:root {
  --bg: #f4f2ee;
  --surface: #ffffff;
  --line: #e2ded6;
  --track: #ebe7df;
  --text: #1c1b19;
  --muted: #6b675f;
  --low: #3d6fb4;
  --low-bg: #e6eef9;
  --ok: #2f7d4f;
  --ok-bg: #e2f2e7;
  --hot: #a8650a;
  --hot-bg: #fbecd2;
  --limit: #b3362b;
  --limit-bg: #fae3e0;
  --idle: #6b675f;
  --idle-bg: #ebe7df;
  --radius: 14px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.45;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131312;
    --surface: #1d1d1b;
    --line: #2e2d2a;
    --track: #2b2a27;
    --text: #efede8;
    --muted: #a09c93;
    --low: #7fa8e6;
    --low-bg: #1c2a40;
    --ok: #6cc18c;
    --ok-bg: #18301f;
    --hot: #e8a84a;
    --hot-bg: #3a2a10;
    --limit: #f0867b;
    --limit-bg: #3d1b18;
    --idle: #a09c93;
    --idle-bg: #2b2a27;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); -webkit-text-size-adjust: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 20px 16px calc(32px + env(safe-area-inset-bottom)); }
h1, h2, h3, p { margin: 0; }
.muted { color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }

/* header */
.top { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.top h1 { font-size: 1.05rem; font-weight: 650; letter-spacing: 0.01em; }
.top .spacer { flex: 1; }
.headline { font-size: clamp(1.35rem, 4.2vw, 1.9rem); font-weight: 650; line-height: 1.2; letter-spacing: -0.015em; margin: 10px 0 4px; text-wrap: balance; }
.subline { color: var(--muted); font-size: 0.9rem; margin-bottom: 20px; }

.btn { font: inherit; font-size: 0.875rem; font-weight: 550; padding: 8px 14px; border-radius: 9px; border: 1px solid var(--text); background: var(--text); color: var(--bg); cursor: pointer; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--low); outline-offset: 2px; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.card-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.card-head h2 { font-size: 1.1rem; font-weight: 650; }
.card-head .plan { color: var(--muted); font-size: 0.85rem; }
.chip { margin-left: auto; font-size: 0.78rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; white-space: nowrap; color: var(--c); background: var(--c-bg); }
[data-state="low"] { --c: var(--low); --c-bg: var(--low-bg); }
[data-state="ok"] { --c: var(--ok); --c-bg: var(--ok-bg); }
[data-state="hot"] { --c: var(--hot); --c-bg: var(--hot-bg); }
[data-state="limit"] { --c: var(--limit); --c-bg: var(--limit-bg); }
[data-state="idle"] { --c: var(--idle); --c-bg: var(--idle-bg); }

.meter { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: baseline; }
.meter .label { font-size: 0.875rem; font-weight: 550; }
.meter .value { font-size: 1.5rem; font-weight: 650; letter-spacing: -0.02em; }
.meter .value small { font-size: 0.8rem; font-weight: 500; color: var(--muted); letter-spacing: 0; margin-left: 2px; }
.meter .bar { grid-column: 1 / -1; position: relative; height: 10px; border-radius: 999px; background: var(--track); }
.meter .fill { position: absolute; inset: 0 auto 0 0; border-radius: 999px; background: var(--c, var(--idle)); min-width: 3px; }
.meter .pace { position: absolute; top: -4px; bottom: -4px; width: 2px; border-radius: 2px; background: var(--text); opacity: 0.75; transform: translateX(-1px); }
.meter .sub { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 12px; font-size: 0.8rem; color: var(--muted); }

.insight { font-size: 0.9rem; }
.card-foot { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); display: grid; gap: 6px; font-size: 0.82rem; color: var(--muted); }
.card-foot .row { display: flex; justify-content: space-between; gap: 12px; }
.card-foot .row span:last-child { text-align: right; }
.card-foot .warn { color: var(--hot); }
.cycle { height: 4px; border-radius: 4px; background: var(--track); overflow: hidden; }
.cycle i { display: block; height: 100%; background: var(--muted); }

.weeks { display: flex; align-items: flex-end; gap: 4px; height: 28px; }
.weeks i { width: 10px; border-radius: 3px 3px 0 0; background: var(--muted); opacity: 0.55; min-height: 2px; }

.big { font-size: 2rem; font-weight: 650; letter-spacing: -0.02em; line-height: 1.1; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stats div { background: var(--bg); border-radius: 10px; padding: 10px; }
.stats b { display: block; font-size: 1.05rem; font-weight: 650; }
.stats span { font-size: 0.75rem; color: var(--muted); }
.empty { font-size: 0.9rem; color: var(--muted); }

.legend { margin-top: 18px; font-size: 0.8rem; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.legend i { display: inline-block; width: 2px; height: 14px; background: var(--text); opacity: 0.75; border-radius: 2px; }

/* login */
.login { max-width: 340px; margin: 18vh auto 0; display: grid; gap: 12px; }
.login h1 { font-size: 1.4rem; }
input, select { font: inherit; padding: 10px 12px; border-radius: 9px; border: 1px solid var(--line); background: var(--surface); color: var(--text); width: 100%; min-width: 0; }
.error { color: var(--limit); font-size: 0.875rem; min-height: 1.3em; }

/* settings dialog */
dialog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--text); padding: 20px; width: min(520px, calc(100vw - 32px)); }
dialog::backdrop { background: rgb(0 0 0 / 0.45); }
dialog h2 { font-size: 1.15rem; margin-bottom: 4px; }
.set-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-top: 16px; }
.set-row h3 { grid-column: 1 / -1; font-size: 0.9rem; font-weight: 600; }
.set-row label { display: grid; gap: 4px; font-size: 0.75rem; color: var(--muted); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; }