/* Palette lấy từ logo kênh: xanh mực + giấy kem, điểm nhấn đỏ bìa vải + vàng nhũ */
:root {
  --bg: #fbfaf7;
  --bg-soft: #f2f0eb;
  --surface: #ffffff;
  --line: #e5e1d9;
  --ink: #1d2433;
  --text: #2c3242;
  --muted: #6f6a60;
  --accent: #9b2c3a;
  --accent-ink: #fff;
  --accent-soft: #f6e3e1;
  --gold: #a87a2a;
  --shadow: 0 1px 2px rgba(29,36,51,.06), 0 8px 24px rgba(29,36,51,.08);
  --tp: #6b5fb0;
  --t0: #4f8a5b;
  --t1: #8a8f99;
  --t2: #b8862b;
  --t3: #3b7ea1;
  --radius: 14px;
  --serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --sans: "Be Vietnam Pro", system-ui, -apple-system, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111622; --bg-soft: #171d2b; --surface: #1b2232; --line: #2a3346;
    --ink: #f3ead9; --text: #ddd5c6; --muted: #9b968c;
    --accent: #e0737f; --accent-ink: #1a0d10; --accent-soft: #3a2228; --gold: #d9ab57;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
    --tp: #a99cf0; --t0: #7cbf89; --t1: #b9bec8; --t2: #e0b25a; --t3: #7fc0e3;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111622; --bg-soft: #171d2b; --surface: #1b2232; --line: #2a3346;
  --ink: #f3ead9; --text: #ddd5c6; --muted: #9b968c;
  --accent: #e0737f; --accent-ink: #1a0d10; --accent-soft: #3a2228; --gold: #d9ab57;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  --tp: #a99cf0; --t0: #7cbf89; --t1: #b9bec8; --t2: #e0b25a; --t3: #7fc0e3;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 15px/1.55 var(--sans);
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, select, input { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 16px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- header + logo ---------- */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 28px; padding-bottom: 28px; margin-bottom: 12px; }
.logo { display: flex; align-items: center; gap: 14px; text-decoration: none; min-width: 0; }
.logo img { width: 64px; height: 64px; border-radius: 50%; box-shadow: 0 0 0 2px var(--surface), 0 0 0 3.5px var(--gold); flex: none; }
.logo-text { display: flex; flex-direction: column; min-width: 0; }
.logo-name { font: 800 34px/1.05 var(--serif); color: var(--ink); letter-spacing: -.01em; }
.logo-sub { font-size: 13px; color: var(--gold); letter-spacing: .14em; text-transform: uppercase; margin-top: 4px; font-weight: 500; }
.top-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.icon-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 44px; padding: 0 14px;
  border-radius: 999px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; font-size: 14px; white-space: nowrap;
}
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn.update { background: var(--gold); color: #1d1608; border-color: transparent; font-weight: 500; }
.icon-btn.update.spin svg { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
/* Đọc gì hôm nay: vàng nhũ cho nổi */
.icon-btn.random { background: var(--gold); color: #1d1608; border-color: transparent; font-weight: 500; box-shadow: 0 2px 10px color-mix(in srgb, var(--gold) 40%, transparent); }
.icon-btn.random:hover { filter: brightness(1.06); }
.icon-btn.update.small { height: 32px; padding: 0 10px; font-size: 13px; background: var(--bg-soft); color: var(--text); border-color: var(--line); font-weight: 500; }
.icon-btn.update.small svg { width: 15px; height: 15px; }
.icon-btn.theme { width: 44px; justify-content: center; padding: 0; }
.theme .moon { display: none; }
:root[data-theme="dark"] .theme .sun { display: none; }
:root[data-theme="dark"] .theme .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme .sun { display: none; }
  :root:not([data-theme="light"]) .theme .moon { display: block; }
}
.join {
  text-decoration: none; font-weight: 500; font-size: 14px; white-space: nowrap;
  height: 44px; display: inline-flex; align-items: center; padding: 0 18px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink);
}

