/* =========================================================
   game.html — browser playground styles.

   Layout is intentionally thin: the renderer owns the canvas,
   CSS just wires up the HUD + menu overlays on top. Colours
   pull from the landing's token set so the game feels like
   part of kubora.net, not a separate app.
   ========================================================= */

:root {
  --g-bg:       #0a0b14;
  --g-panel:    rgba(16, 18, 30, 0.86);
  --g-panel-2:  rgba(24, 26, 42, 0.92);
  --g-stroke:   rgba(255, 255, 255, 0.08);
  --g-stroke-2: rgba(255, 255, 255, 0.14);
  --g-text:     #f2f4ff;
  --g-muted:    #a4a9c4;
  --g-dim:      #6a6f88;
  --g-accent:   #ff9b36;
  --g-accent-2: #ffb45c;
  --g-good:     #4dd27a;
  --g-bad:      #ff6b6b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--g-bg);
  color: var(--g-text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.game-body {
  position: relative;
}

#game-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  z-index: 0;
  /* Sky gradient shows through until the renderer paints. */
  background: radial-gradient(120% 80% at 50% 0%, #1a1c30 0%, #0a0b14 70%);
}

/* ── HUD ──────────────────────────────────────────────────── */

.game-hud {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

.hud-crosshair {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 10px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.35);
  mix-blend-mode: difference;
  opacity: 0.75;
}

.hud-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 16px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.hud-brand {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--g-text);
  text-decoration: none;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  border-radius: 4px;
  background: rgba(10, 11, 20, 0.55);
  border: 1px solid var(--g-stroke);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.hud-brand:hover {
  border-color: var(--g-stroke-2);
  background: rgba(16, 18, 30, 0.75);
}

.hud-stats {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--g-muted);
}
.hud-stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 4px;
  background: rgba(10, 11, 20, 0.55);
  border: 1px solid var(--g-stroke);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hud-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--g-dim);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}
.hud-dot.is-ok {
  background: var(--g-good);
  box-shadow: 0 0 8px var(--g-good);
}
.hud-dot.is-bad {
  background: var(--g-bad);
  box-shadow: 0 0 8px var(--g-bad);
}

.hud-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--g-muted);
  background: rgba(10, 11, 20, 0.55);
  padding: 8px 14px;
  border-radius: 4px;
  border: 1px solid var(--g-stroke);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0.9;
  transition: opacity 0.25s ease;
}
.hud-hint.is-hidden {
  opacity: 0;
}

/* ── Menu overlay ─────────────────────────────────────────── */

.game-menu {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(255, 154, 54, 0.08), transparent 70%),
    rgba(6, 7, 14, 0.82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity 0.18s ease;
}
.game-menu[aria-hidden="true"] {
  opacity: 0;
  pointer-events: none;
}

.menu-panel {
  width: min(560px, 100%);
  background: var(--g-panel);
  border: 1px solid var(--g-stroke-2);
  border-radius: 8px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  overflow: hidden;
  pointer-events: auto;
}

.menu-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px 12px;
}
.menu-title h1 {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.menu-title p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--g-muted);
  max-width: 380px;
}
.menu-close {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 500;
  color: var(--g-muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 3px;
  border: 1px solid var(--g-stroke);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.menu-close:hover {
  color: var(--g-text);
  border-color: var(--g-stroke-2);
  background: rgba(255, 255, 255, 0.04);
}

.menu-tabs {
  display: flex;
  gap: 2px;
  padding: 0 16px;
  margin-top: 8px;
  border-bottom: 1px solid var(--g-stroke);
}
.menu-tab {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  color: var(--g-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.menu-tab:hover { color: var(--g-text); }
.menu-tab.is-active {
  color: var(--g-text);
  border-bottom-color: var(--g-accent);
}

.menu-body {
  padding: 20px 24px 22px;
}
.menu-pane { display: none; }
.menu-pane.is-active { display: block; }

