/* Motor Babble: warm-nursery styling. Layout is a two-column grid (canvas + sidebar)
   with the key strip pinned to the bottom. Palette matches PALETTE in js/config.js. */

:root {
  --wall-top: #f6e7d7;
  --wall-bottom: #f0d9c0;
  --paper: #fffaf1;
  --paper-2: #fff4e0;
  --ink: #3a2712;
  --ink-soft: #7a5a3a;
  --accent: #c67c2e;
  --accent-2: #e8b45c;
  --key-bg: #fff7ea;
  --key-bg-active: #ffe0a8;
  --key-border: #d7b58a;
  --pip-off: #eddccb;
  --pip-on: #ffd68a;
  --calm: linear-gradient(90deg, #a3d9c0, #ffd68a, #e97d6a);
  --meltdown-red: #e04a3f;
  --shadow: 0 4px 18px rgba(90, 60, 30, 0.12);
  --font-display: "Baloo 2", "Nunito", "Comic Sans MS", ui-rounded, "SF Pro Rounded", system-ui, sans-serif;
  --font-body: ui-rounded, "SF Pro Rounded", "Nunito", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, var(--wall-top), var(--wall-bottom));
  color: var(--ink);
  font-family: var(--font-body);
  overflow: hidden;
}

button {
  font-family: inherit;
  color: inherit;
  cursor: pointer;
}

#mb-app {
  display: grid;
  grid-template-columns: 1fr 340px;
  grid-template-rows: 1fr auto;
  height: 100vh;
  min-height: 480px;
  gap: 0;
}

#mb-canvas-wrap {
  position: relative;
  grid-column: 1 / 2;
  grid-row: 1 / 2;
  min-width: 0;
  min-height: 0;
}

#mb-canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: linear-gradient(180deg, #f6e7d7 0%, #f0d9c0 72%, #c9a17a 72%, #b08a63 100%);
}

#mb-touch-warning[hidden] { display: none !important; }
#mb-touch-warning {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(255, 250, 240, 0.85);
  pointer-events: none;
}
#mb-touch-warning .tw-inner {
  background: var(--paper);
  padding: 22px 28px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  max-width: 320px;
  text-align: center;
}
#mb-touch-warning h2 { margin: 0 0 8px; font-family: var(--font-display); font-size: 20px; }
#mb-touch-warning p { margin: 0; color: var(--ink-soft); font-size: 14px; }

#mb-sidebar {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  background: var(--paper);
  border-left: 1px solid #e6cbb0;
  padding: 18px 18px 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: -6px 0 18px rgba(90, 60, 30, 0.05);
}

#mb-sidebar header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.3px;
  color: var(--ink);
}
#mb-sidebar header .tagline {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.hud-block {
  background: var(--paper-2);
  border-radius: 14px;
  padding: 10px 12px;
  border: 1px solid #ecd2ad;
}

.hud-row { display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.hud-row .label { color: var(--ink-soft); }
.hud-row .value { font-weight: 600; font-size: 15px; }
.mono { font-family: "SF Mono", ui-monospace, Menlo, monospace; letter-spacing: 0.5px; }

.meter-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--ink-soft);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Distance meter */
#mb-distance-track {
  position: relative;
  height: 26px;
  background: #f7dfb8;
  border-radius: 13px;
  overflow: hidden;
  border: 1px solid #dcb787;
}
#mb-distance-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, #ffdca3, #ffb56b);
  transition: width 120ms linear;
}
#mb-distance-baby {
  position: absolute;
  top: 3px;
  left: 0;
  font-size: 20px;
  transition: left 120ms linear;
}
.dt-endcap {
  position: absolute;
  top: 4px;
  font-size: 15px;
  color: #6f4a26;
  opacity: 0.7;
}
.dt-endcap.left { left: 4px; }
.dt-endcap.right { right: 6px; }

/* Milestone pips */
#mb-milestones {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}
.milestone-pip {
  background: var(--pip-off);
  border-radius: 10px;
  padding: 6px 4px;
  text-align: center;
  border: 1px solid #dcb787;
  opacity: 0.55;
  transition: opacity 300ms, background 300ms, transform 200ms;
}
.milestone-pip.lit {
  opacity: 1;
  background: var(--pip-on);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 3px 8px rgba(200, 140, 60, 0.35);
}
.pip-emoji { font-size: 22px; }
.pip-title { font-size: 9.5px; color: var(--ink); line-height: 1.1; margin-top: 2px; }

/* Calm meter */
#mb-calm-track {
  height: 14px;
  background: #f2dcbc;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #dcb787;
}
#mb-calm-fill {
  height: 100%;
  width: 80%;
  background: var(--calm);
  transition: width 120ms linear;
}
#mb-calm-fill.low { animation: pulse 1.2s infinite; }
#mb-calm-fill.meltdown { animation: pulse 0.4s infinite; }
@keyframes pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.15); }
}

