/* ========================================
   Fire 'n Ice - Modern Retro Theme
   ======================================== */

* {
  box-sizing: border-box;
}

:root {
  --color-bg: #0d0d1a;
  --color-surface: #1a1a2e;
  --color-surface-light: #252542;
  --color-primary: #00d4ff;
  --color-secondary: #ff6b9d;
  --color-accent: #ffe17f;
  --color-text: #e4e4e4;
  --color-text-muted: #8888aa;
  --color-ice: #00bfff;
  --color-fire: #ff6600;
  --font-pixel: 'Press Start 2P', monospace, system-ui;
  --font-ui: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse at top, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at bottom, rgba(255, 107, 157, 0.1) 0%, transparent 50%);
  font-family: var(--font-ui);
  color: var(--color-text);
  overflow-x: hidden;
}

/* Desktop: Sticky footer layout with centered content */
@media (min-width: 601px) {
  body.game-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }

  body.game-body>.game-header {
    flex-shrink: 0;
  }

  body.game-body>.game-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 20px;
    padding-bottom: 20px;
    min-width: 100%;
  }

  body.game-body>.info-section {
    flex-shrink: 0;
  }

  body.game-body>.game-footer {
    flex-shrink: 0;
    margin-top: auto;
  }
}

/* Scanline overlay for retro CRT effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(0deg,
      rgba(0, 0, 0, 0.1) 0px,
      rgba(0, 0, 0, 0.1) 1px,
      transparent 1px,
      transparent 3px);
  pointer-events: none;
  z-index: 9999;
  opacity: 0.3;
}

/* ========================================
   Header
   ======================================== */

.game-header {
  text-align: center;
  padding: 30px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.game-logo {
  font-family: var(--font-pixel);
  font-size: clamp(24px, 5vw, 36px);
  font-weight: bold;
  color: #fff;
  text-shadow:
    0 0 10px var(--color-ice),
    0 0 20px var(--color-ice),
    3px 3px 0 var(--color-fire);
  letter-spacing: 2px;
  margin: 0 0 8px 0;
  animation: logo-glow 2s ease-in-out infinite alternate;
}

@keyframes logo-glow {
  from {
    text-shadow:
      0 0 10px var(--color-ice),
      0 0 20px var(--color-ice),
      3px 3px 0 var(--color-fire);
  }

  to {
    text-shadow:
      0 0 15px var(--color-primary),
      0 0 30px var(--color-ice),
      3px 3px 0 #ff8800;
  }
}

.game-tagline {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin: 0;
  padding-top: 20px;
}

@media (max-width: 600px) {
  .game-tagline {
    padding-top: 10px;
  }
}

.game-tagline a {
  color: var(--color-accent);
  text-decoration: none;
  margin-left: 10px;
  transition: color 0.2s;
}

.game-tagline a:hover {
  color: var(--color-primary);
}

/* ========================================
   Game Container - Arcade Cabinet Style
   ======================================== */

.game-wrapper {
  width: 100%;
  max-width: 720px;
  padding: 0 15px;
}

.arcade-cabinet {
  position: relative;
  background: linear-gradient(180deg, #2a2a3a 0%, #1a1a28 100%);
  border-radius: 12px;
  padding: 12px;
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.arcade-bezel {
  position: relative;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    inset 0 0 50px rgba(0, 0, 0, 0.8),
    0 0 1px rgba(255, 255, 255, 0.2);
}

/* Corner decorations */
.arcade-bezel::before,
.arcade-bezel::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-primary);
  opacity: 0.3;
  z-index: 10;
  pointer-events: none;
}

.arcade-bezel::before {
  top: 8px;
  left: 8px;
  border-right: none;
  border-bottom: none;
}

.arcade-bezel::after {
  bottom: 8px;
  right: 8px;
  border-left: none;
  border-top: none;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  cursor: pointer;
}

/* ========================================
   Start Screen Overlay
   ======================================== */

#loader {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #0a0a20 0%, #1a1a40 50%, #0a0a20 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
}

.intro-content {
  text-align: center;
  padding: 20px;
}

.intro-title {
  font-family: var(--font-pixel);
  font-size: clamp(28px, 6vw, 42px);
  font-weight: bold;
  color: #fff;
  text-shadow:
    0 0 10px var(--color-ice),
    0 0 20px var(--color-ice),
    0 0 40px #0080ff,
    4px 4px 0 var(--color-fire);
  letter-spacing: 4px;
  margin-bottom: 10px;
  animation: title-glow 2s ease-in-out infinite alternate;
}

@keyframes title-glow {
  from {
    text-shadow:
      0 0 10px var(--color-ice),
      0 0 20px var(--color-ice),
      0 0 40px #0080ff,
      4px 4px 0 var(--color-fire);
  }

  to {
    text-shadow:
      0 0 15px var(--color-primary),
      0 0 30px var(--color-ice),
      0 0 60px #0080ff,
      4px 4px 0 #ff8800;
  }
}

.intro-subtitle {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: #aaa;
  letter-spacing: 2px;
  margin-bottom: 30px;
}

