/* ============================================
   Turtle Savior — Global Styles (Fullscreen)
   ============================================ */

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: 'Courier New', Courier, monospace;
}

/* ── Game Container ── */
#game-container {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
}

#gameCanvas {
  display: block;
  width: 100vw;
  height: 100vh;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  touch-action: none;   /* prevent browser scroll/zoom on touch */
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

/* ── HUD Overlay ── */
#ui-overlay {
  position: fixed;
  top: 12px;
  left: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  pointer-events: none;
  z-index: 5;
}

#hud-right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

#score-display {
  color: #00ffcc;
  font-size: 18px;
  font-weight: bold;
  text-shadow: 0 0 8px #00ffcc;
  background: rgba(0, 0, 0, 0.55);
  padding: 6px 14px;
  border-radius: 4px;
  border: 1px solid #00ffcc44;
}

#hiscore-display {
  color: #ffdd44;
  font-size: 14px;
  font-weight: bold;
  text-shadow: 0 0 8px #ffdd44;
  background: rgba(0, 0, 0, 0.55);
  padding: 4px 14px;
  border-radius: 4px;
  border: 1px solid #ffdd4444;
}

/* ── Screens (game over only) ── */
.screen {
  position: fixed;
  inset: 0;
  display: none;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.92);
  z-index: 100;
}

.screen.active {
  display: flex;
}

.screen-content {
  text-align: center;
  color: #e0f7ff;
  max-width: 480px;
  width: 90%;
  padding: 40px 30px;
}

/* GAME OVER big yellow title */
.screen-content h1 {
  font-size: 5.5rem;
  font-weight: 900;
  color: #ffe600;
  text-shadow: 0 0 24px #ffcc00, 0 0 60px #ff990088;
  letter-spacing: 10px;
  margin-bottom: 32px;
  min-height: 6rem;
  font-family: 'Courier New', Courier, monospace;
  text-transform: uppercase;
}

/* Blinking cursor after typing */
.screen-content h1::after {
  content: '|';
  animation: blink-cursor 0.75s step-end infinite;
  color: #ffe600;
}

/* Hide cursor once typing is done */
.screen-content h1.done::after {
  display: none;
}

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

/* Stats — fade in after title */
#final-score-text,
#final-wave-text {
  font-size: 1.2rem;
  margin: 8px 0;
  color: #ffdd88;
  opacity: 0;
  transition: opacity 0.6s ease;
}

#final-hi-text {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.eco-message {
  font-size: 1rem;
  color: #88ffcc;
  margin: 20px 0 28px;
  font-style: italic;
  opacity: 0;
  transition: opacity 1.2s ease;
}

/* Reveal helper */
.reveal {
  opacity: 1 !important;
}

/* ── Button ── */
.btn {
  background: transparent;
  color: #ffe600;
  border: 3px solid #ffe600;
  padding: 14px 48px;
  font-size: 1.3rem;
  font-family: 'Courier New', Courier, monospace;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.1s, box-shadow 0.2s;
  box-shadow: 0 0 18px #ffe60066;
}

.btn:hover {
  background: #ffe600;
  color: #000;
  transform: scale(1.06);
  box-shadow: 0 0 32px #ffe600aa;
}

.btn:active {
  transform: scale(0.97);
}

/* ══════════════════════════════════════════
   Hamburger button — top right
   ══════════════════════════════════════════ */
#pause-btn {
  position: fixed;
  top: 14px;
  right: 18px;
  width: 42px;
  height: 42px;
  background: rgba(0, 0, 0, 0.6);
  border: 2px solid #00ffcc66;
  border-radius: 6px;
  cursor: pointer;
  display: none;          /* shown only during gameplay via JS */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: 0;
  z-index: 50;
  transition: background 0.15s, border-color 0.15s;
}

#pause-btn.visible {
  display: flex;
}

#pause-btn span {
  display: block;
  width: 22px;
  height: 3px;
  background: #00ffcc;
  border-radius: 2px;
  transition: background 0.15s;
}

#pause-btn:hover {
  background: rgba(0, 255, 204, 0.15);
  border-color: #00ffcc;
}

#pause-btn:hover span {
  background: #ffffff;
}

/* ══════════════════════════════════════════
   Pause overlay + panel
   ══════════════════════════════════════════ */
#pause-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 8, 30, 0.78);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

#pause-overlay.open {
  opacity: 1;
  pointer-events: all;
}

#pause-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  background: rgba(0, 12, 40, 0.96);
  border: 2px solid #00ffcc55;
  border-radius: 10px;
  padding: 36px 44px 32px;
  box-shadow: 0 0 40px #00ffcc22, inset 0 0 30px rgba(0,255,204,0.04);
  transform: scale(0.88) translateY(10px);
  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s ease;
  opacity: 0;

