/* ==========================================================================
Variables y Configuración Global
========================================================================== */
:root {
    --primary: #0f4c81;
    --primary-hover: #0a355c;
    --primary-light: #eef5fc;
    --accent: #2563eb;
    --accent-gradient: linear-gradient(135deg, #0f4c81 0%, #2563eb 100%);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-card: #ffffff;
    --bg-section: #f8fafc;
    --border-color: #e2e8f0;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 25px -5px rgba(15, 76, 129, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 20px 30px -10px rgba(15, 76, 129, 0.18), 0 10px 15px -5px rgba(0, 0, 0, 0.08);

    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-pill: 9999px;
    --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
Contenedor Principal
========================================================================== */
.publicaciones-arn {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 40px 24px 60px 24px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    box-sizing: border-box;
}

/* Header de la sección */
.publicaciones-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 36px auto;
}

.publicaciones-header .badge-top {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background-color: var(--primary-light);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-pill);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 12px;
}

.publicaciones-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-main);
    margin: 0 0 12px 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.publicaciones-header h2 span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.publicaciones-header p {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ==========================================================================
Controles: Buscador y Categorías
========================================================================== */
.controls-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: center;
    margin-bottom: 40px;
}

.search-box {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.search-box input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-pill);
    font-size: 0.95rem;
    outline: none;
    background-color: #ffffff;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
    box-sizing: border-box;
}

.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(15, 76, 129, 0.12);
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* Filtros combinados (Categorías + Año) */
.filters-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-btn {
    border: 1px solid var(--border-color);
    background: #ffffff;
    color: var(--text-muted);
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.filter-btn.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(15, 76, 129, 0.25);
}

/* Selector de Año Estilizado */
.year-select {
    padding: 8px 36px 8px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    font-family: 'Inter', sans-serif;
    color: var(--text-muted);
    background-color: #ffffff;
    outline: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20width%3D%2212%22%20height%3D%2212%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M6%209l6%206%206-6%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.year-select:hover,
.year-select:focus {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(15, 76, 129, 0.10);
}

/* ==========================================================================
Grid de Publicaciones
========================================================================== */
.publicaciones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

/* ==========================================================================
Tarjeta Individual
========================================================================== */
.card-item {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
    position: relative;
    opacity: 1;
    transform: translateY(0);
}

.card-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(15, 76, 129, 0.2);
}

/* Header / Imagen de la tarjeta */
.card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1; /* Proporción cuadrada 600px x 600px */
    overflow: hidden;
    background-color: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-media img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Muestra la imagen completa sin cortar bordes ni texto */
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-item:hover .card-media img {
    transform: scale(1.06);
}

.card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Cuerpo de la tarjeta */
.card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 10px 0;
    color: var(--text-main);
    transition: var(--transition-fast);
}

.card-item:hover .card-title {
    color: var(--primary);
}

.card-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0 0 20px 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

/* Botón CTA dentro de la tarjeta */
.card-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid #f1f5f9;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition-fast);
}

.cta-btn svg {
    transition: transform 0.3s ease;
}

.card-item:hover .cta-btn svg {
    transform: translateX(5px);
}

/* State No Results */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.no-results svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    color: #cbd5e1;
}

/* ==========================================================================
Responsive Breakpoints
========================================================================== */
@media screen and (max-width: 768px) {
    .publicaciones-arn {
        padding: 24px 16px;
    }

    .publicaciones-header h2 {
        font-size: 1.75rem;
    }

    .filters-container {
        flex-direction: column;
    }

    .publicaciones-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }
}