:root {
  --bg: #0f0f0f;
  --card: #151515;
  --text: #e9e9e9;
  --muted: #9aa0a6;
  --accent: #20a36c;
  --ring: color-mix(in oklab, var(--accent) 60%, white 10%);
}

:root.light {
  --bg: #f7f7f7;
  --card: #ffffff;
  --text: #111111;
  --muted: #60666c;
  --accent: #1f7a56;
  --ring: color-mix(in oklab, var(--accent) 60%, black 5%);
}

@media (prefers-color-scheme: light) {
  :root:not(.dark) {
    color-scheme: light;
  }
}
@media (prefers-color-scheme: dark) {
  :root:not(.light) {
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans", "IRANSans", "Vazirmatn", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#app {
  height: 100vh;
  display: grid;
  place-items: center;
  padding: env(safe-area-inset-top) 14px env(safe-area-inset-bottom);
}

.card {
  width: 100%;
  max-width: 460px;
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  padding: 14px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 8px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.time {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-variant-numeric: tabular-nums;
}
#time-hm {
  font-size: clamp(28px, 8vw, 36px);
  font-weight: 700;
  letter-spacing: 0.5px;
}
#time-sec {
  font-size: clamp(16px, 4.5vw, 18px);
  color: var(--muted);
  margin-top: 4px;
}

.btn {
  border: none;
  background: transparent;
  color: var(--text);
  padding: 10px;
  border-radius: 10px;
  min-width: 44px;
  min-height: 44px;
  touch-action: manipulation;
}
.btn:active {
  transform: translateY(1px);
}
.btn.icon {
  display: inline-grid;
  place-items: center;
}

.focus {
  display: grid;
  place-items: center;
  min-height: 160px;
}
.pulse {
  width: 140px;
  height: 140px;
  border-radius: 999px;
  background:
    radial-gradient(60% 60% at 50% 50%, color-mix(in oklab, var(--accent) 50%, transparent) 0%, transparent 70%),
    conic-gradient(from 180deg at 50% 50%, color-mix(in oklab, var(--accent) 70%, transparent) 0%, transparent 45%, color-mix(in oklab, var(--accent) 50%, transparent) 50%, transparent 100%);
  position: relative;
  animation: breathe 6s ease-in-out infinite;
  box-shadow:
    0 0 0 1px color-mix(in oklab, var(--ring), transparent 30%),
    0 10px 40px color-mix(in oklab, var(--accent) 20%, transparent);
}
.pulse::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: inherit;
  border: 2px solid color-mix(in oklab, var(--ring), transparent 40%);
  filter: blur(0.5px);
}

@keyframes breathe {
  0%, 100% { transform: scale(0.95); box-shadow: 0 0 0 1px var(--ring), 0 12px 46px color-mix(in oklab, var(--accent) 22%, transparent); }
  50% { transform: scale(1.05); box-shadow: 0 0 0 2px var(--ring), 0 16px 56px color-mix(in oklab, var(--accent) 30%, transparent); }
}

.stats {
  justify-content: space-between;
}
.stat {
  flex: 1;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.stat span {
  display: inline-block;
  min-width: 90px;
}

.footer {
  justify-content: center;
}
.footer .link {
  color: var(--accent);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
}
.footer .link:active {
  transform: translateY(1px);
}

.grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; }
.pill { display:inline-block; padding:6px 10px; border-radius:999px; background: color-mix(in oklab, var(--accent) 12%, transparent); color: var(--text); font-size:12px; text-align:center; }