/* Evolution / sparkline */
#mb-generation-status {
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
#mb-fitness-sparkline {
  width: 100%;
  height: 42px;
  background: #fff5df;
  border-radius: 8px;
  border: 1px solid #ecd2ad;
}
.tiny-btn {
  border: 1px solid #d0a870;
  background: var(--paper);
  border-radius: 999px;
  width: 22px;
  height: 22px;
  padding: 0;
  color: var(--ink-soft);
  font-weight: 700;
  cursor: pointer;
}
.tiny-btn:hover { background: #fff2d2; color: var(--ink); }

/* Journal */
.journal-block { max-height: 220px; overflow: hidden; }
#mb-journal {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 190px;
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.35;
  color: var(--ink);
}
#mb-journal li {
  padding: 6px 8px;
  border-radius: 8px;
  background: #fff8e6;
  margin-bottom: 5px;
  border-left: 3px solid var(--accent-2);
  animation: fadeIn 280ms ease-out both;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Buttons */
.button-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.button-block button {
  padding: 10px 8px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: linear-gradient(180deg, var(--accent-2), #d69539);
  color: #3a2712;
  font-weight: 700;
  font-size: 13px;
  transition: transform 100ms, box-shadow 100ms;
}
.button-block button:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(200, 140, 60, 0.4); }
.button-block button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  background: #e7cca0;
}
.button-block button.driving {
  background: linear-gradient(180deg, #a8d8c9, #6db8a1);
  color: #123024;
  border-color: #4a9a80;
}

/* Key strip */
#mb-keystrip {
  grid-column: 1 / 2;
  grid-row: 2 / 3;
  background: linear-gradient(180deg, rgba(255, 250, 241, 0.9), rgba(255, 244, 224, 0.95));
  border-top: 1px solid #e6cbb0;
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  backdrop-filter: blur(6px);
}
.key-row {
  display: flex;
  gap: 6px;
  justify-content: center;
}
.key-row.row-1 { margin-left: 22px; }
.key-row.row-2 { margin-left: 44px; }
.key {
  width: clamp(52px, 5.8vw, 74px);
  height: clamp(52px, 5.8vw, 66px);
  border-radius: 10px;
  border: 1px solid var(--key-border);
  background: var(--key-bg);
  padding: 4px 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  transition: background 100ms, transform 60ms;
  box-shadow: 0 2px 0 #d7b58a, inset 0 -2px 0 #f7e6c9;
  color: var(--ink);
}
.key .key-letter {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  text-transform: uppercase;
  color: var(--ink);
}
.key .key-label {
  font-size: 9px;
  color: var(--ink-soft);
  text-align: center;
  line-height: 1.1;
  min-height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.key.revealed .key-label { color: var(--accent); font-weight: 600; }
.key.pressed {
  background: var(--key-bg-active);
  transform: translateY(2px);
  box-shadow: 0 0 0 #d7b58a, inset 0 -1px 0 #f7e6c9;
}

/* Overlays: intro and RL popover */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(38, 24, 14, 0.72);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  z-index: 100;
  transition: opacity 300ms;
}
.overlay.hidden { opacity: 0; pointer-events: none; }
.overlay-card {
  background: var(--paper);
  padding: 28px 32px;
  border-radius: 20px;
  max-width: 520px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
}
.overlay-card.small { max-width: 440px; }
.overlay-card h1 {
  font-family: var(--font-display);
  margin: 0 0 12px;
  font-size: 42px;
  color: var(--ink);
  letter-spacing: 0.5px;
}
.overlay-card h2 {
  font-family: var(--font-display);
  margin: 0 0 12px;
  font-size: 22px;
}
.overlay-card p { font-size: 15px; line-height: 1.55; color: var(--ink); margin: 0 0 12px; }
.overlay-card .premise { font-size: 15px; }
.overlay-card .controls-hint {
  margin-top: 12px;
  font-weight: 700;
  color: var(--accent);
  animation: gentleBlink 1.6s infinite;
}
.overlay-card button {
  padding: 10px 22px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: linear-gradient(180deg, var(--accent-2), #d69539);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  margin-top: 4px;
}
@keyframes gentleBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

/* Responsive */
@media (max-width: 980px) {
  #mb-app {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto auto;
  }
  #mb-sidebar {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
    max-height: 40vh;
    border-left: none;
    border-top: 1px solid #e6cbb0;
  }
  #mb-keystrip { grid-row: 3 / 4; }
  .overlay-card h1 { font-size: 32px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}