/* ═══════════════════════════════════════════════════════════════
   Time Tracker — specific styles
═══════════════════════════════════════════════════════════════ */

.tt-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 900px) {
  .tt-layout { grid-template-columns: 1fr; }
}

.tt-form-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 14px;
  padding: var(--space-5);
  position: sticky;
  top: 80px;
}

@media (max-width: 900px) {
  .tt-form-panel { position: static; }
}

.tt-subjects {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--space-3);
}

.tt-subject-row {
  display: grid;
  grid-template-columns: 1fr 70px 26px;
  gap: 6px;
  align-items: center;
}

.tt-subject-row__name {
  font-size: var(--text-sm);
  padding: 6px 10px;
  background: var(--color-bg-alt);
  border-radius: 6px;
  color: var(--color-text);
}

.tt-subject-row__name input {
  background: transparent;
  border: none;
  width: 100%;
  font-size: var(--text-sm);
  color: var(--color-text);
  font-family: inherit;
}

.tt-subject-row__name input:focus { outline: none; }

.tt-subject-row__hours {
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  background: var(--color-bg);
  text-align: center;
}

.tt-subject-row__hours:focus {
  outline: none;
  border-color: var(--color-accent);
}

.tt-subject-row__del {
  width: 26px; height: 26px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

.tt-subject-row__del:hover {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #b91c1c;
}

.tt-derived {
  background: var(--color-bg-alt);
  border-radius: 8px;
  padding: 10px 14px;
  margin: var(--space-3) 0;
}

.tt-derived__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  font-size: var(--text-sm);
}

.tt-derived__row strong {
  font-family: var(--font-mono);
  color: var(--color-brand);
  font-size: var(--text-base);
}

.tt-target-input {
  width: 50px;
  padding: 2px 6px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-align: center;
}

/* Dashboard */
.tt-dashboard { min-height: 500px; }

.tt-empty {
  background: var(--color-surface);
  border: 2px dashed var(--color-border-light);
  border-radius: 14px;
  padding: var(--space-8) var(--space-6);
  text-align: center;
}

.tt-empty h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  margin-bottom: 8px;
}

.tt-empty p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* Stats grid */
.tt-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

@media (max-width: 600px) {
  .tt-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

.tt-stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: var(--space-4);
  text-align: center;
}

.tt-stat__value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-brand);
}

.tt-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 4px;
  font-weight: var(--font-semibold);
}

/* Heatmap (GitHub-style) */
#tt-heatmap {
  display: grid;
  grid-template-rows: repeat(7, 14px);
  grid-auto-flow: column;
  grid-auto-columns: 14px;
  gap: 3px;
  overflow-x: auto;
  padding-bottom: 8px;
  max-width: 100%;
  justify-content: start;
}

/* Subject bars — cap width so they don't sprawl on wide screens */
#tt-subject-bars { max-width: 720px; }

.tt-heatmap-cell {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  background: #ebedf0;
  position: relative;
  cursor: pointer;
  transition: transform 0.12s;
}

.tt-heatmap-cell:hover {
  transform: scale(1.4);
  z-index: 10;
}

.tt-heatmap-cell--l1 { background: #c6e48b; }
.tt-heatmap-cell--l2 { background: #7bc96f; }
.tt-heatmap-cell--l3 { background: #239a3b; }
.tt-heatmap-cell--l4 { background: #196127; }

.tt-heatmap-cell[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-brand);
  color: #fff;
  font-size: 10px;
  padding: 3px 7px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 20;
}

.tt-heatmap-legend {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: flex-end;
  margin-top: 12px;
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Subject bars */
.tt-subject-bar {
  display: grid;
  grid-template-columns: 120px 1fr 70px;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
  font-size: var(--text-sm);
}

.tt-subject-bar__name {
  color: var(--color-text);
  font-weight: var(--font-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tt-subject-bar__track {
  height: 14px;
  background: var(--color-bg-alt);
  border-radius: 3px;
  overflow: hidden;
}

.tt-subject-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent) 0%, #b8860b 100%);
  border-radius: 3px;
}

.tt-subject-bar__hours {
  font-family: var(--font-mono);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  text-align: right;
}

/* Recent rows */
#tt-recent-rows td {
  font-size: var(--text-sm);
}

.tt-row-edit, .tt-row-del {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: var(--text-xs);
}

.tt-row-edit:hover { background: var(--color-bg-alt); color: var(--color-accent); }
.tt-row-del:hover { background: #fee2e2; color: #b91c1c; }

/* ── Mobile improvements ── */
@media (max-width: 500px) {
  .tt-subject-row { grid-template-columns: 1fr 60px 24px; gap: 4px; }
  .tt-subject-row__name { font-size: 12px; padding: 5px 8px; }
  .tt-subject-row__hours { font-size: 12px; padding: 5px; }

  .tt-stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-2); }
  .tt-stat { padding: var(--space-3); }
  .tt-stat__value { font-size: var(--text-xl); }

  /* Heatmap — smaller cells, horizontal scroll if needed */
  #tt-heatmap {
    grid-auto-rows: 11px;
    grid-template-rows: repeat(7, 11px);
    grid-auto-columns: 11px;
    gap: 2px;
  }
  .tt-heatmap-cell { width: 11px; height: 11px; }

  .tt-subject-bar { grid-template-columns: 80px 1fr 50px; gap: 6px; font-size: 11px; }
  .tt-subject-bar__name { font-size: 11px; }
}