/* ── Design tokens ──────────────────────────────────────────────────────── */
:root {
  --color-bg:          #f7f7f5;
  --color-surface:     #ffffff;
  --color-border:      #e0ddd6;
  --color-text:        #1a1a18;
  --color-text-muted:  #6b6b63;
  --color-primary:     #e05a2b;
  --color-primary-fg:  #ffffff;
  --color-break:       #3b82f6;
  --color-long:        #10b981;
  --color-ring-bg:     #e8e5de;
  --color-ring-fill:   #e05a2b;
  --color-bar:         #e05a2b;
  --color-shadow:      rgba(0, 0, 0, 0.08);
  --radius:            12px;
  --radius-sm:         8px;
  --font:              system-ui, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:         'JetBrains Mono', 'Fira Mono', 'Courier New', monospace;
  --transition:        0.2s ease;
}

[data-theme="dark"] {
  --color-bg:          #1a1917;
  --color-surface:     #252420;
  --color-border:      #3a3830;
  --color-text:        #f0ede6;
  --color-text-muted:  #a09a90;
  --color-ring-bg:     #3a3830;
  --color-shadow:      rgba(0, 0, 0, 0.3);
}

/* ── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 1rem;
}

/* ── App shell ──────────────────────────────────────────────────────────── */
#app {
  width: 100%;
  max-width: 480px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px var(--color-shadow);
  overflow: hidden;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
}
.app-header h1 {
  font-size: 1rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.header-actions { display: flex; gap: 0.5rem; }
.icon-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.6rem;
  font-size: 0.78rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.icon-btn:hover { background: var(--color-bg); color: var(--color-text); }

/* ── Tabs ───────────────────────────────────────────────────────────────── */
.tab-nav {
  display: flex;
  border-bottom: 1px solid var(--color-border);
}
.tab-btn {
  flex: 1;
  padding: 0.65rem 0.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.tab-btn:hover { color: var(--color-text); }
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

/* ── Panel ──────────────────────────────────────────────────────────────── */
.panel { padding: 1.5rem 1.25rem 1.75rem; }

/* ── Phase label ────────────────────────────────────────────────────────── */
.phase-label {
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

/* ── Ring ───────────────────────────────────────────────────────────────── */
.ring-container {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 1.25rem;
}
.ring-svg { width: 100%; height: 100%; }
.ring-bg {
  fill: none;
  stroke: var(--color-ring-bg);
  stroke-width: 8;
}
.ring-progress {
  fill: none;
  stroke: var(--color-ring-fill);
  stroke-width: 8;
  transition: stroke-dashoffset 0.5s linear;
}
.time-display {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* ── Cycle dots ─────────────────────────────────────────────────────────── */
.cycle-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.cycle-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-ring-bg);
  border: 2px solid var(--color-border);
  display: inline-block;
  transition: background var(--transition);
}
.cycle-dot.filled {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* ── Category pills ─────────────────────────────────────────────────────── */
.category-row {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.cat-btn {
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  border: 2px solid var(--color-border);
  background: transparent;
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition);
}
.cat-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.cat-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-fg);
  font-weight: 600;
}

/* ── Controls ───────────────────────────────────────────────────────────── */
.controls {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.ctrl-btn {
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.ctrl-primary {
  background: var(--color-primary);
  color: var(--color-primary-fg);
  min-width: 110px;
}
.ctrl-primary:hover { filter: brightness(1.1); }
.ctrl-secondary {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text-muted);
}
.ctrl-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ── Keyboard hint ──────────────────────────────────────────────────────── */
.keyboard-hint {
  text-align: center;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── Log table ──────────────────────────────────────────────────────────── */
.log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.log-table th,
.log-table td {
  padding: 0.55rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.log-table th {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.log-empty {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2rem 0 !important;
}
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
}
.badge-done    { background: #d1fae5; color: #065f46; }
.badge-abandon { background: #fee2e2; color: #991b1b; }
[data-theme="dark"] .badge-done    { background: #064e3b; color: #6ee7b7; }
[data-theme="dark"] .badge-abandon { background: #450a0a; color: #fca5a5; }

/* ── Stats ──────────────────────────────────────────────────────────────── */
.stats-total-label {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}
.stats-total-value {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}
.stats-cat-list {
  list-style: none;
  margin-bottom: 1.75rem;
}
.stat-row {
  display: grid;
  grid-template-columns: 80px 1fr 60px;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--color-text);
  white-space: nowrap;
}
.bar-track {
  height: 8px;
  background: var(--color-ring-bg);
  border-radius: 4px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--color-bar);
  border-radius: 4px;
  transition: width 0.4s ease;
  min-width: 2px;
}
.stat-value {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: right;
}
.stats-sub-heading {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

/* ── Daily bar chart ────────────────────────────────────────────────────── */
.stats-daily {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  height: 100px;
  gap: 0.25rem;
}
.day-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  gap: 0.2rem;
}
.day-bar-wrap {
  width: 100%;
  height: 60px;
  display: flex;
  align-items: flex-end;
}
.day-bar {
  width: 100%;
  background: var(--color-bar);
  border-radius: 3px 3px 0 0;
  min-height: 2px;
  transition: height 0.4s ease;
}
.day-count {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.day-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

/* ── Settings modal ─────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
}
.modal-box {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 90%;
  max-width: 360px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.modal-box h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.setting-row span {
  font-size: 0.85rem;
  color: var(--color-text);
  flex: 1;
}
.setting-row input {
  width: 72px;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  text-align: right;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 360px) {
  .time-display { font-size: 2rem; }
  .ring-container { width: 170px; height: 170px; }
  .ctrl-btn { padding: 0.5rem 0.9rem; font-size: 0.82rem; }
}