/* =============================================================
   SLEEP TAB
   Manual sleep logging, quality rating, trend chart, and
   AI sleep analysis integration.
   Depends on: tokens.css
   ============================================================= */

/* ── Tab layout ────────────────────────────────────────────── */

#sleepTabContent {
  padding: 0 12px 24px;
}

/* ── Log form card ─────────────────────────────────────────── */

.sleep-log-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 16px;
}

.sleep-log-card h3 {
  margin: 0 0 14px;
  font-size: 1rem;
  color: var(--text-color);
}

.sleep-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

.sleep-form-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--secondary-text);
  font-weight: 600;
}

.sleep-form-row input[type="time"],
.sleep-form-row input[type="date"] {
  margin: 0;
  padding: 10px 12px;
  font-size: 0.95rem;
}

/* ── Quality rating stars ──────────────────────────────────── */

.sleep-quality-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.sleep-quality-label {
  font-size: 0.8rem;
  color: var(--secondary-text);
  font-weight: 600;
  white-space: nowrap;
}

.sleep-quality-stars {
  display: flex;
  gap: 6px;
}

.sleep-star {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--surface-bg);
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  padding: 0;
  margin: 0;
  box-shadow: none;
}

.sleep-star.active {
  background: rgba(45, 125, 91, 0.15);
  border-color: var(--primary);
  color: var(--primary);
}

/* ── Tags row ──────────────────────────────────────────────── */

.sleep-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.sleep-tag {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--surface-bg);
  color: var(--secondary-text);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  margin: 0;
  box-shadow: none;
}

.sleep-tag.active {
  background: rgba(45, 125, 91, 0.15);
  border-color: var(--primary);
  color: var(--primary);
}

/* ── Notes ─────────────────────────────────────────────────── */

.sleep-notes {
  width: 100%;
  min-height: 44px;
  margin: 0 0 12px;
  font-size: 0.88rem;
  resize: vertical;
}

/* ── Save button ───────────────────────────────────────────── */

.sleep-save-btn {
  width: 100%;
  padding: 13px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
}

/* ── Stats summary cards ───────────────────────────────────── */

.sleep-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.sleep-stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px 10px;
  text-align: center;
}

.sleep-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}

.sleep-stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Trend chart ───────────────────────────────────────────── */

.sleep-chart-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 16px;
}

.sleep-chart-card h3 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--text-color);
}

.sleep-chart-period {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.sleep-period-btn {
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--secondary-text);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  margin: 0;
  box-shadow: none;
}

.sleep-period-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* Bar chart */
.sleep-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 120px;
  padding: 0 2px;
}

.sleep-bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 100%;
  justify-content: flex-end;
}

.sleep-bar {
  width: 100%;
  max-width: 28px;
  border-radius: 4px 4px 0 0;
  background: var(--primary);
  opacity: 0.7;
  transition: height 0.3s ease;
  min-height: 2px;
}

.sleep-bar.good { opacity: 1; }
.sleep-bar.poor { background: #c05060; opacity: 0.8; }
.sleep-bar.fair { background: var(--highlight); opacity: 0.8; }

.sleep-bar-label {
  font-size: 0.6rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── History list ──────────────────────────────────────────── */

.sleep-history-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 16px;
}

.sleep-history-card h3 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--text-color);
}

.sleep-entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.sleep-entry:last-child {
  border-bottom: none;
}

.sleep-entry-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sleep-entry-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-color);
}

.sleep-entry-times {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sleep-entry-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sleep-entry-duration {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
}

.sleep-entry-quality {
  font-size: 0.75rem;
  color: var(--secondary-text);
}

.sleep-entry-tags {
  display: flex;
  gap: 4px;
}

.sleep-entry-tag {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(45, 125, 91, 0.1);
  color: var(--text-muted);
}

.sleep-entry-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 4px;
  margin: 0;
  box-shadow: none;
  opacity: 0.5;
}

.sleep-entry-delete:hover {
  opacity: 1;
  color: #c05060;
}

.sleep-empty {
  text-align: center;
  padding: 24px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ── AI insight card ───────────────────────────────────────── */

.sleep-ai-card {
  background: var(--card-bg);
  border: 1px solid rgba(45, 125, 91, 0.25);
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 14px;
  margin-bottom: 16px;
}

.sleep-ai-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.sleep-ai-header span {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
}

.sleep-ai-body {
  font-size: 0.88rem;
  color: var(--secondary-text);
  line-height: 1.5;
}

.sleep-ai-btn {
  margin-top: 10px;
  padding: 10px 18px;
  font-size: 0.82rem;
  border-radius: 10px;
  width: 100%;
}