/* ============================================================================
   VideoVault — hệ thiết kế hiện đại (dark, emerald→indigo, glass, glow)
   ============================================================================ */
:root {
  --bg: #0a0e14; --bg2: #0c111a; --card: #121a25; --card2: #0e1520;
  --line: rgba(255,255,255,.07); --line2: rgba(255,255,255,.12);
  --tx: #e8eef6; --mut: #8494a8;
  --acc: #10b981; --acc2: #34d399; --accd: #0a7d59;
  --indigo: #6366f1; --danger: #f0616d; --warn: #f5a623; --ok: #34d399;
  --radius: 16px;
  /* alias tương thích ngược cho inline style cũ */
  --dim: var(--mut); --accent: var(--acc); --accent2: var(--acc2);
  --panel: var(--card); --panel2: var(--card2); --text: var(--tx);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--tx);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px; line-height: 1.55; -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
/* nền có vệt sáng gradient rất nhẹ (AI/futuristic) */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(720px 420px at 12% -8%, rgba(16,185,129,.10), transparent 60%),
    radial-gradient(760px 460px at 100% 0%, rgba(99,102,241,.10), transparent 55%);
}
a { color: var(--acc2); text-decoration: none; }
a:hover { color: var(--acc); }

/* ---- Brand / logo ---- */
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700;
  font-size: 18px; letter-spacing: -.3px; color: var(--tx); }
.mk { width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(140deg, var(--acc), var(--indigo));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 18px -6px var(--acc); }
.mk svg { width: 21px; height: 21px; }
.mk.mkbig { width: 72px; height: 72px; border-radius: 20px; box-shadow: 0 18px 46px -12px var(--acc); }
.mk.mkbig svg { width: 40px; height: 40px; }
.wm b { background: linear-gradient(120deg, var(--acc2), var(--indigo));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ---- Topbar ---- */
.topbar { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 18px;
  padding: 12px 24px; background: rgba(10,14,20,.82); backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.logo { display: inline-flex; }
.topbar nav { display: flex; gap: 3px; flex: 1; flex-wrap: wrap; }
.topbar nav a { display: inline-flex; align-items: center; padding: 8px 13px; border-radius: 10px;
  color: var(--mut); font-size: 14px; font-weight: 500; transition: .14s; }
.topbar nav a:hover { color: var(--tx); background: rgba(255,255,255,.05); }
.topbar nav a.on { color: var(--tx); background: rgba(255,255,255,.07); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.plan-badge { background: linear-gradient(135deg, var(--acc), var(--accd)); color: #04120c;
  font-size: 11px; font-weight: 700; padding: 4px 11px; border-radius: 20px; letter-spacing: .2px; }
.who { color: var(--mut); font-size: 13px; }
@media (max-width: 680px) { .who { display: none; } .topbar { gap: 10px; padding: 10px 12px; } }

.container { max-width: 1080px; margin: 0 auto; padding: 30px 22px 70px; }
h1 { font-size: 27px; font-weight: 800; letter-spacing: -.8px; margin: 0 0 4px; }
h2 { font-size: 17px; font-weight: 700; letter-spacing: -.3px; margin: 22px 0 12px; }
.sub { color: var(--mut); margin: 0 0 22px; }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; gap: 8px; font-family: inherit;
  background: linear-gradient(135deg, var(--acc), var(--accd)); color: #04120c;
  border: 0; padding: 11px 18px; border-radius: 12px; font-weight: 700; font-size: 14.5px;
  cursor: pointer; transition: .15s; box-shadow: 0 10px 24px -10px var(--acc); }
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); color: #04120c; }
.btn-ghost { display: inline-flex; align-items: center; gap: 7px; font-family: inherit;
  background: rgba(255,255,255,.04); border: 1px solid var(--line2); color: var(--tx);
  padding: 9px 15px; border-radius: 11px; font-weight: 500; font-size: 14px; cursor: pointer; transition: .14s; }
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: var(--mut); color: var(--tx); }
.btn-ghost.on { border-color: var(--acc); color: var(--acc2); }
.btn-danger { background: rgba(240,97,109,.12); border: 1px solid rgba(240,97,109,.35);
  color: #ff9ba3; padding: 9px 15px; border-radius: 11px; font-weight: 600; cursor: pointer;
  font-family: inherit; font-size: 14px; transition: .14s; }
.btn-danger:hover { background: rgba(240,97,109,.2); }
.btn-sm { padding: 6px 12px; font-size: 12.5px; border-radius: 9px; }

