/* ============================================
   CSS para Artículos - Estilo Portfolio Glassmorphism
============================================ */

:root {
    /* Paleta de lujo oscura */
    --dark-bg: #0a0a0f;
    --midnight: #141420;
    --deep-purple: #1a1a2e;
    --royal-blue: #16213e;
    --accent-gold: #d4af37;
    --accent-silver: #c0c0c0;
    --accent-platinum: #e5e4e2;
    
    /* Glass effect variables */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-strong: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glass-blur: blur(20px);
    --glass-blur-strong: blur(40px);
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Space Mono', monospace;
    
    /* Transitions */
    --transition-elegant: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-quick: all 0.2s ease-out;
}

/* ============================================
   Reset y Base
============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--midnight) 50%, var(--deep-purple) 100%);
    color: var(--accent-platinum);
    overflow-x: hidden;
    min-height: 100vh;
    line-height: 1.6;
}

/* Fondo animado */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(22, 33, 62, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(192, 192, 192, 0.05) 0%, transparent 50%);
    z-index: -2;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { 
        transform: scale(1) rotate(0deg); 
    }
    50% { 
        transform: scale(1.1) rotate(1deg); 
    }
}

/* ============================================
   Hero Section del Artículo
============================================ */

.article-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--midnight) 50%, var(--deep-purple) 100%);
}

.article-hero .hero-content {
    text-align: center;
    max-width: 800px;
    animation: slideInFromLeft 1s ease-out;
}

.article-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    border-radius: 3rem;
    margin-bottom: 2rem;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent-gold);
}

.article-hero .hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--accent-platinum) 0%, var(--accent-silver) 50%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.article-hero .hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--accent-silver);
    margin-bottom: 2rem;
    letter-spacing: 1px;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.article-date,
.reading-time {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    color: var(--accent-silver);
    font-weight: 500;
}

.article-date i,
.reading-time i {
    color: var(--accent-gold);
}

/* ============================================
   Contenido del Artículo
============================================ */

.article-content {
    padding: 4rem 2rem 6rem;
}

.article {
    max-width: 900px;
    margin: 0 auto;
}

.article-intro {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
    border-radius: 3rem;
    padding: 3rem;
    margin-bottom: 4rem;
    position: relative;
    box-shadow: var(--glass-shadow);
}

.article-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--accent-platinum);
    text-align: justify;
    opacity: 0.95;
    position: relative;
    padding-left: 3rem;
}

.article-intro p::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--accent-gold), var(--accent-silver));
    border-radius: 2px;
}

/* Secciones del artículo */
.article-section {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
    border-radius: 2.5rem;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--glass-shadow);
    transition: var(--transition-elegant);
}

.article-section:hover {
    transform: translateY(-5px);
    background: var(--glass-bg-strong);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.article-section h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--accent-platinum);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

.article-section h2::before {
    content: '';
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-gold), var(--accent-silver));
    border-radius: 2px;
}

.article-section h2 i {
    color: var(--accent-gold);
    font-size: 0.9em;
}

.article-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--accent-platinum);
    margin-bottom: 1.5rem;
    text-align: justify;
    opacity: 0.95;
}

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

/* ============================================
   Navegación del Artículo
============================================ */

.article-navigation {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 2rem;
    margin: 4rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--glass-shadow);
}

.nav-btn {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b8860b 100%);
    color: var(--dark-bg);
    padding: 1rem 2rem;
    border-radius: 2rem;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-elegant);
}

.nav-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.3);
}

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

.article-share span {
    color: var(--accent-silver);
    font-weight: 500;
}

.share-btn {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-silver);
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.share-btn:hover {
    background: var(--accent-gold);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

.copy-link-btn {
    border: 1px solid var(--glass-border);
    font-family: inherit;
}

/* ============================================
   Artículos Relacionados
============================================ */

.related-articles {
    margin-top: 6rem;
}

.related-articles h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent-platinum);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.related-articles h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.related-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 2.5rem;
    transition: var(--transition-elegant);
    box-shadow: var(--glass-shadow);
}

.related-card:hover {
    transform: translateY(-10px);
    background: var(--glass-bg-strong);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
}

.related-category {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2) 0%, transparent);
    color: var(--accent-gold);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid rgba(212, 175, 55, 0.3);
    display: inline-block;
    margin-bottom: 1rem;
}

.related-card h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent-platinum);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.related-card p {
    color: var(--accent-silver);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.related-link {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
    font-size: 0.9rem;
}

.related-link:hover {
    color: var(--accent-platinum);
    transform: translateX(5px);
}

.related-link.disabled {
    color: var(--accent-silver);
    opacity: 0.5;
    cursor: not-allowed;
}

.related-link.disabled:hover {
    transform: none;
    color: var(--accent-silver);
}

/* ============================================
   Responsive Design
============================================ */

@media (max-width: 768px) {
    .article-hero {
        padding: 6rem 1rem 3rem;
        min-height: 50vh;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .article-content {
        padding: 3rem 1rem 4rem;
    }
    
    .article-intro,
    .article-section {
        padding: 2rem;
        border-radius: 2rem;
    }
    
    .article-intro p {
        font-size: 1.1rem;
        padding-left: 1.5rem;
    }
    
    .article-section h2 {
        font-size: 1.5rem;
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .article-section h2::before {
        width: 50px;
        height: 3px;
        align-self: center;
    }
    
    .article-section p {
        font-size: 1rem;
        text-align: left;
    }
    
    .article-navigation {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .article-share {
        flex-direction: column;
        gap: 1rem;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .related-card {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .article-hero {
        padding: 5rem 0.5rem 2rem;
    }
    
    .article-hero .hero-title {
        font-size: 2rem;
    }
    
    .article-content {
        padding: 2rem 0.5rem 3rem;
    }
    
    .article-intro,
    .article-section {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .article-section h2 {
        font-size: 1.3rem;
    }
    
    .article-section p {
        font-size: 0.95rem;
        line-height: 1.7;
    }
    
    .nav-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .related-card {
        padding: 1.5rem;
    }
    
    .related-card h4 {
        font-size: 1.2rem;
    }
}

/* ============================================
   Animaciones y Efectos Especiales
============================================ */

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.article-section {
    animation: fadeInUp 0.8s ease-out forwards;
}

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

::selection {
    background: rgba(212, 175, 55, 0.3);
    color: var(--accent-platinum);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--accent-gold), var(--accent-silver));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--accent-silver), var(--accent-gold));
}

/* ============================================
   Footer
============================================ */

.footer {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    padding: 4rem 2rem 2rem;
    margin-top: 6rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.footer-section h4 {
    color: var(--accent-gold);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--accent-silver);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--accent-gold);
    transform: translateX(5px);
}

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

.social-link {
    width: 45px;
    height: 45px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-silver);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.social-link:hover {
    background: var(--accent-gold);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--accent-silver);
    opacity: 0.7;
}

@media (max-width: 768px) {
    .footer {
        padding: 3rem 1rem 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }
}