/* game.css — Game screen: HUD, challenge area, timer, answer buttons, atmosphere */

/* ═══════════════════════════════════
   GAME SCREEN LAYOUT
   ═══════════════════════════════════ */
.screen--game {
  position: relative;
  padding: 0;
  overflow: hidden !important;
  height: 100%;
  max-height: 100%;
}

/* ── Dynamic atmosphere backgrounds ── */
.game-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.gbg {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.65s ease;
  pointer-events: none;
}
.gbg.active { opacity: 1; }

.gbg-color {
  background:
    radial-gradient(ellipse at 18% 30%, rgba(var(--pink-rgb), 0.30) 0%, transparent 55%),
    radial-gradient(ellipse at 82% 68%, rgba(var(--purple-rgb), 0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 52% 52%, rgba(var(--gold-rgb), 0.06) 0%, transparent 40%);
}

.gbg-math {
  background:
    radial-gradient(ellipse at 78% 28%, rgba(var(--cyan-rgb), 0.28) 0%, transparent 55%),
    radial-gradient(ellipse at 18% 72%, rgba(0,80,255,0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(0,200,255,0.07) 0%, transparent 40%);
}

.gbg-chain {
  background:
    radial-gradient(ellipse at 50% 22%, rgba(var(--gold-rgb), 0.28) 0%, transparent 55%),
    radial-gradient(ellipse at 78% 72%, rgba(var(--orange-rgb), 0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 24% 60%, rgba(255,160,0,0.10) 0%, transparent 40%);
}

.gbg-pattern {
  background:
    radial-gradient(ellipse at 28% 62%, rgba(var(--green-rgb), 0.26) 0%, transparent 55%),
    radial-gradient(ellipse at 72% 28%, rgba(0,200,100,0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 54% 50%, rgba(0,255,150,0.08) 0%, transparent 40%);
}

.gbg-word_scramble {
  background:
    radial-gradient(ellipse at 30% 40%, rgba(var(--purple-rgb), 0.26) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 60%, rgba(220,120,255,0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(160,80,255,0.07) 0%, transparent 40%);
}

.gbg-comparison {
  background:
    radial-gradient(ellipse at 25% 35%, rgba(0,200,200,0.26) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 65%, rgba(0,150,255,0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(0,180,220,0.07) 0%, transparent 40%);
}

.gbg-reaction {
  background:
    radial-gradient(ellipse at 50% 30%, rgba(var(--orange-rgb), 0.28) 0%, transparent 55%),
    radial-gradient(ellipse at 30% 70%, rgba(255,45,45,0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 50%, rgba(var(--gold-rgb), 0.08) 0%, transparent 40%);
}

.gbg-odd_one_out {
  background:
    radial-gradient(ellipse at 40% 30%, rgba(75,0,130,0.28) 0%, transparent 55%),
    radial-gradient(ellipse at 60% 70%, rgba(90,30,200,0.20) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(100,50,180,0.08) 0%, transparent 40%);
}

/* Ensure game children stay above bg */
.hud, .combo-badge, .challenge-area, .timer-ring, .answer-buttons, .countdown-overlay {
  position: relative;
  z-index: 1;
}

/* ═══════════════════════════════════
   HUD
   ═══════════════════════════════════ */
.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: clamp(8px, 1.5vh, 12px) 16px;
  background: linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.15) 100%);
  z-index: 20;
  flex-shrink: 0;
}

.hud-left {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1rem;
}

.heart-empty { opacity: 0.3; }

.hud-center {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hud-level {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.hud-progress {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 1px;
}

.hud-right {
  min-width: 48px;
  text-align: right;
}

.hud-score {
  font-size: 1.2rem;
  color: var(--gold);
  text-shadow: 0 0 8px rgba(var(--gold-rgb), 0.3);
}

.score-pop {
  animation: scoreBounce 0.3s ease;
}

/* ═══════════════════════════════════
   COMBO BADGE
   ═══════════════════════════════════ */
.combo-badge {
  position: absolute;
  top: 56px;
  right: 14px;
  font-size: 1.4rem;
  color: var(--gold);
  text-shadow: 0 0 12px rgba(var(--gold-rgb), 0.6);
  opacity: 0;
  pointer-events: none;
  z-index: 25;
  transition: opacity 0.2s;
}
.combo-badge.visible { opacity: 1; }
.combo-badge.combo-pop {
  animation: comboPop 0.35s ease;
}

/* ═══════════════════════════════════
   CHALLENGE AREA
   ═══════════════════════════════════ */
.challenge-area {
  flex: 1 1 0;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: clamp(8px, 2vh, 16px) 20px;
}

