:root {
    --bg: #0b0d10;
    --surface: #14171c;
    --border: #232831;
    --text: #e8ecf1;
    --muted: #8a93a3;
    --accent: #fb7299; /* bilibili pink */
    --accent-hover: #ff85a8;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.45 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.muted { color: var(--muted); }

.centered {
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    padding: max(env(safe-area-inset-top), 24px) 16px max(env(safe-area-inset-bottom), 24px);
}

.card {
    width: min(440px, 100%);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 24px;
    text-align: center;
}

.card h1 { margin: 0 0 8px; font-size: 22px; font-weight: 600; }

.qr-frame {
    margin: 24px auto;
    width: 280px;
    height: 280px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.qr-frame img { width: 100%; height: 100%; display: block; }
.qr-frame .loading { color: #999; font-size: 14px; }

.status {
    margin: 8px 0 0;
    font-size: 14px;
    color: var(--muted);
    min-height: 1.4em;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: max(env(safe-area-inset-top), 12px) 16px 12px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(11, 13, 16, 0.85);
    backdrop-filter: saturate(140%) blur(8px);
    z-index: 10;
}
.topbar h1 { margin: 0; font-size: 18px; font-weight: 600; }

.container {
    padding: 16px;
    max-width: 720px;
    margin: 0 auto;
}

button.link {
    background: none;
    border: 0;
    padding: 0;
    color: var(--muted);
    font: inherit;
    cursor: pointer;
}
button.link:hover { color: var(--text); }

/* topbar additions */
.brand { color: var(--text); font-weight: 600; font-size: 18px; }
.searchbar { flex: 1; margin-left: 12px; }
.searchbar input {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 999px;
    padding: 8px 14px;
    font: inherit;
    -webkit-appearance: none;
}
.searchbar input::placeholder { color: var(--muted); }
.searchbar input:focus {
    outline: none;
    border-color: var(--accent);
}

/* card grid */
.card-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
@media (min-width: 700px)  { .card-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; } }
@media (min-width: 1000px) { .card-grid { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1400px) { .card-grid { grid-template-columns: repeat(5, 1fr); } }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}
.card-link {
    display: block;
    color: inherit;
}
.card-link:hover { background: rgba(255,255,255,0.02); }

.thumb {
    aspect-ratio: 16 / 9;
    position: relative;
    background: #000;
    overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .duration {
    position: absolute;
    right: 6px;
    bottom: 6px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
}

.meta { padding: 10px 10px 12px; }
.meta .title {
    margin: 0;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.meta .byline { margin: 4px 0 0; color: var(--muted); font-size: 11px; line-height: 1.4; }
.error { color: #ff6b7a; }

/* folder list (favorites top page) */
.folder-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.folder-list a {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 16px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 10px; color: inherit;
}
.folder-list a:hover { background: rgba(255,255,255,0.04); }
.folder-title { font-size: 15px; font-weight: 500; }
.folder-count {
    font-size: 12px; color: var(--muted);
    background: var(--bg); border: 1px solid var(--border);
    border-radius: 999px; padding: 2px 10px;
}

/* sub-navigation row under topbar */
.subnav {
    display: flex;
    gap: 6px;
    padding: 8px 16px 8px;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
    background: rgba(11, 13, 16, 0.85);
    backdrop-filter: saturate(140%) blur(8px);
    position: sticky;
    top: 0;
    z-index: 9;
}
.subnav::-webkit-scrollbar { display: none; }
.subnav a {
    flex: 0 0 auto;
    padding: 6px 12px;
    color: var(--muted);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
}
.subnav a:hover { color: var(--text); background: var(--surface); }
.subnav a.active { color: var(--text); background: var(--surface); border: 1px solid var(--border); padding: 5px 11px; }

/* topbar adjustments to coexist with subnav */
.topbar { position: static; border-bottom: 0; }

/* watch page */
.player-wrap {
    margin: -16px -16px 16px;
    background: #000;
}
.player-wrap video { display: block; width: 100%; height: auto; max-height: 70vh; }
.watch-title { font-size: 18px; font-weight: 600; margin: 0 0 4px; line-height: 1.35; }
.watch .byline { color: var(--muted); margin: 0 0 16px; }
.section-title { font-size: 14px; font-weight: 600; margin: 16px 0 8px; }
.parts .part-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.parts .part-list a {
    display: block; padding: 10px 12px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; color: inherit; font-size: 14px;
}
.parts .part-list a.active { border-color: var(--accent); color: var(--accent); }
.warning {
    background: #2a1f12; border: 1px solid #5a3f1c; color: #f0c47a;
    padding: 10px 12px; border-radius: 8px; font-size: 13px;
}

/* season list (ugc_season) */
.season { margin-top: 16px; }
.season .section-title .muted { font-weight: 400; font-size: 12px; }
.season-list {
    list-style: none; margin: 0; padding: 0;
    display: flex; flex-direction: column; gap: 6px;
    max-height: 480px; overflow-y: auto;
    border: 1px solid var(--border); border-radius: 10px;
    background: var(--surface); padding: 6px;
}
.season-list a {
    display: flex; gap: 10px; padding: 6px;
    border-radius: 8px; color: inherit;
    align-items: center;
}
.season-list a:hover { background: rgba(255,255,255,0.04); }
.season-list a.active { background: rgba(251,114,153,0.12); }
.season-list a.active .ep-title { color: var(--accent); }
.ep-thumb {
    flex: 0 0 120px;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}
.ep-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ep-thumb .ep-duration {
    position: absolute; right: 4px; bottom: 4px;
    background: rgba(0,0,0,0.75); color: #fff;
    font-size: 10px; padding: 1px 5px; border-radius: 3px;
}
.ep-title {
    flex: 1; min-width: 0;
    font-size: 13px; line-height: 1.35;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}
@media (max-width: 480px) {
    .ep-thumb { flex-basis: 100px; }
}
.desc { margin-top: 16px; }
.desc summary { cursor: pointer; color: var(--muted); font-size: 14px; }
.desc pre {
    white-space: pre-wrap; font: inherit; color: var(--text);
    background: var(--surface); border: 1px solid var(--border);
    padding: 12px; border-radius: 8px; margin-top: 8px;
}