:root {
  --bg: #0d1014;
  --panel: #151a1f;
  --panel-deep: #0b1015;
  --text: #d8d3c6;
  --accent: #d5b164;
  --accent-strong: #f0cf88;
  --danger: #d96c63;
  --border: #3a342b;
  --border-soft: #5b4d33;
  --shadow: rgba(0, 0, 0, 0.42);
  --ui-font: "Trebuchet MS", "Segoe UI", sans-serif;
  --display-font: "Palatino Linotype", "Book Antiqua", serif;
  --mono-font: "Consolas", "Lucida Console", monospace;
  --app-width: 100vw;
  --app-height: 100vh;
}

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

html, body {
  width: 100%;
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  background:
    radial-gradient(circle at top, rgba(72, 62, 36, 0.22), transparent 42%),
    linear-gradient(180deg, #08090b, #050607 62%, #040404);
  touch-action: none;
  overscroll-behavior: none;
}

body {
  color: var(--text);
  font-family: var(--ui-font);
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: center;
  width: var(--app-width, 100vw);
  height: var(--app-height, 100vh);
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

@supports (height: 100dvh) {
  html, body {
    height: 100dvh;
    min-height: 100dvh;
  }
}

/* ── Main layout: canvas + panel fill viewport height ── */
.wrap {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), transparent 18%),
    linear-gradient(180deg, #101419, #0a0d10);
  border: none;
  height: var(--app-height, 100vh);
  box-shadow: 0 20px 50px var(--shadow);
}

canvas {
  display: block;
  flex-shrink: 0;
  background: #000;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
  /* JS will set width/height to fill viewport height */
}

/* ── Side panel ── */
.ui {
  width: 220px;
  flex-shrink: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.03), transparent 14%),
    linear-gradient(180deg, var(--panel), var(--panel-deep));
  border-left: 2px solid var(--border-soft);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  line-height: 1.4;
  align-self: stretch;
  overflow-y: auto;
  box-shadow: inset 1px 0 0 rgba(255,255,255,0.04);
}

.ui-header {
  padding: 8px 9px;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), transparent 38%),
    #101419;
}

.ui-title {
  margin: 0;
  font: 700 15px/1 var(--display-font);
  color: var(--accent-strong);
  letter-spacing: 2px;
  text-shadow: 0 1px 0 rgba(0,0,0,0.45);
}

.ui-sub {
  margin-top: 4px;
  color: #83755d;
  font-size: 9px;
  font-family: var(--mono-font);
  text-transform: uppercase;
  letter-spacing: 1.3px;
  line-height: 1;
}

/* ── Blocks ── */
.block {
  border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
  padding: 6px 7px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), transparent 38%),
    #101419;
}

.block-label {
  font-size: 9px;
  color: #83755d;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  margin-bottom: 3px;
  font-family: var(--mono-font);
}

.msg {
  color: var(--accent-strong);
  font-size: 10px;
  line-height: 1.4;
  min-height: 22px;
  font-style: italic;
}

/* ── Stats ── */
#stats {
  font-size: 10px;
  line-height: 1.5;
  font-family: var(--mono-font);
  color: var(--text);
}

/* ── Controls ── */
kbd {
  min-width: 36px;
  display: inline-block;
  padding: 2px 5px;
  border: 1px solid var(--border-soft);
  background: linear-gradient(180deg, #1b2127, #13181d);
  color: var(--accent);
  text-align: center;
  font: 700 9px/1 var(--mono-font);
  letter-spacing: 0.4px;
}

.controls-groups {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.controls-group {
  border: 1px solid rgba(91, 77, 51, 0.65);
  padding: 6px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), transparent 40%),
    rgba(11, 16, 21, 0.72);
}

.controls-title {
  color: var(--accent-strong);
  font: 700 9px/1 var(--mono-font);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.control-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 8px;
  align-items: center;
  font-size: 10px;
  color: #b5a88e;
}

.control-row + .control-row {
  margin-top: 4px;
}

.control-row kbd {
  min-width: 50px;
}

/* ── Start menu ── */
.start-menu {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding:
    max(18px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
  background:
    radial-gradient(circle at top, rgba(213, 177, 100, 0.15), transparent 34%),
    rgba(4, 6, 7, 0.84);
  width: var(--app-width, 100vw);
  height: var(--app-height, 100vh);
}

.start-menu.is-hidden {
  display: none;
}

.start-menu__panel {
  width: min(560px, 100%);
  max-height: calc(var(--app-height, 100vh) - 36px);
  overflow-y: auto;
  border: 1px solid var(--border-soft);
  box-shadow:
    0 22px 50px rgba(0, 0, 0, 0.5),
    inset 0 0 0 1px rgba(255,255,255,0.04);
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), transparent 14%),
    linear-gradient(180deg, rgba(10,13,16,0.98), rgba(12,16,21,0.96));
}

.start-menu__eyebrow {
  color: #83755d;
  font: 700 10px/1 var(--mono-font);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.start-menu__title {
  margin-top: 8px;
  color: var(--accent-strong);
  font: 700 30px/1 var(--display-font);
  letter-spacing: 3px;
  text-shadow: 0 2px 0 rgba(0,0,0,0.45);
}

.start-menu__lead {
  margin-top: 10px;
  color: #d8d3c6;
  font-size: 13px;
  line-height: 1.55;
}

.rotate-lock {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: none;
  align-items: center;
  justify-content: center;
  padding:
    max(18px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
  background: rgba(4, 6, 7, 0.92);
  backdrop-filter: blur(8px);
  width: var(--app-width, 100vw);
  height: var(--app-height, 100vh);
}