.flip-in {
  animation: flipIn 0.35s ease;
}

.challenge-instruction {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Stroop word */
.stroop-word {
  font-size: 3.2rem;
  text-transform: uppercase;
  letter-spacing: 5px;
  text-shadow: 0 0 30px currentColor;
  animation: stroopPulse 1.5s ease-in-out infinite;
}

/* Math equation */
.math-equation {
  font-size: 2.8rem;
  color: var(--text-primary);
  letter-spacing: 3px;
  text-shadow: 0 0 16px rgba(224,224,255,0.2);
}

/* Chain sequence */
.chain-show-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.chain-sequence {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.chain-num {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: rgba(var(--cyan-rgb), 0.12);
  border: 2px solid rgba(var(--cyan-rgb), 0.35);
  border-radius: 12px;
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(var(--cyan-rgb), 0.4);
  animation: chainNumIn 0.4s ease backwards;
}
.chain-num:nth-child(1) { animation-delay: 0s; }
.chain-num:nth-child(2) { animation-delay: 0.12s; }
.chain-num:nth-child(3) { animation-delay: 0.24s; }
.chain-num:nth-child(4) { animation-delay: 0.36s; }
.chain-num:nth-child(5) { animation-delay: 0.48s; }
.chain-num:nth-child(6) { animation-delay: 0.60s; }
.chain-num:nth-child(7) { animation-delay: 0.72s; }
.chain-num:nth-child(8) { animation-delay: 0.84s; }
.chain-num:nth-child(9) { animation-delay: 0.96s; }

.memorize-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  animation: memBlink 0.8s ease-in-out infinite;
}

.chain-selected {
  font-size: 1rem;
  color: var(--cyan);
  min-height: 28px;
  margin-bottom: 10px;
  text-shadow: 0 0 6px rgba(var(--cyan-rgb), 0.3);
}

.chain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 240px;
  width: 100%;
}

.grid-btn {
  width: 100%;
  aspect-ratio: 1;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: inherit;
  border: 2px solid rgba(var(--cyan-rgb), 0.35);
  border-radius: 12px;
  background: rgba(var(--cyan-rgb), 0.06);
  color: var(--cyan);
  cursor: pointer;
  transition: transform 0.1s, background 0.15s, box-shadow 0.2s;
}
.grid-btn:active { transform: scale(0.9); }
.grid-btn:hover { box-shadow: 0 0 12px rgba(var(--cyan-rgb), 0.25); }
.grid-btn.tapped {
  background: rgba(var(--cyan-rgb), 0.25);
  border-color: var(--cyan);
  opacity: 0.4;
  pointer-events: none;
  transform: scale(0.9);
}

/* Pattern grid */
.pattern-grid {
  display: grid;
  gap: 6px;
  max-width: 260px;
  width: 100%;
  margin: 0 auto;
}

.pattern-tile {
  aspect-ratio: 1;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle);
  transition: background 0.2s, transform 0.12s, box-shadow 0.2s;
}

.pattern-tile.active {
  background: var(--cyan);
  box-shadow: 0 0 16px rgba(var(--cyan-rgb), 0.6), inset 0 0 8px rgba(255,255,255,0.2);
  animation: tileFlash 0.4s ease backwards;
}

.pattern-tile.input-tile { cursor: pointer; }
.pattern-tile.input-tile:active { transform: scale(0.9); }
.pattern-tile.input-tile:hover { border-color: rgba(var(--cyan-rgb), 0.3); }

.pattern-tile.selected {
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(var(--cyan-rgb), 0.5);
  border-color: var(--cyan);
}

/* Word Scramble */
.scramble-word {
  font-size: 2.6rem;
  color: var(--purple);
  letter-spacing: 8px;
  text-transform: uppercase;
  text-shadow: 0 0 20px rgba(var(--purple-rgb), 0.5);
  animation: scramblePulse 1.5s ease-in-out infinite;
}

.scramble-btn {
  border-color: rgba(var(--purple-rgb), 0.3) !important;
  color: var(--purple) !important;
}
.scramble-btn:hover {
  box-shadow: 0 0 18px rgba(var(--purple-rgb), 0.3) !important;
}

/* Comparison */
.comparison-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  width: 100%;
}

.comparison-value {
  font-size: 2.4rem;
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(var(--cyan-rgb), 0.4);
  padding: 12px 20px;
  background: rgba(var(--cyan-rgb), 0.06);
  border: 1px solid rgba(var(--cyan-rgb), 0.2);
  border-radius: var(--radius-md);
  min-width: 80px;
  text-align: center;
}

.comparison-vs {
  font-size: 1.2rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.comparison-btn {
  border-color: rgba(0,200,200,0.3) !important;
  color: #00c8c8 !important;
  min-width: 120px !important;
}

