:root {
  --bg: #f4f4f7;
  --card: #ffffff;
  --line: #e6e6ec;
  --ink: #1a1a22;
  --ink-2: #5a5a6b;
  --ink-3: #9191a3;
  --accent: #e2564a;
  --accent-soft: #fdeceb;
  --ok: #2f9e6e;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 40px;
}

.wrap { max-width: 560px; margin: 0 auto; padding: 20px 16px 0; }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 4px 2px 18px;
}
.brand { display: flex; align-items: center; gap: 9px; }
.dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.brand h1 { font-size: 17px; font-weight: 600; margin: 0; letter-spacing: .2px; }
.streak { font-size: 12.5px; color: var(--ink-3); }

/* ---------- card ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
}
.card h2 { font-size: 13px; font-weight: 600; color: var(--ink-2); margin: 0 0 12px; letter-spacing: .3px; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; }
.card-head h2 { margin-bottom: 12px; }
.weak { font-size: 12px; color: var(--ink-3); }

/* ---------- modes ---------- */
.modes {
  display: flex; gap: 4px; padding: 4px;
  background: #f0f0f4; border-radius: 11px;
  margin-bottom: 18px;
}
.mode {
  flex: 1; border: 0; background: transparent;
  padding: 8px 0; border-radius: 8px; cursor: pointer;
  font-size: 13.5px; color: var(--ink-2); font-family: inherit;
  transition: background .18s, color .18s;
}
.mode.is-on { background: #fff; color: var(--ink); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.07); }

/* ---------- ring ---------- */
.ring { position: relative; width: 216px; margin: 0 auto 16px; }
.ring svg { width: 100%; display: block; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: #f0f0f4; stroke-width: 12; }
.ring-fg {
  fill: none; stroke: var(--accent); stroke-width: 12; stroke-linecap: round;
  stroke-dasharray: 678.58; stroke-dashoffset: 0;
  transition: stroke-dashoffset .3s linear, stroke .3s;
}
body.is-short .ring-fg { stroke: var(--ok); }
body.is-long .ring-fg { stroke: #4f7ff0; }

.center {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.clock {
  font-size: 48px; font-weight: 600; letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.hint { font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }

/* ---------- input ---------- */
.task-input {
  width: 100%; border: 1px solid var(--line); background: #fbfbfd;
  border-radius: 11px; padding: 11px 13px; font-size: 14px;
  color: var(--ink); font-family: inherit; outline: none;
}
.task-input:focus { border-color: #d3d3de; background: #fff; }

/* ---------- controls ---------- */
.controls { display: flex; gap: 8px; margin-top: 12px; }
.btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink-2);
  padding: 11px 18px; border-radius: 11px; cursor: pointer;
  font-size: 14px; font-family: inherit;
  transition: background .15s, border-color .15s, transform .06s;
}
.btn:hover { background: #fafafd; }
.btn:active { transform: translateY(1px); }
.btn-main {
  flex: 1; background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600;
}
.btn-main:hover { background: #d54a3e; }
body.is-break .btn-main { background: var(--ok); border-color: var(--ok); }

/* ---------- stats ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.grid .card { margin: 0; text-align: center; padding: 14px 8px; }
.label { display: block; font-size: 12px; color: var(--ink-3); margin-bottom: 4px; }
.stat strong { font-size: 24px; font-weight: 600; font-variant-numeric: tabular-nums; }
.unit { font-size: 12px; color: var(--ink-3); margin-left: 2px; }

/* ---------- bars ---------- */
.bars { display: flex; align-items: flex-end; gap: 8px; height: 92px; }
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; }
.bar {
  width: 100%; background: #f0f0f4; border-radius: 6px; flex: 1;
  display: flex; align-items: flex-end; overflow: hidden;
}
.bar span { display: block; width: 100%; background: var(--accent); border-radius: 6px; min-height: 3px; }
.bar.today span { background: #1a1a22; }
.bar-x { font-size: 11px; color: var(--ink-3); }

/* ---------- log ---------- */
.log { list-style: none; margin: 0; padding: 0; max-height: 210px; overflow-y: auto; }
.log li {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 0; border-top: 1px solid #f2f2f6;
}
.log li:first-child { border-top: 0; }
.log .t { font-size: 12.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.log .n { flex: 1; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.log .n.none { color: var(--ink-3); }
.tag {
  font-size: 11px; padding: 2px 7px; border-radius: 20px;
  background: var(--accent-soft); color: var(--accent); white-space: nowrap;
}
.tag.rest { background: #e8f5ef; color: var(--ok); }
.empty { font-size: 13px; color: var(--ink-3); margin: 4px 0 0; }

/* ---------- settings ---------- */
.settings { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.settings label {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--ink-2);
}
.settings input {
  width: 62px; border: 1px solid var(--line); border-radius: 8px;
  padding: 7px 8px; font-size: 13.5px; font-family: inherit;
  color: var(--ink); text-align: center; outline: none; background: #fbfbfd;
}
.settings input:focus { border-color: #d3d3de; }
.settings span { font-size: 12px; color: var(--ink-3); }

.switches { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 14px; }
.sw { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); cursor: pointer; }
.sw input { display: none; }
.sw span {
  width: 34px; height: 20px; border-radius: 20px; background: #dedee6;
  position: relative; transition: background .2s; flex: 0 0 auto;
}
.sw span::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 16px; height: 16px; border-radius: 50%; background: #fff;
  transition: transform .2s; box-shadow: 0 1px 2px rgba(0,0,0,.2);
}
.sw input:checked + span { background: var(--accent); }
.sw input:checked + span::after { transform: translateX(14px); }

.linkbtn {
  border: 0; background: none; color: var(--ink-3); font-size: 12px;
  cursor: pointer; font-family: inherit; padding: 0;
}
.linkbtn:hover { color: var(--accent); }

.tip { font-size: 12px; color: var(--ink-3); margin: 14px 0 0; line-height: 1.7; }
.foot { text-align: center; font-size: 12px; color: #b3b3c1; padding: 8px 0 20px; }

@media (max-width: 420px) {
  .clock { font-size: 42px; }
  .ring { width: 190px; }
  .grid { gap: 8px; }
  .stat strong { font-size: 21px; }
}