/* ============================================================
   Đọc Truyện – SPA stylesheet
   Mobile-first, CSS variables theo theme (light/sepia/dark/amoled)
   ============================================================ */

/* ---------- Theme variables ---------- */
body[data-theme="light"] {
    --bg: #f5f6f8;
    --bg2: #ffffff;
    --card: #ffffff;
    --border: #e6e8ec;
    --text: #1c2333;
    --text2: #7a8091;
    --accent: #e44d26;
    --accent-soft: #fdeee7;
    --accent-contrast: #ffffff;
    --ok: #1a9e57;
    --ok-soft: #e6f7ee;
    --warn: #f5a623;
    --shadow: 0 1px 3px rgba(20, 28, 48, .08), 0 6px 18px rgba(20, 28, 48, .06);
    --radius: 14px;
    --topbar-h: 54px;
    --bottomnav-h: 60px;
}
body[data-theme="sepia"] {
    --bg: #efe6d7;
    --bg2: #f8f1e5;
    --card: #f8f1e5;
    --border: #e0d4bf;
    --text: #3b2f22;
    --text2: #8d7c63;
    --accent: #b34a1f;
    --accent-soft: #f3e2d3;
    --accent-contrast: #fffdf7;
    --ok: #3a7d4a;
    --ok-soft: #e5efe3;
    --warn: #c78b2c;
    --shadow: 0 1px 3px rgba(70, 50, 20, .1), 0 6px 18px rgba(70, 50, 20, .07);
    --radius: 14px;
    --topbar-h: 54px;
    --bottomnav-h: 60px;
}
body[data-theme="dark"] {
    --bg: #12151c;
    --bg2: #1a1f29;
    --card: #1d232f;
    --border: #2b323f;
    --text: #e8ebf1;
    --text2: #8a91a3;
    --accent: #ff6a3d;
    --accent-soft: #33231d;
    --accent-contrast: #1a1512;
    --ok: #34c97a;
    --ok-soft: #143322;
    --warn: #f0b23b;
    --shadow: 0 1px 3px rgba(0, 0, 0, .35), 0 8px 22px rgba(0, 0, 0, .35);
    --radius: 14px;
    --topbar-h: 54px;
    --bottomnav-h: 60px;
}
body[data-theme="amoled"] {
    --bg: #000000;
    --bg2: #0c0d10;
    --card: #111318;
    --border: #1e222b;
    --text: #e6e8ee;
    --text2: #7d8495;
    --accent: #ff6a3d;
    --accent-soft: #2a1c16;
    --accent-contrast: #0c0d10;
    --ok: #34c97a;
    --ok-soft: #0f241a;
    --warn: #f0b23b;
    --shadow: 0 1px 3px rgba(0, 0, 0, .5), 0 8px 24px rgba(0, 0, 0, .55);
    --radius: 14px;
    --topbar-h: 54px;
    --bottomnav-h: 60px;
}

/* ---------- Base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    transition: background .25s, color .25s;
}
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
img { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
.hidden { display: none !important; }
.mut { color: var(--text2); font-size: 13px; }

/* ---------- Scrollbar (webkit) ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- Topbar ---------- */
.topbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: var(--topbar-h);
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.topbar-inner {
    max-width: 1080px; height: 100%; margin: 0 auto; padding: 0 12px;
    display: flex; align-items: center; gap: 10px;
}
.brand { display: flex; align-items: center; gap: 8px; cursor: pointer; margin-right: auto; }
.brand-mark {
    font-size: 13px; font-weight: 900; letter-spacing: .5px;
    background: var(--accent); color: var(--accent-contrast);
    padding: 4px 7px; border-radius: 8px;
}
.brand-text { font-weight: 800; font-size: 16px; }
.topbar-actions { display: flex; align-items: center; gap: 2px; }
.icon-btn {
    width: 38px; height: 38px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--text); font-size: 17px; transition: background .15s;
}
.icon-btn:hover { background: var(--accent-soft); color: var(--accent); }
.icon-btn:active { transform: scale(.94); }

