body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  background: var(--color-background);
  transition: background-color 0.5s ease;
}

body.timer-complete {
  background: var(--color-primary);
}

.timer-page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  min-height: 100vh;
}

.timer-tool {
  background: white;
  padding: 5vh;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-align: center;
  width: 100%;
  max-width: 1400px;
  transition: transform 0.3s ease;
}

.timer-complete .timer-tool {
  transform: scale(1.05);
}

.timer-display {
  font-size: min(25vw, 400px);
  font-weight: 600;
  margin: 0.2em 0;
  font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--color-text);
  letter-spacing: 4px;
  transition: color 0.3s ease;
  line-height: 1;
}

.timer-complete .timer-display {
  color: var(--color-primary);
}

.timer-complete .timer-display {
  color: var(--color-primary);
}

.timer-display.running {
  color: var(--color-primary);
}

.target-display {
  font-size: min(4vw, 48px);
  color: var(--color-text-secondary);
  margin: -20px 0 20px;
  font-weight: 500;
}

.timer-complete .target-display {
  color: var(--color-primary);
}

.quick-presets {
  display: flex;
  gap: min(3vw, 20px);
  justify-content: center;
  margin: 30px 0;
  flex-wrap: wrap;
}

.quick-preset {
  padding: min(3vh, 16px) min(4vw, 32px);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: min(3vw, 20px);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-width: min(15vw, 100px);
}

.quick-preset:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.timer-controls {
  margin: 25px 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
}

.adjust-buttons {
  display: flex;
  gap: min(3vw, 20px);
  justify-content: center;
  margin: 30px 0;
  flex-wrap: wrap;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.adjust-btn {
  min-width: min(15vw, 80px);
  padding: min(3vh, 16px) min(4vw, 24px);
  font-size: min(3vw, 20px);
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.end-btn {
  min-width: min(20vw, 160px);
  background: var(--color-primary);
  color: white;
  border: none;
  font-weight: 600;
  font-size: min(3vw, 24px);
  padding: min(3vh, 20px) min(4vw, 32px);
}

.end-btn:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.end-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--color-primary);
  transform: none;
}

.main-controls {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.start-btn,
.reset-btn,
.adjust-btn,
.mode-toggle,
.end-btn {
  padding: 16px 32px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-size: 20px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 120px;
}

.start-btn {
  background: var(--color-primary);
  color: white;
  border: none;
  min-width: 140px;
}

.start-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.reset-btn,
.adjust-btn,
.mode-toggle {
  background: var(--color-background);
  color: var(--color-text);
}

.reset-btn:hover,
.adjust-btn:hover,
.mode-toggle:hover {
  background: var(--color-background-dark);
  transform: translateY(-2px);
}

.reset-btn:disabled,
.adjust-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--color-background);
  transform: none;
}

.reset-btn {
  min-width: min(15vw, 120px);
  font-size: min(3vw, 20px);
  padding: min(3vh, 16px) min(4vw, 32px);
}

.reset-btn:hover:not(:disabled),
.adjust-btn:hover:not(:disabled) {
  background: var(--color-background-dark);
  transform: translateY(-2px);
}

.reset-btn:disabled,
.adjust-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--color-background);
  transform: none;
}

.time-input {
  width: 80px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  text-align: center;
  font-size: 16px;
  font-family: var(--font-mono);
}

.time-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.laps-list {
  margin-top: 20px;
  max-height: 200px;
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
}

.lap-item {
  padding: 10px;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 14px;
}

.multiplier-buttons {
  display: flex;
  gap: 0.25rem;
  justify-content: center;
  margin: 0.5rem 0;
}

.multiplier-btn {
  min-width: 2.5rem;
  padding: 0.5rem;
  background: var(--bg-secondary);
  border: none;
  border-radius: 8px;
  color: var(--text-color);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
}

.multiplier-btn:hover {
  opacity: 0.9;
}

.multiplier-btn.active {
  background: var(--primary-color);
  color: white;
}