/* Play pane */
.menu-room {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--g-stroke);
  border-radius: 5px;
  margin-bottom: 16px;
}
.menu-room-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--g-dim);
}
.menu-room-name {
  margin-top: 4px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--g-accent);
}
.menu-room-hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--g-muted);
  line-height: 1.5;
}

.menu-cta {
  width: 100%;
  margin-top: 4px;
  justify-content: center;
}
.menu-sub {
  margin-top: 12px;
  font-size: 12px;
  color: var(--g-muted);
  text-align: center;
}
.menu-sub kbd {
  display: inline-block;
  padding: 1px 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--g-text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--g-stroke-2);
  border-bottom-width: 2px;
  border-radius: 3px;
}
.menu-sub a {
  color: var(--g-accent-2);
  text-decoration: none;
}
.menu-sub a:hover { text-decoration: underline; }

/* Avatar pane */
.field {
  display: block;
  margin-bottom: 16px;
}
.field-label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--g-muted);
  margin-bottom: 6px;
}
.field-input {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--g-text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--g-stroke-2);
  border-radius: 4px;
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.field-input:focus {
  border-color: var(--g-accent);
  background: rgba(255, 255, 255, 0.06);
}

.swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  padding: 0;
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}
.swatch:hover { transform: scale(1.08); }
.swatch.is-active {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--g-accent);
}

.avatar-preview {
  position: relative;
  margin-top: 4px;
  width: 100%;
  height: 180px;
  background:
    radial-gradient(60% 80% at 50% 30%, rgba(255, 154, 54, 0.15), transparent 70%),
    #0e1020;
  border: 1px solid var(--g-stroke);
  border-radius: 6px;
  overflow: hidden;
}
.avatar-preview canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}
.avatar-preview-label {
  position: absolute;
  top: 10px;
  left: 12px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--g-dim);
}

/* Help pane */
.help-grid {
  margin: 0 0 12px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 18px;
  align-items: center;
}
.help-grid dt {
  display: inline-flex;
  gap: 4px;
  flex-wrap: wrap;
  color: var(--g-text);
  font-size: 13px;
}
.help-grid dd {
  margin: 0;
  font-size: 13px;
  color: var(--g-muted);
}
.help-grid kbd {
  display: inline-block;
  min-width: 22px;
  padding: 2px 8px;
  text-align: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--g-text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--g-stroke-2);
  border-bottom-width: 2px;
  border-radius: 3px;
}

/* ── Banner (error toast) ─────────────────────────────────── */

.game-banner {
  position: fixed;
  left: 50%;
  top: 22px;
  transform: translateX(-50%);
  z-index: 40;
  padding: 10px 16px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: rgba(255, 107, 107, 0.18);
  border: 1px solid rgba(255, 107, 107, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  max-width: min(480px, calc(100% - 32px));
  text-align: center;
  animation: banner-in 0.22s ease-out;
}
.game-banner.is-info {
  background: rgba(77, 210, 122, 0.15);
  border-color: rgba(77, 210, 122, 0.4);
}
@keyframes banner-in {
  from { opacity: 0; transform: translate(-50%, -8px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ── Shared button (mirrors landing .btn-try) ─────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  color: #1a0d00;
  background: linear-gradient(135deg, var(--g-accent-2), var(--g-accent));
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 22px rgba(255, 154, 54, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(255, 154, 54, 0.32);
  filter: brightness(1.04);
}
.btn:active { transform: translateY(0); }
.btn-arrow {
  display: inline-block;
  transition: transform 0.15s ease;
}
.btn:hover .btn-arrow { transform: translateX(2px); }

/* ── Small screens ───────────────────────────────────────── */

@media (max-width: 640px) {
  .menu-panel { max-height: calc(100vh - 48px); overflow-y: auto; }
  .menu-head { padding: 18px 18px 8px; flex-direction: column; }
  .menu-tabs { padding: 0 10px; }
  .menu-body { padding: 16px 18px 18px; }
  .hud-top { padding: 10px 12px; }
  .hud-hint {
    font-size: 11px;
    padding: 6px 10px;
    bottom: 14px;
    max-width: calc(100% - 24px);
    text-align: center;
  }
}