*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-deep: #0a0e17;
  --bg-card: rgba(18, 24, 38, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8ecf4;
  --text-muted: #8892a8;
  --accent: #00e5a0;
  --accent-glow: rgba(0, 229, 160, 0.35);
  --accent-secondary: #7c5cff;
  --danger: #ff5c7a;
  --fruit: #ff6b35;
  --grid: rgba(255, 255, 255, 0.03);
  --radius: 16px;
  --radius-sm: 10px;
  --font: 'Outfit', system-ui, sans-serif;
}

html {
  height: 100%;
}

body {
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg-deep);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Animated background */
.background {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: -150px;
  right: -100px;
  opacity: 0.15;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-secondary);
  bottom: -100px;
  left: -80px;
  opacity: 0.12;
  animation-delay: -7s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: var(--fruit);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.08;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.container {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.main-layout {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 2rem;
}

.game-wrapper {
  width: 100%;
  max-width: 400px;
  flex: 0 1 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 1.75rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.logo-icon {
  font-size: 2rem;
  filter: drop-shadow(0 0 12px var(--accent-glow));
}

.header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  margin-top: 0.35rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 300;
}

/* Mascot panel */
.mascot-panel {
  flex: 0 1 320px;
  width: 100%;
  max-width: 320px;
  position: sticky;
  top: 2rem;
}

.mascot-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem 1.25rem;
  backdrop-filter: blur(12px);
  box-shadow:
    0 0 0 1px var(--border),
    0 16px 48px rgba(0, 0, 0, 0.35),
    0 0 60px rgba(124, 92, 255, 0.12);
  text-align: center;
}

.mascot-eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.mascot-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0.25rem 0 1rem;
  background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mascot-caption {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 300;
}

.funny-snake {
  position: relative;
  height: 340px;
  margin: 0 auto;
  animation: mascotBob 3s ease-in-out infinite;
}

@keyframes mascotBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.speech-bubble {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.95);
  color: var(--bg-deep);
  padding: 0.65rem 0.9rem;
  border-radius: 14px;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
  max-width: 200px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  z-index: 5;
  animation: bubblePop 0.4s ease;
}

.speech-bubble::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 10px solid rgba(255, 255, 255, 0.95);
}

@keyframes bubblePop {
  0% { transform: translateX(-50%) scale(0.8); opacity: 0; }
  100% { transform: translateX(-50%) scale(1); opacity: 1; }
}

.snake-head-mascot {
  position: absolute;
  top: 58px;
  left: 50%;
  transform: translateX(-50%);
  width: 88px;
  height: 88px;
  z-index: 4;
  animation: headWiggle 2s ease-in-out infinite;
}

@keyframes headWiggle {
  0%, 100% { transform: translateX(-50%) rotate(-3deg); }
  50% { transform: translateX(-50%) rotate(5deg); }
}

.snake-head-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.party-hat {
  position: absolute;
  top: -18px;
  right: -4px;
  font-size: 1.6rem;
  transform: rotate(18deg);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
  animation: hatTilt 1.5s ease-in-out infinite alternate;
}

@keyframes hatTilt {
  from { transform: rotate(12deg); }
  to { transform: rotate(24deg); }
}

.snake-tongue {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 22px solid #ff4757;
  filter: drop-shadow(0 2px 4px rgba(255, 71, 87, 0.4));
  animation: tongueFlick 0.35s ease-in-out infinite alternate;
  z-index: 3;
}

.snake-tongue::after {
  content: '';
  position: absolute;
  top: -24px;
  left: -3px;
  width: 6px;
  height: 8px;
  background: #ff4757;
  border-radius: 0 0 3px 3px;
}

@keyframes tongueFlick {
  from { transform: translateX(-50%) scaleY(0.7); }
  to { transform: translateX(-50%) scaleY(1.1); }
}

.snake-body-svg {
  position: absolute;
  top: 120px;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 200px;
  overflow: visible;
}

.snake-path {
  fill: none;
  stroke: url(#bodyGrad);
  stroke-width: 22;
  stroke-linecap: round;
  stroke-dasharray: 12 8;
  animation: slither 2s linear infinite;
}

@keyframes slither {
  to { stroke-dashoffset: -40; }
}

.snake-segments {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.snake-segments .segment {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #00c48c 100%);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: segmentWiggle 1.8s ease-in-out infinite;
}

.snake-segments .segment:nth-child(1)  { width: 20px; height: 20px; top: 138px; left: 108px; animation-delay: 0s; }
.snake-segments .segment:nth-child(2)  { width: 19px; height: 19px; top: 155px; left: 88px;  animation-delay: 0.1s; }
.snake-segments .segment:nth-child(3)  { width: 18px; height: 18px; top: 172px; left: 72px;  animation-delay: 0.2s; }
.snake-segments .segment:nth-child(4)  { width: 18px; height: 18px; top: 188px; left: 82px;  animation-delay: 0.3s; }
.snake-segments .segment:nth-child(5)  { width: 17px; height: 17px; top: 200px; left: 108px; animation-delay: 0.4s; }
.snake-segments .segment:nth-child(6)  { width: 17px; height: 17px; top: 208px; left: 138px; animation-delay: 0.5s; }
.snake-segments .segment:nth-child(7)  { width: 16px; height: 16px; top: 218px; left: 162px; animation-delay: 0.6s; }
.snake-segments .segment:nth-child(8)  { width: 15px; height: 15px; top: 232px; left: 148px; animation-delay: 0.7s; }
.snake-segments .segment:nth-child(9)  { width: 14px; height: 14px; top: 248px; left: 118px; animation-delay: 0.8s; }
.snake-segments .segment:nth-child(10) { width: 12px; height: 12px; top: 262px; left: 98px;  animation-delay: 0.9s; }

