:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #14141f;
  --bg-tertiary: #1e1e2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --accent: #00d4ff;
  --accent-secondary: #00ff88;
  --danger: #ff4466;
  --focus-ring: #00d4ff;
  --focus-glow: rgba(0, 212, 255, 0.4);
  --radius-md: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  width: 600px; height: 600px; overflow: hidden;
  background: #000;
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
#app { width: 100%; height: 100%; position: relative; }
.screen { width: 100%; height: 100%; position: absolute; top: 0; left: 0; display: flex; flex-direction: column; }
.screen.hidden { display: none; }
.focusable { transition: all 0.15s ease; border: 2px solid transparent; cursor: pointer; outline: none; }
.focusable:focus { border-color: var(--focus-ring); box-shadow: 0 0 20px var(--focus-glow); }
.hidden { display: none !important; }

.hdr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--bg-tertiary);
}
.hdr-label {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
}
.hdr-stat {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.timer-wrap {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px;
}
.ring {
  position: relative;
  width: 320px;
  height: 320px;
}
.ring svg {
  transform: rotate(-90deg);
}
.ring-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 8;
}
.ring-fg {
  fill: none;
  stroke: var(--accent);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 565.48;
  transition: stroke-dashoffset 0.5s linear, stroke 0.3s ease;
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.5));
}
.ring.running .ring-fg { stroke: var(--accent-secondary); filter: drop-shadow(0 0 10px rgba(0, 255, 136, 0.6)); }
.ring.paused .ring-fg { stroke: var(--danger); filter: drop-shadow(0 0 8px rgba(255, 68, 102, 0.5)); }

.timer-center {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.time {
  font-size: 76px;
  font-weight: 200;
  letter-spacing: -2px;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.phase {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--text-secondary);
  font-weight: 600;
}

.ctrl-row {
  display: flex;
  gap: 12px;
  padding: 0 28px 16px;
}
.btn {
  flex: 1;
  height: 56px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  font-family: inherit;
}
.btn-primary {
  background: var(--accent);
  color: #001018;
}
.btn-primary.running {
  background: var(--danger);
  color: #fff;
}

.counter-strip {
  display: flex;
  padding: 14px 28px 22px;
  gap: 12px;
  background: var(--bg-primary);
  border-top: 1px solid var(--bg-tertiary);
}
.counter-item {
  flex: 1;
  text-align: center;
}
.counter-val {
  font-size: 26px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.counter-lbl {
  margin-top: 4px;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
}

.dur-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  padding: 24px 28px;
  align-content: center;
}
.dur-card {
  background: var(--bg-secondary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: 24px 8px;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  min-height: 130px;
}
.dur-card.active {
  background: var(--bg-tertiary);
  border-color: var(--accent);
}
.dur-min {
  font-size: 44px;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
}
.dur-lbl {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--text-secondary);
}

.done-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
  padding: 32px;
}
.done-mark {
  font-size: 120px;
  color: var(--accent-secondary);
  line-height: 1;
  text-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
}
.done-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--text-primary);
}
.done-sub {
  font-size: 16px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}
.done-btn {
  margin-top: 24px;
  min-width: 240px;
  flex: 0 0 auto;
}