/* =============================================================
   catalog.css — AstroTube Showcase Catalog (Frontend)
   Galactic Federation design tokens with theme-agnostic fallbacks
   ============================================================= */

/* ── CSS Custom Properties (GF tokens + fallbacks) ──────────── */
:root {
    --atc-bg: var(--gf-color-bg-primary, #01021b);
    --atc-bg-elevated: var(--gf-color-bg-secondary, #0a0c2e);
    --atc-surface: var(--gf-color-surface, rgba(16, 20, 54, 0.72));
    --atc-surface-strong: var(--gf-color-surface-strong, rgba(10, 12, 46, 0.88));
    --atc-gold: var(--gf-color-accent-gold, #ffd166);
    --atc-blue: var(--gf-color-accent-blue, #008ed8);
    --atc-glow: var(--gf-color-accent-glow, #7dd3fc);
    --atc-silver: var(--gf-color-accent-silver, #c7d0e0);
    --atc-text: var(--gf-color-text-primary, #f4f7fb);
    --atc-text-muted: var(--gf-color-text-muted, #8f9bb3);
    --atc-border: var(--gf-color-border, rgba(255, 209, 102, 0.16));
    --atc-radius: var(--gf-radius-glass, 24px);
    --atc-radius-sm: var(--gf-radius-glass-sm, 16px);
    --atc-font-heading: var(--font-heading, 'Cinzel', serif);
    --atc-font-body: var(--font-body, 'Inter', sans-serif);
    --atc-font-mono: var(--font-mono, 'Share Tech Mono', monospace);
}

/* ── Page Container ─────────────────────────────────────────── */
.atc-page {
    position: relative;
    overflow: hidden;
}

/* ── Hero Section ────────────────────────────────────────────── */
.atc-hero {
    position: relative;
    width: 100%;
    min-height: 760px;
    padding: 110px 24px 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-image: var(--atc-hero-bg);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    isolation: isolate;
}

/* Dark overlay for readability with gradient fade at bottom */
.atc-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -2;
    background:
        linear-gradient(
            180deg,
            rgba(1, 2, 27, 0.58) 0%,
            rgba(1, 2, 27, 0.38) 38%,
            rgba(1, 2, 27, 0.72) 72%,
            rgba(1, 2, 27, 0.96) 100%
        ),
        radial-gradient(
            circle at 50% 28%,
            rgba(0, 142, 216, 0.16),
            transparent 42%
        );
    pointer-events: none;
}

/* Secondary vignette overlay for depth */
.atc-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(
            circle at 50% 45%,
            rgba(1, 2, 27, 0.12) 0%,
            rgba(1, 2, 27, 0.42) 55%,
            rgba(1, 2, 27, 0.82) 100%
        );
    pointer-events: none;
}

.atc-hero__overlay {
    display: none;
}

.atc-hero__content,
.atc-coverflow {
    position: relative;
    z-index: 2;
}

.atc-hero__content {
    text-align: center;
    padding: 80px 20px 40px;
    max-width: 800px;
}

.atc-hero__eyebrow {
    display: inline-block;
    font-family: var(--atc-font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--atc-blue);
    margin-bottom: 16px;
}

.atc-hero__title {
    font-family: var(--atc-font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--atc-gold);
    margin-bottom: 16px;
    text-shadow:
        0 4px 28px rgba(0, 0, 0, 0.75),
        0 0 24px rgba(255, 209, 102, 0.16);
}

.atc-hero__subtitle {
    font-family: var(--atc-font-body);
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--atc-silver);
    line-height: 1.6;
    margin-bottom: 32px;
    text-shadow: 0 3px 18px rgba(0, 0, 0, 0.85);
}

.atc-hero__stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.atc-hero__stat {
    text-align: center;
    font-family: var(--atc-font-mono);
    font-size: 0.8rem;
    color: var(--atc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.atc-hero__stat-number {
    display: block;
    font-family: var(--atc-font-heading);
    font-size: 1.8rem;
    color: var(--atc-gold);
    margin-bottom: 4px;
}

.atc-hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* ── Coverflow Carousel ─────────────────────────────────────── */
.atc-coverflow {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 60px;
    z-index: 2;
    background: transparent;
}

.atc-coverflow__viewport {
    overflow: hidden;
    width: 100%;
}

.atc-coverflow__track {
    display: flex;
    gap: 16px;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    scroll-snap-type: x mandatory;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding: 20px 0;
}

.atc-coverflow__track::-webkit-scrollbar {
    display: none;
}

.atc-coverflow__slide {
    flex: 0 0 calc(33.333% - 12px);
    min-width: 200px;
    scroll-snap-align: center;
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0.6;
    transform: scale(0.9);
}

.atc-coverflow__slide--active {
    opacity: 1;
    transform: scale(1);
}

.atc-coverflow__play {
    position: relative;
    display: block;
    width: 100%;
    border: 2px solid var(--atc-border);
    border-radius: var(--atc-radius-sm);
    overflow: hidden;
    background: var(--atc-surface);
    cursor: pointer;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    padding: 0;
    text-align: left;
}