/* Reaction Grid */
.reaction-grid {
  display: grid;
  gap: 8px;
  max-width: 280px;
  width: 100%;
  margin: 0 auto;
}

.reaction-cell {
  aspect-ratio: 1;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 2px solid var(--border-subtle);
  border-radius: 12px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  transition: transform 0.1s, box-shadow 0.2s, background 0.15s;
}
.reaction-cell:active { transform: scale(0.9); }
.reaction-cell:hover {
  box-shadow: 0 0 12px rgba(var(--orange-rgb), 0.3);
  background: var(--bg-surface-hover);
}

/* Odd One Out Grid */
.odd-grid {
  display: grid;
  gap: 10px;
  max-width: 260px;
  width: 100%;
  margin: 0 auto;
}

.odd-cell {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-subtle);
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
  min-height: 50px;
}
.odd-cell:active { transform: scale(0.9); }
.odd-cell:hover { box-shadow: 0 0 14px rgba(255,255,255,0.2); }

/* ═══════════════════════════════════
   ANSWER BUTTONS
   ═══════════════════════════════════ */
.answer-buttons {
  display: flex;
  gap: clamp(6px, 1.5vw, 10px);
  padding: clamp(8px, 1.5vh, 14px) 16px clamp(16px, 3vh, 28px);
  width: 100%;
  flex-wrap: wrap;
  justify-content: center;
  flex-shrink: 0;
}

.answer-btn {
  flex: 1 1 calc(50% - 10px);
  min-width: 80px;
  min-height: clamp(50px, 9vh, 70px);
  max-height: clamp(60px, 12vh, 90px);
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  font-weight: 700;
  font-family: inherit;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
  animation: btnSlideIn 0.3s ease backwards;
  position: relative;
  overflow: hidden;
}

.answer-btn:active { transform: scale(0.94); }
.answer-btn:hover {
  box-shadow: 0 0 18px rgba(var(--cyan-rgb), 0.25);
  transform: scale(1.03);
}

.color-btn:hover {
  box-shadow: 0 0 18px currentColor;
}

.done-btn {
  width: 100%;
  max-width: 220px;
  min-height: 52px;
  border-color: var(--green);
  color: var(--green);
  background: rgba(var(--green-rgb), 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
}
.done-btn:hover {
  box-shadow: 0 0 18px rgba(var(--green-rgb), 0.3);
}

/* ═══════════════════════════════════
   TIMER RING
   ═══════════════════════════════════ */
.timer-ring {
  position: relative;
  width: clamp(72px, 14vmin, 92px);
  height: clamp(72px, 14vmin, 92px);
  margin: clamp(6px, 1.5vh, 14px) auto clamp(6px, 1.5vh, 18px);
  flex-shrink: 0;
  pointer-events: none;
  z-index: 2;
  display: none;
  filter: drop-shadow(0 0 10px rgba(var(--cyan-rgb), 0.45));
  transition: filter 0.4s ease;
}

.timer-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

#timer-ring-bg {
  fill: none;
  stroke: rgba(255,255,255,0.07);
  stroke-width: 5;
}

#timer-ring-progress {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 5;
  stroke-linecap: round;
  transition: stroke 0.4s ease;
}

.timer-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--cyan);
  line-height: 1;
  pointer-events: none;
  transition: color 0.4s ease;
  font-family: inherit;
  letter-spacing: -1px;
}

/* ═══════════════════════════════════
   COUNTDOWN OVERLAY (3-2-1-GO)
   ═══════════════════════════════════ */
.countdown-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(10,10,26,0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 50;
}

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

.countdown-num {
  font-size: 5rem;
  color: var(--cyan);
  text-shadow: 0 0 40px rgba(var(--cyan-rgb), 0.6);
  transition: color 0.2s;
}

.countdown-anim {
  animation: cdPop 0.6s ease;
}

.countdown-go {
  color: var(--green);
  text-shadow: 0 0 40px rgba(var(--green-rgb), 0.6);
  animation: cdPop 0.6s ease;
}

/* ═══════════════════════════════════
   FEEDBACK
   ═══════════════════════════════════ */
.feedback {
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.5rem;
  font-weight: 700;
  pointer-events: none;
  z-index: 35;
  animation: feedbackFloat 0.9s ease forwards;
}

.feedback.correct {
  color: var(--green);
  text-shadow: 0 0 24px rgba(var(--green-rgb), 0.8);
}

.feedback.wrong {
  color: var(--pink);
  text-shadow: 0 0 24px rgba(var(--pink-rgb), 0.8);
}

.feedback.life-lost {
  font-size: 3.5rem;
  animation: heartShatter 0.9s ease forwards;
}

/* Screen shake */
.shake {
  animation: shakeIt 0.45s ease;
}