/* overview.css — Overview dashboard styles using .ov-* class names.
   Source: ui_overhaul/claude-designs/overview/Overview.html
   All var(--*) references map to tokens in colors_and_type.css.
   Hardcoded hex values marked [design-literal] come from the approved design. */

/* ── Page wrapper ── */
.ov-page { display: flex; flex-direction: column; gap: 36px; }

/* ── Section heading block ── */
.ov-section { display: flex; flex-direction: column; gap: 20px; }
.ov-section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.ov-section-eyebrow { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--color-primary-700); margin-bottom: 6px; }
.ov-section-title { font-size: 28px; font-weight: 800; color: var(--fg-primary); letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 6px; }
.ov-section-sub { font-size: var(--text-sm); color: var(--fg-secondary); max-width: 560px; line-height: var(--leading-relaxed); }
.ov-section-stamp {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--text-xs); color: var(--fg-tertiary);
  padding: 6px 10px; border-radius: var(--radius-full);
  background: var(--bg-surface); border: 1px solid var(--border-default);
  white-space: nowrap;
}
.ov-stamp-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-success); box-shadow: 0 0 0 3px rgba(22,163,74,.18); /* [design-literal] */ }
.ov-quick-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px;
  background: var(--color-primary-700); color: var(--fg-on-primary);
  border: 1px solid var(--color-primary-700); border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 600; cursor: pointer;
  transition: var(--transition-base); box-shadow: var(--shadow-primary);
  white-space: nowrap;
}
.ov-quick-btn:hover { background: var(--color-primary-800); }

/* ── Divider (TUTOR OVERVIEW pill) ── */
.ov-divider { display: flex; align-items: center; gap: 16px; margin: 4px 0; }
.ov-divider-rule { flex: 1; height: 1px; background: linear-gradient(to right, transparent, var(--border-default) 12%, var(--border-default) 88%, transparent); }
.ov-divider-label { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.ov-divider-text { font-size: var(--text-micro); font-weight: 700; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--color-primary-700); padding: 4px 14px; background: var(--color-primary-light); border-radius: var(--radius-full); }
.ov-divider-sub { font-size: var(--text-xs); color: var(--fg-tertiary); }

/* ── Card grids ── */
.ov-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 960px) { .ov-grid-2 { grid-template-columns: 1fr; } }

/* ── Card chrome ── */
.ov-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 0;
  display: flex; flex-direction: column;
  transition: box-shadow .15s ease;
}
.ov-card:hover { box-shadow: var(--shadow-sm); }
.ov-card-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; padding: 18px 22px 12px;
}
.ov-card-titlewrap { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.ov-card-eyebrow { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--fg-tertiary); }
.ov-card-title { font-size: 16px; font-weight: 700; color: var(--fg-primary); letter-spacing: -0.01em; line-height: 1.2; display: inline-flex; align-items: center; gap: 8px; }
.ov-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.ov-dot-amber { background: var(--color-warning); }
.ov-dot-blue  { background: var(--color-info); }
.ov-count-pill {
  display: inline-flex; align-items: center;
  padding: 2px 9px; min-width: 22px; justify-content: center;
  font-size: 11px; font-weight: 700;
  color: var(--color-primary-700); background: var(--color-primary-light);
  border-radius: var(--radius-full); font-variant-numeric: tabular-nums;
}
.ov-card-body { padding: 0 8px 8px; }
.ov-card-foot {
  padding: 12px 22px 16px;
  border-top: 1px solid var(--color-neutral-100);
  margin-top: 4px;
  display: flex; align-items: center; justify-content: space-between;
}

/* ── List rows ── */
.ov-list { list-style: none; display: flex; flex-direction: column; }
.ov-list-flush { padding-bottom: 6px; }
.ov-row {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 14px; margin: 0 8px;
  border-radius: var(--radius-md);
  cursor: pointer; transition: background .12s ease; outline: none;
}
.ov-row:hover, .ov-row:focus-visible { background: var(--color-neutral-50); }
.ov-row:focus-visible { box-shadow: var(--shadow-focus); }
.ov-row-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.ov-row-title { font-size: var(--text-sm); font-weight: 600; color: var(--fg-primary); line-height: 1.35; letter-spacing: var(--tracking-normal); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ov-row-context { font-weight: 500; color: var(--fg-secondary); }
.ov-row-meta { font-size: var(--text-xs); color: var(--fg-tertiary); display: inline-flex; align-items: center; gap: 6px; flex-wrap: wrap; line-height: 1.4; }
.ov-dot-sep { color: var(--color-neutral-300); }
.ov-missing { color: var(--color-warning); font-weight: 500; }
.ov-row-tag { display: inline-flex; align-items: center; padding: 1px 7px; font-size: 11px; font-weight: 600; border-radius: var(--radius-sm); }
.ov-row-tag-warning { color: var(--color-warning); background: var(--color-warning-light); }
.ov-chev { color: var(--fg-tertiary); display: inline-flex; align-items: center; align-self: center; padding: 4px; transition: transform .15s ease, color .15s ease; }
.ov-row:hover .ov-chev { color: var(--color-primary-700); transform: translateX(2px); }

