:root {
  --paper: #F3F5F8;
  --panel: #FFFFFF;
  --side: #E7EBF0;
  --ink: #18212D;
  --ink-2: #485364;
  --ink-3: #7A8494;
  --line: #D8DEE6;
  --line-2: #E8ECF1;
  --marker: #E0322B;
  --marker-wash: #FDECEA;
  --ok: #1F8A5B;
  --ok-wash: #E6F4EC;
  --warn: #A9520A;
  --warn-wash: #FDF1E3;
  --ig: #B8327E;
  --fb: #1B66D1;
  --focus: #2F6FED;
  --radius: 8px;
  --font: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
svg { width: 18px; height: 18px; flex: none; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }

/* ---------------- Khung ---------------- */
.app { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.side {
  background: var(--side);
  border-right: 1px solid var(--line);
  padding: 20px 14px 16px;
  display: flex; flex-direction: column; gap: 10px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.main { min-width: 0; padding: 24px 28px 120px; }

.brand { display: flex; gap: 10px; align-items: center; padding: 0 6px 14px; border-bottom: 1px solid var(--line); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 8px; background: var(--ink); position: relative; flex: none;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 5px;
  background: var(--marker);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M18 54c7 4 14 11 20 20 3-6 9-19 19-32 9-12 18-20 27-26' fill='none' stroke='black' stroke-width='11' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M18 54c7 4 14 11 20 20 3-6 9-19 19-32 9-12 18-20 27-26' fill='none' stroke='black' stroke-width='11' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
}
.brand-name { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.brand-sub { font-size: 12px; color: var(--ink-3); }

.side-title { font-size: 12px; font-weight: 600; color: var(--ink-3); margin: 10px 6px 0; }
.channel-list { display: flex; flex-direction: column; gap: 2px; }
.ch-item {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 7px; border: 0; background: none; text-align: left; cursor: pointer;
  color: var(--ink-2);
}
.ch-item:hover { background: rgba(24, 33, 45, .06); color: var(--ink); }
.ch-item[aria-current="true"] { background: var(--panel); color: var(--ink); box-shadow: 0 0 0 1px var(--line); }
.ch-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ch-count { font-size: 12px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.ch-empty { font-size: 13px; color: var(--ink-3); padding: 4px 10px; }

.add-channel { display: flex; gap: 6px; padding: 4px 0 0; }
.add-channel input { flex: 1; min-width: 0; }

.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: 2px; padding-top: 12px; border-top: 1px solid var(--line); }
.side-link {
  display: flex; gap: 9px; align-items: center; border: 0; background: none; padding: 8px 10px;
  border-radius: 7px; cursor: pointer; color: var(--ink-2); text-align: left;
}
.side-link:hover { background: rgba(24, 33, 45, .06); color: var(--ink); }
.login-pills { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 10px 0; }
.pill { font-size: 12px; padding: 2px 8px; border-radius: 99px; border: 1px solid var(--line); background: var(--panel); color: var(--ink-2); }
.pill.on { border-color: #B9DEC9; background: var(--ok-wash); color: var(--ok); }
.pill.off { border-color: #F2CFA9; background: var(--warn-wash); color: var(--warn); }

/* ---------------- Nut & o nhap ---------------- */
input[type="text"], input[type="number"], input[type="search"], input[type="password"], select, textarea {
  border: 1px solid var(--line); background: var(--panel); border-radius: 7px; padding: 7px 10px;
  min-height: 36px;
}
input::placeholder, textarea::placeholder { color: var(--ink-3); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 36px; padding: 0 13px; border-radius: 7px; border: 1px solid var(--line);
  background: var(--panel); cursor: pointer; font-weight: 500; white-space: nowrap;
}
.btn:hover { border-color: #B8C1CD; }
a.btn { text-decoration: none; color: inherit; }
.btn:disabled { opacity: .55; cursor: default; }
.btn-ink { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-ink:hover { background: #253142; border-color: #253142; }
.btn-ghost { background: none; border-color: transparent; color: var(--ink-2); }
.btn-ghost:hover { background: rgba(24, 33, 45, .06); border-color: transparent; }
.btn-danger { color: #B42318; }
.btn-icon { width: 36px; padding: 0; }
.btn-sm { min-height: 30px; padding: 0 10px; font-size: 13px; }
.btn-sm.btn-icon { width: 30px; }
.btn svg { width: 16px; height: 16px; }

/* ---------------- Dau trang kenh ---------------- */
.ch-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.ch-title { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; margin: 0; line-height: 1.2; }
.ch-path { font-size: 12.5px; color: var(--ink-3); margin-top: 4px; word-break: break-all; }
.ch-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.ch-stats { display: flex; gap: 22px; margin-top: 12px; color: var(--ink-2); font-size: 13px; }
.ch-stats b { color: var(--ink); font-size: 15px; font-variant-numeric: tabular-nums; margin-right: 4px; }

