/* macOS Mojave — SF Pro feel, blue accent, light/dark */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
  --accent: #0a84ff;
  --accent-hover: #409cff;
  --accent-dim: rgba(10,132,255,0.15);
  --accent-dim2: rgba(10,132,255,0.08);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --font: -apple-system, 'SF Pro Text', 'Inter', sans-serif;
  --font-display: -apple-system, 'SF Pro Display', 'Inter', sans-serif;
  --transition: 0.18s ease;
}

/* Dark (default) */
:root, [data-theme="dark"] {
  --bg: #1c1c1e;
  --bg2: #2c2c2e;
  --bg3: #3a3a3c;
  --surface: #2c2c2e;
  --surface2: #3a3a3c;
  --border: rgba(255,255,255,0.1);
  --border-active: rgba(10,132,255,0.6);
  --text: #ffffff;
  --text2: rgba(255,255,255,0.6);
  --text3: rgba(255,255,255,0.3);
  --shadow: 0 2px 16px rgba(0,0,0,0.4);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.3);
  --success-bg: rgba(48,209,88,0.15);
  --success: #30d158;
  --danger: #ff453a;
  --danger-bg: rgba(255,69,58,0.15);
}

[data-theme="light"] {
  --bg: #f2f2f7;
  --bg2: #ffffff;
  --bg3: #e5e5ea;
  --surface: #ffffff;
  --surface2: #f2f2f7;
  --border: rgba(0,0,0,0.1);
  --border-active: rgba(10,132,255,0.5);
  --text: #000000;
  --text2: rgba(0,0,0,0.55);
  --text3: rgba(0,0,0,0.25);
  --shadow: 0 2px 16px rgba(0,0,0,0.1);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.08);
  --success-bg: rgba(48,209,88,0.12);
  --success: #28a745;
  --danger: #ff3b30;
  --danger-bg: rgba(255,59,48,0.12);
}

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

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

/* ── TOPBAR ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(28,28,30,0.8);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 16px;
}
[data-theme="light"] .topbar {
  background: rgba(242,242,247,0.85);
}

.topbar-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  flex: 1;
}

.topbar-nav {
  display: flex;
  gap: 4px;
}

.topbar-nav a {
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  text-decoration: none;
  transition: all var(--transition);
}
.topbar-nav a:hover { background: var(--surface2); color: var(--text); }
.topbar-nav a.active { background: var(--accent-dim); color: var(--accent); }

/* Theme toggle */
.theme-toggle {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  transition: all var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--text); background: var(--bg3); }

/* ── MAIN LAYOUT ── */
.page { max-width: 640px; margin: 0 auto; padding: 32px 24px 96px; }
.page-wide { max-width: 900px; margin: 0 auto; padding: 32px 24px 96px; }

/* ── PERIOD BANNER ── */
.period-banner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
}
.period-icon { font-size: 18px; flex-shrink: 0; }
.period-text { font-size: 13px; color: var(--text2); line-height: 1.5; }
.period-text strong { color: var(--text); font-weight: 500; }
.period-progress {
  margin-left: auto;
  flex-shrink: 0;
  text-align: right;
}
.period-pct {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}
.period-bar-wrap {
  width: 80px;
  height: 3px;
  background: var(--bg3);
  border-radius: 2px;
  margin-top: 4px;
  overflow: hidden;
}
.period-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* ── STATUS DOT ── */
#status {
  font-size: 12px;
  color: var(--text3);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}
#status::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text3);
  display: inline-block;
  transition: background var(--transition);
}
#status.saving { color: var(--accent); }
#status.saving::before { background: var(--accent); }
#status.saved { color: var(--success); }
#status.saved::before { background: var(--success); }
#status.error { color: var(--danger); }
#status.error::before { background: var(--danger); }

/* ── CARD ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition);
}
.card:focus-within { border-color: var(--border-active); }

/* ── QUESTION ── */
.question { margin-bottom: 16px; }
.question-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text2);
  margin-bottom: 10px;
}

/* ── YESNO ── */
.yesno { display: flex; gap: 8px; }
.yesno button {
  flex: 1; padding: 10px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.yesno button:hover { background: var(--bg3); color: var(--text); }
.yesno button.active-yes { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.yesno button.active-no { background: var(--danger-bg); border-color: var(--danger); color: var(--danger); }

/* ── SCALE ── */
.scale-wrap { display: flex; flex-direction: column; gap: 10px; }
.scale-top { display: flex; align-items: baseline; justify-content: space-between; }
.scale-value { font-size: 32px; font-weight: 600; color: var(--accent); letter-spacing: -0.03em; font-family: var(--font-display); }
.scale-range { font-size: 12px; color: var(--text3); }
input[type=range] {
  -webkit-appearance: none;
  width: 100%; height: 4px;
  background: var(--bg3);
  border-radius: 2px;
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 0 4px var(--accent-dim), var(--shadow-sm);
}