/* ---- Cards / grid / stats ---- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 760px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.stat .n { font-size: 30px; font-weight: 800; letter-spacing: -1px; }
.stat .l { color: var(--mut); font-size: 13px; margin-top: 2px; }

/* ---- Usage bars ---- */
.usage { height: 8px; background: rgba(255,255,255,.06); border-radius: 6px; overflow: hidden; margin: 8px 0 5px; }
.usage-fill { height: 100%; border-radius: 6px; background: linear-gradient(90deg, var(--acc), var(--acc2)); }
.usage-fill.warn { background: linear-gradient(90deg, #d98a1a, var(--warn)); }
.usage-fill.danger { background: linear-gradient(90deg, #c0303c, var(--danger)); }
.usage-txt { font-size: 12.5px; color: var(--mut); }

/* ---- Video cards ---- */
.videos { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 18px; }
.vcard { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .16s; }
.vcard:hover { border-color: var(--line2); transform: translateY(-3px);
  box-shadow: 0 18px 40px -20px rgba(0,0,0,.8); }
.vthumb { aspect-ratio: 16/9; display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.35); position: relative; font-size: 30px;
  background: linear-gradient(135deg, #16202e, #0e1520) center/cover; }
.vthumb .badge { position: absolute; top: 9px; right: 9px; font-size: 11px; font-weight: 600;
  padding: 3px 9px; border-radius: 20px; background: rgba(0,0,0,.62); backdrop-filter: blur(4px); }
.badge.ready { color: var(--acc2); } .badge.processing, .badge.queued { color: var(--warn); }
.badge.error { color: var(--danger); } .badge.uploading { color: var(--mut); }
.vcard .body { padding: 13px 14px; }
.vcard .t { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.vcard .m { color: var(--mut); font-size: 12.5px; margin-top: 4px; }

/* ---- Forms ---- */
label { display: block; font-size: 13px; color: var(--mut); margin: 14px 0 5px; font-weight: 500; }
input[type=text], input[type=email], input[type=password], input[type=url], select, textarea {
  width: 100%; padding: 11px 13px; background: var(--card2); border: 1px solid var(--line2);
  border-radius: 11px; color: var(--tx); font-size: 14.5px; font-family: inherit; transition: .14s; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--acc);
  box-shadow: 0 0 0 3px rgba(16,185,129,.16); }
textarea { font-family: ui-monospace, Menlo, monospace; resize: vertical; }
.row { display: flex; gap: 9px; align-items: center; }

/* ---- Tables ---- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 11px 9px; border-bottom: 1px solid var(--line); font-size: 13.5px; }
th { color: var(--mut); font-weight: 600; }
code, .mono { font-family: ui-monospace, Menlo, monospace; font-size: 12.5px;
  background: rgba(255,255,255,.05); padding: 1px 6px; border-radius: 6px; }
.copybox textarea { background: rgba(255,255,255,.05); }

/* ---- Auth pages ---- */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 22px; }
.auth-box { width: 400px; max-width: 100%; }
.auth-box .card { padding: 30px; box-shadow: 0 40px 90px -40px rgba(0,0,0,.9); }
.auth-logo { display: flex; flex-direction: column; align-items: center; gap: 14px; margin-bottom: 24px; }
.auth-logo .wm-lg { font-size: 22px; font-weight: 800; letter-spacing: -.5px; }
.auth-logo .wm-lg b { background: linear-gradient(120deg, var(--acc2), var(--indigo));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ---- Alerts ---- */
.alert { padding: 11px 15px; border-radius: 12px; margin: 13px 0; font-size: 13.5px; }
.alert.err { background: rgba(240,97,109,.12); color: #ff9ba3; border: 1px solid rgba(240,97,109,.3); }
.alert.ok { background: rgba(16,185,129,.12); color: var(--acc2); border: 1px solid rgba(16,185,129,.3); }
.alert.info { background: rgba(255,255,255,.05); color: var(--mut); border: 1px solid var(--line); }

/* ---- Upload ---- */
.dropzone { border: 2px dashed var(--line2); border-radius: var(--radius); padding: 44px 20px;
  text-align: center; color: var(--mut); cursor: pointer; transition: .15s; }
.dropzone:hover, .dropzone.drag { border-color: var(--acc); background: rgba(16,185,129,.05); }
.progress { height: 10px; background: rgba(255,255,255,.06); border-radius: 6px; overflow: hidden;
  margin-top: 16px; display: none; }
.progress.on { display: block; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--acc), var(--acc2)); transition: width .2s; }