/* ---------- Bottom nav ---------- */
.bottomnav {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
    height: var(--bottomnav-h);
    background: var(--bg2);
    border-top: 1px solid var(--border);
    display: flex;
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -1px 8px rgba(0, 0, 0, .04);
}
.bn-item {
    flex: 1; min-width: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
    font-size: 10px; font-weight: 600; color: var(--text2);
    transition: color .15s;
}
.bn-item i { font-size: 19px; }
.bn-item.active { color: var(--accent); }
.bn-item:active { transform: scale(.95); }

/* ---------- App shell ---------- */
.app {
    max-width: 1080px; margin: 0 auto;
    padding: calc(var(--topbar-h) + 12px) 12px calc(var(--bottomnav-h) + 16px);
}
.page-root { animation: pageIn .22s ease; }
@keyframes pageIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.page-head {
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
    margin: 14px 0 16px; flex-wrap: wrap;
}
.page-head h1 { font-size: 21px; font-weight: 800; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 16px; border-radius: 11px; font-weight: 700; font-size: 14px;
    transition: transform .12s, filter .15s, background .15s;
    white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:active { filter: brightness(1.1); }
.btn-outline { border: 1px solid var(--border); color: var(--text); background: var(--bg2); }
.btn-outline:active { background: var(--accent-soft); }
.btn-sm { padding: 6px 11px; font-size: 12.5px; border-radius: 9px; }

/* ---------- Search bars ---------- */
.search-bar {
    display: flex; align-items: center; gap: 8px;
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 12px; padding: 9px 12px; margin: 14px 0;
    box-shadow: var(--shadow);
}
.search-bar i { color: var(--text2); font-size: 17px; }
.search-bar input { flex: 1; min-width: 0; background: none; border: none; outline: none; font-size: 15px; }
.search-bar input::placeholder { color: var(--text2); }
.search-bar .clear { color: var(--text2); font-size: 16px; display: inline-flex; padding: 2px; }
.search-bar .clear:hover { color: var(--text); }

/* ---------- Filters / chips ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.chip {
    padding: 7px 13px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
    background: var(--bg2); border: 1px solid var(--border); color: var(--text2);
    transition: all .15s;
}
.chip.active { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); }
.chip:active { transform: scale(.96); }

/* ---------- Cover rail / grid ---------- */
.section-title {
    display: flex; align-items: center; justify-content: space-between;
    margin: 20px 0 10px; font-size: 17px; font-weight: 800;
}
.section-title .more { font-size: 13px; font-weight: 600; color: var(--accent); cursor: pointer; }
.hrail { display: flex; gap: 12px; overflow-x: auto; padding: 2px 2px 10px; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; }
.hrail::-webkit-scrollbar { display: none; }

.cover-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 12px; margin-top: 6px; }
.cover-card { scroll-snap-align: start; flex: 0 0 106px; cursor: pointer; width: 106px; }
.cover-grid .cover-card { width: auto; flex: initial; scroll-snap-align: initial; }
.cover-wrap { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 3/4; box-shadow: var(--shadow); background: var(--bg2); }
.cover-wrap img { width: 100%; height: 100%; object-fit: cover; }
.no-img { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 30px; color: var(--text2); background: var(--bg2); }
.badge-tag {
    position: absolute; top: 6px; left: 6px;
    background: var(--accent); color: var(--accent-contrast);
    font-size: 9px; font-weight: 800; padding: 2px 6px; border-radius: 6px; letter-spacing: .4px;
}
.badge-tag.ongoing { background: var(--ok); }
.cover-info { padding: 7px 2px 0; }
.cover-info h3 {
    font-size: 12.5px; font-weight: 600; line-height: 1.35; height: 34px;
    overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.cover-meta { display: flex; align-items: center; gap: 5px; color: var(--text2); font-size: 11px; margin-top: 3px; flex-wrap: wrap; }
.cover-meta .rating { color: var(--warn); font-weight: 700; }