/* ---------------- Kenh mau ---------------- */
.sources {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin-bottom: 18px;
}
.sources-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.sources-head h3 { margin: 0; font-size: 15px; }
.tabs { display: inline-flex; gap: 4px; }
.tab {
  border: 0; background: none; padding: 6px 12px; border-radius: 7px; cursor: pointer;
  font-weight: 600; font-size: 15px; color: var(--ink-3); display: inline-flex; align-items: center; gap: 7px;
}
.tab:hover { color: var(--ink); background: rgba(24, 33, 45, .05); }
.tab[aria-selected="true"] { color: var(--ink); background: var(--side); }
.tab-n { font-size: 12px; font-weight: 600; background: var(--panel); border: 1px solid var(--line); border-radius: 99px; padding: 0 7px; color: var(--ink-2); }
.plat.kw { background: var(--ink); }
.plat.kw svg { width: 16px; height: 16px; }
.kw-meta { display: flex; gap: 6px; align-items: center; }
.kw-plat { font-size: 11px; font-weight: 600; padding: 0 6px; border-radius: 4px; color: #fff; }
.kw-plat.facebook { background: var(--fb); }
.kw-plat.instagram { background: var(--ig); }
.kw-plat.err { background: var(--warn-wash); color: var(--warn); }
.kw-plats { display: inline-flex; gap: 6px; }
.chip-check {
  display: inline-flex; align-items: center; gap: 7px; min-height: 36px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 7px; background: var(--panel); cursor: pointer; font-weight: 500;
}
.chip-check input { width: 15px; height: 15px; accent-color: var(--ink); }
.chip-check:has(input:checked) { border-color: var(--ink); }
.kw-strict { margin-top: 10px; font-size: 13.5px; }
.kw-tag { color: var(--ink-2); background: #FFF6C7; border-radius: 4px; padding: 0 6px; }
mark { background: #FFEB80; color: inherit; border-radius: 3px; padding: 0 1px; }
tr.is-used mark { background: #F1E7B5; }
.src-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 8px; }
.src {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px; align-items: center;
  border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 6px 8px 10px; background: #FBFCFD;
}
.src-pick {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; align-items: center;
  border: 0; background: none; padding: 0; text-align: left; cursor: pointer; min-width: 0;
}
.src:hover { border-color: var(--line); }
.src[aria-pressed="true"] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); background: var(--panel); }
.plat { width: 30px; height: 30px; border-radius: 7px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 12px; }
.plat.instagram { background: var(--ig); }
.plat.facebook { background: var(--fb); }
.src-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.src-meta { font-size: 12px; color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.src-meta.err { color: var(--warn); }
.src-btns { display: flex; gap: 2px; }
.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.add-src { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.add-src input { flex: 1 1 320px; }
.add-src select { flex: 0 0 auto; }
.hint { font-size: 12.5px; color: var(--ink-3); margin: 8px 0 0; }

/* ---------------- Bo loc ---------------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 10px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); padding: 2px; }
.seg button { border: 0; background: none; padding: 5px 11px; border-radius: 5px; cursor: pointer; color: var(--ink-2); font-weight: 500; }
.seg button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.filters .grow { flex: 1 1 200px; }
.result-line { font-size: 13px; color: var(--ink-3); margin: 0 0 8px; }

/* ---------------- Bang bai dang ---------------- */
.table-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
table.posts { width: 100%; border-collapse: collapse; table-layout: fixed; }
.posts th {
  text-align: left; font-size: 12.5px; font-weight: 600; color: var(--ink-3); padding: 9px 12px;
  background: #FAFBFC; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2;
}
.posts td { padding: 10px 12px; border-bottom: 1px solid var(--line-2); vertical-align: middle; }
.posts tr:last-child td { border-bottom: 0; }
.posts tr.is-selected td { background: #F2F6FD; }
.col-sel { width: 44px; }
.col-thumb { width: 116px; }
.col-stats { width: 150px; }
.col-used { width: 128px; }
.col-dl { width: 150px; }
.col-sel input, .used-box input { width: 17px; height: 17px; accent-color: var(--ink); cursor: pointer; }

