/* Seeding Hub — Linear/Vercel-inspired admin theme
   Neutral grays, compact density, dark default with light variant. */

:root,
[data-theme="dark"] {
  /* Surfaces */
  --bg: #08090a;
  --bg-elev: #0d0e10;
  --bg-card: #111214;
  --bg-card-2: #16181b;
  --bg-hover: #1a1c1f;
  --bg-active: #202327;
  --bg-input: #0d0e10;

  /* Borders */
  --border: #1f2125;
  --border-2: #2a2d31;
  --border-strong: #353940;

  /* Text */
  --fg: #f7f8f8;
  --fg-2: #b4b8bf;
  --fg-3: #8a8f97;
  --fg-4: #5c6066;
  --fg-disabled: #44474b;

  /* Brand — subtle indigo accent (Linear-ish), used sparingly */
  --accent: #7a82ff;
  --accent-2: #5c64e8;
  --accent-bg: #1a1d3a;
  --accent-ring: rgba(122, 130, 255, 0.35);

  /* Status — only for state, never decorative */
  --green: #4ade80;
  --green-bg: #0f2a1c;
  --green-fg: #86efac;
  --red: #ef4444;
  --red-bg: #2a1212;
  --red-fg: #fca5a5;
  --yellow: #facc15;
  --yellow-bg: #2a2410;
  --yellow-fg: #fde68a;
  --blue: #38bdf8;
  --blue-bg: #0c2436;
  --blue-fg: #7dd3fc;
  --purple: #c084fc;

  /* Shadows */
  --shadow-sm: 0 1px 0 rgba(0,0,0,0.4);
  --shadow-pop: 0 12px 32px -8px rgba(0,0,0,0.6), 0 4px 12px -4px rgba(0,0,0,0.5);
  --shadow-modal: 0 24px 64px -16px rgba(0,0,0,0.8);

  /* Type */
  --font-sans: "Geist", ui-sans-serif, -apple-system, BlinkMacSystemFont, system-ui, "Helvetica Neue", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

[data-theme="light"] {
  --bg: #fafafa;
  --bg-elev: #ffffff;
  --bg-card: #ffffff;
  --bg-card-2: #f7f7f8;
  --bg-hover: #f1f1f2;
  --bg-active: #e8e8ea;
  --bg-input: #ffffff;

  --border: #e7e7e9;
  --border-2: #d4d4d6;
  --border-strong: #b8b8bb;

  --fg: #0a0a0a;
  --fg-2: #3f3f46;
  --fg-3: #71717a;
  --fg-4: #a1a1aa;
  --fg-disabled: #d4d4d8;

  --accent: #5c64e8;
  --accent-2: #4f56d4;
  --accent-bg: #eef0ff;
  --accent-ring: rgba(92, 100, 232, 0.25);

  --green: #16a34a;
  --green-bg: #ecfdf5;
  --green-fg: #15803d;
  --red: #dc2626;
  --red-bg: #fef2f2;
  --red-fg: #b91c1c;
  --yellow: #ca8a04;
  --yellow-bg: #fef9c3;
  --yellow-fg: #a16207;
  --blue: #0284c7;
  --blue-bg: #f0f9ff;
  --blue-fg: #0369a1;

  --shadow-sm: 0 1px 0 rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-pop: 0 8px 24px -4px rgba(0,0,0,0.08), 0 2px 6px -2px rgba(0,0,0,0.04);
  --shadow-modal: 0 24px 48px -12px rgba(0,0,0,0.18);
}

/* Density */
[data-density="compact"] {
  --row-h: 32px;
  --row-py: 6px;
  --section-pad: 16px;
  --gap-section: 16px;
  --fs-base: 13px;
}
[data-density="cozy"] {
  --row-h: 40px;
  --row-py: 10px;
  --section-pad: 20px;
  --gap-section: 20px;
  --fs-base: 13.5px;
}
[data-density="comfortable"] {
  --row-h: 48px;
  --row-py: 14px;
  --section-pad: 24px;
  --gap-section: 24px;
  --fs-base: 14px;
}

* { box-sizing: border-box; }
html, body, #root {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-base, 13px);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 10px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ----- Layout primitives ----- */
.app {
  display: grid;
  grid-template-columns: auto 1fr;
  height: 100vh;
  overflow: hidden;
}
.main-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}
.content {
  flex: 1;
  overflow: auto;
  background: var(--bg);
}