/* ---------- Skeletons ---------- */
.skel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 12px; margin-top: 6px; }
.skel-card { width: 106px; }
.skel {
    background: linear-gradient(100deg, var(--bg2) 40%, var(--border) 50%, var(--bg2) 60%);
    background-size: 200% 100%; animation: skel 1.2s infinite;
    border-radius: 8px; position: relative; overflow: hidden;
}
@keyframes skel { from { background-position: 120% 0; } to { background-position: -80% 0; } }
.skel-img { width: 100%; aspect-ratio: 3/4; border-radius: var(--radius); }
.skel-line { height: 12px; margin-top: 8px; }
.skel-line.short { width: 60%; }
.bag.skel-row { display: flex; gap: 12px; }
.skel-body { flex: 1; align-self: center; }

/* ---------- Error / empty states ---------- */
.error-state, .empty-state {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 12px; text-align: center; padding: 48px 20px; color: var(--text2);
}
.error-state i, .empty-state i { font-size: 44px; opacity: .5; }
.error-state p, .empty-state p { font-size: 15px; line-height: 1.6; }

/* ---------- Pager ---------- */
.pager { display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; margin: 20px 0 8px; }
.pager button {
    min-width: 36px; height: 36px; padding: 0 8px; border-radius: 9px;
    border: 1px solid var(--border); background: var(--bg2); color: var(--text);
    font-size: 13px; font-weight: 600; transition: all .15s;
}
.pager button.active { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.pager button:disabled { opacity: .35; }
.pager button.more { border-color: transparent; background: none; }

/* ---------- Detail page ---------- */
.detail-hero { display: flex; gap: 14px; background: var(--card); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.detail-cover, .detail-hero .no-img {
    flex: 0 0 auto; width: 122px; height: 163px; border-radius: 10px; object-fit: cover; overflow: hidden;
}
.detail-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.detail-title { font-size: 18px; font-weight: 800; line-height: 1.3; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.genre-tag {
    font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 6px;
    background: var(--accent-soft); color: var(--accent);
}
.detail-stats { display: flex; flex-wrap: wrap; gap: 5px 14px; font-size: 12.5px; color: var(--text2); }
.detail-stats span { display: inline-flex; align-items: center; gap: 4px; }
.detail-stats b { color: var(--text); }
.detail-stats .bi-star-fill { color: var(--warn); }
.detail-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.detail-actions .btn { flex: 1 1 auto; min-width: 120px; }

.detail-desc { background: var(--card); border-radius: var(--radius); padding: 16px; margin-top: 12px; box-shadow: var(--shadow); }
.detail-desc h2 { font-size: 16px; font-weight: 800; margin-bottom: 8px; }
.detail-desc p { font-size: 14px; color: var(--text); opacity: .92; white-space: pre-line; line-height: 1.7; }
.detail-desc.closed p { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- Chapter panel ---------- */
.chapter-panel { background: var(--card); border-radius: var(--radius); padding: 14px; margin-top: 12px; box-shadow: var(--shadow); }
.chapter-panel .head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.chapter-panel .head h2 { font-size: 16px; font-weight: 800; }
.chp-search {
    display: flex; align-items: center; gap: 8px;
    border: 1px solid var(--border); border-radius: 10px; padding: 8px 11px; margin-bottom: 8px; background: var(--bg);
}
.chp-search input { flex: 1; min-width: 0; background: none; border: none; outline: none; font-size: 14px; }
.chp-list { max-height: 520px; overflow-y: auto; }
.chp-item {
    display: flex; align-items: center; gap: 10px; padding: 11px 8px;
    border-bottom: 1px solid var(--border); cursor: pointer; border-radius: 8px;
}
.chp-item:hover { background: var(--bg); }
.chp-item:active { background: var(--accent-soft); }
.chp-item.read { opacity: .55; }
.chp-item.current { background: var(--accent-soft); }
.chp-no { font-size: 13px; font-weight: 800; color: var(--accent); min-width: 44px; }
.chp-name { flex: 1; min-width: 0; font-size: 14px; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }
.chp-read { font-size: 11px; color: var(--ok); font-weight: 700; flex: 0 0 auto; }
.chp-empty { text-align: center; color: var(--text2); padding: 26px 0; font-size: 14px; }
.loadmore {
    display: block; width: 100%; margin-top: 10px; padding: 11px;
    border: 1px dashed var(--border); border-radius: 10px; color: var(--accent);
    font-weight: 700; font-size: 13.5px; transition: background .15s;
}
.loadmore:hover { background: var(--accent-soft); }