.rotate-lock[hidden] {
  display: none !important;
}

.rotate-lock.on {
  display: flex !important;
}

.rotate-card {
  width: min(520px, calc(var(--app-width, 100vw) - 28px));
  text-align: center;
}

.start-menu__controls {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.start-menu__controls .controls-group {
  padding: 10px;
}

.start-menu__controls .control-row {
  font-size: 11px;
}

.start-menu__controls .control-row kbd {
  min-width: 64px;
}

.start-menu__actions {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#startGameBtn {
  padding: 9px 10px;
  font-size: 12px;
  color: var(--accent-strong);
}

.start-menu__hint {
  text-align: center;
  color: #b5a88e;
  font-size: 11px;
  line-height: 1.4;
}

/* ── Buttons ── */
button {
  width: 100%;
  border: 1px solid #45403a;
  background: linear-gradient(180deg, #1b2127, #13181d);
  color: #d0c7b2;
  padding: 5px 6px;
  font-family: var(--mono-font);
  font-size: 10px;
  cursor: pointer;
  letter-spacing: 0.4px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
}
button:hover { background: linear-gradient(180deg, #252c33, #171d22); }

/* ── Mobile menu toggle ── */
.mobile-menu-toggle {
  position: fixed;
  top: max(8px, env(safe-area-inset-top));
  right: max(8px, env(safe-area-inset-right));
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-soft);
  background: linear-gradient(180deg, #1c2228, #15191f);
  color: var(--accent);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 43;
  padding: 0;
  font: 700 13px/1 var(--mono-font);
}

/* ── Touch controls ── */
.touch-controls {
  position: fixed;
  inset: 0;
  display: none;
  pointer-events: none;
  z-index: 30;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  width: var(--app-width, 100vw);
  height: var(--app-height, 100vh);
}

.touch-steer {
  position: absolute;
  left: max(0px, env(safe-area-inset-left));
  top: 0;
  bottom: 0;
  width: min(62%, calc(100% - max(20px, env(safe-area-inset-right))));
  pointer-events: auto;
  touch-action: none;
}

.steer-hint {
  position: absolute;
  width: 112px;
  height: 112px;
  transform: translate(-50%, -50%);
  opacity: 0.75;
  pointer-events: none;
}

.steer-ring {
  position: absolute;
  width: 92px;
  height: 92px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
}

.steer-dot {
  position: absolute;
  width: 34px;
  height: 34px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.26);
}

.touch-actions {
  position: absolute;
  right: max(0px, env(safe-area-inset-right));
  bottom: max(0px, env(safe-area-inset-bottom));
  width: 38%;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-end;
  padding-right: 20px;
  padding-bottom: 20px;
  gap: 14px;
  pointer-events: auto;
}

.touch-btn {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(22, 22, 22, 0.9);
  color: rgba(255, 255, 255, 0.9);
  font: 700 14px/1 var(--mono-font);
  padding: 0;
  touch-action: none;
  pointer-events: auto;
  -webkit-tap-highlight-color: transparent;
}

.touch-pause-wrap {
  display: flex;
  justify-content: flex-end;
}

.touch-pause-wrap .touch-btn {
  width: 78px;
  height: 44px;
  font-size: 13px;
}

.touch-main-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.touch-main-actions .touch-btn {
  height: 50px;
  min-width: 50px;
}

.touch-fire {
  color: #ff9c8b;
  background: rgba(160, 40, 40, 0.55);
  border-color: rgba(210, 70, 70, 0.45);
}
.touch-fire.is-active {
  background: rgba(240, 60, 60, 0.75);
}
.touch-pause { color: #d2d2d2; }

/* ── Mobile layout ── */
body.mobile {
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
  touch-action: none;
}

body.mobile .wrap {
  position: fixed;
  inset: 0;
  display: block;
  width: var(--app-width, 100vw);
  height: var(--app-height, 100vh);
  touch-action: none;
  background: none;
  box-shadow: none;
}

body.mobile canvas {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: auto !important;
  height: auto !important;
  z-index: 1;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.42);
}

body.mobile .touch-controls {
  display: none;
}

body.mobile-landscape .touch-controls {
  display: block;
}

body.mobile .mobile-menu-toggle {
  display: flex;
}

body.mobile-portrait .mobile-menu-toggle,
body.mobile-portrait .ui {
  display: none;
}

body.mobile .ui {
  position: fixed;
  right: 0;
  top: max(0px, env(safe-area-inset-top));
  bottom: max(0px, env(safe-area-inset-bottom));
  display: flex;
  width: min(250px, 78vw);
  z-index: 34;
  transform: translateX(105%);
  transition: transform 0.22s ease;
  padding-top: max(46px, calc(env(safe-area-inset-top) + 38px));
  padding-right: max(10px, env(safe-area-inset-right));
  padding-bottom: max(12px, env(safe-area-inset-bottom));
  border-left: 2px solid var(--border-soft);
  touch-action: pan-y;
  overscroll-behavior: contain;
}

body.mobile.menu-open .ui {
  transform: translateX(0);
}

/* ── Desktop responsive ── */
@media (max-width: 700px) {
  .mobile-menu-toggle { display: flex; }
  .ui { display: none; }
  .ui.is-open { display: flex; }
}

@media (max-width: 640px) {
  .start-menu__panel {
    max-height: calc(var(--app-height, 100vh) - 24px);
    overflow-y: auto;
    padding: 16px 14px;
  }

  .start-menu__title {
    font-size: 24px;
    letter-spacing: 2px;
  }

  .start-menu__controls {
    grid-template-columns: 1fr;
  }
}