:root {
  --bg-dark: #121318;
  --panel-bg: #1c1e26;
  --border-col: #343846;
  --text-main: #f0f2f5;
  --text-muted: #9aa0b0;
  --accent-orange: #ff6b2b;
  --accent-yellow: #ffd13b;
  --accent-cyan: #38e2ff;
  --accent-pink: #ff2a85;
  --danger-red: #ff3b5c;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  overscroll-behavior: none;
  touch-action: manipulation;
}

body {
  background-color: var(--bg-dark);
  background-image:
    radial-gradient(circle at 50% 15%, rgba(56, 226, 255, 0.08), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(255, 107, 43, 0.07), transparent 45%);
  color: var(--text-main);
  font-family: 'Courier New', Courier, monospace;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px;
}

.app-shell {
  width: 100%;
  max-width: 984px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel-bg);
  border: 2px solid var(--border-col);
  border-radius: 8px;
  padding: 6px 10px;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.4);
  flex-wrap: wrap;
  gap: 6px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 7px;
}

.status-dot {
  width: 9px;
  height: 9px;
  background: var(--danger-red);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--danger-red);
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.brand-title {
  font-weight: 800;
  font-size: 0.86rem;
  letter-spacing: 0.8px;
  color: var(--text-main);
}

.controls-bar {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.ui-btn {
  background: #262936;
  color: var(--text-main);
  border: 2px solid var(--border-col);
  border-radius: 6px;
  padding: 5px 9px;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.08s ease, border-color 0.15s ease, background 0.15s ease;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.5);
  touch-action: manipulation;
}

.ui-btn.menu-open-btn {
  border-color: var(--accent-cyan);
  background: #1f2b3d;
}

.ui-btn:hover {
  border-color: var(--accent-cyan);
  background: #2f3344;
}

.ui-btn:active {
  transform: translateY(2px);
  box-shadow: none;
}

.game-wrapper {
  position: relative;
  width: 100%;
  background: #171920;
  border: 3px solid var(--border-col);
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    0 12px 32px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05);
}

#game-canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  cursor: pointer;
  touch-action: none;
  background: #f7f7f7;
}

/* --- Start Menu & Skin Selector Overlay --- */
.start-menu-overlay {
  position: absolute;
  inset: 0;
  background: rgba(14, 16, 24, 0.92);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: safe center;
  justify-content: center;
  padding: 10px;
  z-index: 20;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

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

.menu-card {
  background: #191c26;
  border: 3px solid #3c4257;
  border-radius: 12px;
  padding: 10px 12px;
  max-width: 850px;
  width: 100%;
  margin: auto;
  text-align: center;
  box-shadow: 0 10px 0 rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
}

.menu-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 8px;
}

.menu-badge {
  background: #272b3a;
  color: var(--accent-cyan);
  border: 1px solid #3d455e;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 9px;
  border-radius: 4px;
  letter-spacing: 0.8px;
}

.golden-btn {
  border-color: #d49b00;
  color: var(--accent-yellow);
  background: linear-gradient(180deg, #3a2e10, #241c08);
}

.bank-badge {
  background: #2b2412;
  color: var(--accent-yellow);
  border: 2px solid #b58500;
  font-size: 0.84rem;
  font-weight: 900;
  padding: 4px 12px;
  border-radius: 6px;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.4);
}

.menu-hero-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 10px;
  background: #141720;
  border: 2px solid #2d3346;
  border-radius: 9px;
  padding: 7px 12px;
  flex-wrap: wrap;
}

.menu-hero-text {
  text-align: left;
}

.menu-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--accent-yellow);
  text-shadow: 0 2px 0 #7a5200;
  letter-spacing: 1px;
}

.menu-subtitle {
  font-size: 0.74rem;
  color: var(--text-muted);
}

.menu-subtitle strong {
  color: var(--accent-cyan);
}

.start-play-btn {
  background: linear-gradient(180deg, #ff7b3d, #e04f16);
  color: #ffffff;
  border: 2px solid #ffa57a;
  border-radius: 8px;
  padding: 10px 22px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 900;
  letter-spacing: 0.8px;
  cursor: pointer;
  box-shadow: 0 4px 0 #8c2905;
  transition: transform 0.1s ease, filter 0.15s ease;
  touch-action: manipulation;
  white-space: nowrap;
}

.start-play-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.start-play-btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #8c2905;
}

.skin-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  width: 100%;
}

.skin-option {
  position: relative;
  background: #232736;
  border: 2px solid #3b4158;
  border-radius: 8px;
  padding: 5px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-main);
  transition: transform 0.1s ease, border-color 0.15s ease, background 0.15s ease;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.4);
  touch-action: manipulation;
}

.skin-option:hover {
  border-color: var(--accent-cyan);
  background: #2a2f42;
}

.skin-option.active {
  border-color: var(--accent-yellow);
  background: linear-gradient(180deg, rgba(255, 209, 59, 0.16), rgba(56, 226, 255, 0.08));
  box-shadow:
    0 0 12px rgba(255, 209, 59, 0.25),
    0 3px 0 #9e7300;
}