/* ---------- Stack / list items (library, history) ---------- */
.stack { display: flex; flex-direction: column; gap: 10px; }
.list-item {
    display: flex; align-items: center; gap: 12px;
    background: var(--card); border-radius: var(--radius); padding: 10px;
    box-shadow: var(--shadow); cursor: pointer; transition: transform .1s;
}
.list-item:active { transform: scale(.985); }
.li-cover, .list-item .no-img.li-cover {
    flex: 0 0 auto; width: 46px; height: 61px; border-radius: 8px; object-fit: cover; overflow: hidden;
}
.list-item .no-img.li-cover { font-size: 18px; }
.li-body { flex: 1; min-width: 0; }
.li-title { font-size: 14.5px; font-weight: 700; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }
.li-sub { font-size: 12.5px; color: var(--text2); margin-top: 2px; }
.li-time { font-size: 11px; color: var(--text2); margin-top: 2px; }
.li-actions { display: flex; gap: 2px; flex: 0 0 auto; }
.icon-btn-sm {
    width: 32px; height: 32px; border-radius: 8px; display: inline-flex;
    align-items: center; justify-content: center; color: var(--text2); font-size: 15px;
}
.icon-btn-sm:hover { background: var(--bg); color: var(--text); }
.icon-btn-sm.danger { color: #e5484d; }
.icon-btn-sm.danger:hover { background: rgba(229, 72, 77, .12); }

/* ---------- Segmented controls ---------- */
.seg {
    display: flex; background: var(--bg2); border: 1px solid var(--border);
    border-radius: 12px; padding: 3px; gap: 2px; margin-bottom: 16px; flex-wrap: nowrap;
}
.seg button {
    flex: 1; padding: 8px 6px; border-radius: 9px; font-size: 13px; font-weight: 600; color: var(--text2);
    white-space: nowrap; transition: all .15s;
}
.seg button.active { background: var(--accent); color: var(--accent-contrast); }

/* ---------- Settings ---------- */
.settings-group { background: var(--card); border-radius: var(--radius); padding: 4px 14px; margin-bottom: 12px; box-shadow: var(--shadow); }
.sg-head { font-size: 12px; font-weight: 800; letter-spacing: .5px; text-transform: uppercase; color: var(--text2); padding: 12px 0 6px; }
.settings-row {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 12px 0; border-bottom: 1px solid var(--border); cursor: pointer;
}
.settings-row:last-child { border-bottom: none; }
.sr-label { font-size: 14.5px; font-weight: 600; }
.sr-sub { font-size: 12px; color: var(--text2); margin-top: 2px; }

.seg-mini { display: flex; background: var(--bg); border-radius: 9px; padding: 2px; gap: 2px; }
.seg-mini button { padding: 5px 9px; border-radius: 7px; font-size: 11.5px; font-weight: 700; color: var(--text2); }
.seg-mini button.active { background: var(--accent); color: var(--accent-contrast); }

.stepper { display: flex; align-items: center; gap: 2px; background: var(--bg); border-radius: 9px; padding: 2px; }
.stepper button {
    width: 30px; height: 30px; border-radius: 7px; font-size: 17px; font-weight: 800;
    color: var(--text); transition: background .15s;
}
.stepper button:hover { background: var(--accent-soft); }
.stepper span { min-width: 44px; text-align: center; font-size: 13px; font-weight: 700; }

.toggle { position: relative; display: inline-block; width: 46px; height: 26px; border-radius: 999px; background: var(--border); transition: background .2s; }
.toggle::after {
    content: ''; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px;
    border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .25); transition: transform .2s;
}
.toggle.on { background: var(--ok); }
.toggle.on::after { transform: translateX(20px); }

