/* 专注番茄钟 —— 独立样式表，验证子项目相对路径资源在 /projects/focus-timer/ 下正常解析 */
:root {
  --brand: #1677ff;
  --brand-dark: #0958d9;
  --danger: #f5222d;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --surface: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
  font-family: Inter, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(1000px 520px at 50% -15%, #dbeafe 0%, #f5f7fa 60%, #f5f7fa 100%);
}

.app {
  width: min(440px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 28px 22px;
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
}

.app__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.app__logo { border-radius: 10px; }

.app__header h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.app__mode {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
}

/* ------------------------------- 圆盘 ------------------------------- */
.dial {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 26px auto 20px;
}

.dial__svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.dial__track {
  fill: none;
  stroke: #f0f2f5;
  stroke-width: 14;
}

.dial__bar {
  fill: none;
  stroke: var(--brand);
  stroke-width: 14;
  stroke-linecap: round;
  /* 2πr ≈ 653.45，供 JS 通过 stroke-dashoffset 控制进度 */
  stroke-dasharray: 653.45;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.4s linear, stroke 0.3s ease;
}

.dial--break .dial__bar { stroke: #52c41a; }

.dial__center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
}

.dial__time {
  font-family: "JetBrains Mono", ui-monospace, Consolas, monospace;
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.dial__round {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

/* ------------------------------ 控制按钮 ----------------------------- */
.controls {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.btn {
  flex: 1;
  padding: 11px 18px;
  font-size: 14px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover { border-color: #c6e2ff; color: var(--brand); }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  font-weight: 500;
}

.btn--primary:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: #fff;
}

/* ------------------------------- 设置 ------------------------------- */
.settings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.settings label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.settings input {
  width: 100%;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  outline: none;
}

.settings input:focus { border-color: var(--brand); box-shadow: 0 0 0 2px #1677ff1f; }

/* ------------------------------- 页脚 ------------------------------- */
.app__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.app__footer strong { color: var(--brand); }
.app__footer a { color: var(--brand); text-decoration: none; }
.app__footer a:hover { text-decoration: underline; }

@media (max-width: 420px) {
  .app { padding: 22px 18px 18px; }
  .dial { width: 200px; height: 200px; }
  .dial__time { font-size: 36px; }
}