:root {
  --bg: #14110e;
  --panel: #231d17;
  --border: #5c4a32;
  --gold: #c9a227;
  --cream: #e8dcc8;
  --muted: #9a8b72;
  --work: #d45d3a;
  --rest: #4a9e7a;
  --header-bg: #dcdcdc;
  --header-text: #1a1612;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Georgia, serif;
  background: var(--bg);
  color: var(--cream);
}

header {
  text-align: left;
  padding: 1.2rem 1.5rem;
  border-bottom: 2px solid var(--border);
}

header h1 {
  margin: 0;
  color: var(--gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 1.3rem;
}

header p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

main {
  max-width: 480px;
  margin: 0;
  padding: 1rem 1.5rem 3rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.panel h2 {
  margin: -1rem -1rem 0.75rem;
  padding: 0.55rem 0.75rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--header-text);
  background: var(--header-bg);
  border-bottom: 1px solid #000;
  border-radius: 6px 6px 0 0;
}

.timer-panel {
  text-align: left;
  padding: 1.5rem 1.25rem;
}

.timer-panel.phase-work { border-color: var(--work); }
.timer-panel.phase-rest { border-color: var(--rest); }
.timer-panel.phase-done { border-color: var(--gold); }

.phase-label {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.phase-work .phase-label { color: var(--work); }
.phase-rest .phase-label { color: var(--rest); }
.phase-done .phase-label { color: var(--gold); }

.timer-display {
  margin: 0;
  font-size: clamp(3.5rem, 18vw, 5rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--cream);
}

.round-label {
  margin: 0.75rem 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.progress-track {
  height: 6px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--gold);
  transition: width 0.2s linear;
}

.phase-work .progress-fill { background: var(--work); }
.phase-rest .progress-fill { background: var(--rest); }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

button {
  font: inherit;
  padding: 0.65rem 1.1rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--border);
  color: var(--cream);
  cursor: pointer;
}

button:hover:not(:disabled) { filter: brightness(1.1); }
button:disabled { opacity: 0.45; cursor: not-allowed; }

button.primary {
  background: var(--gold);
  color: #14110e;
  border-color: var(--gold);
  font-weight: 600;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

label.checkbox-row {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0;
}

input[type="number"] {
  padding: 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #1a1612;
  color: var(--cream);
  font: inherit;
  max-width: 6rem;
}

footer {
  text-align: left;
  padding: 0.75rem 1.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

footer a { color: var(--gold); text-decoration: none; }
footer a:hover { text-decoration: underline; }