/* ---------- Admin ---------- */
.admin-login { display: flex; flex-direction: column; gap: 12px; max-width: 340px; }
.admin-login h2 { font-size: 17px; }
.admin-login input { background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 11px 13px; font-size: 14px; outline: none; }
.admin-login .secret { font-size: 12px; color: var(--text2); }
.admin-section { display: flex; flex-direction: column; gap: 12px; }
.admin-section h3 { font-size: 16px; }
.admin-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.admin-section .cfg-label { font-size: 12px; color: var(--text2); margin-top: 2px; }
.admin-section .cfg-input { background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 14px; outline: none; color: var(--text); width: 100%; box-sizing: border-box; }
.progress-shell { background: var(--card); border-radius: var(--radius); padding: 14px; margin-top: 4px; box-shadow: var(--shadow); }
.progress-track { height: 9px; border-radius: 999px; background: var(--border); overflow: hidden; }
.progress-fill { height: 100%; width: 0; border-radius: 999px; background: var(--accent); transition: width .3s; }
.progress-text { font-size: 12.5px; color: var(--text2); margin-top: 8px; min-height: 17px; }
.check-report { background: var(--card); border-radius: var(--radius); padding: 14px; margin-top: 12px; box-shadow: var(--shadow); font-size: 13.5px; }
.check-cols { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 10px; }
.check-col { flex: 1 1 260px; min-width: 0; }
.check-col h4 { font-size: 13px; margin-bottom: 6px; }
.check-col ul { list-style: none; }
.check-col li { padding: 4px 0; font-size: 13px; border-bottom: 1px dotted var(--border); }
.badge { font-size: 10px; font-weight: 800; padding: 2px 6px; border-radius: 5px; margin-right: 6px; }
.badge.new { background: var(--ok-soft); color: var(--ok); }
.badge.upd { background: var(--accent-soft); color: var(--accent); }

/* ---------- Reader overlay ---------- */
.reader {
    position: fixed; top: var(--topbar-h); left: 0; right: 0; bottom: var(--bottomnav-h); z-index: 90;
    display: flex; flex-direction: column;
    background: var(--bg);
}
.reader-top {
    display: flex; align-items: center; gap: 6px; padding: 8px 10px;
    background: var(--bg2); border-bottom: 1px solid var(--border); z-index: 2;
}
.reader-title { flex: 1; min-width: 0; font-weight: 700; font-size: 14px; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; text-align: center; }
.reader-skeleton { overflow-y: auto; flex: 1; padding: 24px 18px; }
.reader-skeleton .rs-line { margin: 14px auto; height: 14px; }
.reader-content {
    flex: 1; overflow-y: auto; padding: 22px 18px 60px;
    --fs: 17px; --lh: 1.8; --ff: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-family: var(--ff);
    -webkit-overflow-scrolling: touch;
}
.reader-chapter-title {
    max-width: 760px; margin: 4px auto 18px; text-align: center;
    font-size: calc(var(--fs) * 1.15); font-weight: 800; line-height: 1.4;
}
.reader-chapter-title small { display: block; font-size: 12.5px; color: var(--text2); font-weight: 500; margin-top: 5px; }
.reader-para { max-width: 760px; margin: 0 auto; }
.reader-para p { margin: 0 0 calc(var(--lh) * 0.6em); font-size: var(--fs); line-height: var(--lh); color: var(--text); }

.reader-progressbar { height: 3px; background: var(--border); }
.reader-progressbar div { height: 100%; width: 0; background: var(--accent); transition: width .1s linear; }

.reader-nav {
    display: flex; gap: 4px; padding: 8px 10px;
    background: var(--bg2); border-top: 1px solid var(--border);
    padding-bottom: calc(8px + env(safe-area-inset-bottom)); z-index: 2;
}
.reader-nav button {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
    padding: 11px 6px; border-radius: 10px; font-weight: 700; font-size: 13px;
    background: var(--bg); transition: background .15s;
}
.reader-nav button:hover { background: var(--accent-soft); }
.reader-nav button:disabled { opacity: .35; }
.reader-nav button:active { transform: scale(.97); }
.reader-nav button i { font-size: 17px; }
.reader-nav button .rn-label { font-size: 12.5px; }
.reader.nav-hidden .reader-top, .reader.nav-hidden .reader-nav { transform: translateY(100%); opacity: 0; pointer-events: none; }

