/* ═══════════════════════════════════════════════════════════════════════════
   BENED Commons – Stylesheet
   Integrated into the main BENED site. Uses main site CSS vars where possible,
   defines its own scoped vars for commons-specific theming.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Commons-scoped variables (blend with main site --bg, --section, etc.) ── */
.commons-page {
    --commons-surface: var(--section, #0b1724);
    --commons-surface-hover: #122237;
    --commons-border: rgba(255,255,255,0.06);
    --commons-text: var(--text, #f9fafb);
    --commons-muted: var(--muted, #9ca3af);
    --commons-primary: var(--teal, #027578);
    --commons-primary-glow: rgba(2, 117, 120, 0.15);
    --commons-accent: #facc15;
    --commons-success: #34d399;
    --commons-danger: #f87171;
    --commons-subscription: #a78bfa;
    --commons-radius: 12px;
    --commons-radius-sm: 8px;
    --commons-shadow: 0 4px 24px rgba(0,0,0,0.4);
    --commons-transition: 0.2s ease;
}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.commons-hero {
    padding: 64px 0 40px;
    text-align: center;
    background: linear-gradient(180deg, rgba(2,117,120,0.08) 0%, transparent 100%);
}

.commons-hero-title {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--commons-text) 0%, var(--commons-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.commons-hero-tagline {
    font-size: 18px;
    color: var(--commons-muted);
    margin-bottom: 36px;
}

/* ── Filter Bar ─────────────────────────────────────────────────────────── */
.commons-filter-bar {
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 800px;
    margin: 0 auto;
}

.commons-search-box {
    position: relative;
    flex: 1;
    min-width: 240px;
}

.commons-search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--commons-muted);
    font-size: 14px;
}

.commons-search-box input {
    width: 100%;
    padding: 12px 16px 12px 40px;
    background: var(--commons-surface);
    border: 1px solid var(--commons-border);
    border-radius: var(--commons-radius);
    color: var(--commons-text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color var(--commons-transition);
}

.commons-search-box input:focus {
    border-color: var(--commons-primary);
    box-shadow: 0 0 0 3px var(--commons-primary-glow);
}

.commons-filter-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.commons-filter-group select {
    padding: 12px 16px;
    background: var(--commons-surface);
    border: 1px solid var(--commons-border);
    border-radius: var(--commons-radius);
    color: var(--commons-text);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    outline: none;
    appearance: none;
    min-width: 140px;
}

.commons-filter-group select:focus {
    border-color: var(--commons-primary);
}

/* ── Stats Bar ──────────────────────────────────────────────────────────── */
.commons-stats-bar {
    padding: 20px 0;
    border-bottom: 1px solid var(--commons-border);
}

.commons-stats-inner {
    display: flex;
    justify-content: center;
    gap: 48px;
}

.commons-stat {
    text-align: center;
}

.commons-stat-number {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--commons-primary);
}

.commons-stat-label {
    font-size: 12px;
    color: var(--commons-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ── Section Titles ─────────────────────────────────────────────────────── */
.commons-section-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--commons-border);
    color: var(--commons-text);
}

.commons-section-title i {
    color: var(--commons-accent);
    margin-right: 8px;
}

.commons-featured-section,
.commons-listings-section {
    padding: 48px 0;
}

/* ── Card Grid ──────────────────────────────────────────────────────────── */
.commons-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

/* ── Course Card ────────────────────────────────────────────────────────── */
.commons-course-card {
    display: block;
    background: var(--commons-surface);
    border: 1px solid var(--commons-border);
    border-radius: var(--commons-radius);
    overflow: hidden;
    transition: transform var(--commons-transition), box-shadow var(--commons-transition), border-color var(--commons-transition);
    cursor: pointer;
    position: relative;
    text-decoration: none;
    color: inherit;
}

.commons-course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--commons-shadow);
    border-color: var(--commons-primary);
}

.commons-card-image {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    background: linear-gradient(135deg, #0b1724, #0f2035);
}

.commons-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.commons-card-image .commons-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--commons-muted);
    font-size: 48px;
}

/* Badges */
.commons-card-badges {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.commons-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.commons-badge-featured {
    background: var(--commons-accent);
    color: #000;
}

.commons-badge-free {
    background: var(--commons-success);
    color: #000;
}

.commons-badge-paid {
    background: var(--commons-primary);
    color: white;
}

.commons-badge-subscription {
    background: var(--commons-subscription);
    color: white;
}

.commons-badge-stripe {
    background: #635bff;
    color: white;
}

/* Card Body */
.commons-card-body {
    padding: 20px;
}

.commons-card-category {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--commons-primary);
    font-weight: 600;
    margin-bottom: 6px;
}