.skin-key-hint {
  position: absolute;
  top: 4px;
  left: 5px;
  background: #161822;
  color: var(--accent-yellow);
  border: 1px solid #484e63;
  border-radius: 4px;
  font-size: 0.62rem;
  font-weight: 800;
  padding: 1px 4px;
}

.skin-preview {
  width: 48px;
  height: 48px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  flex-shrink: 0;
}

.skin-text-wrap {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.skin-name {
  font-size: 0.8rem;
  font-weight: 800;
  color: #ffffff;
}

.skin-option.active .skin-name {
  color: var(--accent-yellow);
}

.skin-desc {
  font-size: 0.64rem;
  color: var(--text-muted);
  line-height: 1.15;
}

.golden-buy-btn {
  margin-top: 2px;
  width: 100%;
  background: #1b1f2c;
  color: var(--text-muted);
  border: 2px solid #454c63;
  border-radius: 5px;
  padding: 3px 5px;
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  touch-action: manipulation;
}

.golden-buy-btn.can-afford {
  background: linear-gradient(180deg, #423005, #261b02);
  color: var(--accent-yellow);
  border-color: #d99b00;
}

.golden-buy-btn.owned {
  background: #1f293d;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.golden-buy-btn.equipped {
  background: linear-gradient(180deg, #ffd13b, #e09f00);
  color: #121318;
  border-color: #fff3b0;
}

/* --- Compact Upgrades Shop inside Start Menu --- */
.shop-section {
  width: 100%;
  background: #141720;
  border: 2px solid #2f3548;
  border-radius: 8px;
  padding: 6px 8px;
}

.shop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.shop-item {
  background: #222634;
  border: 2px solid #3c4259;
  border-radius: 6px;
  padding: 5px 7px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-main);
  text-align: left;
  touch-action: manipulation;
}

.shop-item:hover:not(:disabled) {
  border-color: var(--accent-yellow);
  background: #2a3042;
}

.shop-item:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.shop-icon {
  font-size: 1.05rem;
}

.shop-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.shop-name {
  font-size: 0.72rem;
  font-weight: 800;
  color: #ffffff;
}

.shop-name small {
  color: var(--accent-cyan);
  font-size: 0.65rem;
}

.shop-effect {
  font-size: 0.6rem;
  color: var(--text-muted);
}

.shop-cost {
  background: #2b2412;
  color: var(--accent-yellow);
  border: 1px solid #9e7300;
  border-radius: 4px;
  padding: 2px 5px;
  font-size: 0.66rem;
  font-weight: 900;
  white-space: nowrap;
}

.menu-credits {
  font-size: 0.66rem;
  color: var(--text-muted);
}

.menu-credits strong {
  color: var(--accent-yellow);
}

.instructions-panel {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 8px 14px;
  background: var(--panel-bg);
  border: 2px solid var(--border-col);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.copyright-line {
  width: 100%;
  text-align: center;
  padding-top: 5px;
  border-top: 1px solid #2b3040;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.copyright-line strong {
  color: var(--accent-yellow);
}

.key-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.key-group span {
  margin-left: 5px;
  color: var(--text-main);
  font-weight: 600;
}

kbd {
  display: inline-block;
  padding: 2px 6px;
  font-family: inherit;
  font-size: 0.73rem;
  font-weight: 800;
  color: var(--accent-yellow);
  background: #262936;
  border: 1px solid #484e63;
  border-bottom-width: 3px;
  border-radius: 4px;
}

/* --- Simplified Mobile Touch Controls --- */
.touch-controls {
  display: none;
  justify-content: space-between;
  align-items: stretch;
  gap: 10px;
  padding: 10px 12px;
  background: #151720;
  border-top: 2px solid var(--border-col);
  touch-action: none;
}

.dpad {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.action-buttons {
  display: flex;
  align-items: stretch;
  gap: 8px;
  flex: 1;
  justify-content: flex-end;
}

.touch-btn {
  background: #262b3a;
  color: #ffffff;
  border: 2px solid #4b5269;
  border-bottom-width: 4px;
  border-radius: 10px;
  font-family: inherit;
  font-weight: 900;
  padding: 14px 18px;
  font-size: 1rem;
  touch-action: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.05s ease, filter 0.05s ease;
}

.touch-btn.dir-btn {
  min-width: 62px;
  min-height: 56px;
  font-size: 1.3rem;
}

.touch-btn.ability-btn {
  background: linear-gradient(180deg, #8b38d6, #651ea3);
  border-color: #c77dff;
  padding: 14px 16px;
  font-size: 0.92rem;
  min-width: 106px;
}

.touch-btn.ability-btn.ready {
  background: linear-gradient(180deg, #ffd13b, #d98200);
  color: #121318;
  border-color: #fff3b0;
  box-shadow: 0 0 12px rgba(255, 209, 59, 0.5);
}

.touch-btn.jet-btn {
  background: linear-gradient(180deg, #ff6b2b, #c93d08);
  border-color: #ffa375;
  padding: 16px 20px;
  font-size: 1rem;
  flex: 1;
  max-width: 195px;
}

.touch-btn:active,
.touch-btn.pressed {
  transform: translateY(2px) scale(0.96);
  filter: brightness(1.25);
  border-bottom-width: 2px;
}

