/* dub-server — 1 file CSS duy nhất, không CDN, không framework, không JS.
   Token màu định nghĩa trong :root (sáng) + @media (prefers-color-scheme: dark) (tối). */

:root {
  --color-bg: #f4f5f8;
  --color-bg-elevated: #ffffff;
  --color-bg-sunken: #eceef2;
  --color-border: #dde1e8;
  --color-text: #171a21;
  --color-text-muted: #656d7c;
  --color-accent: #4338ca;
  --color-accent-hover: #362da3;
  --color-accent-contrast: #ffffff;
  --color-accent-soft: #eef0fd;

  --color-pending-bg: #eceef1;   --color-pending-fg: #565f6e;
  --color-queued-bg: #e3e8f7;    --color-queued-fg: #3949a3;
  --color-claimed-bg: #fdecd2;   --color-claimed-fg: #92600a;
  --color-running-bg: #dbeafe;   --color-running-fg: #1d4ed8;
  --color-done-bg: #dcf5e3;      --color-done-fg: #157347;
  --color-failed-bg: #fbdfdf;    --color-failed-fg: #b3261e;
  --color-canceled-bg: #e6e7eb;  --color-canceled-fg: #4b5160;
  --color-manual-bg: #f1e2f9;    --color-manual-fg: #7e22a8;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;

  --radius-card: 8px;
  --radius-control: 6px;

  --sidebar-w: 220px;
  --content-max: 1360px;

  --shadow-card: 0 1px 2px rgba(20, 24, 34, 0.06), 0 1px 1px rgba(20, 24, 34, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14161b;
    --color-bg-elevated: #1c1f26;
    --color-bg-sunken: #101216;
    --color-border: #2b2f3a;
    --color-text: #e7e9ee;
    --color-text-muted: #9298a6;
    --color-accent: #8b87f7;
    --color-accent-hover: #a5a1ff;
    --color-accent-contrast: #131328;
    --color-accent-soft: #24243f;

    --color-pending-bg: #2a2d35;   --color-pending-fg: #b7bcc7;
    --color-queued-bg: #262c47;    --color-queued-fg: #a9b3ec;
    --color-claimed-bg: #3d2f13;   --color-claimed-fg: #f0b850;
    --color-running-bg: #142a4d;   --color-running-fg: #7cb0ff;
    --color-done-bg: #12331f;      --color-done-fg: #5fd08c;
    --color-failed-bg: #3a1616;    --color-failed-fg: #f18f8a;
    --color-canceled-bg: #262832;  --color-canceled-fg: #a2a7b5;
    --color-manual-bg: #331a3d;    --color-manual-fg: #d29ef0;

    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.35), 0 1px 1px rgba(0, 0, 0, 0.2);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden; /* body không bao giờ cuộn ngang */
}
a { color: var(--color-accent); }
h1, h2, h3 { margin-top: 0; font-weight: 650; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; }
hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-4) 0; }

/* ---------- khung sidebar + nội dung ---------- */
.shell { display: flex; min-height: 100vh; }

.sidebar {
  flex: 0 0 var(--sidebar-w);
  width: var(--sidebar-w);
  background: var(--color-bg-elevated);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  gap: var(--space-6);
  position: sticky;
  top: 0;
  align-self: flex-start;
  height: 100vh;
}
.sidebar-brand {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text);
  text-decoration: none;
}
.sidebar-brand span { color: var(--color-accent); }
.sidebar-nav { display: flex; flex-direction: column; gap: var(--space-1); flex: 1; }
.sidebar-nav a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-control);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 550;
}
.sidebar-nav a:hover { background: var(--color-bg-sunken); color: var(--color-text); }
.sidebar-nav a.active { background: var(--color-accent-soft); color: var(--color-accent); }
.sidebar-foot { border-top: 1px solid var(--color-border); padding-top: var(--space-3); }
.sidebar-foot .btn { width: 100%; }

.content { flex: 1; min-width: 0; }
.content-inner { max-width: var(--content-max); margin: 0 auto; padding: var(--space-6); }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.page-header h1 { font-size: 20px; }
.page-header p.page-sub { margin: var(--space-1) 0 0; color: var(--color-text-muted); }
.page-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

@media (max-width: 900px) {
  .shell { flex-direction: column; }
  .sidebar {
    position: static;
    width: auto;
    height: auto;
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
    gap: var(--space-4);
  }
  .sidebar-nav { flex-direction: row; }
  .sidebar-foot { border-top: none; padding-top: 0; }
  .content-inner { padding: var(--space-4); }
}