/* ----- Sidebar ----- */
.sidebar {
  width: 224px;
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: width .18s ease;
  min-width: 0;
}
.sidebar.collapsed { width: 52px; }
.sidebar-head {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.brand-mark {
  width: 24px; height: 24px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  color: white;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.brand-text {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  opacity: 1;
  transition: opacity .15s;
}
.sidebar.collapsed .brand-text { opacity: 0; pointer-events: none; }
.sidebar.collapsed .nav-item-label,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .nav-item-badge { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 0; width: 32px; }
.sidebar.collapsed .nav-group { padding: 8px 10px; }
.sidebar.collapsed .sidebar-foot { padding: 8px 10px; }

.nav {
  flex: 1;
  overflow: auto;
  padding: 6px 0;
}
.nav-group { padding: 8px 8px; }
.nav-section-label {
  font-size: 11px;
  color: var(--fg-4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 8px 4px;
  font-weight: 500;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0 8px;
  border-radius: 6px;
  color: var(--fg-2);
  font-size: 13px;
  font-weight: 450;
  cursor: pointer;
  transition: background .12s, color .12s;
  width: 100%;
  text-align: left;
}
.nav-item:hover { background: var(--bg-hover); color: var(--fg); }
.nav-item.active { background: var(--bg-active); color: var(--fg); }
.nav-item .icon { width: 16px; height: 16px; flex-shrink: 0; color: var(--fg-3); }
.nav-item.active .icon { color: var(--fg); }
.nav-item-label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item-badge {
  font-size: 10.5px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  color: var(--fg-3);
  padding: 1px 6px;
  border-radius: 999px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.sidebar-foot {
  border-top: 1px solid var(--border);
  padding: 8px;
  flex-shrink: 0;
}

/* ----- Topbar ----- */
.topbar {
  height: 48px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  flex-shrink: 0;
}
.crumbs {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--fg-3); font-weight: 500;
  white-space: nowrap;
  min-width: 0;
}
.crumbs > span { white-space: nowrap; }
.crumbs .sep { color: var(--fg-4); }
.crumbs .current { color: var(--fg); }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 6px; }

/* ----- Page ----- */
.page {
  padding: 20px 24px 64px;
  max-width: 1400px;
  margin: 0 auto;
}
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.page-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin: 0 0 4px;
}
.page-sub { font-size: 13px; color: var(--fg-3); }

.section-h {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-2);
  letter-spacing: -0.005em;
  margin: 0 0 10px;
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 28px; padding: 0 10px;
  border: 1px solid var(--border-2);
  background: var(--bg-card);
  color: var(--fg);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: background .12s, border-color .12s;
}
.btn:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.btn .icon { width: 14px; height: 14px; }
.btn.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn.primary:hover { opacity: .9; }
.btn.accent { background: var(--accent-2); color: white; border-color: var(--accent-2); }
.btn.accent:hover { background: var(--accent); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--fg-2); }
.btn.ghost:hover { background: var(--bg-hover); color: var(--fg); }
.btn.danger { color: var(--red-fg); border-color: var(--border-2); }
.btn.danger:hover { background: var(--red-bg); border-color: var(--red); color: var(--red-fg); }
.btn.sm { height: 24px; padding: 0 8px; font-size: 12px; }
.btn.lg { height: 34px; padding: 0 14px; font-size: 13.5px; }
.btn.icon-only { width: 28px; padding: 0; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ----- Inputs ----- */
.input, .select {
  height: 28px;
  padding: 0 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-2);
  border-radius: 6px;
  color: var(--fg);
  outline: none;
  font-size: 13px;
  width: 100%;
}
.input:focus, .select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.input::placeholder { color: var(--fg-4); }
textarea.input { height: auto; padding: 8px 10px; resize: vertical; }

.search {
  position: relative;
  display: flex; align-items: center;
}
.search .icon { position: absolute; left: 8px; width: 14px; height: 14px; color: var(--fg-4); pointer-events: none; }
.search .input { padding-left: 28px; width: 240px; }
.search kbd {
  position: absolute; right: 6px;
  font-family: var(--font-sans);
  font-size: 10.5px; color: var(--fg-3);
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  padding: 1px 5px; border-radius: 4px;
}

/* ----- Cards ----- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.card-head {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.card-head h3 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.005em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-head > div:first-child { min-width: 0; flex: 1; }
.card-head .sub { font-size: 12px; color: var(--fg-3); margin-top: 2px; }
.card-body { padding: 16px; }
.card.flush .card-body { padding: 0; }

