* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #f59e0b;
    --accent: #10b981;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-icon {
    font-size: 2rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
}

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: linear-gradient(135deg, var(--primary), #1e40af);
    border: none;
    cursor: pointer;
    padding: 12px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    transition: var(--transition);
}

.mobile-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.mobile-toggle span {
    width: 28px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: var(--transition);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Hero */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(30, 64, 175, 0.95) 100%),
                url('../image/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.4s both;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--secondary);
    color: var(--dark);
}

.btn-primary:hover {
    background: #d97706;
    transform: translateY(-2px);
}

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

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

.btn-course {
    background: var(--primary);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
}

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

.btn-full {
    width: 100%;
}

/* Stats */
.stats {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(30, 64, 175, 0.95) 100%),
                url('../image/stats-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.25);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 5px;
}

.stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* Section Title */
.section-title {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 50px;
    color: var(--dark);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--secondary);
    border-radius: 2px;
}

/* Features */
.features {
    padding: 100px 0;
    background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 50%, #bfdbfe 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 30px 25px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
}

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

.feature-image {
    width: 100%;
    height: 160px;
    margin-bottom: 20px;
    overflow: hidden;
    border-radius: 15px;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.feature-card:hover .feature-image img {
    transform: scale(1.1);
}

.feature-card h3 {
    margin-bottom: 12px;
    color: var(--dark);
    font-size: 1.1rem;
}

.feature-card p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Courses */
.courses {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 50%, #e0f2fe 100%);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.course-card {
    background: var(--light);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.course-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-card:hover .course-image {
    transform: scale(1.05);
}

.course-content {
    padding: 25px;
}

.course-tag {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 10px;
}

.course-content h3 {
    margin-bottom: 10px;
    color: var(--dark);
}

.course-content p {
    color: var(--gray);
    margin-bottom: 15px;
}

.course-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: var(--gray);
}

/* Concursos */
.concursos {
    padding: 100px 0;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 50%, #93c5fd 100%);
}

.concursos .section-subtitle {
    text-align: center;
    color: #1e3a8a;
    margin-bottom: 50px;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.concursos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.concurso-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 3px solid transparent;
}

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

.concurso-card.simulacro {
    border-color: #1e40af;
}

.concurso-card.conocimiento {
    border-color: #3b82f6;
}

.concurso-card.entrenamiento {
    border-color: #60a5fa;
}

.concurso-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 20px;
}

.concurso-card.simulacro .concurso-icon {
    background: linear-gradient(135deg, #1e40af, #1e3a8a);
}

.concurso-card.conocimiento .concurso-icon {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.concurso-card.entrenamiento .concurso-icon {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.concurso-card h3 {
    margin-bottom: 15px;
    color: var(--dark);
    font-size: 1.3rem;
}

.concurso-card > p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.7;
}

.concurso-features {
    list-style: none;
    margin-bottom: 25px;
    text-align: left;
}

.concurso-features li {
    padding: 8px 0;
    color: var(--dark);
    font-size: 0.95rem;
    border-bottom: 1px solid #e2e8f0;
}

.concurso-features li:last-child {
    border-bottom: none;
}

.concursos-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.concurso-stat {
    background: var(--white);
    padding: 25px 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.concurso-stat .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
}

.concurso-stat .stat-label {
    color: var(--gray);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Ciclos de Reforzamiento */
.ciclos {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 50%, #e0f2fe 100%);
}

.ciclos-subtitle {
    text-align: center;
    color: #1e3a8a;
    margin-bottom: 50px;
    font-size: 1.1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.ciclos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.ciclo-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.ciclo-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.ciclo-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #1e40af, #1e3a8a);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 10;
    letter-spacing: 1px;
}

.ciclo-card.preuni .ciclo-badge {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.ciclo-card.beca18 .ciclo-badge {
    background: linear-gradient(135deg, #059669, #047857);
}

.ciclo-card.beca18 .btn-ciclo {
    background: linear-gradient(135deg, #059669, #047857);
}

.ciclo-card.beca18 .btn-ciclo:hover {
    background: linear-gradient(135deg, #047857, #059669);
}

.ciclo-card.onem .ciclo-badge {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

.ciclo-card.onem .btn-ciclo {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

