/* Craving Tracker — mobile-first dark */

:root {
  --bg: #0f0f14;
  --bg-elev: #1a1a23;
  --bg-card: #20202c;
  --fg: #eef0f7;
  --fg-muted: #8a8f9e;
  --accent: #ff5a6b;
  --accent-dim: #c9424f;
  --success: #3fc47d;
  --warn: #f2b02a;
  --supp: #6a8cff;
  --smoke: #ff5a6b;
  --endure: #3fc47d;
  --border: #2a2a36;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  overscroll-behavior: none;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}
input, button { font-family: inherit; color: inherit; }
button { border: 0; background: transparent; cursor: pointer; }

.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  transition: transform 0.22s ease-out;
  will-change: transform;
  background: var(--bg);
}
.screen[hidden] { display: none; }
.screen.off-right { transform: translateX(100%); }
.screen.off-left { transform: translateX(-100%); }
.screen.no-anim { transition: none; }

/* --- AUTH --- */
.auth-screen { align-items: center; justify-content: center; padding: 24px; }
.auth-box { width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 14px; }
.emoji-big { font-size: 80px; text-align: center; }
.auth-box h1 { text-align: center; font-size: 24px; font-weight: 600; margin-bottom: 6px; }
.auth-box input {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 16px;
  outline: none;
}
.auth-box input:focus { border-color: var(--accent); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
}
.btn-primary:active { background: var(--accent-dim); }
.err { color: var(--accent); text-align: center; font-size: 14px; min-height: 18px; }

/* --- LOADING --- */
.loading-screen { align-items: center; justify-content: center; }

/* --- HOME --- */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.day-label { font-size: 18px; font-weight: 600; }
.top-actions { display: flex; gap: 6px; align-items: center; }
.icon-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; border-radius: 10px;
}
.icon-btn:active { background: var(--bg-elev); }

.sync-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--fg-muted);
  margin-right: 4px;
  transition: background 0.2s;
}
.sync-dot.synced { background: var(--success); }
.sync-dot.pending { background: var(--warn); }
.sync-dot.offline { background: var(--fg-muted); }

.home-main {
  flex: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 20px 18px 28px;
  gap: 16px;
  overflow-y: auto;
}
.home-main > .timer-card { grid-row: 1; align-self: start; }
.home-main > .big-button { grid-row: 2; align-self: center; justify-self: center; }
.home-main > .today-summary { grid-row: 3; align-self: end; }

.timer-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
}
.timer-label { font-size: 13px; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 1px; }
.timer { font-size: 36px; font-weight: 300; margin-top: 6px; font-variant-numeric: tabular-nums; }

.big-button {
  background: var(--accent);
  border-radius: 100%;
  aspect-ratio: 1 / 1;
  width: min(62vw, 240px);
  max-height: 62vw;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 40px rgba(255, 90, 107, 0.25);
  transition: transform 0.08s, background 0.08s;
}
.big-button:active { transform: scale(0.95); background: var(--accent-dim); }
.big-label { color: #fff; font-size: 20px; font-weight: 600; text-align: center; padding: 20px; }

.today-summary {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
}
.today-summary:empty { display: none; }
.sum-row {
  display: grid;
  grid-template-columns: 44px repeat(4, 1fr);
  gap: 6px;
  align-items: center;
  padding: 8px 0;
}
.sum-row.yest {
  border-top: 1px solid var(--border);
  opacity: 0.62;
}
.sum-label {
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.sum-row .stat-block { text-align: center; }
.sum-row .stat-num { font-size: 19px; font-weight: 600; font-variant-numeric: tabular-nums; }
.sum-row .stat-lbl { font-size: 10px; color: var(--fg-muted); text-transform: uppercase; margin-top: 1px; }
.sum-row .stat-block.smoke .stat-num { color: var(--smoke); }
.sum-row .stat-block.endure .stat-num { color: var(--endure); }
.sum-row .stat-block.supp .stat-num { color: var(--supp); }