  /* subtle floating animation when open */
  animation: none;
}

#pause-overlay.open #pause-panel {
  transform: scale(1) translateY(0);
  opacity: 1;
  animation: panel-float 3s ease-in-out infinite;
}

@keyframes panel-float {
  0%, 100% { transform: scale(1) translateY(0px);  }
  50%       { transform: scale(1) translateY(-5px); }
}

#pause-title {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: 8px;
  color: #00ffcc;
  text-shadow: 0 0 16px #00ffcc, 0 0 32px #00ffcc44;
  margin-bottom: 8px;
  font-family: 'Courier New', Courier, monospace;
}

/* Pause menu buttons */
.pause-menu-btn {
  width: 200px;
  padding: 13px 0;
  background: transparent;
  color: #00ffcc;
  border: 2px solid #00ffcc55;
  border-radius: 6px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s,
              transform 0.1s, box-shadow 0.15s;
  box-shadow: 0 0 0 transparent;
}

.pause-menu-btn:hover {
  background: rgba(0, 255, 204, 0.12);
  border-color: #00ffcc;
  color: #ffffff;
  transform: scale(1.04);
  box-shadow: 0 0 18px #00ffcc44;
}

.pause-menu-btn:active {
  transform: scale(0.97);
}

/* Exit button gets a red tint */
#pm-exit {
  color: #ff5544;
  border-color: #ff554455;
}

#pm-exit:hover {
  background: rgba(255, 85, 68, 0.12);
  border-color: #ff5544;
  color: #ffffff;
  box-shadow: 0 0 18px #ff554444;
}

/* ══════════════════════════════════════════
   Intro video screen
   ══════════════════════════════════════════ */
#intro-screen {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 0.6s ease;
  overflow: hidden;
}

#intro-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

#intro-screen.hidden {
  display: none;
}

#intro-video {
  display: none; /* rendered via canvas instead */
}

#intro-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: #000;
}

#intro-skip {
  position: absolute;
  bottom: 32px;
  right: 32px;
  background: transparent;
  color: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 8px 22px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 3px;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

#intro-skip:hover {
  color: #fff;
  border-color: #fff;
}

/* ── Intro replay button — top left on main menu ── */
#intro-replay-btn {
  position: fixed;
  top: 14px;
  left: 18px;
  background: transparent;
  color: rgba(0, 255, 204, 0.7);
  border: 1px solid rgba(0, 255, 204, 0.35);
  padding: 8px 16px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.78rem;
  font-weight: bold;
  letter-spacing: 3px;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  display: none;
  z-index: 50;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

#intro-replay-btn.visible {
  display: block;
}

#intro-replay-btn:hover {
  color: #fff;
  border-color: #00ffcc;
  background: rgba(0, 255, 204, 0.1);
}

/* ══════════════════════════════════════════
   Loading Screen
   ══════════════════════════════════════════ */
#loading-screen {
  position: fixed;
  inset: 0;
  background: #000d1a;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

#loading-screen.active {
  opacity: 1;
  pointer-events: all;
}

#loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

#loading-title {
  font-family: 'Orbitron', 'Courier New', monospace;
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 10px;
  color: #00eeff;
  text-shadow: 0 0 20px #00ccff, 0 0 40px #00ccff44;
  animation: loading-pulse 1s ease-in-out infinite;
}

@keyframes loading-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

#loading-bar-wrap {
  width: 280px;
  height: 6px;
  background: rgba(0, 200, 255, 0.15);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid rgba(0, 200, 255, 0.3);
}

#loading-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00ccff, #00eeff, #ffffff);
  border-radius: 3px;
  box-shadow: 0 0 10px #00ccff;
  transition: width 0.1s linear;
}

#loading-label {
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  letter-spacing: 3px;
  color: rgba(0, 200, 255, 0.6);
  text-transform: uppercase;
}

/* ══════════════════════════════════════════
   Click-to-start splash (needed for audio autoplay)
   ══════════════════════════════════════════ */
#start-splash {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  cursor: pointer;
  transition: opacity 0.5s ease;
}

#start-splash.hidden {
  opacity: 0;
  pointer-events: none;
}

#start-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

#start-title {
  font-family: 'Orbitron', 'Courier New', monospace;
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: 8px;
  color: #00eeff;
  text-shadow: 0 0 30px #00ccff, 0 0 60px #00ccff44;
  text-align: center;
}

#start-btn {
  font-family: 'Orbitron', 'Courier New', monospace;
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  font-weight: 700;
  letter-spacing: 5px;
  color: #ffffff;
  border: 2px solid rgba(255,255,255,0.4);
  padding: 14px 40px;
  border-radius: 4px;
  animation: splash-pulse 1.4s ease-in-out infinite;
}

@keyframes splash-pulse {
  0%, 100% { opacity: 1; border-color: rgba(0,238,255,0.8); color: #00eeff; }
  50%       { opacity: 0.5; border-color: rgba(0,238,255,0.2); color: #aaeeff; }
}