/* ----- KPI cards ----- */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.kpi {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px 18px;
  position: relative;
  overflow: hidden;
  min-height: 116px;
}
.kpi-label {
  font-size: 12px;
  color: var(--fg-3);
  font-weight: 500;
  margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px;
}
.kpi-value {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.kpi-delta {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px;
  font-weight: 500;
  margin-top: 6px;
  color: var(--fg-3);
}
.kpi-delta.up { color: var(--green); }
.kpi-delta.down { color: var(--red); }
.kpi-sparkline {
  position: absolute;
  inset: auto 0 0 0;
  height: 28px;
  opacity: .35;
  pointer-events: none;
  z-index: 0;
}
.kpi-label, .kpi-value, .kpi-delta { position: relative; z-index: 1; }
.kpi-delta { white-space: nowrap; }

/* ----- Tables ----- */
.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}
.table th {
  text-align: left;
  font-weight: 500;
  color: var(--fg-3);
  font-size: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card-2);
  position: sticky; top: 0; z-index: 1;
}
.table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  color: var(--fg);
}
.table tr:last-child td { border-bottom: 0; }
.table tbody tr { transition: background .08s; }
.table tbody tr:hover { background: var(--bg-hover); }
.table .mono { font-family: var(--font-mono); font-size: 12px; color: var(--fg-2); }
.table .muted { color: var(--fg-3); }
.table .num { font-variant-numeric: tabular-nums; text-align: right; }

/* ----- Badges ----- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11.5px;
  font-weight: 500;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  line-height: 1.4;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--fg-4); }
.badge.green { background: var(--green-bg); border-color: transparent; color: var(--green-fg); }
.badge.green .dot { background: var(--green); box-shadow: 0 0 6px var(--green); }
.badge.red { background: var(--red-bg); border-color: transparent; color: var(--red-fg); }
.badge.red .dot { background: var(--red); }
.badge.yellow { background: var(--yellow-bg); border-color: transparent; color: var(--yellow-fg); }
.badge.yellow .dot { background: var(--yellow); }
.badge.blue { background: var(--blue-bg); border-color: transparent; color: var(--blue-fg); }
.badge.blue .dot { background: var(--blue); }
.badge.accent { background: var(--accent-bg); border-color: transparent; color: var(--accent); }
.badge.accent .dot { background: var(--accent); }

/* ----- Live dot ----- */
.live-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green);
  position: relative;
  display: inline-block;
}
.live-dot::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  background: var(--green);
  animation: ping 1.8s cubic-bezier(0,0,0.2,1) infinite;
  opacity: .6;
}
@keyframes ping {
  0% { transform: scale(1); opacity: .6; }
  80%, 100% { transform: scale(2.4); opacity: 0; }
}

/* ----- Filter chip group ----- */
.chip-group {
  display: inline-flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 2px;
  gap: 0;
}
.chip {
  height: 22px;
  padding: 0 10px;
  border-radius: 5px;
  color: var(--fg-3);
  font-size: 12px;
  font-weight: 500;
  display: inline-flex; align-items: center; gap: 5px;
  transition: background .1s, color .1s;
}
.chip:hover { color: var(--fg); }
.chip.active { background: var(--bg-active); color: var(--fg); }

/* ----- Tabs ----- */
.tabs {
  display: flex; gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.tab {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--fg-3);
  font-weight: 500;
  border-bottom: 1px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
}
.tab:hover { color: var(--fg-2); }
.tab.active { color: var(--fg); border-bottom-color: var(--fg); }

/* ----- Avatar ----- */
.avatar {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--bg-active);
  color: var(--fg-2);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
  flex-shrink: 0;
  overflow: hidden;
}
.avatar.sm { width: 20px; height: 20px; font-size: 10px; }
.avatar.lg { width: 40px; height: 40px; font-size: 14px; }

/* ----- Platform chip ----- */
.platform-chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11.5px; font-weight: 500;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  color: var(--fg-2);
}
.platform-chip.telegram { color: #4ea4f6; background: rgba(78,164,246,0.08); border-color: rgba(78,164,246,0.18); }
.platform-chip.zalo { color: #5b9aff; background: rgba(91,154,255,0.08); border-color: rgba(91,154,255,0.18); }

/* ----- Grid helpers ----- */
.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid-2-equal { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ----- Section stack ----- */
.stack > * + * { margin-top: 16px; }

/* ----- Text utilities ----- */
.muted { color: var(--fg-3); }
.muted-2 { color: var(--fg-4); }
.mono { font-family: var(--font-mono); font-size: 12px; }
.tnum { font-variant-numeric: tabular-nums; }

/* ----- Empty state ----- */
.empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--fg-3);
}
.empty .icon { width: 32px; height: 32px; color: var(--fg-4); margin-bottom: 12px; }
.empty h4 { margin: 0 0 4px; color: var(--fg-2); font-weight: 600; font-size: 14px; }

