:root {
  --bg: #07080c;
  --panel: rgba(22, 25, 33, .72);
  --panel-solid: #14171e;
  --panel-2: rgba(255, 255, 255, .045);
  --border: rgba(255, 255, 255, .07);
  --border-strong: rgba(255, 255, 255, .14);
  --text: #f2f4f8;
  --muted: #8b93a5;
  --accent: #34d399;
  --violet: #a78bfa;
  --danger: #f87171;
  --empty: rgba(255, 255, 255, .06);
  --cell: 12px;
  --gap: 3px;
  --radius: 22px;
  --shadow: 0 1px 0 rgba(255,255,255,.04) inset, 0 20px 40px -20px rgba(0,0,0,.6);
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f4f8;
    --panel: rgba(255, 255, 255, .82);
    --panel-solid: #ffffff;
    --panel-2: rgba(15, 20, 35, .045);
    --border: rgba(15, 20, 35, .08);
    --border-strong: rgba(15, 20, 35, .16);
    --text: #0e1117;
    --muted: #6b7280;
    --empty: rgba(15, 20, 35, .07);
    --shadow: 0 10px 30px -18px rgba(20, 25, 40, .25);
    color-scheme: light;
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}
/* soft colored glows behind everything */
body::before {
  content: ""; position: fixed; inset: -20vh -20vw auto; height: 80vh; z-index: -1; pointer-events: none;
  background:
    radial-gradient(40vw 40vh at 15% 30%, rgba(167, 139, 250, .18), transparent 70%),
    radial-gradient(35vw 35vh at 85% 20%, rgba(52, 211, 153, .14), transparent 70%),
    radial-gradient(30vw 30vh at 60% 60%, rgba(251, 191, 36, .08), transparent 70%);
  filter: blur(20px);
}
.num, .big, .stat b { font-variant-numeric: tabular-nums; }
.wrap {
  max-width: 1080px; margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) calc(64px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}
h1 { font-size: 30px; margin: 0; letter-spacing: -0.035em; font-weight: 750; }
h2 { font-size: 18px; margin: 0; letter-spacing: -0.02em; font-weight: 650; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.spacer { flex: 1; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-top: 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.icon {
  width: 44px; height: 44px; border-radius: 14px; flex: none;
  display: grid; place-items: center; font-size: 22px;
  background: color-mix(in srgb, var(--c, #888) 18%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--c, #888) 30%, transparent) inset;
}
.chip {
  display: inline-flex; align-items: center; gap: 4px; font-size: 12.5px; font-weight: 600;
  padding: 3px 9px; border-radius: 99px; background: var(--panel-2); white-space: nowrap;
}
.chip.up { background: rgba(52, 211, 153, .14); color: #34d399; }
.chip.down { background: rgba(248, 113, 113, .14); color: var(--danger); }
.up { color: #34d399; }
.down { color: var(--danger); }

button, .btn {
  font: inherit; font-weight: 550;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 12px;
  padding: 9px 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  transition: background .15s, border-color .15s, transform .08s;
  touch-action: manipulation;
}
@media (hover: hover) { button:hover, .btn:hover { border-color: var(--border-strong); } }
button:active, .btn:active { transform: scale(.96); }
button.primary { background: var(--accent); border-color: var(--accent); color: #032014; font-weight: 650; }
button.ghost { background: transparent; }
button.danger { color: var(--danger); }
input, select {
  font: inherit; font-size: 16px; /* 16px stops iOS from zooming on focus */
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  min-width: 0;
}
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.seg { display: inline-flex; background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; padding: 3px; }
.seg button { border: 0; background: transparent; padding: 6px 12px; border-radius: 9px; color: var(--muted); font-size: 13.5px; }
.seg button.on { background: var(--panel-solid); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.25); }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.stat { background: var(--panel-2); border-radius: 14px; padding: 12px 14px; }
.stat b { display: block; font-size: 24px; letter-spacing: -0.03em; font-weight: 700; line-height: 1.15; }
.stat span { font-size: 12px; color: var(--muted); }

.ring { position: relative; flex: none; }
.ring svg { display: block; }
.ring-arc { animation: ring-in 1s cubic-bezier(.2,.8,.2,1) both; }
@keyframes ring-in { from { stroke-dasharray: 0 1000; } }
.ring-in { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; line-height: 1.1; }

.chart { display: block; width: 100%; height: auto; overflow: visible; touch-action: pan-y; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .line { fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.chart .dashed { stroke-dasharray: 4 5; opacity: .8; }
.chart .hover { stroke: var(--muted); stroke-dasharray: 3 3; }
.chart .dot { stroke: var(--panel-solid); stroke-width: 2; }
.chart .target { stroke-dasharray: 5 4; stroke-width: 1.5; opacity: .7; }
.chart-box { width: 100%; min-height: 120px; }
.label { font-size: 11.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-weight: 600; margin: 18px 0 8px; }

.tip {
  position: fixed; z-index: 50; pointer-events: none; opacity: 0;
  background: rgba(12, 14, 19, .94); color: #eef1f6; border: 1px solid rgba(255,255,255,.1);
  padding: 8px 11px; border-radius: 10px; font-size: 12.5px; line-height: 1.45;
  box-shadow: 0 10px 30px rgba(0,0,0,.4); transition: opacity .12s; white-space: nowrap;
  backdrop-filter: blur(8px);
}

/* heatmap */
.hm-scroll { overflow: hidden; }
.hm { display: inline-block; }
.hm-months { display: grid; gap: var(--gap); margin-left: 30px; font-size: 11px; color: var(--muted); height: 17px; }
.hm-months span { white-space: nowrap; overflow: visible; width: var(--cell); }
.hm-body { display: flex; gap: 6px; }
.hm-days { display: grid; grid-template-rows: repeat(7, var(--cell)); gap: var(--gap); font-size: 10px; color: var(--muted); width: 24px; }
.hm-days span { line-height: var(--cell); }
.hm-grid { display: grid; grid-template-rows: repeat(7, var(--cell)); gap: var(--gap); grid-auto-flow: column; }
.hm-cell { width: var(--cell); height: var(--cell); border-radius: calc(var(--cell) / 4); background: var(--empty); transition: transform .1s; }
.hm-cell.future { background: transparent; }
.hm-cell[data-l="1"] { background: color-mix(in srgb, var(--c) 32%, var(--empty)); }
.hm-cell[data-l="2"] { background: color-mix(in srgb, var(--c) 56%, var(--empty)); }
.hm-cell[data-l="3"] { background: color-mix(in srgb, var(--c) 80%, var(--empty)); }
.hm-cell[data-l="4"] { background: var(--c); box-shadow: 0 0 8px color-mix(in srgb, var(--c) 45%, transparent); }
.hm-cell.today { outline: 1.5px solid var(--muted); outline-offset: 1px; }
.hm-cell.sel { outline: 2px solid var(--text); outline-offset: 1px; }
.hm-cell.click { cursor: pointer; }
@media (hover: hover) { .hm-cell:not(.future):hover { transform: scale(1.25); } }
.hm-legend { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--muted); justify-content: flex-end; margin-top: 8px; }
.hm-legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.fade-in { animation: fade-up .5s cubic-bezier(.2,.8,.2,1) both; }
@keyframes fade-up { from { transform: translateY(12px); } }

@media (max-width: 640px) {
  .wrap { padding-top: max(18px, env(safe-area-inset-top)); }
  .card { padding: 16px; border-radius: 20px; margin-top: 12px; }
  h1 { font-size: 26px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat b { font-size: 21px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}