.intro-decoration {
  font-size: 28px;
  margin-bottom: 40px;
  animation: decoration-float 3s ease-in-out infinite;
}

@keyframes decoration-float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

.intro-start {
  font-family: var(--font-pixel);
  font-size: clamp(16px, 4vw, 24px);
  font-weight: bold;
  color: var(--color-accent);
  text-shadow: 2px 2px 0 #804000;
  letter-spacing: 3px;
  margin-bottom: 15px;
  animation: blink-animation 1s steps(2, start) infinite;
}

.intro-hint {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: #888;
  margin-bottom: 40px;
}

.intro-credit {
  font-family: var(--font-pixel);
  font-size: 8px;
  color: #666;
  letter-spacing: 1px;
}

@keyframes blink-animation {
  to {
    visibility: hidden;
  }
}

/* ========================================
   Mobile Controls - D-Pad Style
   ======================================== */

.mobile-controls {
  display: none;
  padding: 15px;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
  max-width: 720px;
  margin: 0 auto;
  touch-action: manipulation;
}

/* D-Pad */
.dpad-container {
  position: relative;
  width: 120px;
  height: 120px;
}

.dpad {
  position: relative;
  width: 100%;
  height: 100%;
}

.dpad-btn {
  position: absolute;
  width: 40px;
  height: 40px;
  background: linear-gradient(145deg, #3a3a4a, #2a2a3a);
  border: 2px solid #444;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.1s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.dpad-btn:active {
  background: linear-gradient(145deg, #4a4a5a, #3a3a4a);
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.dpad-btn svg {
  width: 20px;
  height: 20px;
  fill: #888;
  transition: fill 0.1s;
}

.dpad-btn:active svg {
  fill: var(--color-primary);
}

.dpad-up {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.dpad-down {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.dpad-left {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}

.dpad-right {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.dpad-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  background: #2a2a3a;
  border-radius: 50%;
  border: 2px solid #333;
}

/* Action Buttons */
.action-buttons {
  display: flex;
  flex-direction: row-reverse;
  gap: 40px;
  align-items: center;
}

.action-btn {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 3px solid #444;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: var(--font-pixel);
  font-size: 10px;
  color: #888;
  transition: all 0.1s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.action-btn.ice-btn {
  background: linear-gradient(145deg, #1a4a5a, #0a3a4a);
  border-color: var(--color-ice);
}

.action-btn.ice-btn:active {
  background: linear-gradient(145deg, #2a5a6a, #1a4a5a);
  box-shadow: 0 0 20px rgba(0, 191, 255, 0.6);
  transform: scale(0.95);
}

.action-btn.restart-btn {
  width: 50px;
  height: 50px;
  background: linear-gradient(145deg, #4a3a2a, #3a2a1a);
  border-color: var(--color-accent);
}

.action-btn.restart-btn:active {
  background: linear-gradient(145deg, #5a4a3a, #4a3a2a);
  box-shadow: 0 0 15px rgba(255, 225, 127, 0.5);
  transform: scale(0.95);
}

/* ========================================
   Info Section - Controls & Level Select
   ======================================== */

.info-section {
  max-width: 720px;
  margin: 20px auto;
  padding: 0 15px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.info-card {
  background: rgba(26, 26, 46, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 16px;
  backdrop-filter: blur(10px);
}

.info-card h3 {
  font-family: var(--font-pixel);
  font-size: 12px;
  color: var(--color-primary);
  margin: 0 0 12px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Controls Grid */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.control-item {
  background: rgba(0, 0, 0, 0.3);
  padding: 10px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.control-key {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--color-accent);
}

.control-desc {
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Level Grid */
.level-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
}

.level-grid .lvl {
  background: rgba(0, 0, 0, 0.4);
  color: var(--color-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 8px 4px;
  font-family: var(--font-pixel);
  font-size: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  margin: 0;
}

.level-grid .lvl:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.level-grid .lvl:active {
  transform: scale(0.95);
}

/* ========================================
   Footer
   ======================================== */

.game-footer {
  text-align: center;
  padding: 15px;
  font-family: var(--font-pixel);
  font-size: 8px;
  color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.game-footer p {
  margin: 0;
}

.game-footer a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

.game-footer a:hover {
  color: var(--color-primary);
}

/* ========================================
   Responsive - Mobile
   ======================================== */

@media (max-width: 600px) {
  .game-header {
    padding: 15px;
  }

  .game-logo {
    font-size: 20px;
  }

  .mobile-controls {
    display: flex;
  }

  .info-section {
    grid-template-columns: 1fr;
    margin-top: 15px;
  }

  .controls-grid {
    grid-template-columns: 1fr;
  }

  .level-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  /* Hide keyboard controls info on mobile */
  .desktop-only {
    display: none;
  }

  .game-footer {
    margin-top: 15px;
  }
}

@media (min-width: 601px) {
  .mobile-only {
    display: none !important;
  }
}

/* ========================================
   Utility Classes
   ======================================== */

.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

/* Accessibility - Focus states */
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}