/* Layout y estilos específicos de la página pública /actualizaciones.
   Reutiliza variables y paleta de styles.css (dark cyber con accent lime). */

* { box-sizing: border-box; }

body.upd-body-active,
.upd-page {
    background: var(--bg-void);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    margin: 0;
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ==================== HEADER ==================== */

.upd-header {
    background: rgba(8, 8, 8, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 10;
}

.upd-header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 16px;
}

.upd-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: inherit;
}

.upd-logo img {
    border-radius: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
}

.upd-logo-title {
    font-size: 1.15rem;
    color: var(--text-bright);
    line-height: 1.1;
}

.upd-logo-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ==================== HERO ==================== */

.upd-main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

.upd-hero {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-subtle);
}

.upd-hero-title {
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    margin: 0 0 8px;
    color: var(--text-bright);
    letter-spacing: -0.02em;
}

.upd-hero-sub {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0;
}

/* ==================== FILTROS ==================== */

.upd-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.upd-chip {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-soft);
    padding: 7px 14px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}

.upd-chip:hover {
    border-color: var(--accent-lime);
    color: var(--text-primary);
}

.upd-chip.active {
    background: var(--accent-lime-dim);
    border-color: var(--accent-lime);
    color: var(--accent-lime);
}

/* ==================== GRID DE POSTS ==================== */

.upd-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.upd-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 22px;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.upd-card:hover {
    border-color: var(--border-focus);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.upd-card-featured {
    border-color: var(--accent-lime-soft);
    background: linear-gradient(180deg, var(--accent-lime-dim) 0%, var(--bg-card) 30%);
}

.upd-card-featured::before {
    content: "📌 Destacado";
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--accent-lime);
    color: var(--bg-void);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: 999px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.upd-card-meta {
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.upd-cat-badge {
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.74rem;
}

.upd-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-bright);
    margin: 0;
    line-height: 1.3;
}

.upd-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.upd-card-date {
    color: var(--text-muted);
    font-size: 0.78rem;
    margin-top: auto;
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
}

/* ==================== ESTADO VACÍO ==================== */

.upd-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.upd-empty-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.7;
}

.upd-empty h2 {
    color: var(--text-primary);
    margin: 0 0 8px;
}

/* ==================== VISTA DETALLE ==================== */

.upd-back {
    display: inline-block;
    margin-bottom: 24px;
    color: var(--accent-lime);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 0;
}

.upd-back:hover {
    text-decoration: underline;
}

.upd-detail {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 40px;
    max-width: 820px;
}

.upd-detail-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.upd-detail h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    color: var(--text-bright);
    margin: 0 0 24px;
    line-height: 1.2;
}

/* Markdown render dentro del detalle */
.upd-detail-body {
    color: var(--text-primary);
    font-size: 1.02rem;
    line-height: 1.75;
}

.upd-detail-body h1,
.upd-detail-body h2,
.upd-detail-body h3 {
    color: var(--text-bright);
    margin-top: 1.8em;
    margin-bottom: 0.6em;
    line-height: 1.3;
}

.upd-detail-body h1 { font-size: 1.6rem; }
.upd-detail-body h2 { font-size: 1.35rem; padding-bottom: 0.3em; border-bottom: 1px solid var(--border-subtle); }
.upd-detail-body h3 { font-size: 1.15rem; }

.upd-detail-body p {
    margin: 0 0 1em;
}

.upd-detail-body a {
    color: var(--accent-lime);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-lime-soft);
}

.upd-detail-body a:hover {
    border-bottom-color: var(--accent-lime);
}

.upd-detail-body code {
    background: var(--bg-deep);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    padding: 1px 6px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 0.88em;
    color: var(--accent-lime);
}

.upd-detail-body pre {
    background: var(--bg-deep);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    font-size: 0.88rem;
    line-height: 1.5;
}

.upd-detail-body pre code {
    background: transparent;
    border: 0;
    padding: 0;
    color: var(--text-primary);
}

.upd-detail-body ul,
.upd-detail-body ol {
    padding-left: 1.4em;
    margin: 0 0 1em;
}

.upd-detail-body blockquote {
    border-left: 3px solid var(--accent-lime);
    padding-left: 16px;
    margin: 0 0 1em;
    color: var(--text-secondary);
}

.upd-detail-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
}

.upd-detail-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 1em;
}

.upd-detail-body th,
.upd-detail-body td {
    padding: 8px 12px;
    border: 1px solid var(--border-subtle);
    text-align: left;
}

.upd-detail-body th {
    background: var(--bg-deep);
    font-weight: 600;
}

.upd-detail-body hr {
    border: none;
    border-top: 1px solid var(--border-subtle);
    margin: 2em 0;
}

/* ==================== FOOTER ==================== */

.upd-footer {
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-deep);
    padding: 24px;
    margin-top: 60px;
}

.upd-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: var(--text-muted);
    text-align: center;
}

/* ==================== LOADING + ERROR ==================== */

.upd-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    grid-column: 1 / -1;
}

.upd-error {
    text-align: center;
    padding: 40px 20px;
    color: #ef4444;
    grid-column: 1 / -1;
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 640px) {
    .upd-header-inner {
        padding: 12px 16px;
    }
    .upd-main {
        padding: 24px 16px 60px;
    }
    .upd-grid {
        grid-template-columns: 1fr;
    }
    .upd-detail {
        padding: 24px 20px;
    }
    .upd-footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

/* Util */
.hidden { display: none !important; }

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
}