/* ── NUMBER ── */
input[type=number] {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 18px;
  font-weight: 500;
  padding: 10px 14px;
  width: 140px;
  outline: none;
  transition: border-color var(--transition);
  -moz-appearance: textfield;
}
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; }
input[type=number]:focus { border-color: var(--accent); }

/* ── DURATION / TIME ── */
.duration-wrap, .time-wrap {
  display: flex; align-items: center; gap: 6px;
}
.duration-wrap input[type=number],
.time-wrap input[type=number] {
  width: 76px; text-align: center;
}
.time-sep {
  font-size: 22px; font-weight: 600;
  color: var(--text3); line-height: 1;
  margin-bottom: 2px;
}

/* ── COUNTER ── */
.counter-wrap { display: flex; align-items: center; gap: 0; }
.counter-btn {
  width: 52px; height: 52px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  display: flex; align-items: center; justify-content: center;
  font-weight: 300;
  user-select: none;
}
.counter-btn:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.counter-btn:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.counter-btn:hover { background: var(--bg3); }
.counter-btn:active { background: var(--accent-dim); color: var(--accent); }
.counter-val {
  min-width: 68px;
  text-align: center;
  font-size: 28px;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 9px 0;
}

/* ── TEXT / TEXTAREA ── */
input[type=text], textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color var(--transition);
}
input[type=text]:focus, textarea:focus { border-color: var(--accent); }
textarea { min-height: 88px; resize: vertical; line-height: 1.5; }
::placeholder { color: var(--text3); }

/* ── CHOICE / MULTICHOICE ── */
.choice-wrap, .multichoice-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.choice-btn {
  padding: 7px 15px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text2);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.choice-btn:hover { background: var(--bg3); color: var(--text); }
.choice-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

/* ── DONE CHECKBOX ── */
.done-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.done-card:hover { border-color: var(--border-active); }
.done-card.checked {
  background: var(--success-bg);
  border-color: var(--success);
}
.done-checkbox {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2px solid var(--border-active);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  font-size: 13px;
}
.done-card.checked .done-checkbox {
  background: var(--success);
  border-color: var(--success);
  color: white;
}
.done-label { font-size: 14px; font-weight: 500; color: var(--text); }
.done-sub { font-size: 12px; color: var(--text2); margin-top: 2px; }

/* ── CALENDAR PAGE ── */
.cal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.cal-header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-family: var(--font-display);
  flex: 1;
}
.cal-nav-btn {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text2);
  cursor: pointer;
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.cal-nav-btn:hover { background: var(--bg3); color: var(--text); }

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}
.cal-dow {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 4px 0 8px;
}
.cal-cell {
  aspect-ratio: 1;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text2);
  cursor: default;
  transition: all var(--transition);
  position: relative;
  gap: 3px;
}
.cal-cell.empty { background: transparent; border-color: transparent; }
.cal-cell.has-snapshot {
  background: var(--accent-dim2);
  border-color: var(--accent-dim);
  color: var(--text);
  cursor: pointer;
}
.cal-cell.has-snapshot:hover { border-color: var(--accent); background: var(--accent-dim); }
.cal-cell.done { background: var(--success-bg); border-color: var(--success); }
.cal-cell.done .cal-day-num { color: var(--success); }
.cal-cell.today { border-color: var(--accent); }
.cal-cell.today .cal-day-num { color: var(--accent); font-weight: 700; }
.cal-day-num { font-size: 15px; line-height: 1; }
.cal-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.cal-done-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--success); }

/* ── SNAPSHOT DRAWER ── */
.snapshot-panel {
  position: fixed;
  top: 0; right: -480px;
  width: 460px;
  height: 100vh;
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(0,0,0,0.3);
  z-index: 200;
  transition: right 0.3s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.snapshot-panel.open { right: 0; }
.snapshot-panel-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.snapshot-panel-title { font-size: 16px; font-weight: 600; flex: 1; }
.snapshot-panel-body { flex: 1; overflow-y: auto; padding: 20px; }
.panel-close-btn {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text2);
  cursor: pointer;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.panel-close-btn:hover { background: var(--bg3); color: var(--text); }

.snapshot-qa { margin-bottom: 18px; }
.snapshot-q { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text3); margin-bottom: 4px; }
.snapshot-a { font-size: 14px; color: var(--text); }

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  margin-bottom: 20px;
}
.download-btn:hover { background: var(--accent); color: white; }

.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 199;
  backdrop-filter: blur(2px);
}
.overlay.visible { display: block; }

/* ── UTILS ── */
.section-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 12px;
  margin-top: 28px;
}
.section-title:first-child { margin-top: 0; }

/* Early submit button */
.early-submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--danger-bg);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  color: var(--danger);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font);
  transition: all var(--transition);
}
.early-submit-btn:hover { background: var(--danger); color: white; }