.thumb {
  position: relative; width: 92px; height: 92px; border-radius: 7px; overflow: hidden; background: var(--line-2);
  border: 0; padding: 0; cursor: zoom-in; display: block;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .noimg { display: grid; place-items: center; height: 100%; font-size: 11px; color: var(--ink-3); padding: 6px; text-align: center; }
.thumb .badge {
  position: absolute; right: 5px; top: 5px; display: inline-flex; align-items: center; gap: 3px;
  background: rgba(16, 22, 30, .72); color: #fff; font-size: 11px; font-weight: 600; padding: 2px 6px; border-radius: 5px;
}
.thumb .badge svg { width: 12px; height: 12px; }
/* Dau tick but long khi bai da dung */
.thumb .mark { position: absolute; inset: 0; display: none; place-items: center; background: rgba(255, 255, 255, .38); }
.thumb .mark svg { width: 78%; height: 78%; color: var(--marker); transform: rotate(-6deg); filter: drop-shadow(0 1px 0 rgba(255,255,255,.6)); }
tr.is-used .thumb .mark { display: grid; }
tr.is-used .thumb img { filter: grayscale(.55) contrast(.9); }
tr.is-used .cap-text, tr.is-used .cap-meta, tr.is-used .stats { opacity: .55; }
@media (prefers-reduced-motion: no-preference) {
  tr.just-used .thumb .mark svg { animation: draw .35s ease-out; }
  @keyframes draw { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
}

.cap { cursor: pointer; }
.cap-text {
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  white-space: pre-line; color: var(--ink); max-width: 72ch;
}
.cap-text.cap-none { color: var(--ink-3); font-style: italic; }
.cap-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 6px; font-size: 12.5px; color: var(--ink-3); }
.cap-meta a { color: var(--ink-2); display: inline-flex; gap: 4px; align-items: center; text-decoration: none; }
.cap-meta a:hover { color: var(--focus); }
.cap-meta svg { width: 13px; height: 13px; }
.cap-meta .linkbtn { display: inline-flex; gap: 3px; align-items: center; }
.src-tag { font-weight: 600; }
.src-tag.instagram { color: var(--ig); }
.src-tag.facebook { color: var(--fb); }

.stats { display: flex; flex-direction: column; gap: 3px; font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.stats span { display: inline-flex; gap: 6px; align-items: center; }
.stats svg { width: 14px; height: 14px; color: var(--ink-3); }

.used-box { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; padding: 4px 0; }
.used-box .lbl { font-size: 13px; color: var(--ink-3); }
tr.is-used .used-box .lbl { color: var(--marker); font-weight: 600; }
tr.is-used .used-box input { accent-color: var(--marker); }

.dl { display: flex; flex-direction: column; gap: 4px; align-items: flex-start; }
.dl-state { font-size: 12.5px; display: inline-flex; gap: 6px; align-items: center; }
.dl-state.ok { color: var(--ok); font-weight: 600; }
.dl-state.part { color: var(--warn); font-weight: 600; }
.dl-state.busy { color: var(--ink-2); }
.dl-links { display: flex; gap: 10px; font-size: 12.5px; }
.linkbtn { border: 0; background: none; padding: 0; color: var(--ink-2); cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.linkbtn:hover { color: var(--focus); }
.dot-spin { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--line); border-top-color: var(--ink); animation: spin .8s linear infinite; }

.pager { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 12px; color: var(--ink-3); font-size: 13px; }
.pager-btns { display: flex; gap: 6px; }

/* ---------------- Trang trong ---------------- */
.empty {
  border: 1px dashed #C5CDD8; border-radius: 10px; padding: 36px 24px; text-align: center; color: var(--ink-2); background: var(--panel);
}
.empty h3 { margin: 0 0 6px; color: var(--ink); font-size: 17px; }
.empty p { margin: 0 auto; max-width: 52ch; }
.empty .btn { margin-top: 14px; }
.welcome { max-width: 640px; margin: 8vh auto 0; }
.welcome h1 { font-size: 30px; letter-spacing: -0.02em; margin: 0 0 8px; line-height: 1.2; }
.welcome p { color: var(--ink-2); margin: 0 0 18px; }
.steps { margin: 0 0 22px; padding-left: 20px; color: var(--ink-2); }
.steps li { margin: 4px 0; }
.welcome form { display: flex; gap: 8px; }
.welcome input { flex: 1; min-height: 42px; font-size: 15px; }
.welcome .btn { min-height: 42px; }

/* ---------------- Thanh chon nhieu ---------------- */
.selbar {
  position: fixed; left: calc(50% + 130px); transform: translateX(-50%); bottom: 20px; z-index: 20;
  display: flex; align-items: center; gap: 8px; padding: 8px 8px 8px 16px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 10px 30px rgba(24, 33, 45, .16);
}
#sel-count { font-weight: 600; margin-right: 6px; white-space: nowrap; }