/* ---------- hero: Mới cập nhật ---------- */
.hero { position: relative; overflow: hidden; padding-bottom: 20px; }
.hero-bg {
  position: absolute; inset: -60px; background-size: cover; background-position: center;
  filter: blur(50px) saturate(1.1); opacity: .35; transform: scale(1.1); transition: background-image .3s;
}
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 40%, var(--bg)); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; display: flex; gap: 32px; align-items: center; padding-top: 20px; padding-bottom: 20px; }
.hero-cover { flex: none; padding: 0; border: 0; background: none; cursor: pointer; }
.hero-cover img {
  width: min(320px, 36vw); aspect-ratio: 1; object-fit: contain; border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0,0,0,.35); background: #000;
}
.eyebrow { margin: 0 0 8px; color: var(--accent); font-weight: 600; text-transform: uppercase; font-size: 12px; letter-spacing: .14em; }
.eyebrow span { color: var(--muted); font-weight: 400; letter-spacing: .04em; text-transform: none; }
.hero h1 { margin: 0; font: 700 clamp(28px, 4.2vw, 48px)/1.12 var(--serif); color: var(--ink); }
.hero-author { margin: 10px 0 0; color: var(--ink); font-size: 18px; font-weight: 600; }
.hero-date { margin: 2px 0 0; color: var(--muted); font-size: 13.5px; }
.hero-sum { margin: 14px 0 0; max-width: 62ch; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.hero-tabs {
  position: relative; z-index: 1; display: grid; grid-auto-flow: column; grid-auto-columns: 132px; gap: 12px;
  overflow-x: auto; padding: 4px 2px 8px; scrollbar-width: thin; scroll-snap-type: x mandatory;
}
.hero-tab {
  scroll-snap-align: start; padding: 6px; border: 1px solid var(--line); background: var(--surface);
  border-radius: 12px; cursor: pointer; text-align: left; display: flex; flex-direction: column; gap: 6px; opacity: .78;
  transition: opacity .15s, border-color .15s, transform .15s;
}
.hero-tab img { width: 100%; aspect-ratio: 1; object-fit: contain; background: #000; border-radius: 8px; }
.hero-tab span { font-size: 12.5px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; color: var(--text); }
.hero-tab small { font-size: 11px; color: var(--muted); }
.hero-tab[aria-selected="true"] { opacity: 1; border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); background: var(--bg-soft); }
.hero-tab:hover { opacity: 1; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 0 18px; height: 44px; border-radius: 10px; font-weight: 500; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.soft { background: var(--surface); border-color: var(--line); }
.btn.line { background: transparent; border-color: var(--line); height: 42px; }
.btn.wide { width: 100%; }

/* ---------- dashboard: 1 khung ---------- */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.dash { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: 20px; padding: 16px 20px; margin-top: 8px; align-items: center; }
.dash-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.dash-main { display: flex; flex-direction: column; gap: 2px; }
.label { font-size: 13px; color: var(--muted); }
.dash-main .label { font-size: 13px; }
.dash-total { font: 700 58px/1 var(--serif); margin: 4px 0 6px; color: var(--ink); background: none; border: 0; padding: 0; text-align: left; cursor: pointer; width: fit-content; }
.dash-updated { font-size: 12.5px; color: var(--muted); }
.dash-tiers { border-left: 1px solid var(--line); padding-left: 20px; display: flex; flex-direction: column; gap: 0; }
.dash-tier {
  display: grid; grid-template-columns: auto max-content minmax(48px, 1fr) 3.2em; align-items: center; gap: 12px;
  padding: 5px 8px; margin: 0 -8px; border-radius: 8px; background: none; border: 0; cursor: pointer;
  font-size: 13.5px; text-align: left;
}
.dash-tier:hover, .dash-tier.on { background: var(--bg-soft); }
.dash-tier .dot { width: 9px; height: 9px; }
.dash-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar { height: 6px; border-radius: 999px; background: var(--bg-soft); overflow: hidden; }
.dash-tier.on .bar, .dash-tier:hover .bar { background: var(--line); }
.bar i { display: block; height: 100%; border-radius: inherit; background: var(--c); }
.dash-tier b { font: 700 15px/1 var(--serif); color: var(--ink); text-align: right; }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; background: var(--c); }

/* ---------- tìm kiếm ---------- */
.search-area { margin-top: 18px; display: flex; flex-direction: column; gap: 12px; }
.quick { display: flex; gap: 8px; align-items: flex-start; }
.search-col { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 5px; }
.search { position: relative; }
.hint { margin: 0 0 0 4px; font-size: 12.5px; color: var(--muted); }
.search svg { position: absolute; left: 13px; top: 50%; width: 18px; height: 18px; transform: translateY(-50%); fill: none; stroke: var(--muted); stroke-width: 2; stroke-linecap: round; }
.search input, .quick select, .adv select, .adv input {
  width: 100%; min-width: 0; height: 44px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); font-size: 15px; outline: none;
}
.search input { padding-left: 40px; font-size: 16px; }
.search input:focus, .adv input:focus, .adv select:focus, .quick select:focus { border-color: var(--accent); }
.quick select { width: auto; }


