/* ── Strategy Board (Study Priority page) ──────────────────────────── */

.sb-page {
  padding-bottom: var(--spacing-2xl);
}

/* Header + stat strip */
.sb-header {
  margin-bottom: var(--spacing-lg);
}
.sb-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.4rem, 4.4vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
}
.sb-subtitle {
  margin: 6px 0 var(--spacing-md);
  font-size: 0.92rem;
  color: var(--text-muted);
  font-style: italic;
}
.sb-stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}
.sb-stat {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  min-height: 84px;
}
.sb-stat-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.sb-stat-label {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.sb-stat-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-countdown-num,
.sb-big-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1;
  flex-shrink: 0;
}
.sb-gauge-svg { flex-shrink: 0; }

/* Toolbar */
.sb-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}
.sb-search {
  flex: 1;
  min-width: 220px;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-family: inherit;
}
.sb-search:focus { outline: none; border-color: var(--accent); }
.sb-pills {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px;
}
.sb-pill {
  padding: 5px 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 100px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}
.sb-pill:hover { color: var(--text-primary); }
.sb-pill--active {
  background: var(--accent);
  color: #fff;
}
.sb-pill--active:hover { color: #fff; }

/* Main grid: matrix + right rail */
.sb-main-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--spacing-md);
  align-items: start;
}

/* Matrix card */
.sb-matrix-card {
  display: grid;
  grid-template-columns: 32px 1fr;
  grid-template-rows: 1fr 26px auto;
  gap: 8px 10px;
  padding: var(--spacing-lg);
}
.sb-axis-y {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 8px 0;
}
.sb-axis-y .sb-axis-label { writing-mode: vertical-rl; text-orientation: mixed; transform: rotate(180deg); text-align: center; }
.sb-axis-y .sb-axis-arrow { font-size: 1rem; opacity: 0.5; }
.sb-axis-x {
  grid-column: 2;
  grid-row: 2;
  display: flex;
  justify-content: space-between;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0 8px;
}
.sb-matrix {
  grid-column: 2;
  grid-row: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 10px;
}

/* Quadrant */
.sb-quadrant {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 12px 14px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.sb-quadrant::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--tier-color, var(--text-muted)) 0%, color-mix(in srgb, var(--tier-color, var(--text-muted)) 30%, transparent) 60%, transparent 100%);
  pointer-events: none;
}
.sb-quadrant--quick-wins   { --tier-color: var(--accent); }
.sb-quadrant--heavyweights { --tier-color: var(--warning); }
.sb-quadrant--small-wins   { --tier-color: var(--text-secondary); }
.sb-quadrant--low-roi      { --tier-color: var(--text-muted); }
.sb-quadrant--quick-wins {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 14%, var(--bg-secondary)) 0%, var(--bg-secondary) 60%),
    var(--bg-secondary);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 20%, transparent),
              0 12px 32px color-mix(in srgb, var(--accent) 10%, transparent);
}
.sb-quadrant--heavyweights {
  border-color: color-mix(in srgb, var(--warning) 28%, var(--border));
}
.sb-quadrant--small-wins {
  opacity: 0.92;
}
.sb-quadrant--low-roi {
  opacity: 0.6;
  filter: saturate(0.7);
}
.sb-quadrant--low-roi:hover { opacity: 0.9; filter: none; }

.sb-quadrant-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.sb-quadrant-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--text-secondary);
}
.sb-quadrant-icon svg { width: 100%; height: 100%; }
.sb-quadrant--quick-wins .sb-quadrant-icon { color: var(--accent); }
.sb-quadrant--heavyweights .sb-quadrant-icon { color: var(--warning); }
.sb-quadrant--small-wins .sb-quadrant-icon { color: var(--text-secondary); }
.sb-quadrant--low-roi .sb-quadrant-icon { color: var(--text-muted); }
.sb-quadrant-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.005em;
}
.sb-quadrant-count {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-input);
  border-radius: 100px;
  padding: 2px 8px;
}
.sb-quadrant-kicker {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-style: italic;
  margin-left: auto;
}

