/* Neo Snake - Stylesheet */

:root {
  --bg-color: #08080c;
  --panel-bg: rgba(20, 20, 28, 0.7);
  --panel-border: rgba(255, 255, 255, 0.05);
  
  --neon-green: #39ff14;
  --neon-green-glow: rgba(57, 255, 20, 0.5);
  --neon-magenta: #ff007f;
  --neon-magenta-glow: rgba(255, 0, 127, 0.5);
  --neon-cyan: #00f0ff;
  --neon-cyan-glow: rgba(0, 240, 255, 0.5);
  --neon-yellow: #ffdf00;
  
  --text-primary: #ffffff;
  --text-secondary: #8a8a9d;
  --font-display: 'Outfit', 'Noto Sans KR', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-display);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Background Glowing Orbs */
.bg-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(100px);
  z-index: 0;
  pointer-events: none;
  animation: float-glow 15s infinite alternate ease-in-out;
}

.bg-glow-green {
  background-color: var(--neon-green);
  top: -100px;
  left: -100px;
}

.bg-glow-magenta {
  background-color: var(--neon-magenta);
  bottom: -100px;
  right: -100px;
  animation-delay: -5s;
}

@keyframes float-glow {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(50px, 50px) scale(1.2);
  }
}

/* Game Wrapper Container */
.game-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 100%;
  max-height: 850px;
  background-color: rgba(10, 10, 15, 0.85);
  border: 1px solid var(--panel-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  z-index: 1;
  overflow-y: auto;
  scrollbar-width: none; /* Firefox */
}

.game-wrapper::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

/* Screens System */
.screen {
  display: none;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: 24px;
  justify-content: space-between;
}

.screen.active {
  display: flex;
  animation: screen-fade-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes screen-fade-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 1. START MENU SCREEN STYLING */
.title-container {
  text-align: center;
  margin-top: 20px;
}

.game-logo {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.game-logo .highlight {
  color: var(--neon-green);
  text-shadow: 0 0 15px var(--neon-green-glow);
}

.tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 8px;
  letter-spacing: 0.5px;
}

.best-score-badge {
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.08), rgba(255, 0, 127, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  padding: 8px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 15px auto;
  width: fit-content;
  box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.02);
}

.best-score-badge .label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  margin-right: 12px;
}

.best-score-badge .value {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--neon-green);
  text-shadow: 0 0 8px var(--neon-green-glow);
}

.menu-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex-grow: 1;
  justify-content: center;
  margin: 20px 0;
}

.settings-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-group h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  border-left: 3px solid var(--neon-magenta);
  padding-left: 8px;
}

.settings-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.settings-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 12px 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.25s ease;
  min-height: 70px;
}

.settings-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
}

.settings-card.active {
  border-color: var(--neon-green);
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.15);
  background: rgba(57, 255, 20, 0.03);
}

.difficulty-cards .settings-card[data-difficulty="normal"].active {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 15px rgba(255, 0, 127, 0.15);
  background: rgba(255, 0, 127, 0.03);
}

.difficulty-cards .settings-card[data-difficulty="hard"].active {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
  background: rgba(0, 240, 255, 0.03);
}

.card-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.text-green { color: var(--neon-green); }
.text-magenta { color: var(--neon-magenta); }
.text-cyan { color: var(--neon-cyan); }

.card-desc {
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.3;
}

/* Skin Themes Selectors */
.skin-preview {
  width: 28px;
  height: 12px;
  border-radius: 20px;
  display: block;
}

.preview-hybrid {
  background: linear-gradient(90deg, var(--neon-green), var(--neon-magenta));
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
}

.preview-green {
  background-color: var(--neon-green);
  box-shadow: 0 0 8px var(--neon-green-glow);
}

.preview-magenta {
  background-color: var(--neon-magenta);
  box-shadow: 0 0 8px var(--neon-magenta-glow);
}

/* Controls Info Card */
.info-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 16px;
}

.info-card h3 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}

.control-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.control-list code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-primary);
  font-family: monospace;
}

/* Primary Action Buttons */
.action-btn {
  width: 100%;
  height: 56px;
  border-radius: 16px;
  border: none;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 2px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.neon-btn-green {
  background-color: var(--neon-green);
  color: #000000;
  box-shadow: 0 0 20px var(--neon-green-glow);
}

.neon-btn-green:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--neon-green);
}

.neon-btn-green:active {
  transform: translateY(1px);
}

.neon-btn-magenta {
  background-color: var(--neon-magenta);
  color: #ffffff;
  box-shadow: 0 0 20px var(--neon-magenta-glow);
}

.neon-btn-magenta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--neon-magenta);
}

.neon-btn-magenta:active {
  transform: translateY(1px);
}

/* 2. GAME SCREEN STYLING */
.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.score-box {
  display: flex;
  flex-direction: column;
}

.hud-label {
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  margin-bottom: 2px;
}

.hud-value {
  font-size: 1.4rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.combo-box {
  flex-grow: 1;
  max-width: 160px;
  margin: 0 15px;
  display: flex;
  flex-direction: column;
}

.combo-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 4px;
}

.combo-mult {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--neon-magenta);
  text-shadow: 0 0 8px var(--neon-magenta-glow);
  transition: transform 0.1s ease;
}

.combo-bar-bg {
  width: 100%;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  overflow: hidden;
}

.combo-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--neon-green), var(--neon-magenta));
  border-radius: 10px;
  transition: width 0.05s linear;
}