@keyframes segmentWiggle {
  0%, 100% { transform: scale(1) translateX(0); }
  50% { transform: scale(1.08) translateX(3px); }
}

.tiny-legs {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  display: flex;
  justify-content: space-between;
  z-index: 2;
}

.leg {
  font-size: 1.1rem;
  animation: legKick 0.6s ease-in-out infinite alternate;
}

.leg-right {
  animation-delay: 0.3s;
  transform: scaleX(-1);
}

@keyframes legKick {
  from { transform: translateY(0) rotate(-10deg); }
  to { transform: translateY(-4px) rotate(10deg); }
}

.leg-right {
  animation-name: legKickRight;
}

@keyframes legKickRight {
  from { transform: scaleX(-1) translateY(0) rotate(-10deg); }
  to { transform: scaleX(-1) translateY(-4px) rotate(10deg); }
}

/* Scoreboard */
.scoreboard {
  display: flex;
  gap: 1rem;
  width: 100%;
  margin-bottom: 1rem;
}

.score-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  backdrop-filter: blur(12px);
}

.score-card--best {
  border-color: rgba(124, 92, 255, 0.25);
}

.score-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
}

.score-value {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 0.15rem;
  font-variant-numeric: tabular-nums;
}

.score-card--best .score-value {
  color: var(--accent-secondary);
}

/* Canvas */
.canvas-container {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--border),
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 80px var(--accent-glow);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  background: rgba(10, 14, 23, 0.95);
}

/* Overlays */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 14, 23, 0.88);
  backdrop-filter: blur(8px);
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 10;
}

.overlay--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.overlay-content {
  text-align: center;
  padding: 2rem 1.5rem;
  max-width: 320px;
}

.overlay-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.overlay-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 1.5rem;
}

.final-score {
  font-size: 1.25rem !important;
  color: var(--text) !important;
  font-weight: 600;
}

.final-score span {
  color: var(--accent);
}

.new-record {
  color: var(--accent) !important;
  font-weight: 600;
  margin-top: -1rem !important;
  margin-bottom: 1rem !important;
}

/* Speed control */
.speed-control {
  width: 100%;
  margin-bottom: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  backdrop-filter: blur(12px);
}

.speed-control--disabled {
  opacity: 0.55;
  pointer-events: none;
}

.speed-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.speed-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--accent-secondary) 0%,
    var(--accent) 100%
  );
  outline: none;
  cursor: pointer;
}

.speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--text);
  border: 3px solid var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  cursor: grab;
  transition: transform 0.15s ease;
}

.speed-slider::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.1);
}

.speed-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--text);
  border: 3px solid var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  cursor: grab;
}

.speed-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

#speedValue {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
}

/* Buttons */
.btn {
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #00c48c 100%);
  color: var(--bg-deep);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Controls */
.controls {
  width: 100%;
  margin-top: 1.25rem;
}

.control-hints {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.75rem;
  height: 1.75rem;
  padding: 0 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font);
  font-size: 0.75rem;
  color: var(--text);
}

/* Mobile D-pad */
.mobile-controls {
  display: none;
  position: relative;
  width: 180px;
  height: 180px;
  margin: 1.25rem auto 0;
}

.d-pad-btn {
  position: absolute;
  width: 56px;
  height: 56px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: background 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.d-pad-btn:active {
  background: rgba(0, 229, 160, 0.2);
  transform: scale(0.95);
}

.d-pad-up    { top: 0;    left: 50%; transform: translateX(-50%); }
.d-pad-down  { bottom: 0; left: 50%; transform: translateX(-50%); }
.d-pad-left  { left: 0;   top: 50%;  transform: translateY(-50%); }
.d-pad-right { right: 0;  top: 50%;  transform: translateY(-50%); }

.d-pad-up:active    { transform: translateX(-50%) scale(0.95); }
.d-pad-down:active  { transform: translateX(-50%) scale(0.95); }
.d-pad-left:active  { transform: translateY(-50%) scale(0.95); }
.d-pad-right:active { transform: translateY(-50%) scale(0.95); }

/* Footer */
.footer {
  margin-top: 2rem;
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 300;
}

/* Responsive */
@media (max-width: 820px) {
  .main-layout {
    flex-direction: column;
    align-items: center;
  }

  .mascot-panel {
    position: static;
    max-width: 400px;
    order: -1;
  }

  .funny-snake {
    height: 300px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 1.25rem 1rem 1rem;
  }

  .header h1 {
    font-size: 2rem;
  }

  .control-hints {
    display: none;
  }

  .mobile-controls {
    display: block;
  }
}

@media (hover: none) and (pointer: coarse) {
  .control-hints {
    display: none;
  }

  .mobile-controls {
    display: block;
  }
}