/*
 * File Purpose: Shared HUD chrome for Hexsweeper lab skins (+ helpers for production).
 * Primary Classes: .skin-nav, .hud-actions, .hud-btn, .menu-stats, .menu-links, .fx-layer, overlays.
 * Inputs: CSS variables --nav-bg, --nav-ink, --bg-color, --text-main, --text-sub.
 * Outputs: Visual chrome only; no game logic.
 * Chrome: BR Reset · hex Menu; scores + outbound links live in Menu (no BL score rail).
 */
*, *::before, *::after { box-sizing: border-box; }

.skin-nav {
  position: fixed;
  top: max(12px, env(safe-area-inset-top, 0px));
  left: max(12px, env(safe-area-inset-left, 0px));
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  pointer-events: none;
}
.skin-nav a, .skin-nav button {
  pointer-events: auto;
  appearance: none;
  border: 0;
  background: color-mix(in srgb, var(--nav-bg, #e0e5ec) 50%, transparent);
  color: var(--nav-ink, #4a5568);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  padding: 8px 12px;
  text-decoration: none;
  cursor: pointer;
  line-height: 1;
  transition: opacity 0.15s ease, background 0.15s ease;
  box-shadow: none;
}
.skin-nav a:hover, .skin-nav button:hover { opacity: 0.92; }
.skin-nav a:active, .skin-nav button:active { transform: scale(0.96); }
.skin-nav .meta {
  pointer-events: none;
  opacity: 0.7;
  padding: 0 4px;
  max-width: min(42vw, 220px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.skin-nav .tag {
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.55;
}

/* Lab + production BR cluster: Reset · Menu */
.hud-actions {
  position: fixed;
  right: max(12px, env(safe-area-inset-right, 0px));
  bottom: max(14px, env(safe-area-inset-bottom, 0px));
  z-index: 40;
  display: flex;
  flex-direction: row;
  gap: 6px;
  align-items: center;
  pointer-events: none;
  padding: 4px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--nav-bg, #e0e5ec) 52%, transparent);
  backdrop-filter: blur(16px) saturate(1.1);
  -webkit-backdrop-filter: blur(16px) saturate(1.1);
  border: 1px solid color-mix(in srgb, var(--text-main, #4a5568) 12%, transparent);
}
.hud-actions > * { pointer-events: auto; }
.hud-btn {
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  color: var(--text-main, #4a5568);
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  opacity: 0.88;
}
.hud-btn svg { width: 20px; height: 20px; stroke-width: 2; }
.hud-btn:hover { opacity: 1; background: color-mix(in srgb, var(--nav-bg, #e0e5ec) 72%, transparent); }
.hud-btn:active { transform: scale(0.94); }
.hud-btn:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--text-main, #4a5568) 55%, transparent);
  outline-offset: 2px;
}
.menu-title {
  margin: 0 0 12px;
  font: 700 1.05rem/1.2 "IBM Plex Sans", system-ui, sans-serif;
  letter-spacing: -0.02em;
  color: var(--text-main, #4a5568);
  text-align: left;
}
.menu-stats {
  display: flex;
  gap: 18px;
  width: 100%;
  padding: 2px 0;
}
.menu-stats .stat-item {
  opacity: 0.95;
  min-width: 0;
  align-items: flex-start;
  text-align: left;
  font-size: 1.1rem;
}
.modal-section-label {
  width: 100%;
  margin: 0 0 6px;
  font: 700 0.68rem/1 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-sub, #a0aec0);
  text-align: left;
}
#run-row {
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}
.canvas-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  position: relative;
  z-index: 1;
}
canvas { display: block; cursor: crosshair; max-width: 100%; }

