/* Mobile-first responsive HUD for Pelbay Courier (320px–430px priority, scales to desktop) */
*,
*::before,
*::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

:root {
  --glass-bg: rgba(15, 23, 42, 0.62);
  --glass-border: rgba(248, 250, 252, 0.18);
  --glass-highlight: rgba(248, 250, 252, 0.28);
  --text-main: #f8fafc;
  --text-muted: #cbd5e1;
  --accent-amber: #fbbf24;
  --accent-teal: #2dd4bf;
  --accent-coral: #fb7185;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0f172a;
  color: var(--text-main);
  font-family: var(--font-sans);
  touch-action: none;
}

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  touch-action: none;
}

#stage canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#stage canvas:active {
  cursor: grabbing;
}

/* HUD Overlay Layer */
.hud-layer {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right))
    max(10px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  max-width: 100vw;
  overflow: hidden;
}

/* Top Telemetry & Mode Bar */
.hud-top {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
}

.telemetry-bar {
  pointer-events: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 6px 8px;
  box-shadow: 0 8px 24px rgba(2, 6, 23, 0.28);
}

.stat-item {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  min-width: 0;
  white-space: nowrap;
}

.stat-label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-amber);
}

.stat-unit {
  font-size: 10px;
  color: var(--text-muted);
}

/* Quick-Switch Mode Pills */
.mode-pills {
  pointer-events: auto;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
}

.pill-btn {
  appearance: none;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text-main);
  border-radius: 10px;
  padding: 5px 4px;
  font-family: inherit;
  font-size: 11px;
  line-height: 1.15;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
  min-width: 0;
}

.pill-btn:hover {
  background: rgba(30, 41, 59, 0.78);
  border-color: var(--glass-highlight);
}

.pill-btn:active {
  transform: scale(0.95);
}

.pill-title {
  font-size: 10px;
  color: var(--text-muted);
}

.pill-val {
  font-weight: 600;
  font-size: 11px;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* Floating Toast Feedback */
.hud-toast {
  align-self: center;
  background: rgba(15, 23, 42, 0.82);
  border: 1px solid rgba(251, 191, 36, 0.45);
  color: #fef08a;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
  white-space: nowrap;
  max-width: 94vw;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hud-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Bottom Ergonomic Touch Control Deck (320px-430px optimized) */
.hud-bottom {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-deck {
  pointer-events: auto;
  display: grid;
  grid-template-columns: 1.08fr 1.42fr;
  gap: 6px;
  align-items: stretch;
}

/* Left Thumb Steering Pad */
.steer-pad {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 4px;
  touch-action: none;
}

.ctrl-btn {
  appearance: none;
  border: 1px solid rgba(248, 250, 252, 0.12);
  background: rgba(30, 41, 59, 0.65);
  color: var(--text-main);
  border-radius: 12px;
  padding: 8px 4px;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.12s ease, border-color 0.12s ease;
  min-width: 0;
  touch-action: none;
}

.ctrl-btn:hover {
  background: rgba(51, 65, 85, 0.8);
  border-color: var(--glass-highlight);
}

.ctrl-btn:active,
.ctrl-btn.is-active {
  transform: scale(0.94);
  background: rgba(45, 212, 191, 0.28);
  border-color: var(--accent-teal);
}

.ctrl-btn.btn-primary {
  background: rgba(245, 158, 11, 0.24);
  border-color: rgba(251, 191, 36, 0.42);
}

.ctrl-btn.btn-primary:active,
.ctrl-btn.btn-primary.is-active {
  background: rgba(245, 158, 11, 0.48);
  border-color: var(--accent-amber);
}

.ctrl-icon {
  font-size: 14px;
  line-height: 1;
  font-weight: 700;
}

.ctrl-text {
  font-size: 11px;
  font-weight: 600;
  line-height: 1.1;
  white-space: nowrap;
}

.kbd-hint {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
  background: rgba(15, 23, 42, 0.55);
  padding: 1px 4px;
  border-radius: 4px;
  line-height: 1.1;
}

/* Right Action Cluster */
.action-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 4px;
}

/* Ultra-narrow 320px fine-tuning so nothing overflows */
@media (max-width: 359px) {
  .telemetry-bar {
    padding: 5px 6px;
  }
  .stat-value {
    font-size: 12px;
  }
  .ctrl-btn {
    padding: 6px 2px;
  }
  .ctrl-text {
    font-size: 10px;
  }
  .kbd-hint {
    display: none;
  }
}

/* Keyboard Shortcuts Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  pointer-events: auto;
}

.modal-backdrop[hidden] {
  display: none !important;
}

.modal-card {
  width: 100%;
  max-width: 380px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--glass-highlight);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  color: var(--text-main);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.modal-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0;
}

.modal-close {
  appearance: none;
  border: 1px solid var(--glass-border);
  background: rgba(30, 41, 59, 0.8);
  color: var(--text-main);
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
}

.shortcut-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
}

.shortcut-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 8px;
  background: rgba(30, 41, 59, 0.55);
  border-radius: 8px;
}

.shortcut-keys {
  display: flex;
  gap: 4px;
  font-family: var(--font-mono);
}

.shortcut-keys kbd {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(248, 250, 252, 0.24);
  border-radius: 5px;
  padding: 2px 6px;
  font-size: 11px;
  color: var(--accent-amber);
}

@media (prefers-reduced-motion: reduce) {
  .pill-btn,
  .ctrl-btn,
  .hud-toast {
    transition: none;
  }
}