.control-buttons {
  display: flex;
  gap: 8px;
}

.hud-icon-btn {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.2s ease;
}

.hud-icon-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

/* Canvas Display styling */
.canvas-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 20px;
  background-color: #020204;
  overflow: hidden;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.8), inset 0 0 40px rgba(0, 0, 0, 0.9);
  border: 2px solid var(--neon-green);
  transition: border-color 0.5s ease, box-shadow 0.5s ease;
}

.canvas-container.theme-neon-green {
  border-color: var(--neon-green);
  box-shadow: 0 0 25px rgba(57, 255, 20, 0.15), inset 0 0 40px rgba(0,0,0,0.9);
}

.canvas-container.theme-cyber-pink {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 25px rgba(255, 0, 127, 0.15), inset 0 0 40px rgba(0,0,0,0.9);
}

.canvas-container.theme-green-pink {
  border-color: var(--neon-green);
  box-shadow: 0 0 25px rgba(255, 0, 127, 0.15), inset 0 0 40px rgba(0,0,0,0.9);
  animation: border-cycle 12s infinite alternate ease-in-out;
}

@keyframes border-cycle {
  0% { border-color: var(--neon-green); box-shadow: 0 0 25px rgba(57, 255, 20, 0.15); }
  100% { border-color: var(--neon-magenta); box-shadow: 0 0 25px rgba(255, 0, 127, 0.15); }
}

#game-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Overlay Info texts */
.overlay-text {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(2, 2, 4, 0.8);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 2px;
  z-index: 5;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

#countdown-overlay {
  color: var(--neon-green);
  text-shadow: 0 0 15px var(--neon-green-glow);
}

#paused-overlay {
  color: var(--neon-cyan);
  text-shadow: 0 0 15px var(--neon-cyan-glow);
}

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

/* D-PAD STYLING */
.dpad-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 15px;
  flex-grow: 1;
  min-height: 140px;
}

.dpad {
  position: relative;
  width: 150px;
  height: 150px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 4px;
}

.dpad-btn {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.dpad-btn:active, .dpad-btn.active {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(0.92);
}

.dpad-btn.up {
  grid-column: 2;
  grid-row: 1;
  border-bottom: none;
  border-radius: 14px 14px 4px 4px;
  box-shadow: 0 -4px 10px rgba(255, 255, 255, 0.03);
}
.dpad-btn.left {
  grid-column: 1;
  grid-row: 2;
  border-right: none;
  border-radius: 14px 4px 4px 14px;
  box-shadow: -4px 0 10px rgba(255, 255, 255, 0.03);
}
.dpad-center {
  grid-column: 2;
  grid-row: 2;
  background: rgba(15, 15, 22, 0.8);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
}
.dpad-btn.right {
  grid-column: 3;
  grid-row: 2;
  border-left: none;
  border-radius: 4px 14px 14px 4px;
  box-shadow: 4px 0 10px rgba(255, 255, 255, 0.03);
}
.dpad-btn.down {
  grid-column: 2;
  grid-row: 3;
  border-top: none;
  border-radius: 4px 4px 14px 14px;
  box-shadow: 0 4px 10px rgba(255, 255, 255, 0.03);
}

/* Customize active highlights based on theme skin */
.theme-green-pink .dpad-btn:active, .theme-green-pink .dpad-btn.active {
  border-color: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green-glow);
  color: var(--neon-green);
}
.theme-neon-green .dpad-btn:active, .theme-neon-green .dpad-btn.active {
  border-color: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green-glow);
  color: var(--neon-green);
}
.theme-cyber-pink .dpad-btn:active, .theme-cyber-pink .dpad-btn.active {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 10px var(--neon-magenta-glow);
  color: var(--neon-magenta);
}

/* 3. GAME OVER SCREEN STYLING */
.gameover-title {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: 4px;
  text-shadow: 0 0 15px var(--neon-magenta-glow);
  text-align: center;
}

.new-record-badge {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--neon-yellow);
  background: rgba(255, 223, 0, 0.1);
  border: 1px solid var(--neon-yellow);
  border-radius: 20px;
  padding: 6px 16px;
  margin: 12px auto 0;
  width: fit-content;
  text-shadow: 0 0 10px rgba(255, 223, 0, 0.3);
  animation: pulse-badge 1s infinite alternate;
}

@keyframes pulse-badge {
  0% { transform: scale(1); box-shadow: 0 0 5px rgba(255, 223, 0, 0.1); }
  100% { transform: scale(1.05); box-shadow: 0 0 15px rgba(255, 223, 0, 0.3); }
}

.gameover-results {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 24px;
  margin: 30px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
  padding-bottom: 12px;
}

.result-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.result-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.result-value {
  font-size: 1.6rem;
  font-weight: 800;
}

.gameover-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.action-btn-secondary {
  width: 100%;
  height: 52px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-secondary);
  border-radius: 16px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

.action-btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
}

/* Screens responsivitiy tweaks */
@media (max-height: 700px) {
  .game-wrapper {
    max-height: 100vh;
    border: none;
  }
  .screen {
    padding: 16px;
  }
  .game-logo {
    font-size: 2.2rem;
  }
  .menu-content {
    gap: 12px;
    margin: 10px 0;
  }
  .settings-card {
    min-height: 55px;
    padding: 8px 4px;
  }
  .card-desc {
    display: none; /* Hide descriptions to save space */
  }
  .info-card {
    padding: 10px 14px;
  }
  .dpad-container {
    min-height: 120px;
    margin-top: 8px;
  }
  .dpad {
    width: 120px;
    height: 120px;
  }
  .dpad-btn {
    font-size: 1rem;
  }
}