* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0A0A0C;
  --bg2: #141418;
  --bg3: #1E1E24;
  --mauve: #C0A0B5;
  --mauve-dim: #8A7082;
  --mauve-glow: rgba(192, 160, 181, 0.15);
  --text: #E8E0E4;
  --text-dim: #9A9098;
  --red: #D4707A;
  --green: #7AB08A;
  --radius: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* ---------- PIN overlay ---------- */
#pin-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 100;
}
#pin-overlay.hidden { display: none; }
#pin-overlay h2 { color: var(--mauve); margin-bottom: 24px; font-weight: 400; letter-spacing: 2px; }
#pin-input {
  background: var(--bg2); border: 1px solid var(--bg3);
  color: var(--text); font-size: 24px; text-align: center;
  padding: 12px 20px; border-radius: var(--radius); width: 160px;
  letter-spacing: 8px; outline: none;
}
#pin-input:focus { border-color: var(--mauve); }
#pin-error { color: var(--red); margin-top: 12px; font-size: 13px; min-height: 20px; }

/* ---------- App shell ---------- */
#app { display: none; max-width: 480px; margin: 0 auto; padding: 20px 16px 100px; }
#app.active { display: block; }

header {
  text-align: center; padding: 16px 0 24px;
}
header h1 { font-size: 20px; font-weight: 300; color: var(--mauve); letter-spacing: 3px; }
header .phase { font-size: 13px; color: var(--text-dim); margin-top: 4px; }

/* ---------- Cycle ring ---------- */
.cycle-ring {
  display: flex; justify-content: center; padding: 20px 0;
}
.cycle-ring svg { width: 180px; height: 180px; }
.cycle-ring .day-text { font-size: 28px; fill: var(--text); font-weight: 300; }
.cycle-ring .label-text { font-size: 11px; fill: var(--text-dim); letter-spacing: 1px; }

/* ---------- Action buttons ---------- */
.actions {
  display: flex; gap: 12px; justify-content: center; margin: 24px 0;
}
.btn {
  background: var(--bg2); border: 1px solid var(--bg3);
  color: var(--text); padding: 10px 20px; border-radius: var(--radius);
  font-size: 14px; cursor: pointer; transition: all 0.2s;
  font-family: var(--font);
}
.btn:hover, .btn:active { border-color: var(--mauve); background: var(--bg3); }
.btn.primary { background: var(--mauve); color: var(--bg); border-color: var(--mauve); }
.btn.primary:hover { opacity: 0.9; }
.btn.danger { color: var(--red); }
.btn.danger:hover { border-color: var(--red); }
.btn:disabled { opacity: 0.3; cursor: default; }

/* ---------- Today card ---------- */
.card {
  background: var(--bg2); border: 1px solid var(--bg3);
  border-radius: var(--radius); padding: 20px; margin: 16px 0;
}
.card h3 {
  font-size: 13px; font-weight: 400; color: var(--mauve);
  letter-spacing: 1px; text-transform: uppercase; margin-bottom: 14px;
}

/* ---------- Symptom grid ---------- */
.symptom-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.symptom-item {
  background: var(--bg3); border-radius: 8px; padding: 10px 12px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; transition: all 0.2s; user-select: none;
}
.symptom-item.active { background: var(--mauve-glow); border: 1px solid var(--mauve-dim); }
.symptom-item .label { font-size: 13px; color: var(--text-dim); }
.symptom-item.active .label { color: var(--text); }

/* ---------- Severity selector ---------- */
.severity {
  display: flex; gap: 4px;
}
.severity .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--text-dim);
  cursor: pointer; transition: all 0.2s;
}
.severity .dot.filled { background: var(--mauve); border-color: var(--mauve); }

/* ---------- Flow selector ---------- */
.flow-selector {
  display: flex; gap: 8px; justify-content: center; margin: 12px 0;
}
.flow-opt {
  padding: 6px 14px; border-radius: 20px; font-size: 13px;
  background: var(--bg3); color: var(--text-dim); cursor: pointer;
  border: 1px solid transparent; transition: all 0.2s;
}
.flow-opt.active { background: var(--mauve-glow); color: var(--text); border-color: var(--mauve-dim); }

/* ---------- Mood selector ---------- */
.mood-selector {
  display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin: 12px 0;
}
.mood-opt {
  padding: 6px 12px; border-radius: 20px; font-size: 13px;
  background: var(--bg3); color: var(--text-dim); cursor: pointer;
  border: 1px solid transparent; transition: all 0.2s;
}
.mood-opt.active { background: var(--mauve-glow); color: var(--text); border-color: var(--mauve-dim); }

/* ---------- Notes ---------- */
.notes-input {
  width: 100%; background: var(--bg3); border: 1px solid transparent;
  color: var(--text); padding: 10px 12px; border-radius: 8px;
  font-size: 13px; font-family: var(--font); resize: none;
  outline: none; margin-top: 12px; min-height: 60px;
}
.notes-input:focus { border-color: var(--mauve-dim); }
.notes-input::placeholder { color: var(--text-dim); }

/* ---------- Calendar strip ---------- */
.cal-strip {
  display: flex; gap: 6px; overflow-x: auto; padding: 8px 0;
  scrollbar-width: none;
}
.cal-strip::-webkit-scrollbar { display: none; }
.cal-day {
  flex: 0 0 auto; width: 44px; text-align: center;
  padding: 8px 0; border-radius: 8px; cursor: pointer;
  transition: all 0.2s;
}
.cal-day .dow { font-size: 10px; color: var(--text-dim); text-transform: uppercase; }
.cal-day .num { font-size: 16px; margin: 4px 0; color: var(--text); }
.cal-day .dot-row { height: 6px; display: flex; justify-content: center; gap: 2px; }
.cal-day .dot-row .indicator {
  width: 5px; height: 5px; border-radius: 50%;
}
.cal-day .dot-row .indicator.period { background: var(--red); }
.cal-day .dot-row .indicator.log { background: var(--mauve-dim); }
.cal-day.today { background: var(--bg3); }
.cal-day.selected { background: var(--mauve-glow); border: 1px solid var(--mauve-dim); }

/* ---------- History ---------- */
.history-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0; border-bottom: 1px solid var(--bg3);
}
.history-item:last-child { border-bottom: none; }
.history-item .dates { font-size: 14px; }
.history-item .length { font-size: 13px; color: var(--text-dim); }

/* ---------- Status bar ---------- */
.status-bar {
  display: flex; justify-content: space-between; align-items: center;
  margin: 8px 0;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50; margin-right: 6px; display: inline-block;
}
.status-dot.on { background: var(--green); }
.status-dot.off { background: var(--text-dim); }
.status-text { font-size: 12px; color: var(--text-dim); }

/* ---------- Bottom nav ---------- */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg2); border-top: 1px solid var(--bg3);
  display: flex; justify-content: center; gap: 40px;
  padding: 12px 0 max(12px, env(safe-area-inset-bottom));
  z-index: 50;
}
.nav-item {
  display: flex; flex-direction: column; align-items: center;
  color: var(--text-dim); font-size: 11px; cursor: pointer;
  background: none; border: none; font-family: var(--font);
}
.nav-item.active { color: var(--mauve); }
.nav-item svg { width: 22px; height: 22px; margin-bottom: 3px; }

/* ---------- Tabs ---------- */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ---------- Misc ---------- */
.save-status {
  text-align: center; font-size: 12px; color: var(--green);
  min-height: 20px; margin-top: 8px;
}

@media (min-width: 500px) {
  #app { padding: 24px 24px 100px; }
}