/* SMLE Vault — clinical-density design system. Light theme. */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
table { border-collapse: collapse; }
hr { border: none; border-top: 1px solid var(--color-border); margin: 16px 0; }

/* ---------- Tokens ---------- */
:root {
  --color-primary:      #2563eb;
  --color-primary-h:    #1d4ed8;
  --color-primary-50:   #eff6ff;
  --color-primary-100:  #dbeafe;
  --color-primary-200:  #bfdbfe;
  --color-primary-400:  #60a5fa;
  --color-accent:       #6366f1;
  --color-accent-50:    #eef2ff;
  --color-bg:           #f5f7fb;
  --color-surface:      #ffffff;
  --color-surface-2:    #f7faf9;
  --color-border:       #d8e1ea;
  --color-border-soft:  #edf1f5;
  --color-text:         #111827;
  --color-text-muted:   #52606f;
  --color-text-subtle:  #8895a7;
  --color-success:      #15803d;
  --color-success-50:   #e8f7ee;
  --color-error:        #b42318;
  --color-error-50:     #fff0ed;
  --color-warning:      #d97706;
  --color-warning-50:   #fff7df;
  --color-highlight:    #fff2a8;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Roboto Mono", monospace;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px;  --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px;

  --radius-1: 4px; --radius-2: 6px; --radius-3: 8px; --radius-4: 12px; --radius-pill: 999px;

  --shadow-1: 0 1px 2px rgba(17, 24, 39, 0.05), 0 1px 3px rgba(17, 24, 39, 0.06);
  --shadow-2: 0 10px 28px rgba(17, 24, 39, 0.08);
  --shadow-pop: 0 18px 44px rgba(17, 24, 39, 0.18);

  --sidebar-w: 220px;
  --sidebar-collapsed-w: 64px;
  --topbar-h: 56px;
  --bottom-tabs-h: 60px;
  --quiz-rail-w: 270px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--color-primary-50); color: var(--color-primary-h); }

/* ---------- App layout ---------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas: "sidebar topbar" "sidebar main";
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(37, 99, 235, 0.05), rgba(245, 247, 251, 0) 220px),
    var(--color-bg);
}
.app[data-no-shell="true"] {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  grid-template-areas: "main";
}
.sidebar  { grid-area: sidebar; }
.topbar   { grid-area: topbar; }
.view     { grid-area: main; min-width: 0; }

/* ---------- Sidebar ---------- */
.sidebar {
  background: #fbfcfd;
  border-right: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-3) var(--space-4);
  display: flex; flex-direction: column;
  position: sticky; top: 0;
  height: 100vh;
  overflow-y: auto;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 10px;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-3);
  color: var(--color-primary);
  font-weight: 800;
  border: 1px solid transparent;
}
.brand:hover { background: var(--color-primary-50); border-color: var(--color-primary-100); }
.brand-mark { flex-shrink: 0; }
.brand-text { display: flex; align-items: center; gap: 4px; letter-spacing: 0.5px; font-size: 13px; }
.brand-text-strong { color: var(--color-primary); font-weight: 800; }
.brand-text-muted { color: var(--color-text-muted); font-weight: 700; }

.side-nav { flex: 1; display: flex; flex-direction: column; gap: var(--space-3); }
.side-group { display: flex; flex-direction: column; gap: 2px; }
.side-label {
  font-size: 10px; font-weight: 700; letter-spacing: 0.6px;
  text-transform: uppercase; color: var(--color-text-subtle);
  padding: 0 10px var(--space-1);
}
.side-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-2);
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 13px;
  transition: background 120ms, color 120ms, transform 120ms;
}
.side-item .i { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.85; }
.side-item:hover { background: var(--color-surface); color: var(--color-text); transform: translateX(1px); }
.side-item.active {
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--color-primary-100);
}
.side-item.active .i { opacity: 1; }

.side-foot { margin-top: var(--space-4); padding-top: var(--space-3); border-top: 1px solid var(--color-border-soft); }
.side-stats { font-size: 11px; color: var(--color-text-subtle); padding: 0 10px var(--space-2); line-height: 1.5; }
.side-stats b { color: var(--color-text-muted); font-weight: 600; }
.side-logout {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-2);
  color: var(--color-text-muted);
  font-weight: 500; font-size: 13px;
  width: 100%;
}
.side-logout .i { width: 18px; height: 18px; }
.side-logout:hover { background: var(--color-error-50); color: var(--color-error); }

.side-item svg, .side-logout svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Topbar ---------- */
.topbar {
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-4);
  display: flex; align-items: center; gap: var(--space-3);
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(10px);
}
.topbar-burger { display: none; }
.icon-btn {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-2);
  color: var(--color-text-muted);
}
.icon-btn:hover { background: var(--color-surface-2); color: var(--color-text); }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.topbar-search {
  flex: 1;
  max-width: 560px;
  display: flex; align-items: center; gap: 8px;
  background: #f9fbfd;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2);
  padding: 6px 10px;
  height: 36px;
  transition: background 120ms, border-color 120ms, box-shadow 120ms;
}
.topbar-search:focus-within { border-color: var(--color-primary); background: var(--color-surface); box-shadow: 0 0 0 3px var(--color-primary-50); }
.topbar-search .search-i { width: 16px; height: 16px; color: var(--color-text-subtle); fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.topbar-search input {
  flex: 1; border: none; outline: none; background: transparent;
  font-size: 13px;
}
.topbar-search input::placeholder { color: var(--color-text-subtle); }
.topbar-search kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-1);
  padding: 1px 5px;
  color: var(--color-text-subtle);
}

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: var(--space-3); }
.streak-pill {
  font-size: 12px; font-weight: 600;
  background: var(--color-warning-50);
  color: #92660a;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid #f3da7d;
}
.streak-pill:empty { display: none; }

.user-chip { display: flex; align-items: center; gap: 8px; padding: 4px 8px 4px 4px; }
.avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-400));
  color: white;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px;
}
.user-name { font-size: 13px; font-weight: 600; color: var(--color-text); }

/* ---------- Bottom tabs (mobile) ---------- */
.bottom-tabs {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  height: var(--bottom-tabs-h);
  z-index: 40;
}
.bottom-tabs a {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  font-size: 10px;
  color: var(--color-text-subtle);
  padding-bottom: env(safe-area-inset-bottom);
}
.bottom-tabs a svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.bottom-tabs a.active { color: var(--color-primary); }

/* ---------- Main view ---------- */
.view {
  padding: var(--space-5);
  overflow-x: hidden;
  width: 100%;
}
.view.full { padding: 0; }

/* ---------- Headings ---------- */
h1 { font-size: 22px; font-weight: 700; letter-spacing: -0.2px; margin: 0 0 var(--space-3); }
h2 { font-size: 18px; font-weight: 700; letter-spacing: -0.1px; margin: 0 0 var(--space-2); }
h3 { font-size: 14px; font-weight: 700; margin: 0 0 var(--space-2); }
h4 { font-size: 12px; font-weight: 700; margin: 0; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.muted { color: var(--color-text-muted); }
.subtle { color: var(--color-text-subtle); }
.tnum { font-feature-settings: "tnum"; font-variant-numeric: tabular-nums; }

/* ---------- Layout helpers ---------- */
.grid { display: grid; gap: var(--space-3); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-12 { grid-template-columns: repeat(12, 1fr); }
.span-2 { grid-column: span 2; } .span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; } .span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; } .span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; } .span-12 { grid-column: span 12; }
.row { display: flex; align-items: center; gap: var(--space-2); }
.between { justify-content: space-between; }
.gap-1 { gap: 4px; } .gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; }
.mt-1 { margin-top: 4px; } .mt-2 { margin-top: 8px; } .mt-3 { margin-top: 12px; } .mt-4 { margin-top: 16px; } .mt-5 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; } .mb-2 { margin-bottom: 8px; } .mb-3 { margin-bottom: 12px; } .mb-4 { margin-bottom: 16px; } .mb-5 { margin-bottom: 24px; }

/* ---------- Card ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-3);
  padding: var(--space-4);
  display: flex; flex-direction: column;
  min-width: 0;
  box-shadow: var(--shadow-1);
}
.card.padded-sm { padding: var(--space-3); }
.card-h { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: var(--space-3); flex-wrap: wrap; }
.card-h h2, .card-h h3 { margin: 0; }
.card-link {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3);
  padding: var(--space-3);
  color: inherit;
  transition: border-color 80ms, transform 80ms;
}
.card-link:hover { border-color: var(--color-primary-200); transform: translateY(-1px); box-shadow: var(--shadow-2); }

.page-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.page-title-row h1 { margin-bottom: 4px; }
.page-title-row p { margin: 0; max-width: 680px; }
.bank-summary {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.bank-summary span {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  min-height: 32px;
  padding: 6px 10px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 12px;
  box-shadow: var(--shadow-1);
}
.bank-summary strong { color: var(--color-text); font-feature-settings: "tnum"; }

/* ---------- Stat tiles ---------- */
.stat-tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-3);
  padding: var(--space-3) var(--space-3) 12px;
  display: flex; flex-direction: column; gap: 6px;
  min-width: 0;
  position: relative;
  overflow: hidden;
  transition: border-color 100ms, box-shadow 100ms, transform 100ms;
}
.stat-tile::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--color-primary); opacity: 0.85;
}
.stat-tile.success::before { background: var(--color-success); }
.stat-tile.warn::before    { background: #d29408; }
.stat-tile.error::before   { background: var(--color-error); }
.stat-tile:hover { box-shadow: var(--shadow-2); border-color: var(--color-primary-200); }
.stat-tile .stat-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.stat-tile .label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.4px;
  text-transform: uppercase; color: var(--color-text-subtle);
}
.stat-tile .stat-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--color-primary-50);
  color: var(--color-primary);
  flex-shrink: 0;
}
.stat-tile .stat-icon svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.stat-tile.success .stat-icon { background: var(--color-success-50); color: var(--color-success); }
.stat-tile.warn .stat-icon    { background: var(--color-warning-50); color: #92660a; }
.stat-tile.error .stat-icon   { background: var(--color-error-50); color: var(--color-error); }
.stat-tile .stat-row { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.stat-tile .value {
  font-size: 26px; font-weight: 700;
  color: var(--color-text);
  font-feature-settings: "tnum"; line-height: 1.1;
  letter-spacing: -0.3px;
}
.stat-tile .sub { font-size: 11px; color: var(--color-text-muted); }
.stat-tile.success .value { color: var(--color-success); }
.stat-tile.warn .value { color: #92660a; }
.stat-tile.error .value { color: var(--color-error); }
.stat-tile .delta {
  font-size: 11px; font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  white-space: nowrap;
}
.stat-tile .delta.up { color: var(--color-success); background: var(--color-success-50); }
.stat-tile .delta.dn { color: var(--color-error); background: var(--color-error-50); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 36px; padding: 0 14px;
  border-radius: var(--radius-2);
  font-weight: 600; font-size: 13px;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background 120ms, border-color 120ms, color 120ms, transform 80ms, box-shadow 120ms;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-h); box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18); }
.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-secondary:hover { border-color: var(--color-primary-200); color: var(--color-primary); }
.btn-ghost { background: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-surface-2); color: var(--color-text); }
.btn-danger { background: var(--color-error); color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { height: 28px; padding: 0 10px; font-size: 12px; border-radius: var(--radius-1); }
.btn-lg { height: 44px; padding: 0 20px; font-size: 14px; }
.btn-block { display: flex; width: 100%; }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--space-3); }
.field > label { font-size: 12px; font-weight: 600; color: var(--color-text); }
.input, .select, .textarea {
  background: #fbfcfd;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2);
  padding: 8px 10px;
  font-size: 13px;
  color: var(--color-text);
  transition: border-color 80ms;
  width: 100%;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}
.help-text { font-size: 11px; color: var(--color-text-muted); }
.error-text { color: var(--color-error); font-size: 12px; padding: 6px 10px; background: var(--color-error-50); border-radius: var(--radius-2); border: 1px solid #f3c2c2; }

