/* ============================
   FLY EAGLES FLY - GAME STYLES
   Tecmo Bowl NES 8-bit aesthetic
============================ */

/* ============================
   CSS VARIABLES - Color Palette
   Philadelphia Eagles + NES retro style
============================ */
:root {
  /* Eagles theme: midnight green, silver, black, white */
  --sky-top: #2a4f5c;
  --sky-bottom: #1a3a42;
  --ground-color: #000000;
  --ground-highlight: #1a1a1a;
  --grass-color: #004C54;
  --pipe-color: #A5ACAF;
  --pipe-highlight: #C5CCD2;
  --pipe-shadow: #707880;
  --bird-color: #FFFFFF;
  --bird-outline: #000000;
  
  /* Tecmo Bowl NES colors */
  --nes-black: #000000;
  --nes-white: #FCFCFC;
  --nes-silver: #A5ACAF;
  --nes-green: #004C54;
  --nes-dark-green: #003038;
  --nes-gold: #F8D878;
  
  --text-primary: var(--nes-white);
  --text-shadow: var(--nes-black);
  --overlay-bg: rgba(0, 0, 0, 0.85);
  --score-bg: rgba(0, 0, 0, 0.7);
  --accent-color: var(--nes-green);
  --gold-color: var(--nes-silver);
}

/* ============================
   RESET & BASE STYLES
============================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--nes-black);
  /* Tecmo Bowl NES pixel font */
  font-family: 'Press Start 2P', monospace;
}

/* ============================
   GAME CONTAINER
   Centers canvas with letterboxing
============================ */
#game-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--nes-black);
}

/* ============================
   CANVAS STYLING
============================ */
#game-canvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-bottom) 100%);
}

/* ============================
   SCORE DISPLAY - Top Center
   Tecmo Bowl scoreboard style
============================ */
#score-display {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 10;
  pointer-events: none;
  background: var(--nes-black);
  border: 4px solid var(--nes-silver);
  padding: 8px 16px;
  image-rendering: pixelated;
}

#current-score {
  font-size: clamp(24px, 6vw, 36px);
  color: var(--nes-white);
  text-shadow: none;
  letter-spacing: 4px;
  transition: transform 0.1s ease-out;
}

#current-score.pulse {
  animation: scorePulse 0.2s ease-out;
}

@keyframes scorePulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

#best-score-inline {
  font-size: clamp(8px, 2vw, 10px);
  color: var(--nes-silver);
  margin-top: 6px;
  letter-spacing: 1px;
}

/* ============================
   OVERLAY BASE STYLES
   NES menu screen style
============================ */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--overlay-bg);
  z-index: 20;
  opacity: 1;
  transition: opacity 0.3s ease;
}

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

.overlay-content {
  text-align: center;
  padding: 24px;
  background: var(--nes-black);
  border: 4px solid var(--nes-silver);
  max-width: 90%;
}

/* ============================
   START SCREEN STYLES
   Tecmo Bowl title screen
============================ */
.game-title {
  font-size: clamp(20px, 5vw, 32px);
  color: var(--nes-white);
  text-shadow: 
    4px 4px 0 var(--nes-green);
  letter-spacing: 2px;
  line-height: 1.4;
  margin-bottom: 16px;
}

/* Pixel-art bird icon canvas */
.bird-icon {
  display: block;
  margin: 16px auto;
  animation: birdBounce 1s ease-in-out infinite;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

@keyframes birdBounce {
  0%, 100% { transform: translateY(0) rotate(-10deg); }
  50% { transform: translateY(-8px) rotate(10deg); }
}

.instruction {
  font-size: clamp(8px, 2vw, 12px);
  color: var(--nes-silver);
  margin-top: 20px;
  animation: blink 1s step-end infinite;
  letter-spacing: 1px;
}

/* Classic NES blinking text effect */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.best-score-display {
  margin-top: 20px;
  font-size: clamp(10px, 2.5vw, 14px);
  color: var(--nes-white);
  letter-spacing: 1px;
}

.best-score-display span:last-child {
  color: var(--nes-gold);
}

/* ============================
   GAME OVER SCREEN STYLES
   Tecmo Bowl game over screen
============================ */
.game-over-title {
  font-size: clamp(16px, 4vw, 24px);
  color: #FC4848;
  text-shadow: 
    3px 3px 0 #880000;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.score-summary {
  background: var(--nes-dark-green);
  border: 4px solid var(--nes-silver);
  padding: 16px 24px;
  margin: 16px 0;
}

.score-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: clamp(10px, 2.5vw, 14px);
  color: var(--nes-white);
  margin: 8px 0;
  letter-spacing: 1px;
}

.score-row span:last-child {
  color: var(--nes-gold);
}

.new-best {
  font-size: clamp(10px, 2.5vw, 14px);
  color: var(--nes-gold);
  margin-top: 12px;
  animation: blink 0.5s step-end infinite;
  letter-spacing: 2px;
}

/* ============================
   MUTE BUTTON - NES Style
============================ */
.mute-button {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 25;
  background: var(--nes-black);
  border: 4px solid var(--nes-silver);
  color: var(--nes-white);
  font-family: 'Press Start 2P', monospace;
  font-size: 16px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  image-rendering: pixelated;
}

.mute-button:hover {
  background: var(--nes-green);
  border-color: var(--nes-white);
}

.mute-button:active {
  transform: scale(0.95);
}

/* ============================
   TAP INDICATOR - Mobile
============================ */
#tap-indicator {
  position: absolute;
  bottom: 80px;
  right: 24px;
  font-size: 10px;
  color: var(--nes-white);
  background: var(--nes-black);
  border: 2px solid var(--nes-silver);
  padding: 8px 12px;
  z-index: 15;
  animation: tapFade 2s ease-in-out forwards;
  letter-spacing: 1px;
}

@keyframes tapFade {
  0%, 50% { opacity: 1; }
  100% { opacity: 0; pointer-events: none; }
}

/* ============================
   UTILITY CLASSES
============================ */
.hidden {
  display: none !important;
}

/* ============================
   SCREEN SHAKE EFFECT
   Applied to game container on collision
============================ */
@keyframes screenShake {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-4px, -2px); }
  20% { transform: translate(4px, 2px); }
  30% { transform: translate(-3px, 2px); }
  40% { transform: translate(3px, -2px); }
  50% { transform: translate(-2px, 2px); }
  60% { transform: translate(2px, -2px); }
  70% { transform: translate(-2px, 1px); }
  80% { transform: translate(2px, -1px); }
  90% { transform: translate(-1px, 1px); }
}

.shake {
  animation: screenShake 0.3s ease-out;
}

/* ============================
   RESPONSIVE ADJUSTMENTS
============================ */
@media (max-width: 480px) {
  .overlay-content {
    padding: 16px 12px;
  }
  
  .score-summary {
    padding: 12px 16px;
  }
  
  .score-row {
    gap: 16px;
  }
  
  #score-display {
    padding: 6px 12px;
    border-width: 3px;
  }
  
  .mute-button {
    width: 40px;
    height: 40px;
    border-width: 3px;
  }
}

@media (min-height: 800px) {
  .game-title {
    margin-bottom: 24px;
  }
  
  .bird-icon {
    margin: 24px auto;
  }
}