:root {
  --bg: #0b0b0b;
  --fg: #f3f3f3;
  --muted: #b5b5b5;
  --card: #141414;
  --accent: #7dd3fc;
  --green: #16a34a;
  --red: #dc2626;
  --orange: #f97316;
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Arial,
    sans-serif;
  background: var(--bg);
  color: var(--fg);
  display: grid;
  place-items: center;
  padding: 24px;
  transition: background-color 0.3s ease;
}
.app {
  width: min(960px, 100%);
}
.header {
  text-align: center;
  margin-bottom: 16px;
}
.header h1 {
  margin: 0 0 6px;
  font-size: clamp(28px, 5vw, 40px);
}
.sub {
  color: var(--muted);
  margin: 0;
}
.panel {
  background: var(--card);
  border: 1px solid #222;
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.fields {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
@media (max-width: 900px) {
  .fields {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 520px) {
  .fields {
    grid-template-columns: 1fr;
  }
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  border: 1px solid #222;
  border-radius: 14px;
  background: #0f0f0f;
  transition: background-color 0.3s, border-color 0.3s;
}
.field span {
  font-weight: 600;
}
.field input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #2a2a2a;
  background: #111;
  color: var(--fg);
  font-size: 16px;
  outline: none;
}
.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.15);
}
.field small {
  color: var(--muted);
}
.field[data-field="work"].active {
  background: color-mix(in oklab, var(--green) 25%, #000);
  border-color: var(--green);
}
.field[data-field="restEx"].active {
  background: color-mix(in oklab, var(--red) 25%, #000);
  border-color: var(--red);
}
.field[data-field="restRound"].active {
  background: color-mix(in oklab, var(--orange) 25%, #000);
  border-color: var(--orange);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
}
.btn {
  appearance: none;
  border: 1px solid #2a2a2a;
  background: #111;
  color: var(--fg);
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.06s, background 0.2s, border-color 0.2s;
}
.btn:hover {
  background: #151515;
}
.btn:active {
  transform: translateY(1px);
}
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}
.primary {
  background: linear-gradient(180deg, #1f2937, #0f172a);
  border-color: #334155;
}
.display {
  text-align: center;
  padding: 22px 0;
}
.status {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.3px;
  border: 1px solid #222;
  background: #101010;
}
.progressText {
  color: var(--muted);
}
.timer {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  letter-spacing: 1px;
  font-size: clamp(56px, 12vw, 120px);
  line-height: 1;
  margin: 8px 0 10px;
}
.next {
  color: var(--muted);
  font-size: 14px;
  min-height: 20px;
}
.barWrap {
  width: 100%;
  height: 12px;
  background: #0f0f0f;
  border: 1px solid #222;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 16px;
}
.bar {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--orange));
  transition: width 0.25s linear;
}
.footer {
  text-align: center;
  color: var(--muted);
  margin-top: 14px;
}
.sound {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  margin-left: auto;
  user-select: none;
}