/* ---------- Chip / Pill ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 80ms, border-color 80ms, color 80ms;
  user-select: none;
}
.chip:hover { border-color: var(--color-primary-200); color: var(--color-primary); }
.chip.active { background: var(--color-primary-50); border-color: var(--color-primary); color: var(--color-primary); font-weight: 600; }
.chip-group { display: flex; flex-wrap: wrap; gap: 6px; }

.badge {
  display: inline-flex; align-items: center;
  padding: 1px 8px;
  border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 600;
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-soft);
}
.badge-primary { background: var(--color-primary-50); color: var(--color-primary); border-color: transparent; }
.badge-success { background: var(--color-success-50); color: var(--color-success); border-color: transparent; }
.badge-ai       { background: var(--color-accent-50); color: var(--color-accent); border-color: transparent; }
.badge-warn    { background: var(--color-warning-50); color: #92660a; border-color: transparent; }
.badge-danger  { background: var(--color-error-50); color: var(--color-error); border-color: transparent; }

.setup-card { gap: var(--space-2); }
.stat-card-soft {
  background: linear-gradient(180deg, var(--color-surface) 0%, #f8fbfb 100%);
  border-color: var(--color-primary-100);
}
.key-breakdown {
  display: grid;
  gap: 8px;
}
.key-breakdown div {
  display: grid;
  grid-template-columns: 12px 1fr;
  column-gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2);
  background: var(--color-surface);
}
.key-breakdown strong {
  font-size: 16px;
  line-height: 1;
  font-feature-settings: "tnum";
}
.key-breakdown small {
  grid-column: 2;
  color: var(--color-text-muted);
  font-size: 11px;
}
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-primary);
  align-self: start;
  margin-top: 3px;
}
.dot.success { background: var(--color-success); }
.dot.ai { background: var(--color-accent); }
.dot.warn { background: var(--color-warning); }

/* ---------- Trial banner (launch promo) ---------- */
.trial-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.12) 0%, rgba(59, 130, 246, 0.10) 100%);
  border: 1px solid rgba(34, 197, 94, 0.35);
  border-radius: var(--radius-3);
}
.tb-icon { font-size: 26px; line-height: 1; }
.tb-body { flex: 1; line-height: 1.4; color: var(--color-text); }
.daily-cap-banner.is-trial {
  border-color: rgba(34, 197, 94, 0.4);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.10) 0%, rgba(59, 130, 246, 0.08) 100%);
}
.daily-cap-banner.is-trial .bar { background: rgba(34, 197, 94, 0.2); }
.daily-cap-banner.is-trial .bar i { background: var(--color-success); }

/* ---------- Your progress card ---------- */
.progress-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}
.pg-cell {
  padding: 10px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2);
}
.pg-icon { font-size: 16px; line-height: 1; margin-bottom: 4px; opacity: 0.85; }
.pg-value {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
  font-feature-settings: "tnum";
}
.pg-label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pg-cell.good {
  background: var(--color-success-50, #e6f7ee);
  border-color: transparent;
}
.pg-cell.good .pg-icon, .pg-cell.good .pg-value { color: #14633a; }
.pg-cell.good .pg-label { color: #1b7a48; }
.pg-cell.bad {
  background: var(--color-error-50, #fde7e7);
  border-color: transparent;
}
.pg-cell.bad .pg-icon, .pg-cell.bad .pg-value { color: #962020; }
.pg-cell.bad .pg-label { color: #b22b2b; }
.reset-progress-btn {
  color: var(--color-error);
  border-color: var(--color-error-50, #fde7e7);
}
.reset-progress-btn:hover:not(:disabled) {
  background: var(--color-error-50, #fde7e7);
}
.reset-progress-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------- Professional metrics card ---------- */
.metric-hero {
  padding: 10px 12px 12px;
  background: linear-gradient(180deg, var(--color-primary-50, #eff5ff) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-primary-100);
  border-radius: var(--radius-2);
  margin-bottom: 10px;
}
.mh-value {
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  font-feature-settings: "tnum";
}
.mh-unit { font-size: 18px; margin-left: 2px; font-weight: 600; }
.mh-label { font-size: 12px; margin-top: 4px; color: var(--color-text); }
.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}
.metric-cell {
  padding: 8px 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2);
}
.mc-label { font-size: 10px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.mc-value { font-size: 18px; font-weight: 700; line-height: 1.1; margin-top: 2px; }
.mc-sub { font-size: 11px; margin-top: 2px; }
.mc-bar {
  height: 4px;
  background: var(--color-border-soft);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 6px;
}
.mc-bar i {
  display: block;
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
}
.metric-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.mf-pill {
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--color-border-soft);
  background: var(--color-surface);
  line-height: 1.3;
}
.mf-pill.good { background: var(--color-success-50, #e6f7ee); color: #14633a; border-color: transparent; }
.mf-pill.warn { background: var(--color-warning-50, #fff3da); color: #92660a; border-color: transparent; }
.metrics-empty {
  text-align: center;
  padding: 14px 10px 6px;
  color: var(--color-text-muted);
}
.me-icon { font-size: 24px; line-height: 1; }
.me-title { font-weight: 600; font-size: 13px; color: var(--color-text); margin-top: 6px; }
.me-sub { font-size: 11px; line-height: 1.5; margin-top: 4px; }

/* ---------- Radio cards ---------- */
.radio-group { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; }
.radio-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-3);
  padding: var(--space-3);
  cursor: pointer;
  display: flex; flex-direction: column; gap: 4px;
  transition: border-color 120ms, background 120ms, box-shadow 120ms;
}
.radio-card input { display: none; }
.radio-card .label-text { font-weight: 600; font-size: 13px; }
.radio-card .label-desc { font-size: 11px; color: var(--color-text-muted); line-height: 1.4; }
.radio-card:hover { border-color: var(--color-primary-200); box-shadow: var(--shadow-1); }
.radio-card.selected { border-color: var(--color-primary); background: var(--color-primary-50); box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.14); }

/* ---------- Tables ---------- */
.tbl { width: 100%; font-size: 13px; }
.tbl th, .tbl td { padding: 8px 8px; text-align: left; }
.tbl th { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.4px; color: var(--color-text-subtle); border-bottom: 1px solid var(--color-border); }
.tbl tr td { border-bottom: 1px solid var(--color-border-soft); }
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover { background: var(--color-surface-2); }

/* ---------- Progress bar ---------- */
.bar { height: 6px; background: var(--color-primary-50); border-radius: var(--radius-pill); overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--color-primary); transition: width 200ms; }
.bar.success > i { background: var(--color-success); }
.bar.warn > i { background: #d29408; }
.bar.error > i { background: var(--color-error); }
.bar-thin { height: 4px; }

/* ---------- Charts ---------- */
.heatmap { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 14px); gap: 3px; justify-content: start; }
.heatmap .cell { width: 14px; height: 14px; border-radius: 2px; background: var(--color-surface-2); border: 1px solid var(--color-border-soft); }
.heatmap .cell.l1 { background: var(--color-primary-100); border-color: transparent; }
.heatmap .cell.l2 { background: var(--color-primary-200); border-color: transparent; }
.heatmap .cell.l3 { background: var(--color-primary-400); border-color: transparent; }
.heatmap .cell.l4 { background: var(--color-primary); border-color: transparent; }
.heatmap-legend { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--color-text-subtle); justify-content: flex-end; margin-top: 6px; }
.heatmap-legend .swatch { width: 10px; height: 10px; border-radius: 2px; }

.spark { width: 100%; height: 60px; }
.spark polyline.fill { fill: var(--color-primary-50); stroke: none; }
.spark polyline.stroke { fill: none; stroke: var(--color-primary); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.spark line.grid { stroke: var(--color-border-soft); stroke-width: 1; stroke-dasharray: 2 3; }

.donut-wrap { display: flex; align-items: center; gap: 16px; }
.donut { width: 120px; height: 120px; }
.donut-legend { display: flex; flex-direction: column; gap: 6px; font-size: 12px; }
.donut-legend .swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; }

.hbar-row, .spec-row { display: flex; flex-direction: column; gap: 4px; padding: 6px 0; }
.hbar-row + .hbar-row, .spec-row + .spec-row { border-top: 1px dashed var(--color-border-soft); }
.hbar-head, .spec-row-head { display: flex; justify-content: space-between; font-size: 12px; font-weight: 500; }
.hbar-head span:last-child, .spec-row-head span:last-child { color: var(--color-text-muted); font-feature-settings: "tnum"; }

/* Goal ring */
.goal-ring-wrap { display: flex; gap: 14px; align-items: center; padding: 4px 0 0; }
.goal-ring { position: relative; width: 96px; height: 96px; flex-shrink: 0; }
.goal-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.goal-ring .rb { fill: none; stroke: var(--color-primary-50); stroke-width: 8; }
.goal-ring .rf { fill: none; stroke: var(--color-primary); stroke-width: 8; stroke-linecap: round; transition: stroke-dasharray 400ms ease; }
.goal-ring.done .rf { stroke: var(--color-success); }
.goal-ring-text { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.goal-ring-text b { font-size: 20px; font-weight: 700; color: var(--color-text); font-feature-settings: "tnum"; line-height: 1; }
.goal-ring-text span { font-size: 9px; color: var(--color-text-muted); margin-top: 3px; text-transform: uppercase; letter-spacing: 0.4px; }
.goal-ring.done .goal-ring-text b { color: var(--color-success); }