/* ── Status badges (Today's Classes) ── */
.ov-status { display: inline-flex; align-items: center; gap: 5px; padding: 4px 9px; font-size: 11px; font-weight: 600; border-radius: var(--radius-sm); white-space: nowrap; flex-shrink: 0; align-self: center; }
.ov-status-success { color: var(--color-success); background: var(--color-success-light); }
.ov-status-warning { color: var(--color-warning); background: var(--color-warning-light); }
.ov-pulse-amber { width: 6px; height: 6px; border-radius: 50%; background: var(--color-warning); box-shadow: 0 0 0 3px rgba(217,119,6,.18); /* [design-literal] */ }

/* ── Subgroup (Needs Attention) ── */
.ov-subgroup { padding: 8px 0 12px; border-left: 3px solid transparent; margin: 0 14px 6px; padding-left: 4px; }
.ov-sub-amber { border-left-color: var(--color-warning); }
.ov-sub-blue  { border-left-color: var(--color-info); }
.ov-sub-head { display: flex; align-items: center; gap: 8px; padding: 4px 8px 8px; }
.ov-sub-label { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--fg-secondary); }
.ov-sub-count { display: inline-flex; align-items: center; justify-content: center; min-width: 18px; padding: 0 6px; height: 16px; font-size: 10px; font-weight: 700; color: var(--fg-secondary); background: var(--bg-surface-alt); border-radius: var(--radius-full); }
.ov-sub-amber .ov-sub-count { color: var(--color-warning); background: var(--color-warning-light); }
.ov-sub-blue  .ov-sub-count { color: var(--color-info);    background: var(--color-info-light); }
.ov-sub-empty { padding: 6px 8px 4px; font-size: var(--text-xs); color: var(--fg-tertiary); font-style: italic; }
.ov-subgroup .ov-list { padding-left: 0; padding-right: 0; }
.ov-subgroup .ov-row { margin: 0 4px; }

/* ── See-all link ── */
.ov-seeall { display: inline-flex; align-items: center; gap: 6px; font-size: var(--text-sm); font-weight: 600; color: var(--fg-link); text-decoration: none; padding: 4px 8px; margin-left: -8px; border-radius: var(--radius-sm); transition: var(--transition-fast); }
.ov-seeall:hover { background: var(--color-primary-light); }

/* ── Empty state ── */
.ov-empty { padding: 32px 24px 28px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; text-align: center; }
.ov-empty-icon { width: 40px; height: 40px; border-radius: var(--radius-full); display: inline-flex; align-items: center; justify-content: center; }
.ov-empty-success .ov-empty-icon { background: var(--color-success-light); color: var(--color-success); }
.ov-empty-neutral .ov-empty-icon { background: var(--bg-surface-alt); color: var(--fg-tertiary); }
.ov-empty-msg { font-size: var(--text-sm); color: var(--fg-secondary); max-width: 320px; line-height: var(--leading-relaxed); }

/* ── Skeleton ── */
@keyframes ov-skel-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
.ov-skel { background: linear-gradient(100deg, var(--color-neutral-100) 30%, var(--color-neutral-200) 50%, var(--color-neutral-100) 70%); background-size: 200% 100%; border-radius: 6px; height: 12px; animation: ov-skel-pulse 1.4s ease-in-out infinite; }
.ov-skel-row { display: flex; align-items: center; gap: 12px; padding: 12px 22px; border-top: 1px solid var(--color-neutral-100); }
.ov-skel-row:first-child { border-top: none; }
.ov-skel-row.has-av .ov-skel-av { width: 32px; height: 32px; border-radius: var(--radius-md); flex-shrink: 0; }
.ov-skel-lines { flex: 1; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.ov-skel-trail { width: 70px; height: 18px; border-radius: var(--radius-sm); flex-shrink: 0; }
.ov-subhead-skel { height: 11px; width: 140px; margin: 12px 22px 8px; background: var(--color-neutral-100); border-radius: 4px; }

/* ── Key/value list (Data Quality) ── */
.ov-kv-list { list-style: none; display: flex; flex-direction: column; gap: 4px; padding: 4px 8px 8px; }
.ov-kv-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 14px; border-radius: var(--radius-md); cursor: pointer; transition: background .12s ease; }
.ov-kv-row + .ov-kv-row { border-top: 1px dashed var(--color-neutral-100); }
.ov-kv-row:hover { background: var(--color-neutral-50); }
.ov-kv-label { font-size: var(--text-sm); color: var(--fg-primary); font-weight: 500; }
.ov-kv-meta { display: inline-flex; align-items: center; gap: 8px; }
.ov-kv-count { font-size: 20px; font-weight: 700; color: var(--fg-tertiary); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; min-width: 24px; text-align: right; }
.ov-kv-count.has { color: var(--color-warning); }