.ciclo-card.onem .btn-ciclo:hover {
    background: linear-gradient(135deg, #6d28d9, #7c3aed);
}

.ciclo-card.secundaria .ciclo-badge {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.ciclo-card.ciclocero .ciclo-badge {
    background: linear-gradient(135deg, #0891b2, #0e7490);
}

.ciclo-card.ciclocero .btn-ciclo {
    background: linear-gradient(135deg, #0891b2, #0e7490);
}

.ciclo-card.ciclocero .btn-ciclo:hover {
    background: linear-gradient(135deg, #0e7490, #0891b2);
}

.ciclo-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.ciclo-card:hover .ciclo-image {
    transform: scale(1.05);
}

.ciclo-content {
    padding: 25px;
}

.ciclo-content h3 {
    color: var(--dark);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.ciclo-content > p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 15px;
}

.ciclo-features {
    list-style: none;
    margin-bottom: 20px;
}

.ciclo-features li {
    padding: 8px 0;
    color: var(--dark);
    font-size: 0.85rem;
    border-bottom: 1px solid #e2e8f0;
}

.ciclo-features li:last-child {
    border-bottom: none;
}

.ciclo-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
}

.ciclo-meta span {
    color: #1e3a8a;
    font-size: 0.85rem;
    font-weight: 500;
}

.btn-ciclo {
    display: block;
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, #1e40af, #1e3a8a);
    color: var(--white);
    text-align: center;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.btn-ciclo:hover {
    background: linear-gradient(135deg, #1e3a8a, #1e40af);
    transform: translateY(-2px);
}

.ciclo-card.preuni .btn-ciclo {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.ciclo-card.preuni .btn-ciclo:hover {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
}

.ciclo-card.secundaria .btn-ciclo {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.ciclo-card.secundaria .btn-ciclo:hover {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
}

/* Teachers */
.teachers {
    padding: 100px 0;
    background: linear-gradient(180deg, #e0f2fe 0%, #dbeafe 50%, #bfdbfe 100%);
}

.teachers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.teacher-card {
    background: var(--white);
    padding: 30px 25px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.teacher-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 20px;
    object-fit: cover;
    border: 4px solid var(--primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.teacher-card:hover .teacher-photo {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.teacher-card h3 {
    margin-bottom: 5px;
    color: var(--dark);
    font-size: 1.2rem;
}

.teacher-specialty {
    display: block;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.teacher-card p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Testimonials */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--light);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.testimonial-text {
    font-size: 1.1rem;
    color: var(--dark);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-photo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary);
}

.testimonial-author strong {
    display: block;
    color: var(--dark);
}

.testimonial-author span {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Contact */
.contact {
    padding: 100px 0;
    background: linear-gradient(180deg, #f0f9ff 0%, #dbeafe 50%, #bfdbfe 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.info-icon {
    font-size: 2rem;
}

.info-item h4 {
    margin-bottom: 5px;
    color: var(--dark);
}

.info-item p {
    color: var(--gray);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* Footer */
.footer {
    background: linear-gradient(180deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--white);
}

.footer-section h4 {
    color: var(--secondary);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-section p {
    color: #94a3b8;
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

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

.footer-section ul a:hover {
    color: var(--secondary);
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding: 20px 0;
    text-align: center;
    color: #94a3b8;
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    z-index: 9999;
    color: white;
}

.whatsapp-btn svg {
    width: 30px;
    height: 30px;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

/* Responsive */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ciclos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .concursos-grid,
    .concursos-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
        flex-direction: column;
        padding: 0;
        gap: 0;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
        z-index: 9999;
    }
    
    .nav-list.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-list li {
        border-bottom: 1px solid #e2e8f0;
    }
    
    .nav-list li:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        display: block;
        padding: 18px 25px;
        font-size: 1rem;
        font-weight: 500;
        color: var(--dark);
        transition: all 0.3s ease;
    }
    
    .nav-link:hover,
    .nav-link.active {
        background: linear-gradient(90deg, var(--primary), #1e40af);
        color: var(--white);
        padding-left: 30px;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .stats-grid,
    .features-grid,
    .courses-grid,
    .ciclos-grid,
    .concursos-grid,
    .concursos-stats,
    .teachers-grid,
    .testimonials-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .whatsapp-btn {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
}