/* Weak rows */
.weak-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; margin: 0 -4px;
  border-radius: var(--radius-2);
  color: inherit;
  transition: background 80ms;
}
.weak-row + .weak-row { border-top: 1px dashed var(--color-border-soft); border-radius: 0; margin-top: 0; padding-top: 8px; }
.weak-row:hover { background: var(--color-surface-2); }
.weak-row-main { flex: 1; display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.weak-row-name { font-size: 12px; font-weight: 600; }
.weak-row-side { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; flex-shrink: 0; }
.weak-row-side .tnum { font-size: 14px; font-weight: 700; color: var(--color-error); }

/* ---------- Quiz screen ---------- */
.quiz-shell { display: grid; grid-template-columns: minmax(0, 1fr) var(--quiz-rail-w); gap: var(--space-4); align-items: start; }
.quiz-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.94);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  position: sticky;
  top: calc(var(--topbar-h) + 8px);
  z-index: 20;
  box-shadow: var(--shadow-1);
}
.quiz-bar .qnum { font-weight: 700; font-size: 14px; color: var(--color-text); }
.quiz-bar .timer {
  background: var(--color-primary-50);
  color: var(--color-primary);
  padding: 4px 10px;
  border-radius: var(--radius-1);
  font-weight: 600;
  font-feature-settings: "tnum";
  font-family: var(--font-mono);
  font-size: 13px;
}
.quiz-bar .timer.low { background: var(--color-error-50); color: var(--color-error); }
.quiz-bar .right { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

.q-stem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-3);
  padding: var(--space-5);
  box-shadow: var(--shadow-1);
}
.q-source {
  font-size: 11px; font-weight: 600; letter-spacing: 0.4px;
  text-transform: uppercase; color: var(--color-text-subtle);
  margin-bottom: var(--space-2);
}
.q-stem { font-size: 16px; line-height: 1.75; color: var(--color-text); max-width: 86ch; }
.q-stem mark { background: var(--color-highlight); padding: 0 2px; border-radius: 2px; }

.q-options { list-style: none; padding: 0; margin: var(--space-4) 0 0; display: flex; flex-direction: column; gap: 10px; }
.q-option {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 14px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2);
  background: #fbfcfd;
  cursor: pointer;
  transition: border-color 120ms, background 120ms, box-shadow 120ms, transform 120ms;
}
.q-option:hover { border-color: var(--color-primary-200); background: var(--color-surface); box-shadow: var(--shadow-1); transform: translateY(-1px); }
.q-option .opt-letter {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--color-text-muted);
  color: var(--color-text-muted);
  font-size: 11px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.q-option .opt-text { font-size: 14px; line-height: 1.55; min-width: 0; overflow-wrap: anywhere; }
.q-option.selected { background: var(--color-primary-50); border-color: var(--color-primary); }
.q-option.selected .opt-letter { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.q-option.correct { background: var(--color-success-50); border-color: var(--color-success); }
.q-option.correct .opt-letter { background: var(--color-success); color: white; border-color: var(--color-success); }
.q-option.wrong { background: var(--color-error-50); border-color: var(--color-error); }
.q-option.wrong .opt-letter { background: var(--color-error); color: white; border-color: var(--color-error); }
.q-option.struck { text-decoration: line-through; opacity: 0.55; }
.q-option.disabled { cursor: default; }
.q-option.disabled:hover { transform: none; box-shadow: none; }

.q-explanation {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: #f8fbfb;
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-2);
  font-size: 13px;
  line-height: 1.65;
}
.q-explanation.correct { border-left-color: var(--color-success); }
.q-explanation.wrong   { border-left-color: var(--color-error); }
.q-explanation h4 { color: var(--color-primary); margin-bottom: 6px; }
.q-explanation.correct h4 { color: var(--color-success); }
.q-explanation.wrong h4   { color: var(--color-error); }
.q-explanation.practice-only { border-left-color: var(--color-warning); background: var(--color-warning-50); }
.q-explanation.practice-only h4 { color: #9a5a05; }
.q-explanation.practice-only.ai-available { border-left-color: var(--color-accent); background: var(--color-accent-50); }
.q-explanation.practice-only.ai-available h4 { color: var(--color-accent); }
.ai-evidence { border-top-color: var(--color-accent-50); }
.source-evidence {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
}
.source-evidence span {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text-subtle);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.source-evidence p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 12px;
}

.q-actions { display: grid; grid-template-columns: auto 1fr; gap: 8px; margin-top: var(--space-4); align-items: center; }
.q-actions-right { display: flex; justify-content: flex-end; gap: 8px; }

/* Quiz right rail */
.quiz-rail { display: flex; flex-direction: column; gap: var(--space-3); position: sticky; top: calc(var(--topbar-h) + 76px); }
.quiz-rail .card { padding: var(--space-3); }
.q-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
  margin-top: 8px;
}
.q-grid .cell {
  aspect-ratio: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-1);
  background: var(--color-surface);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  position: relative;
  font-feature-settings: "tnum";
}
.q-grid .cell:hover { border-color: var(--color-primary-200); }
.q-grid .cell.answered { background: var(--color-primary-50); color: var(--color-primary); border-color: var(--color-primary-100); }
.q-grid .cell.correct  { background: var(--color-success-50); color: var(--color-success); border-color: transparent; }
.q-grid .cell.wrong    { background: var(--color-error-50);   color: var(--color-error);   border-color: transparent; }
.q-grid .cell.current  { border: 2px solid var(--color-primary); color: var(--color-primary); background: var(--color-surface); }
.q-grid .cell.bookmarked::after {
  content: '★';
  position: absolute; top: -2px; right: 0;
  font-size: 9px; color: var(--color-warning);
  text-shadow: 0 0 1px white;
}

.legend { display: flex; flex-wrap: wrap; gap: 8px; font-size: 11px; color: var(--color-text-muted); margin-top: 8px; }
.legend-dot { width: 10px; height: 10px; border-radius: 2px; display: inline-block; margin-right: 4px; vertical-align: middle; }

.toolbar-tools { display: flex; flex-wrap: wrap; gap: 4px; }
.toolbar-tools .tool {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 8px;
  font-size: 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-1);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
}
.toolbar-tools .tool:hover { border-color: var(--color-primary-200); color: var(--color-primary); }
.toolbar-tools .tool.on { background: var(--color-primary-50); color: var(--color-primary); border-color: var(--color-primary); }

/* ---------- Score ring ---------- */
.score-ring-wrap { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.score-ring { position: relative; width: 160px; height: 160px; }
.score-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.score-ring .ring-bg { stroke: var(--color-primary-50); fill: none; stroke-width: 12; }
.score-ring .ring-fill { stroke: var(--color-primary); fill: none; stroke-width: 12; stroke-linecap: round; transition: stroke-dasharray 600ms ease; }
.score-ring.success .ring-fill { stroke: var(--color-success); }
.score-ring.warn .ring-fill { stroke: #d29408; }
.score-ring.error .ring-fill { stroke: var(--color-error); }
.score-ring-text { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.score-ring-text b { font-size: 32px; font-weight: 700; color: var(--color-text); font-feature-settings: "tnum"; }
.score-ring-text span { font-size: 11px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* ---------- Auth pages ---------- */
.auth-page {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  min-height: 100vh;
}
.auth-hero {
  background: linear-gradient(135deg, #075e59 0%, #0f766e 58%, #2459c4 100%);
  color: white;
  padding: 48px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.auth-hero .brand { color: white; padding: 0; margin-bottom: 32px; }
.auth-hero .brand-text-strong, .auth-hero .brand-text-muted { color: white; }
.auth-hero h1 { font-size: 32px; line-height: 1.2; letter-spacing: -0.5px; margin-bottom: 16px; }
.auth-hero h1 em { font-style: normal; color: #fde68a; }
.auth-hero p { font-size: 15px; opacity: 0.9; line-height: 1.6; max-width: 520px; }
.auth-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; max-width: 480px; }
.auth-stats .stat { background: rgba(255,255,255,0.12); border-radius: var(--radius-3); padding: 16px; }
.auth-stats .stat-num { font-size: 22px; font-weight: 700; font-feature-settings: "tnum"; }
.auth-stats .stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; opacity: 0.85; }
.auth-features { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; max-width: 480px; }
.auth-feature { display: flex; gap: 14px; align-items: flex-start; }
.auth-feature-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.auth-feature strong { display: block; font-size: 14px; }
.auth-feature span { font-size: 12px; opacity: 0.8; line-height: 1.5; }

.auth-form-wrap { display: flex; align-items: center; justify-content: center; padding: 48px; }
.auth-form { width: 100%; max-width: 420px; }
.auth-form h2 { font-size: 24px; }
.auth-form .subtitle { font-size: 13px; color: var(--color-text-muted); margin-bottom: 24px; }
.auth-switch { margin-top: 18px; font-size: 13px; color: var(--color-text-muted); text-align: center; }
.auth-switch a { color: var(--color-primary); font-weight: 600; }

/* ---------- Hero (logged in) ---------- */
.hero { margin-bottom: var(--space-4); }
.hero h1 { font-size: 22px; margin: 0 0 4px; }
.hero p { font-size: 13px; color: var(--color-text-muted); margin: 0; }

.hero-rich {
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4);
  flex-wrap: wrap;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-3);
  margin-bottom: var(--space-4);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.hero-main { flex: 1; min-width: 0; position: relative; z-index: 1; }
.hero-eyebrow {
  font-size: 12px; color: var(--color-text-muted);
  text-transform: none; letter-spacing: 0;
  margin-bottom: 4px;
}
.hero-eyebrow strong { color: var(--color-text); font-weight: 700; }
.hero-rich h1 { font-size: 26px; line-height: 1.2; letter-spacing: -0.4px; margin: 0 0 6px; }
.hero-rich p { font-size: 14px; color: var(--color-text-muted); max-width: 640px; }
.hero-actions { display: flex; gap: 8px; flex-wrap: wrap; position: relative; z-index: 1; align-self: center; }

/* ---------- Milestones strip ---------- */
.milestones-card .bar { background: var(--color-primary-50); }
.milestones {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}
.ms {
  display: flex; flex-direction: column; gap: 3px;
  padding: 10px 12px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2);
  background: var(--color-surface-2);
  position: relative;
  transition: border-color 80ms;
}
.ms.done {
  background: var(--color-success-50);
  border-color: rgba(22, 163, 74, 0.2);
}
.ms-icon {
  position: absolute; top: 8px; right: 8px;
  width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-success);
}
.ms-icon svg { width: 14px; height: 14px; }
.ms-label { font-size: 12px; font-weight: 600; color: var(--color-text); padding-right: 18px; }
.ms.done .ms-label { color: var(--color-success); }
.ms-prog { font-size: 11px; color: var(--color-text-muted); font-feature-settings: "tnum"; }
.ms-prog.earned { color: var(--color-success); font-weight: 600; }

/* ---------- Resume card ---------- */
.resume-card {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-h));
  color: white;
  border-radius: var(--radius-3);
  padding: var(--space-4);
  display: flex; flex-direction: column;
  gap: var(--space-2);
}
.resume-card .label { font-size: 11px; opacity: 0.85; text-transform: uppercase; letter-spacing: 0.5px; }
.resume-card h3 { color: white; font-size: 16px; margin: 0; }
.resume-card .meta { font-size: 12px; opacity: 0.9; }
.resume-card .actions { margin-top: auto; padding-top: var(--space-3); display: flex; gap: 8px; }
.resume-card .btn { background: white; color: var(--color-primary); }
.resume-card .btn-ghost { background: rgba(255,255,255,0.18); color: white; }
.resume-card .btn-ghost:hover { background: rgba(255,255,255,0.28); }
.resume-card .progress { display: flex; align-items: center; gap: 8px; margin-top: var(--space-2); }
.resume-card .progress .bar { background: rgba(255,255,255,0.18); flex: 1; }
.resume-card .progress .bar > i { background: white; }

/* ---------- Empty state ---------- */
.empty {
  text-align: center; padding: 64px 32px;
  color: var(--color-text-muted);
}
.empty-icon {
  font-size: 28px; font-weight: 700;
  width: 64px; height: 64px;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-radius: 50%;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--color-text);
  color: white;
  padding: 10px 16px;
  border-radius: var(--radius-2);
  font-size: 13px;
  z-index: 100;
  box-shadow: var(--shadow-pop);
}
.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-error); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(14, 26, 43, 0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
  padding: 16px;
}
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-3);
  padding: var(--space-5);
  max-width: 500px; width: 100%;
  box-shadow: var(--shadow-pop);
  max-height: 90vh; overflow-y: auto;
}

/* ---------- Loading bar ---------- */
.loading-bar {
  position: fixed; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--color-primary-50), var(--color-primary), var(--color-primary-50));
  background-size: 200% 100%;
  animation: lb 1s linear infinite;
  z-index: 100;
}
@keyframes lb { 0% { background-position: 100% 0 } 100% { background-position: -100% 0 } }

.q-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }

/* ---------- Tabs ---------- */
.tabs { display: flex; border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-3); }
.tabs .tab {
  padding: 8px 14px;
  font-size: 13px; font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs .tab:hover { color: var(--color-text); }
.tabs .tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root { --quiz-rail-w: 230px; }
  .app {
    grid-template-columns: var(--sidebar-collapsed-w) 1fr;
  }
  .sidebar { padding: var(--space-3) 6px; }
  .brand { padding: 6px; justify-content: center; }
  .brand-text { display: none; }
  .side-label { display: none; }
  .side-item span { display: none; }
  .side-item { justify-content: center; padding: 10px 0; }
  .side-foot .side-stats { display: none; }
  .side-logout span { display: none; }
  .side-logout { justify-content: center; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .quiz-shell { grid-template-columns: 1fr; }
  .quiz-rail { position: static; }
  .quiz-rail.collapsed { display: none; }
}

@media (max-width: 640px) {
  :root { --topbar-h: 52px; --bottom-tabs-h: 64px; }
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-h) 1fr;
    grid-template-areas: "topbar" "main";
    padding-bottom: var(--bottom-tabs-h);
  }
  .sidebar { display: none; }
  .topbar-burger { display: inline-flex; }
  .topbar-search input { font-size: 13px; }
  .topbar-search kbd { display: none; }
  .topbar-search { max-width: none; flex: 1; }
  .topbar { padding: 0 12px; }
  .user-name, .streak-pill { display: none; }
  .bottom-tabs { display: flex; }
  .view { padding: var(--space-3); }
  .page-title-row { flex-direction: column; gap: var(--space-3); }
  .bank-summary { justify-content: flex-start; width: 100%; }
  .bank-summary span { flex: 1 1 140px; }

  .grid-4, .grid-3, .grid-2, .grid-12 { grid-template-columns: 1fr; }
  .grid-2.dense { grid-template-columns: repeat(2, 1fr); }
  .setup-card .grid-2.dense { grid-template-columns: 1fr; }
  .span-2, .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-12 { grid-column: span 1 !important; }

  .auth-page { grid-template-columns: 1fr; }
  .auth-hero { padding: 32px 24px; }
  .auth-hero h1 { font-size: 24px; }
  .auth-form-wrap { padding: 32px 24px; }

  .quiz-shell { grid-template-columns: 1fr; }
  .quiz-bar {
    position: static;
    top: calc(var(--topbar-h) + 6px);
    gap: 8px;
    padding: 8px;
  }
  .quiz-bar .right {
    width: 100%;
    margin-left: 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .quiz-bar .right .btn {
    width: 100%;
    padding-left: 8px;
    padding-right: 8px;
  }
  .q-stem-card { padding: var(--space-4); }
  .q-stem { font-size: 15px; line-height: 1.7; }
  .q-option { padding: 12px; }
  .q-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
  }
  .q-actions .btn,
  .q-actions-right,
  .q-actions-right .btn {
    width: 100%;
  }
  .q-actions-right { display: grid; grid-template-columns: 1fr; }
  .quiz-rail {
    display: none;
    position: fixed; left: 0; right: 0; top: auto; bottom: var(--bottom-tabs-h);
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-3);
    max-height: 60vh; overflow-y: auto;
    z-index: 35;
  }
  .quiz-rail.open { display: flex; box-shadow: var(--shadow-pop); }
  .q-grid { grid-template-columns: repeat(10, 1fr); }

  .sidebar.drawer-open {
    display: flex; position: fixed; top: 0; left: 0; bottom: 0;
    width: 280px; z-index: 50;
    box-shadow: var(--shadow-pop);
  }
  .sidebar.drawer-open .brand-text,
  .sidebar.drawer-open .side-label,
  .sidebar.drawer-open .side-item span,
  .sidebar.drawer-open .side-foot .side-stats,
  .sidebar.drawer-open .side-logout span { display: revert; }
  .sidebar.drawer-open .brand { padding: 6px 10px; justify-content: flex-start; }
  .sidebar.drawer-open .side-item { padding: 8px 10px; justify-content: flex-start; }
  .sidebar.drawer-open .side-logout { justify-content: flex-start; padding: 8px 10px; }
  .scrim {
    position: fixed; inset: 0; background: rgba(14, 26, 43, 0.4);
    z-index: 49;
  }
}

/* ============================================================
   GLASS THEME — premium frosted layer, depth gradients, motion.
   Applied to: landing, sign-in/up, dashboard hero + secondary grid.
   Other pages inherit only the new background ambience + shell
   frosted treatment (sidebar, topbar, bottom-tabs, cards).
   ============================================================ */

/* Enforce the HTML `hidden` attribute — author `display:flex` rules on
   .sidebar / .topbar / .bottom-tabs would otherwise override it, causing
   the shell to leak through on auth/landing pages. */
[hidden] { display: none !important; }
:root {
  --glass-bg:           rgba(255, 255, 255, 0.62);
  --glass-bg-strong:    rgba(255, 255, 255, 0.78);
  --glass-border:       rgba(255, 255, 255, 0.55);
  --glass-border-strong:rgba(255, 255, 255, 0.7);
  --glass-shadow:       0 12px 40px rgba(15, 23, 42, 0.10), 0 2px 8px rgba(15, 23, 42, 0.04);
  --glass-shadow-lg:    0 24px 60px rgba(15, 23, 42, 0.14), 0 4px 12px rgba(15, 23, 42, 0.06);
  --glass-blur:         10px;
  --glass-blur-strong:  16px;
  --gradient-mesh:
    radial-gradient(at 12% 18%, rgba(147, 197, 253, 0.40) 0%, transparent 45%),
    radial-gradient(at 88% 12%, rgba(165, 180, 252, 0.34) 0%, transparent 45%),
    radial-gradient(at 78% 86%, rgba(96, 165, 250, 0.30) 0%, transparent 50%),
    radial-gradient(at 18% 92%, rgba(59, 130, 246, 0.22) 0%, transparent 50%);
  --gradient-cta:       linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #6366f1 130%);
  --accent-mint:        #14b8a6;
  --accent-amber:       #f59e0b;
}

/* Paint the gradient mesh once on body, fixed to viewport. */
body {
  background:
    var(--gradient-mesh),
    linear-gradient(180deg, #f3f7fa 0%, #ecf2f7 100%);
  background-attachment: fixed;
  min-height: 100vh;
}
.app { background: transparent; }

/* Frost the shell chrome (lighter blurs for snappier rendering) */
.sidebar {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(10px) saturate(130%);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
  border-right: 1px solid var(--glass-border);
}
.topbar {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(10px) saturate(130%);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
  border-bottom: 1px solid var(--glass-border);
}
.bottom-tabs {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px) saturate(130%);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
  border-top: 1px solid var(--glass-border);
}
.topbar-search {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.topbar-search:focus-within { background: rgba(255, 255, 255, 0.92); }
.side-item:hover { background: rgba(255, 255, 255, 0.7); }
.side-item.active {
  background: rgba(37, 99, 235, 0.12);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.22);
}

/* Universal card glass treatment (gentle override of .card / .stat-tile) */
.card {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--glass-shadow);
  padding: 18px;
  transition: box-shadow 130ms ease;
}
.card:hover { box-shadow: var(--glass-shadow-lg); }
.stat-tile {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--glass-shadow);
  transition: box-shadow 130ms ease, transform 130ms ease, border-color 130ms ease;
}
.stat-tile:hover {
  transform: translateY(-1px);
  box-shadow: var(--glass-shadow-lg);
  border-color: var(--glass-border-strong);
}

/* Roundier buttons + gradient primary */
.btn { border-radius: 10px; }
.btn-primary {
  background: var(--gradient-cta);
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.22);
  border: none;
}
.btn-primary:hover { box-shadow: 0 12px 24px rgba(37, 99, 235, 0.32); transform: translateY(-1px); }

/* Heatmap fills card width — full-year, GitHub-style activity graph */
.heatmap {
  width: 100%;
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(7, 1fr);
  grid-auto-columns: 1fr;
  gap: 3px;
  aspect-ratio: 53 / 7;
  justify-content: stretch;
}
.heatmap .cell {
  width: auto;
  height: auto;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 2px;
  min-width: 0;
  min-height: 0;
}

/* ============================================================
   AUTH SHELL — centered glass card on animated mesh
   Used by: landing(), authPage()
   ============================================================ */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  position: relative;
  overflow: hidden;
}
.auth-shell::before, .auth-shell::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
  animation: drift 18s ease-in-out infinite alternate;
}
.auth-shell::before {
  width: 520px; height: 520px;
  left: -120px; top: -120px;
  background: radial-gradient(circle, #93c5fd 0%, transparent 70%);
}
.auth-shell::after {
  width: 600px; height: 600px;
  right: -160px; bottom: -160px;
  background: radial-gradient(circle, #a5b4fc 0%, transparent 70%);
  animation-delay: -9s;
}
@keyframes drift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, -30px) scale(1.08); }
}

.auth-shell-inner {
  position: relative; z-index: 1;
  width: 100%; max-width: 460px;
  display: flex; flex-direction: column; align-items: center; gap: 22px;
}
.auth-brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--color-text);
  font-weight: 800;
  letter-spacing: 0.5px;
  font-size: 14px;
}
.auth-brand img { width: 32px; height: 32px; }
.auth-tagline { text-align: center; max-width: 400px; }
.auth-tagline h1 {
  font-size: 28px; font-weight: 700; letter-spacing: -0.4px;
  margin: 0 0 6px;
  background: linear-gradient(135deg, #2563eb 0%, #4f46e5 60%, #6366f1 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.18;
}
.auth-tagline p {
  font-size: 14px; color: var(--color-text-muted);
  margin: 0; line-height: 1.55;
}

.auth-card {
  width: 100%;
  padding: 32px 28px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.10), 0 4px 12px rgba(15, 23, 42, 0.04);
  position: relative;
}
.auth-card h2 {
  font-size: 22px; font-weight: 700; margin: 0 0 6px;
  color: var(--color-text);
  letter-spacing: -0.2px;
}
.auth-card .subtitle {
  font-size: 13px; color: var(--color-text-muted);
  margin: 0 0 22px;
}
.auth-card .field { margin-bottom: 14px; }
.auth-card .field > label {
  font-size: 12px; font-weight: 600;
  color: var(--color-text-muted);
}
.auth-card .input {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 14px;
  transition: border-color 120ms, background 120ms, box-shadow 120ms;
}
.auth-card .input:focus {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
}
.auth-card .help-text { color: var(--color-text-subtle); font-size: 11px; }
.auth-card .error-text { border-radius: 10px; }
.auth-card .btn-primary {
  height: 46px;
  font-size: 14px;
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.28);
}
.auth-card .btn-primary:hover {
  box-shadow: 0 14px 32px rgba(37, 99, 235, 0.36);
}
.auth-card .btn-secondary {
  height: 46px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 12px;
  font-size: 14px;
}
.auth-card .auth-switch {
  margin-top: 18px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}
.auth-card .auth-switch a { color: var(--color-primary); font-weight: 600; }
.auth-card .auth-reassure {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  text-align: center;
  font-size: 11px;
  color: var(--color-text-subtle);
  letter-spacing: 0.2px;
  line-height: 1.6;
}

/* Google Sign-In button + divider */
.auth-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 18px 0; color: var(--color-text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
}
.auth-divider::before, .auth-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--color-border);
}
.btn-google {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  height: 42px; width: 100%;
  background: #fff; color: #3c4043; border: 1px solid #dadce0;
  border-radius: var(--radius-2); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: background .15s, box-shadow .15s;
}
.btn-google:hover { background: #f8f9fa; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.btn-google:active { background: #e8eaed; }
.btn-google:disabled { opacity: .6; cursor: not-allowed; }
.btn-google svg { flex-shrink: 0; }
.google-btn-wrap { width: 100%; }
:root[data-theme="dark"] .btn-google {
  background: rgba(255,255,255,.08); color: var(--color-text); border-color: rgba(255,255,255,.15);
}
:root[data-theme="dark"] .btn-google:hover { background: rgba(255,255,255,.12); }

/* Landing-specific feature pills */
.landing-features {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  max-width: 540px;
  margin-top: 4px;
}
.landing-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.04);
}
.landing-pill .ic { font-size: 14px; line-height: 1; }
.landing-promo {
  display: flex; justify-content: center;
  margin-top: 4px;
}
.landing-promo-pill {
  display: inline-flex; align-items: center;
  padding: 9px 18px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.18) 0%, rgba(59, 130, 246, 0.16) 100%);
  border: 1px solid rgba(34, 197, 94, 0.45);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  color: #14633a;
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.10);
}
:root[data-theme="dark"] .landing-promo-pill {
  color: #6ee7b7;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.25) 0%, rgba(59, 130, 246, 0.20) 100%);
  border-color: rgba(110, 231, 183, 0.45);
}
.landing-actions {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  width: 100%;
}
.landing-actions .btn { min-width: 180px; flex: 1 1 180px; max-width: 220px; }
.landing-stats {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 8px;
  letter-spacing: 0.2px;
  text-align: center;
}

/* ============================================================
   DASHBOARD — smart hero + pulse strip + 2-col secondary
   ============================================================ */
.smart-hero {
  position: relative;
  padding: 28px 32px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 22px;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(15, 23, 42, 0.04);
  margin-bottom: 18px;
  overflow: hidden;
}
.smart-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(at 88% -20%, rgba(99, 102, 241, 0.20) 0%, transparent 55%),
    radial-gradient(at -10% 110%, rgba(20, 184, 166, 0.18) 0%, transparent 55%);
  pointer-events: none;
}
.smart-hero-inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.smart-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.smart-hero-eyebrow strong { color: var(--color-text); font-weight: 700; }
.smart-hero h1 {
  font-size: 30px; font-weight: 700; letter-spacing: -0.5px;
  margin: 0 0 8px;
  line-height: 1.2;
  color: var(--color-text);
}
.smart-hero .why {
  font-size: 13.5px; color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 580px;
  margin: 0;
}
.smart-hero-cta {
  display: flex; flex-direction: column; gap: 8px; align-items: stretch;
  min-width: 220px;
}
.smart-hero-cta .start-btn {
  display: flex; flex-direction: column;
  padding: 16px 22px;
  height: auto;
  background: var(--gradient-cta);
  color: white;
  border-radius: 14px;
  border: none;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.30);
  align-items: stretch; text-align: left; gap: 4px;
  transition: transform 130ms, box-shadow 130ms;
  text-decoration: none;
}
.smart-hero-cta .start-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(37, 99, 235, 0.38);
}
.smart-hero-cta .start-btn .lbl {
  font-size: 11px; font-weight: 600; letter-spacing: 0.6px;
  text-transform: uppercase;
  opacity: 0.85;
}
.smart-hero-cta .start-btn .main {
  font-size: 16px; font-weight: 700;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.smart-hero-cta .start-btn .main .arrow { font-size: 20px; line-height: 1; }
.smart-hero-cta .start-btn .meta { font-size: 11px; opacity: 0.85; font-weight: 500; }
.smart-hero-cta .alt-link {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 6px;
}
.smart-hero-cta .alt-link:hover { color: var(--color-primary); }

/* Pulse strip — 4 compact tiles */
.pulse-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}
.pulse {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 14px;
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
  display: flex; flex-direction: column; gap: 4px;
  position: relative;
  transition: transform 130ms, box-shadow 130ms;
  min-height: 96px;
}
.pulse:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08); }
.pulse .pulse-label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.4px;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  padding-right: 38px;
}
.pulse .pulse-value {
  font-size: 26px; font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
  font-feature-settings: "tnum";
  letter-spacing: -0.5px;
}
.pulse .pulse-sub {
  font-size: 11px; color: var(--color-text-muted);
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.pulse.success .pulse-value { color: var(--color-success); }
.pulse.warn .pulse-value { color: #b8770a; }
.pulse.error .pulse-value { color: var(--color-error); }
.pulse-icon {
  position: absolute; top: 12px; right: 12px;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.pulse-icon svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pulse.streak .pulse-icon { background: rgba(245, 158, 11, 0.16); color: #d97706; }
.pulse.success .pulse-icon { background: rgba(34, 197, 94, 0.16); color: #16a34a; }
.pulse-goal {
  position: absolute; top: 10px; right: 10px;
  width: 36px; height: 36px;
}
.pulse-goal svg { transform: rotate(-90deg); }
.pulse-goal .rb { fill: none; stroke: rgba(15, 23, 42, 0.08); stroke-width: 8; }
.pulse-goal .rf { fill: none; stroke: var(--color-primary); stroke-width: 8; stroke-linecap: round; transition: stroke-dasharray 400ms ease; }
.pulse-goal.done .rf { stroke: var(--color-success); }
.pulse .pulse-delta {
  font-size: 11px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 2px;
  padding: 1px 6px;
  border-radius: 999px;
}
.pulse .pulse-delta.up { color: var(--color-success); background: rgba(20, 184, 166, 0.14); }
.pulse .pulse-delta.dn { color: var(--color-error); background: rgba(239, 68, 68, 0.12); }

/* Two-column secondary grid */
.dash-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
.dash-grid > .card { padding: 18px 20px; }

/* Spec list collapse / expand */
.spec-list { display: flex; flex-direction: column; gap: 0; }
.spec-list .spec-extras { display: none; }
.spec-list.expanded .spec-extras { display: flex; }
.spec-toggle {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: none;
  padding: 6px 0 0;
  text-align: left;
  cursor: pointer;
  border: none;
}
.spec-toggle:hover { color: var(--color-primary-h); }

.dash-recent .tbl tbody tr:hover { background: rgba(255, 255, 255, 0.5); }

/* ---------- Responsive overrides ---------- */
@media (max-width: 1024px) {
  .smart-hero h1 { font-size: 26px; }
  .pulse-strip { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 900px) {
  .smart-hero { padding: 24px 22px; }
  .smart-hero-inner { grid-template-columns: 1fr; }
  .smart-hero-cta { width: 100%; min-width: 0; }
  .pulse-strip { grid-template-columns: repeat(2, 1fr); }
  .dash-grid { grid-template-columns: 1fr; }
  .auth-shell::before, .auth-shell::after { width: 360px; height: 360px; filter: blur(60px); }
}
@media (max-width: 640px) {
  .smart-hero { padding: 20px 18px; border-radius: 18px; }
  .smart-hero h1 { font-size: 22px; }
  .smart-hero .why { font-size: 13px; }
  .smart-hero-cta .start-btn { padding: 14px 18px; }
  .pulse-strip { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .pulse { padding: 12px 14px; min-height: 88px; }
  .pulse .pulse-value { font-size: 22px; }
  .auth-card { padding: 26px 22px; border-radius: 18px; }
  .auth-tagline h1 { font-size: 22px; }
  .landing-actions .btn { min-width: 0; max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  .auth-shell::before, .auth-shell::after { animation: none; }
  .glass, .card, .stat-tile, .smart-hero-cta .start-btn,
  .pulse, .btn-primary, .btn { transition: none; }
}