/* Per-quadrant mastery progress (under header) */
.sb-quadrant-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  cursor: help;
}
.sb-quadrant-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.sb-quadrant-progress-bar > span {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: var(--success);
  transition: width 0.4s ease;
}
.sb-quadrant--quick-wins .sb-quadrant-progress-bar > span { background: var(--accent); }
.sb-quadrant--heavyweights .sb-quadrant-progress-bar > span { background: var(--warning); }
.sb-quadrant--small-wins .sb-quadrant-progress-bar > span { background: var(--text-secondary); }
.sb-quadrant--low-roi .sb-quadrant-progress-bar > span { background: var(--text-muted); }
.sb-quadrant-progress-stat {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Chip grid */
.sb-chip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 5px;
  align-content: start;
}
.sb-chip {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 5px 8px 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 7px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-primary);
  transition: transform 0.12s, background 0.15s, border-color 0.15s, opacity 0.15s;
  min-height: 30px;
  animation: sb-chip-in 0.32s cubic-bezier(0.16, 1, 0.3, 1) backwards;
  animation-delay: calc(var(--chip-i, 0) * 8ms);
}
@keyframes sb-chip-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .sb-chip { animation: none; }
}
.sb-chip-recent-dot {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 2px var(--bg-card), 0 0 6px color-mix(in srgb, var(--accent) 60%, transparent);
}
.sb-chip--mastered .sb-chip-recent-dot { box-shadow: 0 0 0 2px color-mix(in srgb, var(--success) 8%, var(--bg-card)), 0 0 6px color-mix(in srgb, var(--accent) 60%, transparent); }
.sb-chip:hover {
  background: var(--bg-card-hover);
  transform: translateY(-1px);
}
.sb-chip-name {
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-chip-bar {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  display: block;
}
.sb-chip-bar > span {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: var(--text-muted);
  transition: width 0.3s ease;
}
.sb-chip--untouched { border-left-color: var(--text-muted); }
.sb-chip--untouched .sb-chip-name { color: var(--text-secondary); }
.sb-chip--untouched .sb-chip-bar > span { background: var(--text-muted); }
.sb-chip--weak { border-left-color: var(--error); }
.sb-chip--weak .sb-chip-bar > span { background: var(--error); }
.sb-chip--growing { border-left-color: var(--warning); }
.sb-chip--growing .sb-chip-bar > span { background: var(--warning); }
.sb-chip--mastered { border-left-color: var(--success); background: color-mix(in srgb, var(--success) 8%, var(--bg-card)); }
.sb-chip--mastered .sb-chip-bar > span { background: var(--success); }
.sb-chip--dim { opacity: 0.18; pointer-events: none; }

/* Per-quadrant collapse */
.sb-quadrant--collapsed:not(.sb-quadrant--filter-active) .sb-chip-grid > .sb-chip:nth-child(n+15) {
  display: none;
}
.sb-quadrant-toggle {
  margin-top: 8px;
  align-self: center;
  background: transparent;
  border: 1px dashed var(--border-light);
  border-radius: 100px;
  padding: 4px 14px;
  font-size: 0.72rem;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.sb-quadrant-toggle:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border); }
.sb-toggle-hint { color: var(--text-muted); font-weight: 500; margin-left: 4px; }
.sb-quadrant--filter-active .sb-quadrant-toggle { display: none; }

/* Legend */
.sb-legend {
  grid-column: 2;
  grid-row: 3;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: 8px 8px 0;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}
.sb-legend-item { display: inline-flex; align-items: center; gap: 6px; }
.sb-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
}
.sb-legend-dot--untouched { background: var(--text-muted); }
.sb-legend-dot--weak { background: var(--error); }
.sb-legend-dot--growing { background: var(--warning); }
.sb-legend-dot--mastered { background: var(--success); }

/* Right rail */
.sb-rail {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  position: sticky;
  top: calc(var(--nav-height) + 8px);
}
.sb-rail-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}
.sb-eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.sb-rail-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Today's Run */
.sb-run-card { padding: var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) + 4px); }
.sb-run-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.sb-run-step {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
  align-items: center;
}
.sb-run-step:first-child { border-top: none; padding-top: 4px; }
.sb-run-num {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  text-align: center;
}
.sb-run-body { min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.sb-run-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.sb-run-tag-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}
.sb-run-tag-icon svg { width: 100%; height: 100%; }
.sb-run-step--warmup   .sb-run-tag-icon { color: var(--warning); }
.sb-run-step--main     .sb-run-tag-icon { color: var(--accent); }
.sb-run-step--cooldown .sb-run-tag-icon { color: var(--text-secondary); }
.sb-run-name {
  font-weight: 700;
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-run-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
}
.sb-run-actions { display: flex; gap: 4px; align-items: center; flex-shrink: 0; }
.sb-run-start { padding: 5px 10px; font-size: 0.78rem; }
.btn-ghost-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.95rem;
  font-family: inherit;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-ghost-icon:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border-light); }
.sb-run-empty {
  padding: var(--spacing-md);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}
.sb-run-total {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 8px;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: right;
  letter-spacing: 0.04em;
  list-style: none;
}