/* Legacy lab score rail — unused after Menu chrome; kept inert if referenced. */
.bottom-bar,
.score-rail { display: none !important; }
.stat-item {
  font-family: "IBM Plex Mono", "Segoe UI Mono", "Roboto Mono", monospace;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main, #2f3a4a);
  min-width: 52px;
  width: auto;
  padding: 0 6px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: auto;
  /* Endless scores can climb past 999 */
  font-variant-numeric: tabular-nums;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.1;
}
.stat-item::after {
  content: attr(data-label);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-sub, #5c6b7e);
  margin-top: 2px;
}
.stat-item.visible { opacity: 1; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--bg-color, #e0e5ec) 90%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  backdrop-filter: blur(8px);
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal-content {
  background: color-mix(in srgb, var(--bg-color, #e0e5ec) 92%, transparent);
  color: var(--text-main, #4a5568);
  padding: 30px;
  border-radius: 28px;
  width: 280px;
  text-align: center;
  border: 0;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform: scale(0.95);
  transition: transform 0.2s ease;
  position: relative;
}
.modal-overlay.open .modal-content { transform: scale(1); }
.close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  color: var(--text-sub, #a0aec0);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
}
.close-btn:hover { color: var(--text-main, #4a5568); }
.close-btn:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--text-main, #4a5568) 55%, transparent);
  outline-offset: 2px;
}
.modal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 25px;
  padding: 0 10px;
}
.icon-label {
  color: var(--text-main, #4a5568);
  display: flex;
  align-items: center;
  justify-content: center;
}
.diff-selector { display: flex; gap: 5px; }
.diff-option {
  appearance: none;
  -webkit-appearance: none;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid var(--text-sub, #a0aec0);
  border-radius: 8px;
  color: var(--text-sub, #a0aec0);
  background: transparent;
  transition: all 0.2s;
  font-size: 12px;
  font-weight: 700;
  font-family: inherit;
  padding: 0;
  line-height: 1;
}
.diff-option:hover {
  border-color: var(--text-main, #4a5568);
  color: var(--text-main, #4a5568);
}
.diff-option.active,
.diff-option[aria-pressed="true"] {
  background: var(--text-main, #4a5568);
  border-color: var(--text-main, #4a5568);
  color: var(--bg-color, #e0e5ec);
}
.diff-option:focus-visible {
  outline: 2px solid var(--text-main, #4a5568);
  outline-offset: 2px;
}
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: transparent;
  border: 2px solid var(--text-sub, #a0aec0);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
}
.toggle-switch.active {
  background: var(--text-main, #4a5568);
  border-color: var(--text-main, #4a5568);
}
.toggle-knob {
  position: absolute;
  top: 3px; left: 3px;
  width: 14px; height: 14px;
  background: var(--text-sub, #a0aec0);
  border-radius: 50%;
  transition: transform 0.2s;
}
.toggle-switch.active .toggle-knob {
  background: var(--bg-color, #e0e5ec);
  transform: translateX(20px);
}
.refresh-btn {
  width: 60px;
  height: 60px;
  margin: 10px auto 0 auto;
  border: none;
  border-radius: 50%;
  background: var(--text-main, #4a5568);
  color: var(--bg-color, #e0e5ec);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, opacity 0.2s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.refresh-btn:active { transform: scale(0.9); opacity: 0.9; }
.instructions-text {
  margin-top: 25px;
  font-size: 11px;
  color: var(--text-sub, #a0aec0);
  line-height: 1.5;
  text-align: center;
}
.menu-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid color-mix(in srgb, var(--text-main, #4a5568) 12%, transparent);
  font: 600 0.78rem/1.3 "IBM Plex Sans", system-ui, sans-serif;
}
.menu-links a {
  color: var(--text-sub, #a0aec0);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  border-radius: 4px;
}
.menu-links a:hover { color: var(--text-main, #4a5568); }
.menu-links a:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--text-main, #4a5568) 55%, transparent);
  outline-offset: 3px;
}
.menu-links-sep {
  color: color-mix(in srgb, var(--text-sub, #a0aec0) 70%, transparent);
  user-select: none;
}
/* Media query = OS Reduce Motion; attribute = the in-app Effects setting
   (see Hexsweeper.applyEffectsAttribute). Kept separate so the setting can
   reduce with the OS switch off, and keep effects with it on. */
@media (prefers-reduced-motion: reduce) {
  .modal-overlay,
  .modal-content,
  .hud-btn { transition: none; }
  .modal-overlay.open .modal-content { transform: none; }
}
:root[data-effects="reduced"] .modal-overlay,
:root[data-effects="reduced"] .modal-content,
:root[data-effects="reduced"] .hud-btn { transition: none; }
:root[data-effects="reduced"] .modal-overlay.open .modal-content { transform: none; }
:root[data-effects="full"] .modal-overlay,
:root[data-effects="full"] .modal-content,
:root[data-effects="full"] .hud-btn { transition: revert; }

.fx-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}