.commons-card-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.3;
    color: var(--commons-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.commons-card-tagline {
    font-size: 13px;
    color: var(--commons-muted);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.commons-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--commons-border);
    font-size: 12px;
    color: var(--commons-muted);
}

.commons-card-creator {
    display: flex;
    align-items: center;
    gap: 6px;
}

.commons-card-creator i {
    color: var(--commons-primary);
}

.commons-card-price {
    font-weight: 700;
    font-size: 14px;
    color: var(--commons-success);
}

.commons-card-price.paid {
    color: var(--commons-primary);
}

.commons-card-price.subscription {
    color: var(--commons-subscription);
}

.commons-card-stats {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    font-size: 11px;
    color: var(--commons-muted);
}

.commons-card-stats i {
    margin-right: 3px;
}

/* Subscription Tier Chips */
.commons-card-tiers {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.commons-tier-chip {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    background: rgba(167, 139, 250, 0.12);
    border: 1px solid rgba(167, 139, 250, 0.25);
    border-radius: 20px;
    font-size: 11px;
    color: var(--commons-subscription);
    font-weight: 500;
    letter-spacing: 0.3px;
}

/* ── No Results ─────────────────────────────────────────────────────────── */
.commons-no-results {
    text-align: center;
    padding: 64px 0;
    color: var(--commons-muted);
}

.commons-no-results i {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
    opacity: 0.3;
}

.commons-no-results p {
    font-size: 16px;
}

/* ── Empty State ────────────────────────────────────────────────────────── */
.commons-empty-state {
    text-align: center;
    padding: 80px 0;
    color: var(--commons-muted);
}

.commons-empty-state i {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
    opacity: 0.2;
    color: var(--commons-primary);
}

.commons-empty-state h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--commons-text);
    margin-bottom: 8px;
}

.commons-empty-state p {
    font-size: 16px;
    max-width: 420px;
    margin: 0 auto;
}

/* ── CTA Section ────────────────────────────────────────────────────────── */
.commons-cta-section {
    padding: 48px 0 64px;
}

.commons-cta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.commons-cta-box {
    text-align: center;
    padding: 48px;
    border: 2px dashed var(--commons-border);
    border-radius: var(--commons-radius);
    background: var(--commons-surface);
}

.commons-cta-icon {
    font-size: 40px;
    margin-bottom: 16px;
    color: var(--commons-primary);
}

.commons-cta-box h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--commons-text);
}

.commons-cta-box p {
    color: var(--commons-muted);
    margin-bottom: 24px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.commons-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--commons-radius-sm);
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--commons-transition);
    border: none;
}

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

.commons-btn-primary:hover {
    filter: brightness(1.15);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--commons-primary-glow);
}

.commons-btn-secondary {
    background: transparent;
    color: var(--commons-primary);
    border: 2px solid var(--commons-primary);
}

.commons-btn-secondary:hover {
    background: var(--commons-primary);
    color: white;
    transform: translateY(-1px);
}

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .commons-hero-title {
        font-size: 28px;
    }

    .commons-filter-bar {
        flex-direction: column;
    }

    .commons-search-box {
        min-width: 100%;
    }

    .commons-filter-group {
        width: 100%;
        justify-content: center;
    }

    .commons-filter-group select {
        min-width: 100%;
    }

    .commons-stats-inner {
        gap: 24px;
    }

    .commons-card-grid {
        grid-template-columns: 1fr;
    }

    .commons-cta-grid {
        grid-template-columns: 1fr;
    }

    .commons-cta-box {
        padding: 32px 20px;
    }
}

@media (max-width: 480px) {
    .commons-stats-inner {
        flex-wrap: wrap;
        gap: 16px;
    }

    .commons-stat {
        flex: 1;
        min-width: 80px;
    }
}

/* ── Loading shimmer ────────────────────────────────────────────────────── */
.commons-loading-card {
    background: var(--commons-surface);
    border: 1px solid var(--commons-border);
    border-radius: var(--commons-radius);
    overflow: hidden;
}

.commons-shimmer {
    background: linear-gradient(90deg,
        var(--commons-surface) 25%,
        var(--commons-surface-hover) 50%,
        var(--commons-surface) 75%);
    background-size: 200% 100%;
    animation: commons-shimmer 1.5s ease-in-out infinite;
}

.commons-shimmer-image {
    width: 100%;
    height: 180px;
}

.commons-shimmer-line {
    height: 16px;
    border-radius: 4px;
    margin: 12px 20px;
}

.commons-shimmer-line.short {
    width: 60%;
}

@keyframes commons-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}