/* Coverage card */
.sb-coverage-card { padding: var(--spacing-md); }
.sb-coverage-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}
.sb-coverage-row:first-of-type { border-top: none; padding-top: 0; }
.sb-coverage-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.sb-coverage-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.sb-coverage-bar > span {
  display: block;
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}
.sb-coverage-stat {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.sb-coverage-stat strong { color: var(--text-primary); font-weight: 700; }

.sb-restore {
  margin-top: 4px;
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.sb-restore:hover { background: var(--bg-card-hover); color: var(--text-primary); }

/* Drawer */
.sb-drawer {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  visibility: hidden;
}
.sb-drawer--open { pointer-events: auto; visibility: visible; }
.sb-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.36);
  opacity: 0;
  transition: opacity 0.2s;
}
.sb-drawer--open .sb-drawer-backdrop { opacity: 1; }
.sb-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(420px, 92vw);
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-strong);
  padding: var(--spacing-xl);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sb-drawer--open .sb-drawer-panel { transform: translateX(0); }
.sb-drawer-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.5rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sb-drawer-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.sb-drawer-tier {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  align-self: flex-start;
  background: var(--bg-secondary);
  color: var(--text-secondary);
}
.sb-drawer-tier--quick-wins { background: color-mix(in srgb, var(--accent) 18%, var(--bg-secondary)); color: var(--accent); }
.sb-drawer-tier--heavyweights { background: color-mix(in srgb, var(--warning) 18%, var(--bg-secondary)); color: var(--warning); }
.sb-drawer-tier--small-wins { background: var(--bg-secondary); color: var(--text-secondary); }
.sb-drawer-tier--low-roi { background: var(--bg-secondary); color: var(--text-muted); }

.sb-drawer-title {
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.1;
}
.sb-drawer-category {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.sb-drawer-state {
  align-self: flex-start;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border-radius: 4px;
  margin-top: 4px;
}
.sb-drawer-state--untouched { background: var(--bg-secondary); color: var(--text-muted); }
.sb-drawer-state--weak     { background: var(--error-dim); color: var(--error); }
.sb-drawer-state--growing  { background: var(--warning-dim); color: var(--warning); }
.sb-drawer-state--mastered { background: var(--success-dim); color: var(--success); }

.sb-drawer-stats {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0;
  padding: 14px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}
.sb-drawer-stats > div { display: flex; justify-content: space-between; gap: 12px; }
.sb-drawer-stats dt { font-size: 0.78rem; color: var(--text-muted); margin: 0; }
.sb-drawer-stats dd { margin: 0; font-size: 0.88rem; font-weight: 600; color: var(--text-primary); text-align: right; }

.sb-drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}
.sb-drawer-actions .btn { width: 100%; }

/* Mobile + tablet */
@media (max-width: 1023px) {
  .sb-main-grid { grid-template-columns: 1fr; }
  .sb-rail { position: static; flex-direction: row; flex-wrap: wrap; }
  .sb-rail > * { flex: 1; min-width: 280px; }
}
@media (max-width: 767px) {
  .sb-stat-strip { grid-template-columns: 1fr 1fr; }
  .sb-matrix { grid-template-columns: 1fr; }
  .sb-axis-y { display: none; }
  .sb-axis-x { display: none; }
  .sb-matrix-card { grid-template-columns: 1fr; padding: var(--spacing-md); }
  .sb-matrix { grid-column: 1; }
  .sb-legend { grid-column: 1; }
  .sb-chip-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .sb-quadrant-kicker { display: none; }
  .sb-rail { flex-direction: column; }
  .sb-rail > * { min-width: 0; }
  .sb-countdown-num, .sb-big-num { font-size: 1.8rem; }
}

/* Tier chooser cards in quiz-chooser */
.tier-chooser-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  max-width: 700px;
  margin: 0 auto;
}

.tier-chooser-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  cursor: pointer;  transition:
    background var(--transition),
    transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.tier-chooser-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.tier-chooser-card h3 {
  margin: 0;
  font-size: 1rem;
}

.tier-chooser-card p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tier-chooser-card .tier-card-stats {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: auto;
}

