:root {
  /* Palette */
  --surface-warm-100: #fdf6ee;
  --surface-cool-200: #d3e4ef;
  --accent-energy: #ff6b35;
  --accent-success: #4ade80;
  --accent-drift: #f87171;
  --text-primary: #1e1b18;
  --text-secondary: #6b6560;

  /* 12-column grid */
  --column-count: 12;
  --column-gap: 1.5rem;
  --gutter: clamp(1rem, 3vw, 2rem);

  /* Fib space tokens */
  --space-break-fib-1: 0.25rem;
  --space-break-fib-2: 0.5rem;
  --space-break-fib-3: 0.75rem;
  --space-break-fib-4: 1.25rem;
  --space-break-fib-5: 2rem;
  --space-break-fib-6: 3.25rem;

  /* Fluid type scale */
  --type-xs: clamp(0.65rem, 0.65vw + 0.3rem, 0.8rem);
  --type-sm: clamp(0.8rem, 0.8vw + 0.4rem, 1rem);
  --type-base: clamp(1rem, 1vw + 0.5rem, 1.25rem);
  --type-lg: clamp(1.25rem, 1.5vw + 0.6rem, 1.75rem);
  --type-xl: clamp(1.75rem, 2.5vw + 0.8rem, 2.5rem);
  --type-2xl: clamp(2.5rem, 4vw + 1rem, 4rem);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--surface-warm-100);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

#app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: var(--gutter);
  position: relative;
}

/* 12-column grid overlay */
.grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  display: none;
  grid-template-columns: repeat(var(--column-count), 1fr);
  gap: var(--column-gap);
  padding: 0 var(--gutter);
}

.grid-overlay.visible {
  display: grid;
}

.grid-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to right,
    transparent,
    transparent calc(100% / var(--column-count) - var(--column-gap) / 2),
    var(--surface-cool-200) calc(100% / var(--column-count) - var(--column-gap) / 2),
    var(--surface-cool-200) calc(100% / var(--column-count))
  );
  opacity: 0.15;
}

.grid-overlay.pulse::before {
  animation: grid-pulse 0.15s steps(1);
}

@keyframes grid-pulse {
  0% { opacity: 0.15; }
  50% { opacity: 0.5; }
  100% { opacity: 0.15; }
}

/* Tagline */
.tagline {
  text-align: center;
  padding: var(--space-break-fib-5) 0;
  position: relative;
  z-index: 1;
}

.tagline h1 {
  font-size: var(--type-2xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1.1;
}

/* Break Room layout on 12-column grid */
.break-room {
  display: grid;
  grid-template-columns: repeat(var(--column-count), 1fr);
  gap: var(--column-gap);
  padding: var(--space-break-fib-4) var(--gutter);
  position: relative;
  z-index: 1;
}

/* Panels */
.panel {
  background: var(--surface-warm-100);
  border: 2px solid var(--surface-cool-200);
  border-radius: var(--space-break-fib-3);
  padding: var(--space-break-fib-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-break-fib-3);
  transition: transform 0.08s steps(1), border-color 0.2s;
}

.panel.snap {
  transform: translateY(-2px);
  border-color: var(--accent-energy);
}

/* Espresso panel: columns 1-6 */
.espresso-panel {
  grid-column: 1 / 7;
  min-height: 280px;
}

/* Karaoke panel: columns 7-9 */
.karaoke-panel {
  grid-column: 7 / 10;
  min-height: 280px;
}

/* Snacks panel: columns 10-12 */
.snacks-panel {
  grid-column: 10 / 13;
  min-height: 280px;
  gap: var(--space-break-fib-2);
}

/* Espresso machine icon */
.machine-icon {
  font-size: var(--type-2xl);
  line-height: 1;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
  transition: transform 0.1s steps(1);
}

.machine-icon.syncing {
  transform: scale(1.08);
}

/* Karaoke mic */
.mic-icon {
  font-size: var(--type-2xl);
  line-height: 1;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
  opacity: 0.4;
  transition: opacity 0.3s, transform 0.1s steps(1);
}

.mic-icon.active {
  opacity: 1;
}

.mic-icon.snap {
  transform: scale(1.1);
}

/* Snacks */
.snack-item {
  font-size: var(--type-xl);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s, transform 0.1s steps(1);
}

.snack-item.visible {
  opacity: 1;
  transform: scale(1);
}

/* Extraction timer */
.extraction-timer {
  font-size: var(--type-lg);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

/* Drift meter */
.drift-meter {
  width: 100%;
  max-width: 200px;
  height: 6px;
  background: var(--surface-cool-200);
  border-radius: 3px;
  overflow: hidden;
}

.drift-meter-fill {
  width: 0%;
  height: 100%;
  background: var(--accent-success);
  border-radius: 3px;
  transition: width 0.1s steps(1), background 0.2s;
}

.drift-meter-fill.drifting {
  background: var(--accent-drift);
}

/* Beat indicators */
.beat-indicators {
  display: flex;
  gap: var(--space-break-fib-2);
}

.beat-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--surface-cool-200);
  transition: background 0.08s steps(1), transform 0.08s steps(1);
}

.beat-dot.active {
  background: var(--accent-energy);
  transform: scale(1.35);
}

.beat-dot.held {
  background: var(--accent-success);
  transform: scale(1.5);
}

/* Status text */
.status-text {
  font-size: var(--type-sm);
  color: var(--text-secondary);
  text-align: center;
}

/* Ship bar */
.ship-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-break-fib-3);
  padding: var(--space-break-fib-5);
  position: relative;
  z-index: 1;
}

#ship-text {
  font-size: var(--type-base);
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
}

.ship-btn {
  padding: var(--space-break-fib-3) var(--space-break-fib-5);
  font-size: var(--type-base);
  font-weight: 700;
  color: var(--surface-warm-100);
  background: var(--text-primary);
  border: none;
  border-radius: var(--space-break-fib-2);
  cursor: pointer;
  transition: transform 0.08s steps(1), opacity 0.2s;
  opacity: 0.4;
  pointer-events: none;
}

.ship-btn:not(:disabled) {
  opacity: 1;
  pointer-events: auto;
}

.ship-btn:not(:disabled):active {
  transform: scale(0.97);
}

/* Responsive: stack on mobile */
@media (max-width: 640px) {
  .break-room {
    grid-template-columns: 1fr;
  }

  .espresso-panel,
  .karaoke-panel,
  .snacks-panel {
    grid-column: 1 / -1;
  }
}