/* ============================================================
   BILLING / PRICING — plans, pay methods, PRO badge, cap banner
   ============================================================ */

/* Topbar PRO badge */
.pro-badge {
  display: inline-flex; align-items: center;
  height: 26px; padding: 0 10px;
  font-size: 11px; font-weight: 800;
  letter-spacing: 0.6px;
  border-radius: 999px;
  background: linear-gradient(135deg, #f59e0b 0%, #ef8b1a 50%, #c2410c 100%);
  color: white;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.35);
}
.pro-badge:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(217, 119, 6, 0.42); }

/* Sidebar Upgrade item */
.side-upgrade {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.10), rgba(239, 139, 26, 0.08));
  color: #b45309 !important;
  border: 1px dashed rgba(245, 158, 11, 0.35);
  font-weight: 700;
}
.side-upgrade:hover {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), rgba(239, 139, 26, 0.14)) !important;
  border-color: rgba(245, 158, 11, 0.55);
}
.side-upgrade.is-active-sub {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.10), rgba(20, 184, 166, 0.10));
  color: var(--color-success) !important;
  border-color: rgba(34, 197, 94, 0.35);
}
:root[data-theme="dark"] .side-upgrade { color: #fbbf24 !important; }
:root[data-theme="dark"] .side-upgrade.is-active-sub { color: #34d399 !important; }

/* Pricing grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}
.plan-card {
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--glass-shadow);
  padding: 28px 26px;
  display: flex; flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform 130ms ease, box-shadow 130ms ease;
}
.plan-card:hover { transform: translateY(-2px); box-shadow: var(--glass-shadow-lg); }
.plan-card.is-current { border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12), var(--glass-shadow); }
.plan-card.plan-premium {
  border-color: rgba(245, 158, 11, 0.6);
  background:
    radial-gradient(at 100% 0%, rgba(245, 158, 11, 0.10) 0%, transparent 60%),
    var(--glass-bg-strong);
}
:root[data-theme="dark"] .plan-card.plan-premium {
  border-color: rgba(251, 191, 36, 0.5);
  background:
    radial-gradient(at 100% 0%, rgba(251, 191, 36, 0.16) 0%, transparent 60%),
    var(--glass-bg-strong);
}
.plan-card.plan-premium.is-current {
  border-color: var(--color-success);
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.12), var(--glass-shadow);
}
.plan-tag {
  font-size: 11px; font-weight: 700; letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 8px;
}
.plan-card.is-current .plan-tag { color: var(--color-primary); }
.plan-card.plan-premium .plan-tag { color: #b45309; }
:root[data-theme="dark"] .plan-card.plan-premium .plan-tag { color: #fbbf24; }
.plan-card.plan-premium.is-current .plan-tag { color: var(--color-success); }
.plan-name {
  font-size: 22px; font-weight: 800;
  color: var(--color-text);
  margin-bottom: 12px;
}
.plan-crown { color: #f59e0b; font-size: 18px; vertical-align: -1px; }
.plan-price {
  display: flex; align-items: baseline; gap: 6px;
  margin-bottom: 18px;
}
.plan-price .num {
  font-size: 44px; font-weight: 800; line-height: 1;
  font-feature-settings: "tnum"; letter-spacing: -1px;
  color: var(--color-text);
}
.plan-card.plan-premium .plan-price .num { color: #b45309; }
:root[data-theme="dark"] .plan-card.plan-premium .plan-price .num { color: #fbbf24; }
.plan-price .unit {
  font-size: 13px; font-weight: 600;
  color: var(--color-text-muted);
  display: flex; flex-direction: column;
  line-height: 1.1;
}
.plan-price .unit small { font-size: 11px; font-weight: 500; }
.plan-features {
  list-style: none; padding: 0; margin: 0 0 22px;
  display: flex; flex-direction: column; gap: 8px;
  flex: 1;
}
.plan-features li {
  font-size: 13px; line-height: 1.5;
  color: var(--color-text);
  display: flex; align-items: flex-start; gap: 8px;
}
.plan-features .ck {
  color: var(--color-success); font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.plan-cta { margin-top: auto; }
.plan-cta .btn-block { display: flex; }

/* Payment methods card */
.pay-methods-card { padding: 22px 24px; }
.pay-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.pay-method {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
}
:root[data-theme="dark"] .pay-method { background: rgba(15, 23, 42, 0.5); border-color: rgba(99, 102, 241, 0.18); }
.pay-icon {
  width: 44px; height: 44px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 11px; letter-spacing: 0.5px;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.15);
}
.pay-method strong { font-size: 13px; font-weight: 700; color: var(--color-text); }
.pay-method code {
  font-family: var(--font-mono);
  background: rgba(15, 23, 42, 0.05);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11px;
}
:root[data-theme="dark"] .pay-method code { background: rgba(255, 255, 255, 0.06); }

.pay-steps h4 {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.pay-steps ol {
  margin: 0; padding-left: 22px;
  font-size: 13px; line-height: 1.7;
  color: var(--color-text);
}
.pay-steps ol li { margin-bottom: 4px; }

/* FAQ */
.faq {
  padding: 12px 0;
  border-bottom: 1px dashed rgba(15, 23, 42, 0.08);
}
.faq:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
  color: var(--color-text);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq summary::before {
  content: '+';
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  transition: transform 130ms ease;
}
.faq[open] summary::before { content: '−'; transform: rotate(0); }
.faq p {
  margin: 8px 0 0 26px;
  font-size: 13px; line-height: 1.7;
  color: var(--color-text-muted);
}
:root[data-theme="dark"] .faq { border-bottom-color: rgba(255, 255, 255, 0.08); }

/* Subscription card on profile */
.sub-card.sub-active {
  border-color: rgba(34, 197, 94, 0.45);
  background:
    radial-gradient(at 100% 0%, rgba(34, 197, 94, 0.08) 0%, transparent 60%),
    rgba(255, 255, 255, 0.82);
}
:root[data-theme="dark"] .sub-card.sub-active {
  background:
    radial-gradient(at 100% 0%, rgba(52, 211, 153, 0.10) 0%, transparent 60%),
    rgba(30, 41, 59, 0.66);
}

/* Daily-cap banner on QBank setup */
.daily-cap-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  margin-bottom: 14px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--color-primary);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--glass-shadow);
  flex-wrap: wrap;
}
.daily-cap-banner.is-low { border-left-color: var(--color-warning); }
.daily-cap-banner.is-empty { border-left-color: var(--color-error); }
.daily-cap-banner .dcb-main { flex: 1; min-width: 200px; font-size: 13px; }
.daily-cap-banner .dcb-main strong {
  font-size: 18px; font-weight: 800;
  font-feature-settings: "tnum";
  color: var(--color-primary);
  margin-right: 4px;
}
.daily-cap-banner.is-low .dcb-main strong { color: var(--color-warning); }
.daily-cap-banner.is-empty .dcb-main strong { color: var(--color-error); }
.daily-cap-banner .dcb-bar { flex: 1; min-width: 140px; max-width: 280px; }
:root[data-theme="dark"] .daily-cap-banner { background: rgba(30, 41, 59, 0.6); }

/* Pause / break overlay */
.pause-overlay {
  position: fixed; inset: 0;
  z-index: 90;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  animation: pauseFadeIn 200ms ease;
}
@keyframes pauseFadeIn { from { opacity: 0; } to { opacity: 1; } }
.pause-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 22px;
  padding: 40px 36px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.30);
}
:root[data-theme="dark"] .pause-card {
  background: rgba(30, 41, 59, 0.95);
  border-color: rgba(99, 102, 241, 0.30);
}
.pause-card .pause-icon {
  font-size: 56px;
  margin-bottom: 12px;
  animation: pauseFloat 3s ease-in-out infinite;
}
@keyframes pauseFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.pause-card h2 {
  font-size: 24px; font-weight: 700;
  letter-spacing: -0.4px;
  margin: 0 0 8px;
  color: var(--color-text);
}
.pause-card p {
  font-size: 14px; line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 16px;
  max-width: 360px;
  margin-left: auto; margin-right: auto;
}
.pause-card .pause-elapsed {
  font-size: 12px;
  color: var(--color-text-subtle);
  font-feature-settings: "tnum";
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}
.pause-card .btn { min-width: 180px; }
.pause-card kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--color-text);
  margin: 0 1px;
}
:root[data-theme="dark"] .pause-card kbd {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

/* ============================================================
   QUIZ VIEW — slim progress bar, in-card meta bar, readable legend
   ============================================================ */
.quiz-progress {
  position: sticky;
  top: var(--topbar-h);
  height: 3px;
  background: rgba(15, 23, 42, 0.06);
  margin: -24px -24px 18px;
  z-index: 19;
  overflow: hidden;
}
:root[data-theme="dark"] .quiz-progress { background: rgba(255, 255, 255, 0.06); }
.quiz-progress > i {
  display: block;
  height: 100%;
  background: var(--gradient-cta);
  transition: width 240ms cubic-bezier(.2,.8,.2,1);
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.45);
}

/* Question card — frosted, more spacious */
.q-stem-card {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 22px 26px;
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--glass-shadow);
}
:root[data-theme="dark"] .q-stem-card {
  background: rgba(30, 41, 59, 0.66);
  border-color: rgba(99, 102, 241, 0.18);
}

/* Meta bar inside the card (replaces detached .quiz-bar) */
.q-meta-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.07);
}
:root[data-theme="dark"] .q-meta-bar { border-bottom-color: rgba(255, 255, 255, 0.08); }
.q-meta-bar .qnum {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text);
  font-feature-settings: "tnum";
}
.q-meta-bar .timer {
  background: var(--color-primary-50);
  color: var(--color-primary);
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 600;
  font-feature-settings: "tnum";
  font-family: var(--font-mono);
  font-size: 13px;
}
.q-meta-bar .timer.low { background: var(--color-error-50); color: var(--color-error); }
.q-meta-bar .right { margin-left: auto; display: flex; gap: 4px; align-items: center; }

/* Compact icon button used in the meta bar */
.icon-btn-sm {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 130ms, color 130ms, border-color 130ms;
}
.icon-btn-sm:hover { background: rgba(15, 23, 42, 0.06); color: var(--color-text); }
.icon-btn-sm.on { color: var(--color-warning); }
:root[data-theme="dark"] .icon-btn-sm:hover { background: rgba(99, 102, 241, 0.14); color: var(--color-text); }

