/* ===================================
   VARIABLES Y RESET
   =================================== */
:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #fbbf24;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
    --light-bg: #f9fafb;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Merriweather', serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-color);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

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

/* ===================================
   HEADER
   =================================== */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: var(--white);
    padding: 1.5rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo h1 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--white);
    font-weight: 600;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.main-nav a:hover {
    border-bottom-color: var(--accent-color);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    background: linear-gradient(rgba(30, 58, 138, 0.8), rgba(30, 64, 175, 0.8)), 
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%233b82f6" width="1200" height="600"/><path fill="%231e3a8a" opacity="0.3" d="M0,300 Q300,150 600,300 T1200,300 L1200,600 L0,600 Z"/></svg>');
    background-size: cover;
    background-position: center;
    min-height: 450px;
    display: flex;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero-overlay {
    width: 100%;
}

.hero-content h2 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    color: var(--white);
    font-size: 1.4rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.1rem;
}

.btn-download {
    padding: 0.5rem 1.5rem;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
}

.btn-download:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

/* ===================================
   WELCOME SECTION
   =================================== */
.welcome {
    padding: 4rem 0;
    background: var(--white);
}

.welcome-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.welcome-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.welcome-content .lead {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.welcome-content p {
    font-style: italic;
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 1.5rem;
}

/* ===================================
   SECTION STYLES
   =================================== */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about-section {
    padding: 5rem 0;
    background: var(--light-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.about-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

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

.about-card .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.about-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ===================================
   SCHEDULES SECTION
   =================================== */
.schedules-section {
    padding: 5rem 0;
    background: var(--white);
}

.schedules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.schedule-card {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 2rem;
    border-radius: 15px;
    border-left: 5px solid var(--secondary-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.schedule-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--accent-color);
}

.schedule-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.schedule-card .age {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.schedule-details {
    list-style: none;
}

.schedule-details li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--text-dark);
}

.schedule-details li:last-child {
    border-bottom: none;
}

.schedule-details strong {
    color: var(--primary-color);
}

/* ===================================
   DOWNLOADS SECTION - MUY IMPORTANTE
   =================================== */
.downloads-section {
    padding: 5rem 0;
    background: linear-gradient(to bottom, #f0f9ff, var(--white));
}

.downloads-grid {
    display: grid;
    gap: 3rem;
    margin-top: 3rem;
}

.download-category {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.category-title {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--secondary-color);
}

.download-items {
    display: grid;
    gap: 1rem;
}

.download-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: 10px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.download-item:hover {
    background: #e0f2fe;
    border-color: var(--secondary-color);
    transform: translateX(5px);
}

.download-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.download-info h4 {
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
    color: var(--primary-color);
}

.download-info p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.file-info {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--text-light);
    background: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-weight: 600;
}

.downloads-note {
    background: #fef3c7;
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 3rem;
}

.downloads-note p {
    color: #92400e;
    margin: 0;
}

/* ===================================
   REGISTRATION FORM
   =================================== */
.registration-section {
    padding: 5rem 0;
    background: var(--light-bg);
}

.registration-form {
    max-width: 800px;
    margin: 3rem auto;
    background: var(--white);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

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

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Open Sans', sans-serif;
    transition: border-color 0.3s ease;
}

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

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin: 2rem 0;
}

.form-checkbox input[type="checkbox"] {
    margin-top: 0.3rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-checkbox label {
    color: var(--text-dark);
    line-height: 1.5;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact-section {
    padding: 5rem 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-card {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
}

.contact-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-card p {
    color: var(--text-dark);
    margin: 0.5rem 0;
}

.contact-card .small {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

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

.footer-section ul li {
    margin: 0.5rem 0;
}

.footer-section a {
    color: var(--white);
    opacity: 0.9;
}

.footer-section a:hover {
    opacity: 1;
    text-decoration: underline;
}

.social-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-link {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 0.9rem;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.8;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

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

    .download-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .registration-form {
        padding: 2rem 1.5rem;
    }

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

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 1.8rem;
    }

    .logo h1 {
        font-size: 1.4rem;
    }

    .download-icon {
        width: 50px;
        height: 50px;
        font-size: 2rem;
    }
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.download-item,
.about-card,
.schedule-card {
    animation: fadeIn 0.6s ease-out;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }