/* =========================================================
   BrainEtch — dashboard.css
   Shared styles for the Review/Schedule and Stats screens.
   Both share the .dashboard-screen / .dashboard-card vocabulary.
   ========================================================= */

.dashboard-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--bg-base);
  overflow: hidden;
}

.dashboard-head {
  padding: 28px 32px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-base);
  flex-shrink: 0;
}
.dashboard-head h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 30px;
  letter-spacing: -0.035em;
  margin: 0;
  color: var(--text-primary);
}
.dashboard-head .dashboard-sub {
  margin: 6px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.dashboard-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.dashboard-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 32px 100px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.dashboard-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.dashboard-card .card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}
.dashboard-card .card-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.dashboard-card .card-head .card-sub {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-placeholder);
  text-align: right;
}
.dashboard-card .empty-mini {
  color: var(--text-secondary);
  font-size: 13px;
}
.dashboard-card .empty-mini a {
  color: var(--accent-bright);
  cursor: pointer;
  text-decoration: underline;
}

/* ---------- Review-specific ---------- */
.hero-card {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-bright);
  background: linear-gradient(135deg, rgba(212,146,42,0.18), rgba(212,146,42,0.06));
}
.hero-card.hero-due {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(212,146,42,0.28), rgba(212,146,42,0.10));
  box-shadow: 0 8px 28px rgba(212,146,42,0.18);
}
.hero-card.hero-clear {
  background: linear-gradient(135deg, rgba(76,175,96,0.16), rgba(76,175,96,0.04));
  border-color: rgba(76,175,96,0.5);
}
.hero-card.hero-empty {
  background: linear-gradient(135deg, rgba(74,138,191,0.14), rgba(74,138,191,0.04));
  border-color: rgba(74,138,191,0.45);
}
.hero-card .hero-left { flex: 1; min-width: 0; }
.hero-card .hero-num {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent-bright);
}
.hero-card .hero-num.small { font-size: 28px; color: var(--text-primary); }
.hero-card .hero-emoji {
  font-size: 38px;
  line-height: 1;
  margin-bottom: 6px;
}
.hero-card .hero-lbl {
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  font-weight: 500;
}
.hero-card .hero-sub {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}
.btn.btn-lg {
  padding: 14px 22px;
  font-size: 15px;
  font-weight: 600;
}

.bucket-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.bucket-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}
.bucket-card .bucket-num {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}
.bucket-card .bucket-lbl {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}
.cal-cell {
  aspect-ratio: 1 / 1.05;
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px;
  position: relative;
  transition: border-color .15s, transform .15s;
}
.cal-cell.today {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(212,146,42,0.18);
}
.cal-cell.hot {
  background: rgba(212,146,42, calc(0.15 + var(--cal-i, 0) * 0.45));
  border-color: rgba(212,146,42, calc(0.35 + var(--cal-i, 0) * 0.5));
}
.cal-cell .cal-dow {
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.cal-cell .cal-date {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}
.cal-cell .cal-count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-bright);
  min-height: 14px;
  line-height: 1;
}
.cal-cell.hot .cal-count { color: var(--accent-bright); }
.cal-cell:not(.hot) .cal-count { color: var(--text-placeholder); }

.review-session-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.review-session-row {
  display: grid;
  grid-template-columns: 1fr 100px 16px;
  align-items: center;
  gap: 16px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: var(--bg-base);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  color: var(--text-primary);
  transition: border-color .15s, transform .12s;
}
.review-session-row:hover {
  border-color: var(--border-bright);
  transform: translateY(-1px);
}
.review-session-row .rsr-title {
  font-weight: 600;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.review-session-row .rsr-sub {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 3px;
}
.review-session-row .rsr-sub b.due { color: var(--accent-bright); }
.review-session-row .rsr-bars {
  display: flex;
  gap: 2px;
  height: 6px;
  background: var(--bg-raised);
  border-radius: 3px;
  overflow: hidden;
}
.review-session-row .rsr-bar { display: block; height: 100%; }
.review-session-row .rsr-bar.bar-due { background: var(--accent-bright); }
.review-session-row .rsr-bar.bar-upcoming { background: rgba(74,138,191,0.5); }
.review-session-row .rsr-arrow {
  font-size: 22px;
  color: var(--text-placeholder);
  text-align: right;
  font-weight: 300;
  line-height: 1;
}

.explainer-card .explainer-body,
.explainer-card .explainer-foot {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-secondary);
}
.explainer-card .explainer-body b { color: var(--text-primary); }
.ladder {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 4px;
  align-items: end;
  padding: 6px 0;
}
.ladder .rung {
  text-align: center;
  padding: 8px 4px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
  border: 1px solid var(--border);
  background: var(--bg-raised);
}
.ladder .rung-d { font-weight: 600; }
.ladder .rung-sub {
  font-family: var(--font-body);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-placeholder);
  margin-top: 2px;
}
.ladder .rung-reset { background: rgba(139,58,58,0.18); border-color: rgba(201,74,74,0.4); }
.ladder .rung-short { background: rgba(212,146,42,0.18); border-color: rgba(212,146,42,0.4); }
.ladder .rung-mid   { background: rgba(212,146,42,0.28); border-color: rgba(212,146,42,0.5); }
.ladder .rung-long  { background: rgba(76,175,96,0.18); border-color: rgba(76,175,96,0.4); }
.ladder .rung-longer{ background: rgba(74,138,191,0.18); border-color: rgba(74,138,191,0.45); }

/* ---------- Stats-specific ---------- */
.streak-hero {
  text-align: center;
  padding: 30px 22px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(ellipse at top, rgba(212,146,42,0.18), transparent 60%),
    var(--bg-surface);
  position: relative;
  overflow: hidden;
}
.streak-hero.lit::before {
  content: '';
  position: absolute;
  inset: -40% -40% auto -40%;
  height: 200%;
  background: radial-gradient(ellipse at top, rgba(212,146,42,0.25), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.streak-hero > * { position: relative; z-index: 1; }
.streak-flame {
  font-size: 52px;
  line-height: 1;
  filter: drop-shadow(0 4px 14px rgba(212,146,42,0.5));
}
.streak-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 88px;
  line-height: 0.9;
  letter-spacing: -0.045em;
  color: var(--accent-bright);
  margin-top: 4px;
}
.streak-lbl {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-top: 4px;
}
.streak-sub {
  margin-top: 14px;
  color: var(--text-primary);
  font-size: 14px;
}
.streak-best {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-placeholder);
}

.stat-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.stat-tile {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  text-align: center;
}
.stat-tile .t-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}
.stat-tile .t-num.accent { color: var(--accent-bright); }
.stat-tile .t-num .of {
  font-size: 14px;
  color: var(--text-placeholder);
  font-weight: 500;
  margin-left: 2px;
}
.stat-tile .t-lbl {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  line-height: 1.3;
}

.mastery-bar {
  display: flex;
  height: 32px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-raised);
}
.mastery-bar .seg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: rgba(0,0,0,0.7);
  min-width: 0;
  transition: flex 0.4s;
}
.seg-mastered { background: linear-gradient(180deg, #5fc578, #3a7d44); color: #0a1f10; }
.seg-amber    { background: linear-gradient(180deg, var(--accent-bright), var(--accent)); color: #2b1a05; }
.seg-orange   { background: linear-gradient(180deg, #e19a5a, #b87a3a); color: #2b1a05; }
.seg-fresh    { background: var(--bg-raised-2); color: var(--text-secondary); }

.mastery-legend {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.mastery-legend .leg-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-primary);
}
.mastery-legend .leg-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}
.mastery-legend .leg-lbl { color: var(--text-secondary); }
.mastery-legend .leg-n {
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-weight: 600;
}

.week-bars {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  align-items: end;
  height: 160px;
}
.wb-col {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  height: 100%;
  gap: 6px;
}
.wb-track {
  flex: 1;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  min-height: 24px;
}
.wb-fill {
  background: linear-gradient(180deg, var(--accent-bright), var(--accent));
  width: 100%;
  transition: height 0.5s ease-out;
  min-height: 0;
}
.wb-col.has .wb-track { border-color: var(--accent); }
.wb-col.today .wb-track {
  box-shadow: 0 0 0 2px rgba(212,146,42,0.18);
}
.wb-num {
  position: absolute;
  top: 4px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}
.wb-day {
  text-align: center;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.wb-col.today .wb-day { color: var(--accent-bright); font-weight: 600; }

.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.badge {
  border: 1px solid var(--border);
  background: var(--bg-base);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.badge.unlocked {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(212,146,42,0.16), rgba(212,146,42,0.04));
  box-shadow: 0 6px 18px rgba(212,146,42,0.18);
}
.badge.locked {
  opacity: 0.55;
  filter: grayscale(0.8);
}
.badge .badge-emoji {
  font-size: 30px;
  line-height: 1;
}
.badge .badge-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.badge .badge-sub {
  font-size: 10.5px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  line-height: 1.3;
}
.badge .badge-state {
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-placeholder);
  margin-top: 4px;
}
.badge.unlocked .badge-state {
  color: var(--accent-bright);
  font-weight: 600;
}

.recent-list { display: flex; flex-direction: column; gap: 6px; }
.recent-row {
  display: grid;
  grid-template-columns: 1fr auto 16px;
  align-items: center;
  gap: 14px;
  padding: 10px 12px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  color: var(--text-primary);
  transition: border-color .15s;
}
.recent-row:hover { border-color: var(--border-bright); }
.recent-row .rr-title {
  font-size: 13px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.recent-row .rr-meta {
  font-size: 11px;
  color: var(--text-secondary);
}
.recent-row .rr-arrow {
  color: var(--text-placeholder);
  font-size: 18px;
  text-align: right;
}

/* ---------- Mobile ---------- */
@media (max-width: 700px) {
  .dashboard-head { padding: 14px 16px 8px; }
  .dashboard-head h1 { font-size: 22px; }
  .dashboard-head .dashboard-sub { font-size: 12px; }
  .dashboard-inner { padding: 14px 14px 100px; gap: 14px; }
  .dashboard-card { padding: 16px 14px; gap: 12px; }
  .dashboard-card .card-head h3 { font-size: 15px; }
  .dashboard-card .card-head .card-sub { font-size: 10px; }

  .hero-card { padding: 18px 16px; gap: 14px; flex-wrap: wrap; }
  .hero-card .hero-num { font-size: 42px; }
  .hero-card .hero-num.small { font-size: 22px; }
  .hero-card .btn { width: 100%; }
  .btn.btn-lg { padding: 12px 18px; font-size: 14px; }

  .bucket-row { gap: 8px; }
  .bucket-card { padding: 12px 8px; }
  .bucket-card .bucket-num { font-size: 22px; }
  .bucket-card .bucket-lbl { font-size: 9px; }

  .cal-grid { gap: 5px; }
  .cal-cell { padding: 5px 2px; }
  .cal-cell .cal-date { font-size: 14px; }
  .cal-cell .cal-dow { font-size: 8.5px; }
  .cal-cell .cal-count { font-size: 10px; }

  .review-session-row { grid-template-columns: 1fr 60px 14px; padding: 10px 12px; gap: 10px; }
  .review-session-row .rsr-title { font-size: 13px; }
  .review-session-row .rsr-sub { font-size: 10px; }

  .ladder { grid-template-columns: repeat(5, 1fr); }
  .ladder .rung { font-size: 11px; padding: 6px 2px 4px; }

  .streak-hero { padding: 20px 14px 18px; }
  .streak-flame { font-size: 40px; }
  .streak-num { font-size: 64px; }
  .streak-lbl { font-size: 10px; }
  .streak-sub { font-size: 13px; }

  .stat-tiles { grid-template-columns: repeat(2, 1fr); }
  .stat-tile .t-num { font-size: 22px; }

  .mastery-bar { height: 28px; }
  .mastery-legend { grid-template-columns: repeat(2, 1fr); }

  .week-bars { height: 130px; gap: 5px; }
  .wb-day { font-size: 9px; }

  .badge-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .badge { padding: 12px 8px; }
  .badge .badge-emoji { font-size: 24px; }
  .badge .badge-name { font-size: 12px; }
  .badge .badge-sub { font-size: 10px; }
}