/* ---------- thẻ ---------- */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-6);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4) 0;
}
.card-header h2 { font-size: 15px; margin: 0 0 var(--space-3); }
.card-body { padding: 0 var(--space-4) var(--space-4); }
.card-body.tight { padding-top: var(--space-4); }

/* ---------- KPI ---------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
@media (max-width: 900px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
.kpi {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
}
.kpi-label { color: var(--color-text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.kpi-value { font-size: 26px; font-weight: 700; margin-top: var(--space-1); }
.kpi-split { display: flex; gap: var(--space-3); margin-top: var(--space-1); flex-wrap: wrap; }
.kpi-split b { font-size: 18px; }
.kpi-split span { display: block; color: var(--color-text-muted); font-size: 11px; }

/* ---------- bảng ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-card); border: 1px solid var(--color-border); }
table.table { width: 100%; border-collapse: collapse; background: var(--color-bg-elevated); font-size: 13px; }
table.table thead th {
  position: sticky;
  top: 0;
  background: var(--color-bg-sunken);
  color: var(--color-text-muted);
  text-align: left;
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
table.table td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
table.table tbody tr:last-child td { border-bottom: none; }
table.table tbody tr:nth-child(even) { background: var(--color-bg-sunken); }
table.table td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.table td.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; }
.truncate { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.muted { color: var(--color-text-muted); }

/* ---------- badge trạng thái ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 9px;
  border-radius: var(--radius-control);
  font-size: 11px;
  font-weight: 650;
  line-height: 1.7;
  white-space: nowrap;
}
.badge-pending  { background: var(--color-pending-bg);  color: var(--color-pending-fg); }
.badge-queued   { background: var(--color-queued-bg);   color: var(--color-queued-fg); }
.badge-claimed  { background: var(--color-claimed-bg);  color: var(--color-claimed-fg); }
.badge-running  { background: var(--color-running-bg);  color: var(--color-running-fg); animation: badge-pulse 1.6s ease-in-out infinite; }
.badge-done     { background: var(--color-done-bg);     color: var(--color-done-fg); }
.badge-failed   { background: var(--color-failed-bg);   color: var(--color-failed-fg); }
.badge-canceled { background: var(--color-canceled-bg); color: var(--color-canceled-fg); }
.badge-needs_manual_check { background: var(--color-manual-bg); color: var(--color-manual-fg); }
/* event level */
.badge-info  { background: var(--color-queued-bg);  color: var(--color-queued-fg); }
.badge-warn  { background: var(--color-claimed-bg); color: var(--color-claimed-fg); }
.badge-error { background: var(--color-failed-bg);  color: var(--color-failed-fg); }
/* worker / channel trạng thái dùng lại bảng màu status */
.badge-active   { background: var(--color-running-bg); color: var(--color-running-fg); } /* job đang active */
.badge-off      { background: var(--color-canceled-bg);color: var(--color-canceled-fg); }
.badge-paused   { background: var(--color-canceled-bg);color: var(--color-canceled-fg); }
.badge-verified { background: var(--color-done-bg);    color: var(--color-done-fg); }
.badge-unverified { background: var(--color-pending-bg); color: var(--color-pending-fg); }
.badge-verify-error { background: var(--color-failed-bg); color: var(--color-failed-fg); }

@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

/* ---------- progress ---------- */
.progress { display: flex; align-items: center; gap: var(--space-2); min-width: 120px; }
.progress-track {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--color-bg-sunken);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.progress-fill { height: 100%; background: var(--color-accent); border-radius: 999px; }
.progress-label { font-size: 12px; color: var(--color-text-muted); font-variant-numeric: tabular-nums; width: 34px; text-align: right; }

/* ---------- nút ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 7px 14px;
  border-radius: var(--radius-control);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--color-bg-sunken); }
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-contrast); }
.btn-primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-bg-sunken); color: var(--color-text); }
.btn-danger { background: transparent; border-color: var(--color-failed-fg); color: var(--color-failed-fg); }
.btn-danger:hover { background: var(--color-failed-bg); }
.btn-sm { padding: 3px 9px; font-size: 12px; border-radius: 5px; }
.actions { display: flex; gap: var(--space-1); flex-wrap: wrap; white-space: nowrap; }
.inline-form { display: inline; margin: 0; }

/* ---------- trạng thái rỗng ---------- */
.empty {
  padding: var(--space-8) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
}
.empty-title { color: var(--color-text); font-weight: 600; margin-bottom: var(--space-1); }
.empty-hint { font-size: 12px; }

/* ---------- flash ---------- */
.flash { padding: var(--space-3) var(--space-4); border-radius: var(--radius-control); margin-bottom: var(--space-4); font-size: 13px; }
.flash-ok { background: var(--color-done-bg); color: var(--color-done-fg); border: 1px solid var(--color-done-fg); }
.flash-err { background: var(--color-failed-bg); color: var(--color-failed-fg); border: 1px solid var(--color-failed-fg); }

/* ---------- form ---------- */
.form-grid { display: grid; grid-template-columns: 220px 1fr; gap: var(--space-3) var(--space-4); align-items: start; }
.form-grid label { padding-top: 7px; color: var(--color-text-muted); font-weight: 600; }
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  font: inherit;
  background: var(--color-bg-elevated);
  color: var(--color-text);
}
.form-grid input[type="file"] { padding: 4px; }
.form-grid .form-actions { grid-column: 2; display: flex; gap: var(--space-2); }
.form-hint { grid-column: 2; margin: -4px 0 0; font-size: 12px; color: var(--color-text-muted); }
.field-sep { grid-column: 1 / -1; border-top: 1px solid var(--color-border); margin: var(--space-2) 0; }
@media (max-width: 900px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-grid label { padding-top: 0; }
  .form-grid .form-actions, .form-hint { grid-column: 1; }
}

/* ---------- chip (tag) ---------- */
.chip-list { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.chip {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
}

/* ---------- avatar kênh ---------- */
.avatar { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; background: var(--color-bg-sunken); flex: none; }
.avatar-fallback {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--color-accent-soft); color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; flex: none;
}
.avatar-lg, .avatar-fallback-lg { width: 88px; height: 88px; font-size: 28px; }
.avatar-sm, .avatar-fallback-sm { width: 20px; height: 20px; font-size: 10px; }

/* ---------- lưới thẻ kênh ---------- */
.channel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-4); margin-bottom: var(--space-6); }
.channel-card { background: var(--color-bg-elevated); border: 1px solid var(--color-border); border-radius: var(--radius-card); box-shadow: var(--shadow-card); padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); }
.channel-card-head { display: flex; gap: var(--space-3); align-items: center; }
.channel-card-head .avatar, .channel-card-head .avatar-fallback { width: 56px; height: 56px; font-size: 20px; }
.channel-card-name { font-weight: 650; }
.channel-card-id { color: var(--color-text-muted); font-size: 12px; }
.channel-card-stats { display: flex; gap: var(--space-4); font-size: 12px; color: var(--color-text-muted); }
.channel-card-badges { display: flex; gap: var(--space-1); flex-wrap: wrap; }
.channel-card-note { font-size: 12px; color: var(--color-text-muted); }
.channel-card-actions { display: flex; gap: var(--space-1); flex-wrap: wrap; margin-top: auto; }

/* ---------- thumbnail preview job ---------- */
.thumb-preview { width: 160px; max-width: 100%; border-radius: var(--radius-control); border: 1px solid var(--color-border); display: block; }

/* ---------- filter (log) ---------- */
.filter-bar { display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap; margin-bottom: var(--space-4); }
.filter-bar select, .filter-bar input { padding: 6px 8px; border: 1px solid var(--color-border); border-radius: var(--radius-control); background: var(--color-bg-elevated); color: var(--color-text); font: inherit; }

/* ---------- chọn kênh dạng thẻ (thay <select> để hiện được ảnh, thuần CSS không JS) ---------- */
.channel-picker { grid-column: 2; display: flex; flex-wrap: wrap; gap: var(--space-2); }
.channel-pick { cursor: pointer; }
.channel-pick input { position: absolute; opacity: 0; width: 0; height: 0; }
.channel-pick-card {
  display: flex; align-items: center; gap: var(--space-2);
  padding: 6px 12px 6px 6px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg-elevated);
  font-size: 13px;
  font-weight: 600;
}
.channel-pick input:checked + .channel-pick-card {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent);
}
.channel-pick input:focus-visible + .channel-pick-card { outline: 2px solid var(--color-accent); outline-offset: 1px; }
@media (max-width: 900px) { .channel-picker { grid-column: 1; } }

/* ---------- login ---------- */
.login-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--color-bg); padding: var(--space-4); }
.login-card { width: 340px; max-width: 100%; padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); }
.login-card h1 { font-size: 18px; text-align: center; }
.login-card .btn-primary { margin-top: var(--space-2); }