.adv summary { cursor: pointer; padding: 13px 18px; font-weight: 500; list-style: none; display: flex; align-items: center; gap: 8px; }
.adv summary::-webkit-details-marker { display: none; }
.adv summary::before { content: "▸"; color: var(--muted); transition: transform .15s; }
.adv[open] summary::before { transform: rotate(90deg); }
.adv summary span { font-size: 12px; color: var(--accent-ink); background: var(--accent); border-radius: 999px; padding: 0 8px; }
.adv summary span:empty { display: none; }
.adv-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 4px 18px 14px; }
.adv label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); min-width: 0; }
.adv { min-width: 0; overflow: hidden; }
.adv-tags { border-top: 1px solid var(--line); padding: 14px 18px 18px; }
.adv-tags-head { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.adv-tags-head .grow { flex: 1 1 220px; }
.tag-list {
  margin-top: 12px; max-height: 220px; overflow-y: auto; display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 6px;
}
.tag-list label {
  flex-direction: row; align-items: center; gap: 8px; color: var(--text); font-size: 13.5px;
  padding: 6px 10px; border-radius: 8px; background: var(--bg-soft); cursor: pointer;
}
.tag-list input { width: 16px; height: 16px; accent-color: var(--accent); flex: none; }
.tag-list small { margin-left: auto; color: var(--muted); }

.letters { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px; }
.letters button {
  min-width: 36px; height: 36px; padding: 0 8px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg); cursor: pointer; font-size: 14px; font-weight: 500;
}
.letters button.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.letters button:disabled { opacity: .3; cursor: default; }

/* ---------- kết quả ---------- */
.result-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin: 22px 0 6px; }
.count { color: var(--muted); margin: 0; font-size: 14px; }
.active { display: flex; flex-wrap: wrap; gap: 6px; }
.active button {
  border: 1px solid var(--line); background: var(--accent-soft); color: var(--text); border-radius: 999px;
  padding: 3px 10px; font-size: 12.5px; cursor: pointer;
}
.active button.clear { background: none; border-color: transparent; color: var(--muted); text-decoration: underline; }

.pager { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px; margin: 14px 0; }
.pager:empty { display: none; }
.pager button, .pager select {
  min-width: 38px; height: 38px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface); cursor: pointer; font-size: 14px;
}
.pager button.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.pager button:disabled { opacity: .35; cursor: default; }
.pager .gap { color: var(--muted); padding: 0 2px; }
.pager label { display: flex; align-items: center; gap: 6px; margin-left: 10px; font-size: 13px; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 22px 18px; }
@media (max-width: 1100px) { .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 820px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 560px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; } }

.card { display: flex; flex-direction: column; min-width: 0; }
.cover {
  position: relative; aspect-ratio: 1; overflow: hidden; background: #000; border-radius: 12px;
  cursor: pointer; border: 0; padding: 0; width: 100%; box-shadow: var(--shadow); transition: transform .15s;
}
.cover:hover { transform: translateY(-2px); }
/* ảnh không vuông: giữ nguyên tỉ lệ, nền là chính ảnh làm mờ */
.cover .blur { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: blur(16px) brightness(.55); transform: scale(1.2); }
.cover .img { position: relative; width: 100%; height: 100%; object-fit: contain; }
.new-tag {
  position: absolute; top: 8px; left: 8px; font-size: 11px; font-weight: 600; letter-spacing: .04em;
  padding: 2px 9px; border-radius: 999px; background: #f6c445; color: #2a1d00;
  box-shadow: 0 1px 4px rgba(0,0,0,.35);
}
.card h3 {
  margin: 10px 0 0; font-size: 15px; line-height: 1.35; font-weight: 600; color: var(--ink);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card .author { color: var(--muted); font-size: 13px; margin: 2px 0 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin-top: 8px; }
.meta-line { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.tier-tag { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--muted); }
.card .go {
  font-size: 12.5px; font-weight: 500; text-decoration: none; color: var(--accent);
  padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap;
}
.card .go:hover { background: var(--accent-soft); }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }
.empty button { background: none; border: 0; color: var(--accent); text-decoration: underline; cursor: pointer; }

/* ---------- tier ---------- */
.tiers { padding: 30px 0 40px; }
.tiers h2 { font: 700 26px/1.2 var(--serif); color: var(--ink); margin: 0 0 16px; }
.tier-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 900px) { .tier-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.tier { padding: 18px; display: flex; flex-direction: column; gap: 6px; border-top: 3px solid var(--c); }
.tier h3 { margin: 0; font: 700 20px/1.2 var(--serif); color: var(--ink); }
.tier .price { color: var(--c); font-weight: 600; }
.tier .note { color: var(--muted); font-size: 14px; margin: 0; flex: 1; }
.tier .num { font-size: 14px; margin: 6px 0 2px; }
.tier .num b { font: 700 22px var(--serif); color: var(--ink); }
.tier .see { background: none; border: 0; color: var(--muted); text-decoration: underline; cursor: pointer; padding: 2px 0; font-size: 13px; text-align: left; }

footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; text-align: center; padding: 20px 16px 40px; }

