:root {
  color-scheme: dark;
  --accent-1: #ffcf4d;
  --accent-2: #ff7a59;
  --accent-3: #52e0c4;
  --ink: #0b0e1a;
  --panel-bg: rgba(12, 16, 32, 0.72);
  --panel-border: rgba(255, 255, 255, 0.12);
  --text: #f4f6ff;
  --text-dim: #b9c0d9;
  --p1: #52e0c4;
  --p2: #ff7a59;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--ink);
  overflow: hidden;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

#app {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#game-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* ---------- Overlays / panels ---------- */

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  transition: opacity 0.25s ease;
}

.overlay.hidden {
  display: none;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  padding: clamp(16px, 3vh, 36px) clamp(20px, 4vw, 48px);
  text-align: center;
  color: var(--text);
  max-width: min(92vw, 560px);
  max-height: 92vh;
  overflow-y: auto;
}

.title {
  font-size: clamp(2rem, 6vw, 3.4rem);
  margin: 0 0 4px;
  letter-spacing: 2px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 4px 24px rgba(255, 127, 80, 0.25);
}

.title-dot { color: var(--accent-3); -webkit-text-fill-color: var(--accent-3); }

.subtitle {
  margin: 0 0 clamp(16px, 3vh, 28px);
  color: var(--text-dim);
  font-size: clamp(0.75rem, 1.6vw, 0.95rem);
}

.mode-select {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.btn {
  font-family: inherit;
  font-weight: 700;
  letter-spacing: 0.5px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  color: var(--ink);
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  padding: 12px 22px;
  font-size: clamp(0.85rem, 1.8vw, 1rem);
  box-shadow: 0 6px 18px rgba(255, 122, 89, 0.28);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.96); filter: brightness(0.95); }
.btn:hover { filter: brightness(1.06); }

.btn-mode {
  min-width: 130px;
}
.btn-mode.selected {
  outline: 2px solid var(--accent-3);
  outline-offset: 2px;
}

.player-setup { margin-top: 4px; }

.name-field {
  --field-accent: var(--accent-3);
  margin-bottom: 16px;
  text-align: left;
}
#name-p2-field { --field-accent: var(--p2); }

.name-field label {
  display: block;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
}
.name-field input[type="text"] {
  width: 100%;
  font-family: inherit;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  background: linear-gradient(135deg, rgba(255,255,255,0.09), rgba(255,255,255,0.03));
  border: 2px solid var(--panel-border);
  border-left: 4px solid var(--field-accent);
  border-radius: 12px;
  padding: 14px 16px;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.name-field input[type="text"]::placeholder {
  color: rgba(244, 246, 255, 0.32);
  font-weight: 600;
}
.name-field input[type="text"]:focus {
  border-color: var(--field-accent);
  border-left-color: var(--field-accent);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--field-accent) 22%, transparent);
}

.difficulty-select { margin-top: 6px; }
.difficulty-label {
  display: block;
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.difficulty-buttons {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 14px;
}
.btn-diff {
  background: rgba(255,255,255,0.08);
  color: var(--text);
  box-shadow: none;
  padding: 8px 16px;
}
.btn-diff.active {
  background: linear-gradient(135deg, var(--accent-3), #2fb8a0);
  color: var(--ink);
}

.btn-start { background: linear-gradient(135deg, var(--accent-3), #2fb8a0); }

.btn-mute {
  margin-top: 18px;
  background: rgba(255,255,255,0.08);
  color: var(--text-dim);
  box-shadow: none;
  font-size: 0.8rem;
  padding: 8px 16px;
}

.hidden { display: none !important; }

.credit-badge {
  position: fixed;
  top: max(8px, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  pointer-events: auto;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 4px 12px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.3);
  white-space: nowrap;
}
.credit-badge strong {
  color: var(--accent-3);
  font-weight: 800;
}
.credit-badge:hover {
  color: var(--text);
}

@media (max-height: 420px) {
  .credit-badge { font-size: 0.58rem; padding: 3px 9px; }
}

/* ---------- HUD ---------- */

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

.hud-top {
  position: absolute;
  top: max(8px, env(safe-area-inset-top));
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0 10px;
  pointer-events: none;
}

.player-banner {
  pointer-events: auto;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(10px);
  color: var(--text);
  padding: 8px 20px;
  border-radius: 999px;
  font-weight: 800;
  font-size: clamp(1rem, 2.6vw, 1.4rem);
  letter-spacing: 0.3px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.35);
  transition: color 0.2s ease;
}

.btn-icon {
  pointer-events: auto;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text);
  box-shadow: none;
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 50%;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Angle/Speed/Fire cluster: docks to whichever side the active player's
   gorilla is on, and slides across when the turn switches. */
.hud-controls {
  position: absolute;
  top: calc(max(8px, env(safe-area-inset-top)) + 60px);
  left: max(10px, env(safe-area-inset-left));
  transform: translateX(0);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  pointer-events: auto;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(10px);
  border-radius: 18px;
  padding: 12px 14px 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.35);
  transition: left 0.45s cubic-bezier(.4,0,.2,1), transform 0.45s cubic-bezier(.4,0,.2,1);
}
.hud-controls.dock-right {
  left: calc(100% - max(10px, env(safe-area-inset-right)));
  transform: translateX(-100%);
}

.control-row {
  display: flex;
  gap: 10px;
}

.control-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.control-label {
  color: var(--text-dim);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
}

.value-input {
  -moz-appearance: textfield;
  appearance: textfield;
  width: 84px;
  height: 52px;
  border-radius: 12px;
  border: 2px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-family: inherit;
  font-size: 1.3rem;
  font-weight: 800;
  text-align: center;
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.value-input::placeholder { color: rgba(244, 246, 255, 0.3); }
.value-input:focus {
  border-color: var(--accent-3);
  background: rgba(255, 255, 255, 0.1);
}
.value-input:disabled {
  opacity: 0.5;
}
.value-input::-webkit-outer-spin-button,
.value-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.value-input.field-error {
  animation: field-shake 0.4s ease;
  border-color: var(--accent-2);
}
@keyframes field-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}

.btn-fire {
  pointer-events: auto;
  padding: 14px 0;
  font-size: 1.1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-2), #c8442f);
  box-shadow: 0 10px 26px rgba(255, 90, 60, 0.4);
}
.btn-fire:disabled {
  filter: grayscale(0.6) brightness(0.7);
  cursor: default;
  pointer-events: none;
}

.win-panel h2 {
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  margin: 0 0 22px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.win-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.rotate-icon {
  font-size: 3rem;
  animation: spin 1.6s linear infinite;
  margin-bottom: 12px;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
#rotate-hint {
  z-index: 40;
  background: rgba(6, 8, 16, 0.94);
  flex-direction: column;
  color: var(--text);
  text-align: center;
}
#rotate-hint p { max-width: 260px; color: var(--text-dim); }

/* Small-height landscape (phones): tighten HUD */
@media (max-height: 420px) {
  .hud-controls { top: calc(max(6px, env(safe-area-inset-top)) + 46px); padding: 8px 8px 10px; gap: 6px; }
  .value-input { height: 40px; font-size: 1.1rem; width: 72px; }
  .btn-fire { padding: 10px 0; font-size: 1rem; }
}

/* Only show rotate hint on narrow portrait viewports */
@media (orientation: landscape) {
  #rotate-hint { display: none !important; }
}