.atc-coverflow__play:hover,
.atc-coverflow__play:focus-visible {
    border-color: var(--atc-gold);
    box-shadow: 0 0 30px rgba(255, 209, 102, 0.2);
    outline: none;
}

.atc-coverflow__img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

.atc-coverflow__play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(0, 142, 216, 0.85);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.atc-coverflow__play:hover .atc-coverflow__play-icon,
.atc-coverflow__play:focus-visible .atc-coverflow__play-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.atc-coverflow__title {
    display: block;
    padding: 8px 12px;
    font-family: var(--atc-font-body);
    font-size: 0.85rem;
    color: var(--atc-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.atc-coverflow__btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border: 1px solid var(--atc-border);
    border-radius: 50%;
    background: var(--atc-surface-strong);
    color: var(--atc-silver);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, color 0.3s ease;
    z-index: 3;
}

.atc-coverflow__btn:hover {
    background: var(--atc-gold);
    color: var(--atc-bg);
}

.atc-coverflow__btn--prev {
    left: 8px;
}

.atc-coverflow__btn--next {
    right: 8px;
}

.atc-coverflow__status {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

/* ── Page Content ────────────────────────────────────────────── */
.atc-page-content .entry-content {
    color: var(--atc-silver);
    max-width: 800px;
    margin: 0 auto;
}

/* ── Catalog Section ─────────────────────────────────────────── */
.atc-catalog {
    position: relative;
    background: var(--atc-bg);
}

.atc-catalog-error {
    padding: 12px 16px;
    margin-bottom: 16px;
    background: rgba(255, 209, 102, 0.1);
    border: 1px solid rgba(255, 209, 102, 0.25);
    border-radius: 8px;
    color: var(--atc-gold);
    font-family: var(--atc-font-mono);
    font-size: 0.85rem;
    text-align: center;
}

.atc-catalog-error[hidden] {
    display: none;
}

/* ── Library Intro Section ──────────────────────────────────── */
.atc-library-intro {
    position: relative;
    padding: 72px 24px 58px;
    background:
        radial-gradient(circle at 50% 0%, rgba(0, 142, 216, 0.16), transparent 48%),
        linear-gradient(180deg, rgba(1, 2, 27, 0.18), rgba(1, 2, 27, 0.78));
}

.atc-library-intro__inner {
    max-width: 980px;
    margin: 0 auto;
    padding: 34px 38px;
    text-align: center;
    border: 1px solid rgba(255, 209, 102, 0.18);
    border-radius: 24px;
    background: rgba(10, 12, 46, 0.42);
    box-shadow:
        0 24px 80px rgba(0, 0, 0, 0.28),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.atc-library-intro__icon {
    width: 54px;
    height: 54px;
    margin: 0 auto 16px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #86e0ff;
    background: rgba(0, 142, 216, 0.12);
    border: 1px solid rgba(0, 142, 216, 0.32);
    box-shadow: 0 0 28px rgba(0, 142, 216, 0.22);
    font-size: 1.4rem;
}

.atc-library-intro__eyebrow {
    margin: 0 0 10px;
    color: #86e0ff;
    font-family: var(--atc-font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.atc-library-intro__title {
    margin: 0 0 12px;
    color: #ffd166;
    font-family: var(--atc-font-heading);
    font-size: clamp(1.9rem, 3vw, 3rem);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-shadow: 0 0 26px rgba(255, 209, 102, 0.16);
}

.atc-library-intro__text {
    max-width: 760px;
    margin: 0 auto;
    color: rgba(226, 232, 240, 0.84);
    font-family: var(--atc-font-body);
    font-size: clamp(1rem, 1.4vw, 1.18rem);
    line-height: 1.75;
}

.atc-catalog__header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.atc-catalog__title {
    font-family: var(--atc-font-heading);
    font-size: 1.6rem;
    color: var(--atc-gold);
    margin: 0;
}

.atc-catalog__count {
    font-family: var(--atc-font-mono);
    font-size: 0.85rem;
    color: var(--atc-text-muted);
}

/* ── Controls ────────────────────────────────────────────────── */
.atc-catalog__controls {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    align-items: center;
}

.atc-catalog__search {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.atc-catalog__search-input {
    width: 100%;
    padding: 12px 16px 12px 40px;
    background: var(--atc-surface);
    border: 1px solid var(--atc-border);
    border-radius: var(--atc-radius-sm);
    color: var(--atc-text);
    font-family: var(--atc-font-body);
    font-size: 0.9rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.atc-catalog__search-input:focus {
    outline: none;
    border-color: var(--atc-blue);
    box-shadow: 0 0 20px rgba(0, 142, 216, 0.15);
}

.atc-catalog__search-input::placeholder {
    color: var(--atc-text-muted);
}

.atc-catalog__search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--atc-text-muted);
}

.atc-catalog__filters {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.atc-catalog__select {
    padding: 12px 16px;
    background: var(--atc-surface);
    border: 1px solid var(--atc-border);
    border-radius: var(--atc-radius-sm);
    color: var(--atc-text);
    font-family: var(--atc-font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.3s ease;
    min-width: 160px;
}