/* ----- Divider ----- */
.hr { height: 1px; background: var(--border); margin: 12px 0; border: 0; }

/* ----- Toolbar ----- */
.toolbar {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 12px;
}
.toolbar .sep { width: 1px; height: 18px; background: var(--border); }

/* ----- Split layout ----- */
.split {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 16px;
}

/* ----- Code block ----- */
.code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--fg-2);
  overflow: auto;
  white-space: pre;
  line-height: 1.6;
}

/* ----- Modal ----- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: grid; place-items: center;
  z-index: 50;
  backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 480px;
  max-width: calc(100vw - 32px);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
}
.modal-head { padding: 18px 20px 12px; }
.modal-title { font-size: 16px; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
.modal-sub { font-size: 13px; color: var(--fg-3); margin-top: 4px; }
.modal-body { padding: 4px 20px 20px; }
.modal-foot {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 8px;
  background: var(--bg-card-2);
}

/* ----- Form ----- */
.field { margin-bottom: 12px; }
.field-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-2);
  margin-bottom: 5px;
}
.field-help { font-size: 11.5px; color: var(--fg-3); margin-top: 4px; }

/* ----- Stepper ----- */
.stepper {
  display: flex; align-items: center; gap: 0;
  margin-bottom: 20px;
}
.step {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px;
  color: var(--fg-3);
}
.step-num {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  display: grid; place-items: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--fg-3);
}
.step.active .step-num { background: var(--accent-2); border-color: var(--accent-2); color: white; }
.step.active { color: var(--fg); }
.step.done .step-num { background: var(--green); border-color: var(--green); color: var(--bg); }
.step.done { color: var(--fg-2); }
.step-bar { width: 32px; height: 1px; background: var(--border); margin: 0 10px; }
.step.done + .step-bar { background: var(--green); }

/* ----- OTP input ----- */
.otp-row {
  display: flex; gap: 8px; justify-content: center;
  margin: 18px 0;
}
.otp-cell {
  width: 44px; height: 52px;
  background: var(--bg-input);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  text-align: center;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
  font-family: var(--font-mono);
}
.otp-cell:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); outline: none; }
.otp-cell.filled { border-color: var(--border-strong); }

/* ----- Variation tabs ----- */
.var-tabs {
  display: inline-flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 2px;
}
.var-tab {
  height: 26px;
  padding: 0 12px;
  border-radius: 5px;
  color: var(--fg-3);
  font-size: 12px;
  font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
.var-tab.active { background: var(--bg-active); color: var(--fg); }
.var-tab:hover { color: var(--fg); }

/* ----- KPI row (variable cols) ----- */
.kpi-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.kpi-row-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

/* ----- Animations ----- */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.spin { animation: spin 0.8s linear infinite; }
.pulse { animation: pulse 1.6s ease-in-out infinite; }

/* ----- Spinner ----- */
.spinner {
  width: 14px; height: 14px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

/* ----- Gradient text ----- */
.gradient-text {
  background: linear-gradient(90deg, var(--fg) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ----- Toast notifications ----- */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-pop);
  font-size: 13px;
  color: var(--fg);
  min-width: 280px;
  max-width: 400px;
  pointer-events: all;
  animation: toast-in .2s ease;
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error { border-left: 3px solid var(--red); }
.toast.info { border-left: 3px solid var(--accent); }
@keyframes toast-in {
  from { transform: translateY(8px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ----- Coming Soon screen ----- */
.coming-soon {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 60vh;
  gap: 12px;
  color: var(--fg-3);
  text-align: center;
}
.coming-soon .icon { width: 40px; height: 40px; color: var(--fg-4); margin-bottom: 4px; }
.coming-soon h2 { margin: 0; font-size: 18px; color: var(--fg-2); font-weight: 600; }
.coming-soon p { margin: 0; font-size: 13px; }

/* ----- Checkbox toggle ----- */
.toggle {
  position: relative;
  width: 34px; height: 18px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
  position: absolute; inset: 0;
  background: var(--bg-card-2);
  border: 1px solid var(--border-2);
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.toggle input:checked + .toggle-track { background: var(--accent-2); border-color: var(--accent-2); }
.toggle-track::after {
  content: '';
  position: absolute;
  left: 2px; top: 50%;
  transform: translateY(-50%);
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--fg-3);
  transition: transform .15s, background .15s;
}
.toggle input:checked + .toggle-track::after {
  transform: translate(16px, -50%);
  background: white;
}

/* ----- Config card grid ----- */
.config-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* ----- Loading skeleton ----- */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-2) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: 4px;
}
@keyframes skeleton-shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}