/* ── Tutor activity rows ── */
.ov-tutor-row { display: flex; align-items: center; gap: 12px; padding: 10px 22px; border-top: 1px solid var(--color-neutral-100); }
.ov-tutor-row:first-child { border-top: none; }
.ov-tutor-row .ov-tutor-av { width: 28px; height: 28px; border-radius: 50%; font-size: 11px; }
.ov-tutor-name { flex: 1; font-size: var(--text-sm); font-weight: 500; color: var(--fg-primary); }
.ov-tutor-stat { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: var(--radius-sm); white-space: nowrap; }
.ov-tutor-stat-active { color: var(--color-success); background: var(--color-success-light); }
.ov-tutor-stat-zero   { color: var(--fg-tertiary); background: transparent; font-weight: 500; }

/* ── Avatar palette (shared with classrooms) ── */
.roster-avatar { width: 32px; height: 32px; border-radius: var(--radius-md); color: var(--fg-on-primary); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; letter-spacing: -0.02em; }
.av-blue    { background: linear-gradient(135deg, #2563eb, #1a4fcf); /* [design-literal] */ }
.av-emerald { background: linear-gradient(135deg, #10b981, #059669); /* [design-literal] */ }
.av-amber   { background: linear-gradient(135deg, #f59e0b, #d97706); /* [design-literal] */ }
.av-purple  { background: linear-gradient(135deg, #8b5cf6, #6d28d9); /* [design-literal] */ }
.av-pink    { background: linear-gradient(135deg, #ec4899, #be185d); /* [design-literal] */ }
.av-rose    { background: linear-gradient(135deg, #f43f5e, #be123c); /* [design-literal] */ }
.av-slate   { background: linear-gradient(135deg, #64748b, #334155); /* [design-literal] */ }
.av-teal    { background: linear-gradient(135deg, #14b8a6, #0f766e); /* [design-literal] */ }

/* ── Week strip ── */
.ov-card.full .ov-card-body { padding: 0 22px 22px; }
.ov-week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; }
.ov-day { border: 1px solid var(--border-default); background: var(--bg-surface); border-radius: var(--radius-md); padding: 14px 12px 12px; min-height: 124px; display: flex; flex-direction: column; justify-content: space-between; gap: 10px; transition: var(--transition-fast); }
.ov-day-header { display: flex; align-items: baseline; justify-content: space-between; }
.ov-day-label { font-size: 11px; font-weight: 700; letter-spacing: var(--tracking-wider); color: var(--fg-secondary); }
.ov-day-date  { font-size: 11px; color: var(--fg-tertiary); font-variant-numeric: tabular-nums; }
.ov-day-num { font-size: 28px; font-weight: 800; color: var(--fg-primary); line-height: 1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.ov-day-num-strong { color: var(--fg-primary); }
.ov-day-num-slash  { color: var(--fg-tertiary); font-weight: 600; font-size: 18px; margin-left: 2px; }
.ov-day-num-muted  { color: var(--fg-tertiary); font-weight: 500; }
.ov-day-cap { font-size: 11px; color: var(--fg-secondary); font-weight: 500; display: inline-flex; align-items: center; gap: 5px; letter-spacing: -0.005em; }
.ov-day-cap-muted { color: var(--fg-tertiary); }

.ov-day-past-complete { background: var(--color-success-light); border-color: #bbf7d0; /* [design-literal] */ }
.ov-day-past-complete .ov-day-label,
.ov-day-past-complete .ov-day-num,
.ov-day-past-complete .ov-day-cap { color: #166534; /* [design-literal] */ }
.ov-day-past-complete .ov-day-date { color: #16803a; /* [design-literal] */ }

.ov-day-past-partial { background: var(--color-warning-light); border-color: #fde68a; /* [design-literal] */ }
.ov-day-past-partial .ov-day-label,
.ov-day-past-partial .ov-day-cap { color: #92400e; /* [design-literal] */ }
.ov-day-past-partial .ov-day-num-strong { color: #92400e; /* [design-literal] */ }

.ov-day-today { background: var(--bg-surface); border: 2px solid var(--color-primary-700); box-shadow: var(--shadow-sm); padding: 13px 11px 11px; }
.ov-day-today .ov-day-label { color: var(--color-primary-700); }
.ov-day-today .ov-day-cap { color: var(--color-primary-700); font-weight: 600; }

.ov-day-future { background: var(--bg-surface); }
.ov-day-none   { background: var(--color-neutral-50); border-style: dashed; }

.ov-week-legend { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 11px; color: var(--fg-tertiary); font-weight: 500; width: 100%; }
.ov-week-legend span { display: inline-flex; align-items: center; gap: 6px; }
.ov-leg { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.ov-leg-success { background: var(--color-success-light); border: 1px solid #bbf7d0; /* [design-literal] */ }
.ov-leg-warning { background: var(--color-warning-light); border: 1px solid #fde68a; /* [design-literal] */ }
.ov-leg-today   { background: var(--bg-surface); border: 2px solid var(--color-primary-700); }
.ov-leg-future  { background: var(--bg-surface); border: 1px solid var(--border-default); }
.ov-leg-none    { background: var(--color-neutral-50); border: 1px dashed var(--border-strong); }