.atc-catalog__select:focus {
    outline: none;
    border-color: var(--atc-blue);
}

/* ── Status ──────────────────────────────────────────────────── */
.atc-catalog__status {
    font-family: var(--atc-font-mono);
    font-size: 0.8rem;
    color: var(--atc-text-muted);
    margin-bottom: 16px;
    min-height: 1.4em;
}

/* ── Video Grid ──────────────────────────────────────────────── */
.atc-catalog__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.atc-catalog__empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    font-family: var(--atc-font-mono);
    color: var(--atc-text-muted);
    background: var(--atc-surface);
    border-radius: var(--atc-radius);
}

/* ── Video Card ──────────────────────────────────────────────── */
.atc-card {
    background: var(--atc-surface);
    border: 1px solid var(--atc-border);
    border-radius: var(--atc-radius-sm);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.atc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 142, 216, 0.1);
    border-color: var(--atc-border-strong, rgba(0, 142, 216, 0.36));
}

.atc-card__media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #000;
}

.atc-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.atc-card:hover .atc-card__img {
    transform: scale(1.05);
}

/* Primary category badge — top-left, single pill */
.atc-card__primary-category {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 4;
    max-width: calc(100% - 24px);
    padding: 6px 10px;
    border: 1px solid rgba(134, 224, 255, 0.46);
    border-radius: 999px;
    background: rgba(1, 2, 27, 0.74);
    color: #86e0ff;
    font-family: var(--atc-font-mono);
    font-size: 0.68rem;
    line-height: 1;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow:
        0 8px 22px rgba(0, 0, 0, 0.35),
        0 0 18px rgba(0, 142, 216, 0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.atc-card__play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(1, 2, 27, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.atc-card:hover .atc-card__play-overlay,
.atc-card:focus-within .atc-card__play-overlay {
    opacity: 1;
}

.atc-card__play-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 142, 216, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
}

.atc-card__body {
    padding: 16px;
}

.atc-card__title {
    font-family: var(--atc-font-heading);
    font-size: 1rem;
    color: var(--atc-text);
    margin: 0 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.atc-card__description {
    font-family: var(--atc-font-body);
    font-size: 0.85rem;
    color: var(--atc-text-muted);
    line-height: 1.5;
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.atc-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 12px;
    font-family: var(--atc-font-mono);
    font-size: 0.75rem;
}

.atc-card__channel {
    color: var(--atc-blue);
}

.atc-card__sources {
    color: var(--atc-text-muted);
}

.atc-card__watch-btn {
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: 1px solid var(--atc-blue);
    border-radius: 8px;
    color: var(--atc-blue);
    font-family: var(--atc-font-mono);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease;
}

.atc-card__watch-btn:hover {
    background: var(--atc-blue);
    color: #fff;
}

/* ── Category Chips (legacy multi-badge — hidden, use single badge instead) ── */
.atc-chip {
    display: none;
}

/* ── Pagination ──────────────────────────────────────────────── */
.atc-pagination {
    display: flex;
    justify-content: center;
}

.atc-pagination__list {
    display: flex;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
    justify-content: center;
}

.atc-pagination__link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--atc-border);
    border-radius: 8px;
    background: var(--atc-surface);
    color: var(--atc-silver);
    font-family: var(--atc-font-mono);
    font-size: 0.85rem;
    text-decoration: none;
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.atc-pagination__link:hover {
    background: var(--atc-surface-strong);
    border-color: var(--atc-gold);
    color: var(--atc-gold);
}

.atc-pagination__item--current .atc-pagination__link {
    background: var(--atc-gold);
    border-color: var(--atc-gold);
    color: var(--atc-bg);
    font-weight: 700;
}

.atc-pagination__item--disabled .atc-pagination__link {
    opacity: 0.4;
    pointer-events: none;
}

.atc-pagination__item--ellipsis span {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 8px;
    color: var(--atc-text-muted);
    font-family: var(--atc-font-mono);
}

/* ── Reduced Motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .atc-coverflow__track {
        transition: none;
    }
    .atc-coverflow__slide {
        transition: none;
    }
    .atc-card,
    .atc-card__img,
    .atc-card__play-overlay {
        transition: none;
    }
}

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .atc-hero {
        min-height: 680px;
        padding: 90px 18px 56px;
        background-position: center top;
    }
    .atc-hero__stats {
        gap: 16px;
    }
    .atc-coverflow {
        padding: 20px 40px;
    }
    .atc-coverflow__slide {
        flex: 0 0 calc(50% - 8px);
    }
    .atc-catalog__controls {
        flex-direction: column;
    }
    .atc-catalog__search {
        width: 100%;
    }
    .atc-catalog__filters {
        width: 100%;
    }
    .atc-catalog__select {
        flex: 1;
        min-width: 0;
    }
    .atc-catalog__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .atc-hero {
        min-height: 620px;
        padding: 78px 14px 44px;
    }
    .atc-coverflow__slide {
        flex: 0 0 80%;
    }
}