/* ---- Bar chart ---- */
.bars { display: flex; align-items: flex-end; gap: 4px; height: 170px; padding-top: 12px; }
.bar { flex: 1; border-radius: 4px 4px 0 0; min-height: 3px;
  background: linear-gradient(180deg, var(--acc2), var(--accd)); opacity: .85; transition: .12s; }
.bar:hover { opacity: 1; }

/* Rà soát responsive + khả năng truy cập, 2026-09. */
:root { color-scheme: dark; --mut: #9aa9bc; }
button, input, select, textarea { font: inherit; }
button, .btn, .btn-ghost, .btn-danger { justify-content: center; white-space: nowrap; }
button:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--acc2); outline-offset: 4px;
}
input[type=number], input[type=date], input[type=search] {
  width: 100%; padding: 11px 13px; background: var(--card2); border: 1px solid var(--line2);
  border-radius: 11px; color: var(--tx); font-family: inherit;
}
input, select, textarea { min-width: 0; }
.grid > *, .row > *, .vcard, .card { min-width: 0; }
.row { flex-wrap: wrap; }
.btn, .btn-ghost, .btn-danger { min-height: 42px; }
.topbar { justify-content: space-between; }
.topbar .logo { flex-shrink: 0; }
.topbar-right { margin-left: auto; }
.topbar-right form { margin: 0; }
.topbar nav { flex-wrap: nowrap; }
.topbar nav a { white-space: nowrap; }
.who { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-toggle { display: none; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; background: var(--card); padding: 12px; }
.skip-link:focus { top: 10px; }
.hero .mkbig { margin: 0 auto; }
.vcard { color: var(--tx); }
.vcard:hover { color: var(--tx); }
.vcard .t { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-height: 1.5; min-height: 3em; }
.vthumb { background-image: radial-gradient(ellipse at 25% 20%, rgba(16,185,129,.10), transparent 70%); }
.auth-box h1 { font-size: 23px; letter-spacing: -.5px; margin-bottom: 7px; }
.auth-box .sub { font-size: 14px; margin-bottom: 22px; }
.upload-symbol { display: grid; place-items: center; width: 54px; height: 54px; margin: 0 auto 18px;
  color: var(--acc2); background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.24); border-radius: 16px; font-size: 30px; }
.dropzone.is-busy { cursor: progress; opacity: .65; }
#chosenFile { overflow-wrap: anywhere; }
#uploadMsg { min-height: 24px; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll table { min-width: 520px; }
.page-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; margin-bottom: 24px; }
.page-heading .sub { margin: 4px 0 0; }
.library-tools { display: flex; gap: 10px; margin: 24px 0 18px; max-width: 560px; }
.library-tools input { flex: 1; }
.pagination { display: flex; align-items: center; justify-content: space-between; margin-top: 24px; gap: 12px; }
.empty-state { text-align: center; padding: 48px 24px; }
.empty-state h2 { margin-top: 0; }
@media (max-width: 1180px) {
  .dashboard .topbar { flex-wrap: wrap; gap: 12px; }
  .dashboard .topbar nav { order: 4; flex-basis: 100%; overflow-x: auto; }
}
@media (max-width: 680px) {
  .topbar { flex-wrap: wrap; gap: 10px; }
  .topbar > .topbar-right { gap: 8px; }
  body:not(.dashboard) .topbar > .topbar-right { flex: 1 0 100%; justify-content: space-between; }
  .dashboard .topbar { align-items: center; }
  .dashboard .topbar nav { display: none; flex-wrap: wrap; padding-top: 6px; border-top: 1px solid var(--line); }
  .dashboard .topbar nav.is-open { display: flex; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .dashboard .topbar-right { margin-left: 0; }
  .dashboard .topbar-right .plan-badge { display: none; }
  .container { padding: 24px 16px 48px; }
  h1 { font-size: 25px; }
  .card { padding: 18px; }
  .auth-wrap { padding: 24px 16px; }
  .auth-box .card { padding: 24px; }
  input[type=text], input[type=email], input[type=password], input[type=url], input[type=number], input[type=date], select, textarea { font-size: 16px; }
  .dropzone { padding: 32px 16px; }
  .hero { padding-top: 40px !important; }
  .hero h1 { font-size: 36px !important; line-height: 1.16 !important; }
  .hero p { font-size: 16px !important; }
  .page-heading > .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}