/* Hide the rail-toggle on desktop (only shown on tablet/mobile) */
.rail-toggle-btn { display: none !important; }
@media (max-width: 1024px) { .rail-toggle-btn { display: inline-flex !important; } }

/* Source line — only shown if source is real (JS hides "unknown") */
.q-source { margin-bottom: 10px; }

/* Polished options */
.q-option {
  background: rgba(255, 255, 255, 0.55);
  border-color: rgba(15, 23, 42, 0.08);
}
.q-option:hover { background: rgba(255, 255, 255, 0.92); }
:root[data-theme="dark"] .q-option {
  background: rgba(15, 23, 42, 0.55);
  border-color: rgba(99, 102, 241, 0.18);
  color: var(--color-text);
}
:root[data-theme="dark"] .q-option:hover { background: rgba(15, 23, 42, 0.85); }
:root[data-theme="dark"] .q-option.selected { background: rgba(59, 130, 246, 0.22); border-color: var(--color-primary); }
:root[data-theme="dark"] .q-option.correct  { background: rgba(34, 197, 94, 0.18); border-color: var(--color-success); }
:root[data-theme="dark"] .q-option.wrong    { background: rgba(248, 113, 113, 0.18); border-color: var(--color-error); }

/* Navigator legend — fixed dot colors (was using invisible -50 tones) */
.legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 10px;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 12px;
}
.legend > span { display: inline-flex; align-items: center; min-width: 0; }
.legend-bookmark { grid-column: 1 / -1; }
.legend-dot {
  width: 11px; height: 11px;
  border-radius: 3px;
  display: inline-block;
  margin-right: 6px;
  vertical-align: middle;
  flex-shrink: 0;
}
.legend-dot.dot-current   { background: transparent; border: 2px solid var(--color-primary); box-sizing: border-box; }
.legend-dot.dot-answered  { background: var(--color-primary); }
.legend-dot.dot-correct   { background: var(--color-success); }
.legend-dot.dot-wrong     { background: var(--color-error); }
.legend-dot.dot-bookmark  { background: var(--color-warning); }

/* Keyboard shortcut hints in the Tools card */
.kbd-hints {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(15, 23, 42, 0.08);
  font-size: 11px;
  color: var(--color-text-muted);
  display: flex; flex-direction: column; gap: 4px;
}
:root[data-theme="dark"] .kbd-hints { border-top-color: rgba(255, 255, 255, 0.08); }
.kbd-hints strong { color: var(--color-text); font-size: 11px; }
.kbd-hints kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--color-text);
  margin: 0 1px;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.05);
}
:root[data-theme="dark"] .kbd-hints kbd {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(99, 102, 241, 0.22);
}

/* Hide the now-unused .quiz-bar when it does still appear in old DOM (defensive) */
.quiz-bar { display: none; }

/* ============================================================
   QBANK SETUP — quick-start presets, enriched chips, mode icons
   ============================================================ */
.preset-row {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: thin;
}
.preset-card {
  flex: 0 0 auto;
  min-width: 150px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 130ms ease, background 130ms ease, transform 130ms ease, box-shadow 130ms ease;
  display: flex; flex-direction: column; gap: 3px;
  text-align: left;
  font: inherit;
  color: inherit;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.preset-card:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-50);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.12);
}
.preset-card.is-disabled,
.preset-card:disabled { opacity: 0.45; cursor: not-allowed; }
.preset-card .pc-row { display: flex; align-items: center; gap: 6px; }
.preset-card .pc-icon { font-size: 16px; line-height: 1; }
.preset-card .pc-title { font-size: 13px; font-weight: 700; color: var(--color-text); }
.preset-card .pc-meta  { font-size: 11px; color: var(--color-text-muted); white-space: nowrap; }

/* Mode card icon row + time hint */
.radio-card .rc-row { display: flex; align-items: center; gap: 6px; }
.radio-card .rc-emoji { font-size: 16px; line-height: 1; }
.radio-card .rc-time {
  font-size: 11px;
  margin-top: 6px;
  letter-spacing: 0.2px;
}
.radio-card .rc-time-val { color: var(--color-text); font-weight: 600; }

/* Specialty chip user-accuracy mini-badge */
.chip .chip-acc {
  display: inline-block;
  font-feature-settings: "tnum";
  font-weight: 600;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  margin-left: 4px;
  vertical-align: 1px;
}
.chip .chip-acc.good { background: rgba(34, 197, 94, 0.16); color: #15803d; }
.chip .chip-acc.mid  { background: rgba(245, 158, 11, 0.18); color: #b45309; }
.chip .chip-acc.low  { background: rgba(239, 68, 68, 0.16); color: #dc2626; }

/* Subtle pulse for the start button after a preset click */
@keyframes btnPulse {
  0%   { box-shadow: 0 6px 14px rgba(37, 99, 235, 0.22); }
  50%  { box-shadow: 0 0 0 8px rgba(37, 99, 235, 0.18); }
  100% { box-shadow: 0 6px 14px rgba(37, 99, 235, 0.22); }
}
.btn-pulse { animation: btnPulse 600ms ease; }

/* Dark theme overrides for new elements */
:root[data-theme="dark"] .preset-card {
  background: rgba(30, 41, 59, 0.55);
  border-color: rgba(99, 102, 241, 0.18);
}
:root[data-theme="dark"] .preset-card:hover:not(:disabled) {
  background: rgba(59, 130, 246, 0.18);
  border-color: var(--color-primary);
}
:root[data-theme="dark"] .chip .chip-acc      { background: rgba(59, 130, 246, 0.18); color: #93c5fd; }
:root[data-theme="dark"] .chip .chip-acc.good { background: rgba(52, 211, 153, 0.18); color: #6ee7b7; }
:root[data-theme="dark"] .chip .chip-acc.mid  { background: rgba(251, 191, 36, 0.18); color: #fcd34d; }
:root[data-theme="dark"] .chip .chip-acc.low  { background: rgba(248, 113, 113, 0.18); color: #fca5a5; }

@media (max-width: 640px) {
  .preset-card { min-width: 140px; }
}

/* ============================================================
   THEME TOGGLE — fixed top-right pill, always visible
   ============================================================ */
.theme-toggle {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 80;
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.10);
  color: var(--color-text);
  cursor: pointer;
  transition: transform 130ms ease, background 130ms ease;
}
.theme-toggle:hover { transform: scale(1.06); background: rgba(255, 255, 255, 0.92); }
.theme-toggle svg {
  width: 18px; height: 18px;
  fill: none; stroke: currentColor; stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round;
}
/* When the topbar is visible, hide the fixed toggle and use the inline one instead */
.app:not([data-no-shell="true"]) ~ .theme-toggle { display: none; }

/* Inline toggle inside .topbar-right */
.theme-toggle-inline {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--color-text-muted);
  transition: background 130ms ease, color 130ms ease, transform 130ms ease;
}
.theme-toggle-inline:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
  transform: scale(1.06);
}
.theme-toggle-inline svg {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor; stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round;
}
:root[data-theme="dark"] .theme-toggle-inline:hover {
  background: rgba(99, 102, 241, 0.14);
  color: var(--color-text);
}

/* ============================================================
   DARK THEME — opt-in via [data-theme="dark"] on <html>
   ============================================================ */
:root[data-theme="dark"] {
  --color-primary:      #3b82f6;
  --color-primary-h:    #60a5fa;
  --color-primary-50:   rgba(59, 130, 246, 0.15);
  --color-primary-100:  rgba(59, 130, 246, 0.25);
  --color-primary-200:  rgba(59, 130, 246, 0.40);
  --color-primary-400:  #60a5fa;
  --color-accent:       #818cf8;
  --color-accent-50:    rgba(129, 140, 248, 0.15);
  --color-bg:           #0b1220;
  --color-surface:      #1e293b;
  --color-surface-2:    #182033;
  --color-border:       #334155;
  --color-border-soft:  #1f2937;
  --color-text:         #e2e8f0;
  --color-text-muted:   #94a3b8;
  --color-text-subtle:  #64748b;
  --color-success:      #34d399;
  --color-success-50:   rgba(52, 211, 153, 0.15);
  --color-error:        #f87171;
  --color-error-50:     rgba(248, 113, 113, 0.15);
  --color-warning:      #fbbf24;
  --color-warning-50:   rgba(251, 191, 36, 0.15);
  --color-highlight:    #475569;

  --glass-bg:           rgba(30, 41, 59, 0.55);
  --glass-bg-strong:    rgba(30, 41, 59, 0.78);
  --glass-border:       rgba(99, 102, 241, 0.18);
  --glass-border-strong:rgba(99, 102, 241, 0.30);
  --glass-shadow:       0 12px 36px rgba(0, 0, 0, 0.40), 0 2px 8px rgba(0, 0, 0, 0.20);
  --glass-shadow-lg:    0 22px 52px rgba(0, 0, 0, 0.50), 0 4px 12px rgba(0, 0, 0, 0.30);
  --gradient-mesh:
    radial-gradient(at 12% 18%, rgba(59, 130, 246, 0.22) 0%, transparent 50%),
    radial-gradient(at 88% 12%, rgba(139, 92, 246, 0.20) 0%, transparent 50%),
    radial-gradient(at 78% 86%, rgba(37, 99, 235, 0.20) 0%, transparent 55%),
    radial-gradient(at 18% 92%, rgba(99, 102, 241, 0.18) 0%, transparent 55%);
  --gradient-cta:       linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #6366f1 130%);
}

:root[data-theme="dark"] body {
  background:
    var(--gradient-mesh),
    linear-gradient(180deg, #0b1220 0%, #050811 100%);
  color: var(--color-text);
}

/* Shell chrome */
:root[data-theme="dark"] .sidebar { background: rgba(20, 28, 46, 0.78); border-right-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .topbar  { background: rgba(20, 28, 46, 0.75); border-bottom-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .bottom-tabs { background: rgba(20, 28, 46, 0.85); border-top-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .topbar-search { background: rgba(15, 23, 42, 0.7); border-color: rgba(99, 102, 241, 0.22); }
:root[data-theme="dark"] .topbar-search:focus-within { background: rgba(15, 23, 42, 0.95); }
:root[data-theme="dark"] .side-item:hover { background: rgba(99, 102, 241, 0.10); color: var(--color-text); }
:root[data-theme="dark"] .side-item.active { background: rgba(59, 130, 246, 0.18); box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.30); }

