/* Variables CSS para mantener un tema consistente */
:root {
    --primary-color: #4285f4;
    --primary-hover: #357ae8;
    --secondary-color: #34a853;
    --danger-color: #ea4335;
    --warning-color: #fbbc04;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --border-color: #dadce0;
    --shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-hover: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --border-radius: 8px;
}

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

body {
    font-family: 'Google Sans', 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

/* Cabecera */
.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #6c5ce7 100%);
    color: white;
    border-radius: var(--border-radius);
    margin-bottom: 40px;
    box-shadow: var(--shadow);
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 500;
}

/* Enlace para volver a categorías en el header */
.header-back-link {
    color: white;
    text-decoration: none;
    font-size: 0.9em;
    opacity: 0.9;
    display: inline-block;
    margin-bottom: 10px;
    transition: opacity 0.3s ease;
}

.header-back-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.header .subtitle {
    font-size: 1.2em;
    opacity: 0.95;
}

/* Grid de categorías */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

/* Tarjeta de categoría */
.category-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
    border: 2px solid transparent;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.category-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.category-icon {
    font-size: 3em;
    margin-bottom: 15px;
    display: block;
}

.category-card h2 {
    font-size: 1.8em;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 500;
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
}

.category-info {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 500;
    background: var(--bg-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.badge-coming {
    background: var(--warning-color);
    color: white;
    border: none;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1em;
    margin-top: 10px;
}

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

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

.btn-secondary {
    background: var(--bg-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* Footer */
.footer {
    text-align: center;
    padding: 50px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #6c5ce7 100%);
    color: white;
    border-radius: var(--border-radius);
    margin-top: 50px;
    box-shadow: var(--shadow);
}

.footer > p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1em;
    margin-bottom: 0;
    font-style: italic;
}

/* Footer con redes sociales */
.footer-social {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid rgba(255, 255, 255, 0.2);
}

.footer-social h3 {
    font-size: 1.3em;
    margin-bottom: 25px;
    color: white;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.footer-social-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
}

.footer-social-links a {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-size: 0.95em;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.footer-social-links a:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    text-decoration: none;
    border-color: rgba(255, 255, 255, 0.5);
}

.footer-social-links a[href*="github"]::before {
    content: '💻';
    font-size: 1.3em;
    line-height: 1;
}

.footer-social-links a[href*="linkedin"]::before {
    content: '💼';
    font-size: 1.3em;
    line-height: 1;
}

.footer-social-links a[href^="mailto"]::before {
    content: '✉️';
    font-size: 1.3em;
    line-height: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2em;
    }

    .categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .category-card {
        padding: 20px;
    }

    .footer {
        padding: 35px 15px;
    }
    
    .footer-social h3 {
        font-size: 1.1em;
    }
    
    .footer-social-links {
        gap: 10px;
    }
    
    .footer-social-links a {
        padding: 10px 16px;
        font-size: 0.85em;
    }
}