/* --- OUTCOME SHEET --- */
.sheet-bg {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 10;
  animation: fadeIn 0.15s;
}
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--bg-elev);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  padding: 20px 18px calc(20px + env(safe-area-inset-bottom));
  z-index: 11;
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: slideUp 0.2s;
}
.sheet-title { font-size: 17px; font-weight: 600; text-align: center; }
.sheet-text { font-size: 14px; color: var(--fg-muted); text-align: center; }
.timer-live { font-size: 28px; text-align: center; font-variant-numeric: tabular-nums; color: var(--fg-muted); }

.outcome-buttons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.outcome-btn {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 20px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  border: 2px solid transparent;
}
.outcome-btn:active { transform: scale(0.96); }
.outcome-btn .outcome-icon { font-size: 32px; }
.outcome-btn .outcome-name { font-size: 13px; font-weight: 500; }
.outcome-btn.endure:active { border-color: var(--endure); }
.outcome-btn.smoke:active { border-color: var(--smoke); }
.outcome-btn.supplement:active { border-color: var(--supp); }

.cancel-btn {
  background: transparent;
  padding: 12px;
  font-size: 15px;
  color: var(--fg-muted);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }

/* --- STATS --- */
.stats-main {
  flex: 1;
  overflow-y: auto;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.stats-section h2 { font-size: 14px; font-weight: 600; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }

.today-list { display: flex; flex-direction: column; gap: 6px; }
.expand-btn {
  background: transparent;
  color: var(--fg-muted);
  font-size: 13px;
  font-weight: 500;
  padding: 10px;
  text-align: center;
  border-radius: 10px;
  margin-top: 2px;
  transition: color 0.15s, background 0.15s;
}
.expand-btn:active {
  color: var(--fg);
  background: var(--bg-elev);
}
.today-item {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.today-item .row-idx { font-size: 12px; color: var(--fg-muted); min-width: 20px; }
.today-item .row-elapsed { flex: 1; font-variant-numeric: tabular-nums; }
.today-item .row-outcome { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 8px; }
.row-outcome.smoke { background: rgba(255, 90, 107, 0.18); color: var(--smoke); }
.row-outcome.endure { background: rgba(63, 196, 125, 0.18); color: var(--endure); }
.row-outcome.supplement { background: rgba(106, 140, 255, 0.18); color: var(--supp); }

.empty-state { color: var(--fg-muted); font-size: 14px; text-align: center; padding: 24px 0; }

.week-chart {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.bar-row {
  display: grid;
  grid-template-columns: 64px 1fr 28px;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}
.bar-row .bar-lbl { color: var(--fg-muted); font-size: 12px; }
.bar-row .bar-total { text-align: right; color: var(--fg-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.bar {
  display: flex;
  height: 22px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--bg-elev);
}
.bar .seg { height: 100%; }
.bar .seg.smoke { background: var(--smoke); }
.bar .seg.endure { background: var(--endure); }
.bar .seg.supplement { background: var(--supp); }

.kv-grid {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 4px 14px;
}
.kv-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.kv-row:last-child { border-bottom: 0; }
.kv-key { font-size: 14px; color: var(--fg-muted); }
.kv-val { font-size: 15px; font-weight: 500; font-variant-numeric: tabular-nums; }

.brk-grid {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 4px 14px;
}
.brk-row {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  gap: 4px;
}
.brk-row:last-child { border-bottom: 0; }
.brk-key { font-size: 13px; color: var(--fg-muted); }
.brk-val { font-size: 14px; font-weight: 500; text-align: right; font-variant-numeric: tabular-nums; }
.brk-head .brk-val { color: var(--fg-muted); font-weight: 600; font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; }
.brk-head { padding-bottom: 6px; }

/* --- GRAPH SCREEN --- */
.period-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  -webkit-overflow-scrolling: touch;
}
.period-tabs::-webkit-scrollbar { display: none; }
.period-tab {
  background: var(--bg-elev);
  color: var(--fg-muted);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  flex-shrink: 0;
}
.period-tab.active {
  background: var(--accent);
  color: #fff;
}
.graph-main {
  flex: 1;
  overflow-y: auto;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.graph-container {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 12px 10px;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chart-svg {
  width: 100%;
  height: 240px;
  display: block;
}
.graph-legend {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.leg-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--fg-muted);
}
.leg-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.leg-dot.smoke { background: var(--smoke); }
.leg-dot.endure { background: var(--endure); }
.leg-dot.supp { background: var(--supp); }