.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 20; max-width: calc(100% - 32px);
  background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow);
}
.toast.err { background: var(--accent); color: var(--accent-ink); }
.to-top {
  position: fixed; right: 18px; bottom: 18px; width: 46px; height: 46px; border-radius: 50%; border: 0;
  background: var(--accent); color: var(--accent-ink); font-size: 20px; cursor: pointer; box-shadow: var(--shadow); z-index: 5;
}

/* ---------- xem trước ---------- */
dialog {
  width: min(580px, calc(100% - 24px)); max-height: calc(100dvh - 24px); padding: 22px;
  border: 1px solid var(--line); border-radius: 18px; background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgba(10,12,20,.55); backdrop-filter: blur(3px); }
.close {
  position: absolute; top: 10px; right: 10px; width: 36px; height: 36px; border-radius: 50%;
  border: 0; background: var(--bg-soft); cursor: pointer; font-size: 15px;
}
.pv-head { display: flex; gap: 16px; align-items: flex-start; padding-right: 32px; }
.pv-head img { width: 132px; aspect-ratio: 1; object-fit: contain; background: #000; border-radius: 10px; flex: none; box-shadow: var(--shadow); }
.pv-head h3 { margin: 6px 0 2px; font: 700 22px/1.2 var(--serif); color: var(--ink); }
.pv-author { margin: 0; color: var(--muted); }
.pv-date { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.pv-sum { margin: 16px 0; }
.pv-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.pv-tags button { font-size: 12.5px; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
dialog h4 { margin: 22px 0 10px; font-size: 13px; color: var(--muted); font-weight: 500; }
.related { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.related button { padding: 0; border: 0; background: none; cursor: pointer; text-align: left; font-size: 12px; line-height: 1.3; }
.related img { width: 100%; aspect-ratio: 1; object-fit: contain; background: #000; border-radius: 8px; margin-bottom: 4px; }
.related span { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- điện thoại ---------- */
@media (max-width: 720px) {
  .top { flex-wrap: wrap; padding-top: 20px; padding-bottom: 18px; margin-bottom: 4px; gap: 14px; }
  .logo img { width: 54px; height: 54px; }
  .logo-name { font-size: 27px; }
  .icon-btn, .join { height: 40px; }
  .icon-btn.theme { width: 40px; }
  .icon-btn.random { padding: 0 12px; font-size: 13px; }
  .logo-sub { font-size: 11px; letter-spacing: .1em; }
  .top-actions { width: 100%; }
  .top-actions .join { padding: 0 12px; font-size: 13px; }
  .top-actions .theme { margin-left: auto; }
  .hero-inner { flex-direction: column; align-items: stretch; text-align: center; gap: 18px; padding-top: 8px; }
  .hero-cover { margin: 0 auto; }
  .hero-cover img { width: min(250px, 66vw); }
  .hero-sum { -webkit-line-clamp: 3; text-align: left; }
  .hero-actions { justify-content: center; }
  .hero-actions .btn { flex: 1 1 0; padding: 0 10px; font-size: 14px; }
  .hero-tabs { grid-auto-columns: 108px; }
  .dash { grid-template-columns: 1fr; gap: 14px; padding: 16px; }
  .dash-tiers { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 10px; }
  .dash-total { font-size: 46px; }
  .dash-tier { font-size: 13.5px; grid-template-columns: auto max-content minmax(36px, 1fr) 2.6em; gap: 10px; }
  .dash-tier b { font-size: 15px; }
  .hero-author { font-size: 17px; }
  .quick { flex-wrap: wrap; }
  .search-col { flex-basis: 100%; }
  .quick select { flex: 1 1 40%; min-width: 0; }
  .quick #collSel { flex-basis: 100%; }
  .adv-grid { grid-template-columns: 1fr 1fr; padding: 4px 14px 14px; }
  .adv-tags { padding: 14px; }
  .tag-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tag-list label { padding: 6px 8px; font-size: 13px; overflow-wrap: anywhere; }
  .adv-tags-head > * { flex: 1 1 100%; }
  .letters { gap: 5px; padding: 8px; }
  .letters button { min-width: 32px; height: 32px; font-size: 13px; padding: 0 6px; }
  .card h3 { font-size: 14px; }
  .card .go { padding: 3px 8px; font-size: 12px; }
  .pager label { margin-left: 0; }
  .related { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}