/* ---------------- Hang doi ---------------- */
.tray {
  position: fixed; right: 18px; bottom: 18px; z-index: 30; width: 340px; max-height: 50vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 10px 30px rgba(24, 33, 45, .16);
}
.tray-head { display: flex; justify-content: space-between; align-items: center; padding: 10px 10px 8px 14px; border-bottom: 1px solid var(--line-2); position: sticky; top: 0; background: var(--panel); }
.tray-head b { font-size: 13.5px; }
.job { padding: 9px 14px; border-bottom: 1px solid var(--line-2); display: grid; grid-template-columns: 14px 1fr auto; gap: 10px; align-items: start; }
.job:last-child { border-bottom: 0; }
.job-title { font-weight: 600; font-size: 13px; }
.job-msg { font-size: 12.5px; color: var(--ink-2); white-space: pre-line; }
.job.error .job-msg { color: var(--warn); }
.job-ico { margin-top: 4px; width: 12px; height: 12px; border-radius: 50%; }
.job.done .job-ico { background: var(--ok); }
.job.error .job-ico { background: var(--warn); }
.job.cancelled .job-ico { background: var(--ink-3); }
.job.queued .job-ico { border: 2px solid var(--ink-3); }
.job.running .job-ico { border: 2px solid var(--line); border-top-color: var(--ink); animation: spin .8s linear infinite; }

.toast {
  position: fixed; left: 50%; top: 18px; transform: translateX(-50%); z-index: 60;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; max-width: 560px; font-size: 13.5px;
  box-shadow: 0 10px 30px rgba(24, 33, 45, .25);
}
.toast.err { background: #7A2E0E; }

/* ---------------- Modal ---------------- */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 20px; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(16, 22, 30, .5); }
.modal-box {
  position: relative; background: var(--panel); border-radius: 12px; width: min(980px, 100%); max-height: calc(100vh - 40px);
  overflow: auto; box-shadow: 0 24px 60px rgba(0, 0, 0, .3);
}
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px 12px 20px; border-bottom: 1px solid var(--line-2); position: sticky; top: 0; background: var(--panel); z-index: 1; }
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-body { padding: 18px 20px 20px; }

.detail { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 22px; }
.gallery { display: grid; gap: 8px; grid-template-columns: repeat(2, 1fr); align-content: start; }
.gallery.single { grid-template-columns: 1fr; }
.gallery img, .gallery video { width: 100%; border-radius: 8px; background: var(--line-2); display: block; max-height: 520px; object-fit: contain; }
.gallery .note { grid-column: 1 / -1; font-size: 12.5px; color: var(--ink-3); }
.detail-cap { white-space: pre-wrap; background: #FAFBFC; border: 1px solid var(--line-2); border-radius: 8px; padding: 12px 14px; max-height: 360px; overflow: auto; margin: 0 0 12px; font-family: inherit; }
.detail-meta { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
.detail-meta dt { color: var(--ink-3); }
.detail-meta dd { margin: 0; word-break: break-all; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.notes { font-size: 12.5px; color: var(--warn); background: var(--warn-wash); border-radius: 7px; padding: 8px 10px; margin-bottom: 12px; }

.form-grid { display: grid; gap: 16px; }
.field label { display: block; font-weight: 600; margin-bottom: 5px; }
.field .help { font-size: 12.5px; color: var(--ink-3); margin-top: 4px; }
.field input[type="text"], .field input[type="number"], .field input[type="password"], .field input[type="file"], .field select { width: 100%; }
.check { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.check input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--ink); }
.login-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; padding: 10px 12px; border: 1px solid var(--line-2); border-radius: 8px; }
.login-row + .login-row { margin-top: 8px; }
.settings-section { border-top: 1px solid var(--line-2); padding-top: 16px; }
.settings-section h4 { margin: 0 0 10px; font-size: 14px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 20px; border-top: 1px solid var(--line-2); position: sticky; bottom: 0; background: var(--panel); }

/* ---------------- Man hinh nho ---------------- */
@media (max-width: 1100px) {
  .col-stats { width: 110px; }
  .col-dl { width: 130px; }
}
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .side { position: static; height: auto; }
  .main { padding: 18px 16px 120px; }
  .ch-head { flex-direction: column; }
  .ch-stats { gap: 14px; }
  .col-stats, .posts td.stats-cell { display: none; }
  .detail, .row-2 { grid-template-columns: 1fr; }
  .selbar { left: 50%; transform: translateX(-50%); }
  .tray { width: calc(100% - 36px); }
}
@media (prefers-reduced-motion: reduce) {
  .spin, .dot-spin, .job.running .job-ico { animation: none; }
}

/* ---------------- Cổng đăng nhập ---------------- */
.login-gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(400px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: grid;
  gap: 12px;
}
.login-card h1 { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.login-card .field { display: grid; gap: 6px; }
.login-card label { font-weight: 600; font-size: 13px; }
.login-card input { width: 100%; }
.login-card .btn { justify-self: start; }
body:not(.authed) .app,
body:not(.authed) #selbar,
body:not(.authed) #tray,
body:not(.authed) #modal { display: none !important; }
body.authed #login-gate { display: none; }