@media (hover: none) and (pointer: coarse), (max-width: 860px) {
  .touch-controls {
    display: flex;
  }
  .instructions-panel {
    display: none;
  }
}

/* Mobile Portrait */
@media (max-width: 680px) {
  body {
    padding: 4px;
    justify-content: flex-start;
  }
  .app-shell {
    gap: 5px;
  }
  .top-bar {
    padding: 5px 8px;
  }
  .brand-title {
    font-size: 0.72rem;
  }
  .ui-btn {
    padding: 4px 7px;
    font-size: 0.7rem;
  }
  .start-menu-overlay {
    position: fixed;
    inset: 0;
    padding: 8px;
    align-items: flex-start;
  }
  .menu-card {
    padding: 10px;
    gap: 6px;
  }
  .menu-hero-row {
    padding: 8px 10px;
  }
  .start-play-btn {
    width: 100%;
    padding: 11px 16px;
    font-size: 1rem;
  }
  .skin-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
  .skin-preview {
    width: 42px;
    height: 42px;
  }
  .skin-name {
    font-size: 0.75rem;
  }
  .skin-desc {
    font-size: 0.6rem;
  }
  .shop-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
  }
  .shop-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 5px 4px;
    gap: 2px;
  }
  .shop-effect {
    display: none;
  }
  .touch-controls {
    padding: 8px 8px;
    gap: 8px;
  }
  .touch-btn.dir-btn {
    min-width: 54px;
    min-height: 52px;
  }
  .touch-btn.ability-btn {
    min-width: 92px;
    padding: 12px 10px;
    font-size: 0.82rem;
  }
  .touch-btn.jet-btn {
    padding: 12px 12px;
    font-size: 0.88rem;
  }
}

/* Mobile Landscape */
@media (max-height: 520px) and (orientation: landscape) {
  body {
    padding: 3px;
  }
  .app-shell {
    gap: 3px;
  }
  .top-bar {
    padding: 3px 8px;
  }
  .start-menu-overlay {
    position: fixed;
    inset: 0;
    align-items: flex-start;
    padding: 6px;
  }
  .touch-controls {
    padding: 5px 10px;
  }
  .touch-btn.dir-btn {
    min-width: 50px;
    min-height: 42px;
    padding: 6px 10px;
  }
  .touch-btn.ability-btn,
  .touch-btn.jet-btn {
    padding: 8px 14px;
    font-size: 0.85rem;
  }
  .gameover-overlay {
    position: fixed;
    inset: 0;
  }
}

/* --- Game Over Modal Overlay --- */
.gameover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(14, 16, 24, 0.88);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 25;
}

.gameover-overlay.hidden {
  display: none;
}

.gameover-card {
  background: #191c26;
  border: 3px solid #3c4257;
  border-radius: 14px;
  padding: 18px 20px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: 0 12px 0 rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.gameover-record-badge {
  background: linear-gradient(180deg, #3a2e10, #241c08);
  color: var(--accent-yellow);
  border: 2px solid #ffd13b;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.8px;
  animation: pulseRecord 0.9s infinite alternate;
}

.gameover-record-badge.hidden {
  display: none;
}

@keyframes pulseRecord {
  from { transform: scale(1); box-shadow: 0 0 0 rgba(255, 209, 59, 0); }
  to { transform: scale(1.04); box-shadow: 0 0 14px rgba(255, 209, 59, 0.45); }
}

.gameover-title {
  font-size: 1.65rem;
  font-weight: 900;
  color: #ff3b5c;
  text-shadow: 0 3px 0 #5a0f1d;
  letter-spacing: 1.5px;
  margin: 0;
}

.gameover-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  width: 100%;
}

.go-stat-box {
  background: #131620;
  border: 2px solid #2c3246;
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.go-stat-label {
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 0.6px;
}

.go-stat-value {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--text-main);
}

.go-stat-value.highlight-gold {
  color: var(--accent-yellow);
}

.go-stat-value.highlight-green {
  color: #2ecc71;
}

.gameover-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.go-btn {
  width: 100%;
  padding: 13px 18px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.8px;
  border-radius: 9px;
  cursor: pointer;
  transition: transform 0.08s ease, filter 0.12s ease;
  touch-action: manipulation;
}

.go-btn-play {
  background: linear-gradient(180deg, #ff7b3d, #e04f16);
  color: #ffffff;
  border: 2px solid #ffa57a;
  box-shadow: 0 4px 0 #8f2c06;
}

.go-btn-home {
  background: linear-gradient(180deg, #263850, #1a2638);
  color: var(--accent-cyan);
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 4px 0 #0d1520;
}

.go-btn:hover {
  filter: brightness(1.1);
}

.go-btn:active {
  transform: translateY(3px);
  box-shadow: none;
}

@media (max-width: 600px) {
  .gameover-card {
    padding: 14px;
    gap: 10px;
  }
  .gameover-title {
    font-size: 1.35rem;
  }
  .go-stat-value {
    font-size: 1rem;
  }
  .go-btn {
    padding: 12px 14px;
    font-size: 0.92rem;
  }
}