/* reader menu + toc panels */
.reader-menu, .reader-toc {
    position: absolute; right: 8px; top: 54px; width: min(340px, calc(100vw - 16px));
    max-height: calc(100% - 62px); overflow-y: auto;
    background: var(--bg2); border: 1px solid var(--border); border-radius: 14px;
    box-shadow: var(--shadow); padding: 12px; z-index: 5;
}
.reader-toc { left: 8px; right: 8px; width: auto; padding: 8px 0; }
.reader-toc h3 { font-size: 14px; padding: 4px 14px 8px; }
.toc-item {
    display: flex; align-items: center; gap: 10px; padding: 10px 14px;
    font-size: 13.5px; cursor: pointer; border-bottom: 1px solid var(--border);
}
.toc-item:hover { background: var(--bg); }
.toc-item.read { opacity: .55; }
.toc-item.current { background: var(--accent-soft); font-weight: 700; }
.toc-no { font-size: 11px; font-weight: 800; color: var(--accent); min-width: 26px; }
.rg { margin-bottom: 12px; }
.rg:last-child { margin-bottom: 4px; }
.rg label { display: block; font-size: 12px; font-weight: 700; color: var(--text2); margin-bottom: 7px; }
.rg .seg-mini, .rg .stepper, .rg select { width: 100%; }
.rg .seg-mini button { flex: 1; }
.rg select { width: 100%; }
.rg .toggle-wrap { display: flex; justify-content: flex-end; }

/* ---------- Toast ---------- */
.toast-host {
    position: fixed; left: 0; right: 0; bottom: calc(var(--bottomnav-h) + 16px);
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    z-index: 300; pointer-events: none; padding: 0 16px;
}
.toast {
    max-width: 92vw;
    background: var(--text); color: var(--bg);
    padding: 10px 16px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
    box-shadow: 0 6px 22px rgba(0, 0, 0, .28);
    animation: toastIn .22s ease;
}
.toast.ok { background: var(--ok); color: #fff; }
.toast.err { background: #e5484d; color: #fff; }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- Responsive: desktop ---------- */
@media (min-width: 640px) {
    .hrail { flex-wrap: wrap; overflow: visible; }
    .cover-card { flex: 0 0 130px; width: 130px; }
    .cover-grid, .skel-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
    .detail-hero { padding: 18px; }
    .detail-cover, .detail-hero .no-img { width: 150px; height: 200px; }
}

/* === OVERRIDE: banner che toan bo noi dung doc (phai bam de tat = unlock) === */
.ad-unlock{
    position:fixed;inset:0;z-index:260;
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:12px;padding:26px;max-width:none;margin:0;border-radius:0;overflow:hidden;
    cursor:pointer;color:#fff;text-decoration:none;
    background:rgba(4,9,18,.66);
    -webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);
}
.ad-unlock::before{content:'';position:absolute;inset:0;background:
    radial-gradient(circle at 50% 18%,rgba(255,120,60,.22),transparent 52%)}
.ad-unlock-title{position:relative;font-size:21px;font-weight:800;display:flex;
    align-items:center;justify-content:center;gap:8px;letter-spacing:.3px}
.ad-unlock-title i{font-size:22px}
.ad-unlock-img{position:relative;width:min(320px,78vw);height:auto;border-radius:16px;
    box-shadow:0 12px 44px rgba(0,0,0,.5);border:3px solid rgba(255,255,255,.22)}
.ad-unlock-banner{position:relative;display:block;line-height:0;border-radius:16px;
    transition:transform .12s, box-shadow .12s}
.ad-unlock-banner:active{transform:scale(.97)}
.ad-unlock-link{position:relative;margin-top:2px;font-size:14.5px;font-weight:800;
    color:#ffd166;text-decoration:underline;text-underline-offset:3px;
    padding:9px 18px;border:1px solid rgba(255,209,102,.45);border-radius:999px;
    transition:background .15s}
.ad-unlock-link:hover{background:rgba(255,209,102,.14)}
.ad-unlock-text{position:relative;max-width:560px;font-size:15px;line-height:1.6;text-align:center;opacity:.96}
.ad-unlock-note{position:relative;max-width:520px;font-size:12.5px;opacity:.8;font-style:italic;text-align:center}
.ad-unlock:active .ad-unlock-title{transform:scale(.97)}
.ad-unlock-title{transition:transform .12s}
/* === END OVERRIDE === */