/* ===== BREATHING STATS ===== */

.bstats-main { padding: 2rem 0 5rem; }

/* ---- Hero ---- */
.bstats-hero {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

.bstats-hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.2rem 0.8rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.bstats-hero-val {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--accent);
  line-height: 1;
}

.bstats-hero-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---- Sections ---- */
.bstats-section {
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

.bstats-section-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* ---- 28-day calendar ---- */
.bstats-calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem;
}

.bstats-cal-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  position: relative;
  cursor: default;
  transition: transform 0.15s;
}
.bstats-cal-cell:hover { transform: scale(1.15); }

.bstats-cal-cell .bstats-cal-day {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.58rem;
  color: var(--muted);
}

.bstats-cal-cell.none { background: rgba(255,255,255,0.03); }
.bstats-cal-cell.low  { background: rgba(139,124,248,0.15); }
.bstats-cal-cell.mid  { background: rgba(139,124,248,0.35); }
.bstats-cal-cell.high { background: rgba(139,124,248,0.65); }
.bstats-cal-cell.today { outline: 1px solid var(--accent); }

/* ---- Legend ---- */
.bstats-cal-legend {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 0.6rem;
  font-size: 0.72rem;
  color: var(--muted);
}

.bstats-cal-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 0.3rem;
  vertical-align: middle;
}
.bstats-cal-dot.none { background: rgba(255,255,255,0.04); border: 1px solid var(--border); }
.bstats-cal-dot.low  { background: rgba(139,124,248,0.15); }
.bstats-cal-dot.mid  { background: rgba(139,124,248,0.35); }
.bstats-cal-dot.high { background: rgba(139,124,248,0.65); }

/* ---- Technique chart ---- */
.bstats-tech-wrap {
  display: flex;
  align-items: center;
  gap: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.5rem;
  flex-wrap: wrap;
}

#bsTechChart { flex-shrink: 0; }

.bstats-tech-legend {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.bstats-tech-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.82rem;
}

.bstats-tech-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.bstats-tech-label { flex: 1; color: var(--muted); }
.bstats-tech-pct   { color: var(--text); font-size: 0.8rem; }

/* ---- Sessions list ---- */
.bstats-sessions { display: flex; flex-direction: column; gap: 0.5rem; }

.bstats-session-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.bstats-session-name { flex: 1; }
.bstats-session-dur  { font-size: 0.78rem; color: var(--muted); }
.bstats-session-date { font-size: 0.72rem; color: var(--muted); text-align: right; }

/* ---- Empty ---- */
.bstats-empty {
  max-width: 360px;
  margin: 2rem auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.bstats-empty span { font-size: 2.5rem; color: var(--muted); }
.bstats-empty p    { color: var(--muted); font-size: 0.9rem; }

@media (max-width: 560px) {
  .bstats-hero { grid-template-columns: repeat(2, 1fr); }
}