7;
    font-style: italic;
    font-size: 1.05rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 1.5rem;
}

.author-name {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 4px;
    color: var(--text-primary);
}

.author-role {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.author-level {
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
}

/* Contacto */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info {
    display: grid;
    gap: var(--spacing-lg);
}

.contact-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form-container {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow-lg);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

.footer-logo i {
    margin-right: var(--spacing-xs);
    color: var(--accent-color);
}

.footer-description {
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

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

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

.social-link:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

.footer-title {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
}

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

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

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-light);
}

.footer-contact {
    display: grid;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.contact-item i {
    color: var(--accent-color);
    margin-top: 4px;
    width: 16px;
}

.contact-item span {
    color: #94a3b8;
    line-height: 1.5;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #94a3b8;
    font-size: 0.9rem;
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-bottom-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom-links a:hover {
    color: var(--text-light);
}

/* WhatsApp Float Button */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    text-decoration: none;
    box-shadow: var(--box-shadow-lg);
    z-index: 1000;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: white;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90%;
    overflow-y: auto;
    box-shadow: var(--box-shadow-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid #e2e8f0;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.login-form h4 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--text-primary);
}

.login-help {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    text-align: center;
}

.login-help a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.login-help a:hover {
    text-decoration: underline;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Media Queries - Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 3rem;
    }

    .test-container,
    .platform-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .platform-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-primary);
        box-shadow: var(--box-shadow);
        padding: var(--spacing-lg);
        transition: left 0.3s ease;
        flex-direction: column;
        gap: var(--spacing-md);
        z-index: 1000;
        overflow-y: auto;
    }

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

    .nav-menu li {
        margin: 0;
        width: 100%;
        text-align: center;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-md);
        font-size: 1.1rem;
    }

    .nav-link::after {
        display: none;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-item {
        margin: 0;
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-md);
        border-bottom: 1px solid #e2e8f0;
        text-align: center;
    }

    .nav-close {
        display: block;
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }

    .nav-actions {
        gap: var(--spacing-xs);
    }

    .hero {
        padding: 100px 0 var(--spacing-2xl);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1.1rem;
    }

    .hero-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .section-title {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .levels-grid,
    .courses-grid,
    .teachers-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }

    .hero-title {
        font-size: 2rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .hero-image {
        width: 250px;
        height: 250px;
    }

    .hero-avatar {
        width: 120px;
        height: 120px;
        font-size: 3rem;
    }

    .floating-card {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .modal-content {
        width: 95%;
        margin: var(--spacing-sm);
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}

/* Estados de carga */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Utilidades */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }