/* ============================================
   BLOG MODERNIZATION 2025
   Estudio Jurídico Giusta
   ============================================ */

/* ============================================
   1. VARIABLES CSS - SISTEMA DE DISEÑO
   ============================================ */
:root {
    /* Colores Primarios - Jurídico */
    --primary-blue: #16345c;
    --primary-light: #2d4a73;
    --primary-dark: #0d1f36;
    
    /* Colores Secundarios - Acentos */
    --gold-accent: #F7B8C7;
    --gold-light: #F9C7D3;
    --gold-dark: #F5A9B9;
    
    /* Neutros - Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-dark: #212529;
    
    /* Textos */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --text-white: #ffffff;
    
    /* Estados */
    --success: #28a745;
    --warning: #F7B8C7;
    --danger: #dc3545;
    --info: #17a2b8;
    
    /* Sombras */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
    
    /* Bordes */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Tipografía */
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Merriweather', Georgia, serif;
    --font-mono: 'Monaco', 'Courier New', monospace;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
}

/* ============================================
   2. RESET Y BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   3. BLOG CONTAINER
   ============================================ */
.blog-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

/* ============================================
   4. HEADER DEL BLOG
   ============================================ */
.blog-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
}

.blog-header::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--gold-accent));
    margin: var(--spacing-lg) auto 0;
    border-radius: var(--radius-full);
}

.blog-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

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

/* ============================================
   5. BÚSQUEDA Y FILTROS
   ============================================ */
.blog-controls {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 280px;
    max-width: 500px;
}

.search-box input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-base);
    font-family: var(--font-sans);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(22, 52, 92, 0.1);
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.filter-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-tag {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

.filter-tag:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.filter-tag.active {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
}

/* ============================================
   6. GRID DE POSTS
   ============================================ */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

/* ============================================
   7. CARD DE POST
   ============================================ */
.post-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--bg-tertiary);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.post-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.post-card-image {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.post-card-category {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gold-accent);
    color: white;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.post-card-author {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: white;
    font-size: var(--text-sm);
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
}

.post-card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.post-card-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.post-card-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-excerpt {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.post-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--bg-tertiary);
}

.post-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-blue);
    font-weight: 600;
    font-size: var(--text-sm);
    text-decoration: none;
    transition: all var(--transition-base);
}

.post-card-link:hover {
    color: var(--gold-accent);
    gap: var(--spacing-md);
}

.post-card-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.post-action-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.post-action-btn:hover {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.post-action-btn.delete:hover {
    background: var(--danger);
    border-color: var(--danger);
}

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

.post-card {
    animation: fadeInUp 0.5s ease forwards;
    opacity: 0;
}

.post-card:nth-child(1) { animation-delay: 0.1s; }
.post-card:nth-child(2) { animation-delay: 0.2s; }
.post-card:nth-child(3) { animation-delay: 0.3s; }
.post-card:nth-child(4) { animation-delay: 0.4s; }
.post-card:nth-child(5) { animation-delay: 0.5s; }
.post-card:nth-child(6) { animation-delay: 0.6s; }

/* ============================================
   9. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .blog-container {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .filter-tags {
        justify-content: center;
    }
    
    .blog-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .post-card-title {
        font-size: var(--text-lg);
    }
    
    .post-card-excerpt {
        font-size: var(--text-sm);
    }
}

/* ============================================
   10. EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    font-size: var(--text-base);
    color: var(--text-muted);
}