/* ========================================
   Hangman - game4.fun UI System
   Dark glassmorphism with neon accents
======================================== */

:root {
  --bg-dark: #050510;
  --bg-card: rgba(20, 20, 35, 0.8);
  --primary-neon: #6366f1;
  --secondary-neon: #ec4899;
  --accent-cyan: #06b6d4;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --text-main: #f1f5f9;
  --text-dim: rgba(148, 163, 184, 0.7);
  --border-glass: rgba(255, 255, 255, 0.1);
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

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

body {
  background: var(--bg-dark);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Background ambient glow */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 60%);
  z-index: -1;
  animation: ambientDrift 20s ease-in-out infinite alternate;
}

@keyframes ambientDrift {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-2%, -1%) rotate(3deg); }
}

/* ========== Header ========== */
.g4f-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(10, 10, 20, 0.6);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 1.1rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
}

.highlight-4 {
  color: var(--secondary-neon);
  font-weight: 700;
}

.lang-switch {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.lang-btn.active {
  background: var(--primary-neon);
  color: white;
}

/* ========== Game Container ========== */
.game-container {
  flex: 1;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.game-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-neon), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-dim);
  margin-top: 4px;
  font-size: 0.95rem;
}

/* ========== Controls ========== */
.controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.category-selector label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.category-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cat-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.cat-btn:hover {
  border-color: var(--primary-neon);
  color: var(--text-main);
}

.cat-btn.active {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--primary-neon);
  color: var(--primary-neon);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}

.action-btns {
  display: flex;
  gap: 8px;
}

.new-game-btn {
  flex: 1;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--primary-neon), var(--accent-cyan));
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.new-game-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.hint-btn {
  padding: 10px 18px;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-md);
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s;
}

.hint-btn:hover:not(:disabled) {
  background: rgba(6, 182, 212, 0.25);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
}

.hint-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.hint-count {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* ========== Stats Bar ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 10px 8px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* ========== Game Area ========== */
.game-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.canvas-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 16px;
  backdrop-filter: blur(10px);
}

#hangman-canvas {
  display: block;
}

/* ========== Word Display ========== */
.word-display {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
}

.letter-slot {
  width: 36px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  border-bottom: 3px solid var(--border-glass);
  color: var(--text-main);
  transition: all 0.3s;
  text-transform: uppercase;
}

.letter-slot.revealed {
  border-bottom-color: var(--accent-green);
  animation: revealPop 0.3s ease;
}

.letter-slot.hint-reveal {
  border-bottom-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.letter-slot.lose-reveal {
  border-bottom-color: var(--accent-red);
  color: var(--accent-red);
}

@keyframes revealPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* ========== Keyboard ========== */
.keyboard {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px;
  max-width: 520px;
  margin: 0 auto;
  padding: 0 4px;
}

.key-btn {
  width: 38px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.key-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary-neon);
  transform: translateY(-1px);
}

.key-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.key-btn:disabled {
  cursor: not-allowed;
  opacity: 0.9;
}

.key-btn.correct {
  background: rgba(34, 197, 94, 0.25);
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.2);
}

.key-btn.wrong {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--accent-red);
  color: var(--accent-red);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.15);
}

/* ========== Modal ========== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: rgba(20, 20, 35, 0.95);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  text-align: center;
  max-width: 380px;
  width: 100%;
  backdrop-filter: blur(20px);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal h2 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.modal h2.win {
  background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal h2.lose {
  background: linear-gradient(135deg, var(--accent-red), var(--secondary-neon));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-word {
  color: var(--text-dim);
  font-size: 1rem;
  margin-bottom: 20px;
}

.result-word strong {
  color: var(--accent-cyan);
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.win-stats {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 24px;
}

.win-stat {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 12px 20px;
}

.win-stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.win-stat-value {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.play-again-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary-neon), var(--accent-cyan));
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.play-again-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

/* ========== Ad Container ========== */
.g4f-ad-container {
  max-width: 640px;
  width: 100%;
  margin: 16px auto;
  padding: 20px;
  text-align: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
}

.ad-placeholder-content {
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* ========== Footer ========== */
.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-glass);
}

/* ========== Win/Lose Animations ========== */
@keyframes winCelebrate {
  0% { text-shadow: 0 0 10px rgba(34, 197, 94, 0.5); }
  50% { text-shadow: 0 0 30px rgba(34, 197, 94, 0.8), 0 0 60px rgba(6, 182, 212, 0.4); }
  100% { text-shadow: 0 0 10px rgba(34, 197, 94, 0.5); }
}

@keyframes losePulse {
  0% { text-shadow: 0 0 10px rgba(239, 68, 68, 0.5); }
  50% { text-shadow: 0 0 25px rgba(239, 68, 68, 0.8); }
  100% { text-shadow: 0 0 10px rgba(239, 68, 68, 0.5); }
}

.word-display.win .letter-slot {
  animation: winCelebrate 1s ease-in-out infinite;
  border-bottom-color: var(--accent-green);
}

.word-display.lose .letter-slot:not(.revealed) {
  animation: losePulse 1s ease-in-out infinite;
}

/* ========== Confetti ========== */
.confetti-piece {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  z-index: 300;
  pointer-events: none;
  animation: confettiFall 2.5s ease-in forwards;
}

@keyframes confettiFall {
  0% { opacity: 1; transform: translateY(0) rotate(0deg); }
  100% { opacity: 0; transform: translateY(100vh) rotate(720deg); }
}

/* ========== Responsive ========== */
@media (max-width: 480px) {
  .game-container {
    padding: 12px 10px;
    gap: 12px;
  }

  .game-header h1 {
    font-size: 1.4rem;
  }

  .stats-bar {
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
  }

  .stat {
    padding: 8px 4px;
  }

  .stat-label {
    font-size: 0.6rem;
  }

  .stat-value {
    font-size: 0.95rem;
  }

  .key-btn {
    width: 32px;
    height: 40px;
    font-size: 0.85rem;
  }

  .keyboard {
    gap: 4px;
  }

  .letter-slot {
    width: 28px;
    height: 38px;
    font-size: 1.2rem;
  }

  .canvas-wrapper {
    padding: 10px;
  }

  #hangman-canvas {
    width: 220px;
    height: 260px;
  }

  .cat-btn {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
}

@media (max-width: 360px) {
  .key-btn {
    width: 28px;
    height: 36px;
    font-size: 0.8rem;
  }

  .letter-slot {
    width: 24px;
    height: 34px;
    font-size: 1rem;
    gap: 4px;
  }

  .word-display {
    gap: 4px;
  }
}