@media (max-width: 767px) {
  .sp-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
  .sp-active-tier-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  .sp-topic-grid {
    grid-template-columns: 1fr;
  }
  .tier-chooser-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile: quiz chooser cards — single column stack */
@media (max-width: 767px) {
  .quiz-chooser-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ── Mastery model: readiness header card + per-chip due badge ──────── */
.sb-stat--readiness .sb-big-num {
  display: flex;
  align-items: baseline;
  gap: 1px;
  line-height: 1;
}
.sb-readiness-ord {
  font-size: 0.5em;
  font-weight: 600;
  opacity: 0.7;
}

/* Prescription strip ("Today's Plan") — the top do-it-now lane. */
.sb-rx-card { margin-bottom: 16px; }
.sb-rx-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin-top: 10px;
}
.sb-rx-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  background: var(--bg-card);
  cursor: pointer;
  text-align: left;
  transition: transform 0.08s ease, border-color 0.15s ease, background 0.15s ease;
}
.sb-rx-step:hover { transform: translateY(-1px); background: var(--bg-hover, color-mix(in srgb, var(--accent) 6%, var(--bg-card))); }
.sb-rx-step--review { border-left-color: var(--accent); }
.sb-rx-step--drill { border-left-color: var(--error); }
.sb-rx-step--maintain { border-left-color: var(--success); }
.sb-rx-num {
  flex: 0 0 22px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.sb-rx-icon { flex: 0 0 18px; width: 18px; height: 18px; color: var(--text-secondary); }
.sb-rx-icon svg { width: 18px; height: 18px; }
.sb-rx-body { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.sb-rx-tag { font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); font-weight: 700; }
.sb-rx-name { font-size: 14px; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sb-rx-meta { font-size: 11px; color: var(--text-secondary); }
.sb-rx-empty { color: var(--text-secondary); font-size: 13px; margin-top: 8px; }
.sb-rx-snooze {
  margin-top: 10px;
  background: none;
  border: none;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  padding: 2px 0;
}
.sb-rx-snooze:disabled { opacity: 0.5; cursor: default; }

/* Train (random mix) entry on the prescription strip (P1-06) */
.sb-rx-train {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border, rgba(0,0,0,0.08));
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sb-rx-train-btn {
  align-self: flex-start;
  background: var(--accent);
  color: var(--accent-contrast, #fff);
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.sb-rx-train-btn:hover { filter: brightness(1.05); }
.sb-rx-train-hint { font-size: 11px; color: var(--text-muted, #667); }

/* Aura Study Buddy card (T2-01) — lead with the diagnosis + why */
.sb-buddy-card { display: flex; flex-direction: column; gap: 10px; overflow: hidden; }
.sb-buddy-why {
  margin: 0;
  font-size: 15px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--text, #1a1a1a);
  overflow-wrap: anywhere;
}
.sb-buddy-slices { display: flex; flex-wrap: wrap; gap: 6px; }
.sb-buddy-chip {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft, rgba(45,106,79,0.10));
  border-radius: 999px;
  padding: 3px 10px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sb-buddy-start {
  align-self: flex-start;
  background: var(--accent);
  color: var(--accent-contrast, #fff);
  border: none;
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.sb-buddy-start:hover { filter: brightness(1.05); }
.sb-buddy-start:disabled { opacity: 0.5; cursor: default; }

/* 7-day upcoming-reviews forecast. */
.sb-fc-overdue { font-size: 12px; color: var(--error); font-weight: 600; margin: 6px 0 4px; }
.sb-fc-row { display: flex; align-items: flex-end; gap: 6px; height: 86px; margin-top: 8px; }
.sb-fc-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; height: 100%; justify-content: flex-end; }
.sb-fc-bar-wrap { flex: 1; width: 100%; display: flex; align-items: flex-end; }
.sb-fc-bar { width: 100%; min-height: 2px; background: var(--accent); border-radius: 3px 3px 0 0; opacity: 0.85; }
.sb-fc-n { font-size: 11px; font-weight: 700; color: var(--text-primary); }
.sb-fc-day { font-size: 9px; color: var(--text-muted); }

/* Due-for-review count badge, top-right of a topic chip. Subtle/outlined so a
   big backlog (every chip due) doesn't turn the board into a wall of badges. */
.sb-chip-due {
  position: absolute;
  top: -5px;
  right: -5px;
  min-width: 15px;
  height: 15px;
  padding: 0 4px;
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-size: 9px;
  font-weight: 600;
  line-height: 13px;
  text-align: center;
  pointer-events: none;
}