/* Cards / tiles */
:root[data-theme="dark"] .card,
:root[data-theme="dark"] .stat-tile,
:root[data-theme="dark"] .pulse,
:root[data-theme="dark"] .smart-hero {
  background: rgba(30, 41, 59, 0.62);
  border-color: rgba(99, 102, 241, 0.18);
}
:root[data-theme="dark"] .smart-hero { background: rgba(30, 41, 59, 0.74); }
:root[data-theme="dark"] .smart-hero::before {
  background:
    radial-gradient(at 88% -20%, rgba(99, 102, 241, 0.30) 0%, transparent 55%),
    radial-gradient(at -10% 110%, rgba(59, 130, 246, 0.24) 0%, transparent 55%);
}

/* Auth */
:root[data-theme="dark"] .auth-card {
  background: rgba(30, 41, 59, 0.78);
  border-color: rgba(99, 102, 241, 0.22);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.50), 0 4px 12px rgba(0, 0, 0, 0.30);
}
:root[data-theme="dark"] .auth-card .input {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(99, 102, 241, 0.20);
  color: var(--color-text);
}
:root[data-theme="dark"] .auth-card .input:focus {
  background: rgba(15, 23, 42, 0.95);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.20);
}
:root[data-theme="dark"] .auth-card .btn-secondary {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(99, 102, 241, 0.22);
  color: var(--color-text);
}
:root[data-theme="dark"] .auth-card .auth-reassure { border-top-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .auth-tagline h1 {
  background: linear-gradient(135deg, #93c5fd 0%, #a5b4fc 60%, #c7d2fe 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
:root[data-theme="dark"] .auth-shell::before { background: radial-gradient(circle, rgba(59, 130, 246, 0.55) 0%, transparent 70%); }
:root[data-theme="dark"] .auth-shell::after  { background: radial-gradient(circle, rgba(139, 92, 246, 0.50) 0%, transparent 70%); }
:root[data-theme="dark"] .landing-pill {
  background: rgba(30, 41, 59, 0.65);
  border-color: rgba(99, 102, 241, 0.22);
  color: var(--color-text);
}

/* Inputs (general) */
:root[data-theme="dark"] .input,
:root[data-theme="dark"] .select,
:root[data-theme="dark"] .textarea {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(99, 102, 241, 0.20);
  color: var(--color-text);
}

/* Heatmap cells */
:root[data-theme="dark"] .heatmap .cell {
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.12);
}
:root[data-theme="dark"] .heatmap .cell.l1 { background: rgba(59, 130, 246, 0.30); }
:root[data-theme="dark"] .heatmap .cell.l2 { background: rgba(59, 130, 246, 0.50); }
:root[data-theme="dark"] .heatmap .cell.l3 { background: rgba(59, 130, 246, 0.75); }
:root[data-theme="dark"] .heatmap .cell.l4 { background: #3b82f6; }

/* Bars */
:root[data-theme="dark"] .bar { background: rgba(99, 102, 241, 0.12); }

/* Tables */
:root[data-theme="dark"] .tbl th { color: var(--color-text-subtle); border-bottom-color: var(--color-border); }
:root[data-theme="dark"] .tbl tr td { border-bottom-color: var(--color-border-soft); }
:root[data-theme="dark"] .tbl tbody tr:hover,
:root[data-theme="dark"] .dash-recent .tbl tbody tr:hover { background: rgba(99, 102, 241, 0.08); }

/* Theme toggle (dark) */
:root[data-theme="dark"] .theme-toggle {
  background: rgba(30, 41, 59, 0.78);
  border-color: rgba(99, 102, 241, 0.25);
  color: var(--color-text);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.40);
}
:root[data-theme="dark"] .theme-toggle:hover { background: rgba(30, 41, 59, 0.95); }

/* Misc surface bumps */
:root[data-theme="dark"] hr { border-top-color: var(--color-border); }
:root[data-theme="dark"] .badge { background: rgba(99, 102, 241, 0.10); color: var(--color-text-muted); border-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .chip { background: rgba(30, 41, 59, 0.65); border-color: rgba(99, 102, 241, 0.20); color: var(--color-text-muted); }
:root[data-theme="dark"] .chip.active { background: rgba(59, 130, 246, 0.20); border-color: rgba(59, 130, 246, 0.45); color: var(--color-primary-h); }
:root[data-theme="dark"] .resume-card { background: linear-gradient(135deg, #1d4ed8, #2563eb); }
:root[data-theme="dark"] .empty-icon { background: rgba(59, 130, 246, 0.18); color: var(--color-primary-h); }
:root[data-theme="dark"] .q-stem-card { background: rgba(30, 41, 59, 0.74); border-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .q-option { background: rgba(15, 23, 42, 0.7); border-color: rgba(99, 102, 241, 0.18); }
:root[data-theme="dark"] .q-option:hover { background: rgba(15, 23, 42, 0.92); }
:root[data-theme="dark"] .q-explanation { background: rgba(15, 23, 42, 0.6); }
:root[data-theme="dark"] .modal { background: var(--color-surface); color: var(--color-text); }
:root[data-theme="dark"] .toast { background: var(--color-surface); }
:root[data-theme="dark"] ::selection { background: rgba(59, 130, 246, 0.40); color: white; }

/* ================================================================
   ADMIN PANEL
   ================================================================ */

/* Admin header */
.admin-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.admin-header h1 { margin-bottom: 2px; }
.admin-header .muted { font-size: 13px; }
.admin-header-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Admin sidebar link */
.side-admin {
  color: var(--color-warning) !important;
  font-weight: 600 !important;
}
.side-admin:hover {
  background: var(--color-warning-50) !important;
}
.side-admin.active {
  background: var(--color-warning-50) !important;
  color: var(--color-warning) !important;
  box-shadow: inset 0 0 0 1px rgba(217, 119, 6, 0.25) !important;
}
.side-admin .i { opacity: 1 !important; }

/* Admin specialty row */
.admin-spec-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--color-border-soft);
}
.admin-spec-row:last-child { border-bottom: none; }

/* Admin license row */
.admin-license-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--color-border-soft);
}
.admin-license-row:last-child { border-bottom: none; }
.admin-license-row code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-primary-50);
  padding: 2px 6px;
  border-radius: var(--radius-1);
}

/* Admin question card */
.admin-q-card {
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-3);
  padding: var(--space-3);
  margin-bottom: var(--space-2);
  background: var(--color-surface-2);
}
.admin-q-options {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}
.admin-q-options div {
  padding: 4px 8px;
  border-radius: var(--radius-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
}
.admin-q-options div.correct {
  background: var(--color-success-50);
  border-color: var(--color-success);
  font-weight: 600;
}

/* Admin code copy cursor */
.admin-code-copy {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-primary-50);
  padding: 2px 6px;
  border-radius: var(--radius-1);
  transition: background 120ms;
}
.admin-code-copy:hover {
  background: var(--color-primary-100);
}

/* Success button variant */
.btn-success {
  background: var(--color-success);
  color: white;
  border: none;
  border-radius: var(--radius-2);
  font-weight: 600;
}
.btn-success:hover {
  background: #12703a;
}

/* Danger button variant */
.btn-danger {
  background: var(--color-error);
  color: white;
  border: none;
  border-radius: var(--radius-2);
  font-weight: 600;
}
.btn-danger:hover {
  background: #9a1e15;
}

/* Danger zone card */
.danger-zone {
  border-color: rgba(180, 35, 24, 0.25);
}

/* Badge warn variant */
.badge-warn {
  background: var(--color-warning-50);
  color: var(--color-warning);
  border-color: rgba(217, 119, 6, 0.2);
}

/* Dark mode admin overrides */
:root[data-theme="dark"] .admin-q-card {
  background: rgba(30, 41, 59, 0.5);
  border-color: rgba(99, 102, 241, 0.15);
}
:root[data-theme="dark"] .admin-q-options div {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(99, 102, 241, 0.15);
}
:root[data-theme="dark"] .admin-q-options div.correct {
  background: rgba(21, 128, 61, 0.2);
  border-color: rgba(21, 128, 61, 0.4);
}
:root[data-theme="dark"] .admin-code-copy {
  background: rgba(59, 130, 246, 0.15);
}
:root[data-theme="dark"] .admin-code-copy:hover {
  background: rgba(59, 130, 246, 0.25);
}
:root[data-theme="dark"] .admin-license-row code {
  background: rgba(59, 130, 246, 0.15);
}
:root[data-theme="dark"] .side-admin {
  color: #f59e0b !important;
}
:root[data-theme="dark"] .side-admin:hover {
  background: rgba(245, 158, 11, 0.12) !important;
}
:root[data-theme="dark"] .side-admin.active {
  background: rgba(245, 158, 11, 0.15) !important;
  box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.30) !important;
}
:root[data-theme="dark"] .danger-zone {
  border-color: rgba(180, 35, 24, 0.35);
}
:root[data-theme="dark"] .badge-warn {
  background: rgba(217, 119, 6, 0.15);
  color: #fbbf24;
  border-color: rgba(217, 119, 6, 0.25);
}

/* ============ Question ID label ============ */
.q-id-label {
  font-size: 11px;
  font-family: var(--font-mono, 'Courier New', monospace);
  color: var(--color-text-muted);
  background: var(--color-bg-soft, rgba(0,0,0,0.05));
  padding: 1px 6px;
  border-radius: 4px;
  letter-spacing: 0.3px;
  white-space: nowrap;
  user-select: all;
  cursor: pointer;
}
.q-id-label:hover {
  background: var(--color-primary-soft, rgba(37, 99, 235, 0.1));
  color: var(--color-primary);
}

/* ============ Difficulty badge ============ */
.badge-danger {
  background: rgba(220, 38, 38, 0.08);
  color: #dc2626;
  border: 1px solid rgba(220, 38, 38, 0.2);
}
:root[data-theme="dark"] .badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.25);
}

/* ============ User note display ============ */
.q-user-note {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.06), rgba(234, 179, 8, 0.03));
  border: 1px solid rgba(250, 204, 21, 0.25);
  font-size: 13px;
  line-height: 1.6;
}
.q-user-note-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.q-user-note-body {
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--color-text);
}
:root[data-theme="dark"] .q-user-note {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.04), rgba(234, 179, 8, 0.02));
  border-color: rgba(250, 204, 21, 0.15);
}

/* ============ Note/Report tool button active state ============ */
.icon-btn-sm.on {
  color: var(--color-primary);
  background: var(--color-primary-soft, rgba(37, 99, 235, 0.08));
}
.tool.on {
  background: var(--color-primary-soft, rgba(37, 99, 235, 0.1));
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ============ Modal backdrop and content ============ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.15s ease;
}
.modal {
  background: var(--color-bg, #fff);
  border-radius: 12px;
  padding: 24px;
  max-width: 480px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
:root[data-theme="dark"] .modal {
  background: var(--color-bg, #1a1f2e);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
}