/* ============================================================
   GAME.CSS — Guess the AI Term Quiz Game
   ============================================================ */

.page-hero {
  padding-bottom: 2rem;
}
.page-hero .section-title {
  text-align: left;
}
.game-section {
  max-width: 760px;
  margin: 0 auto;
}

/* ── Screens ─────────────────────────────────────────────────── */
.game-screen {
  width: 100%;
}
.game-screen.hidden {
  display: none !important;
}

/* ── Start / Game-Over Card ──────────────────────────────────── */
.game-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius2);
  padding: clamp(2rem, 5vw, 3rem);
  text-align: center;
  box-shadow: var(--shadow2);
}
.gc-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  display: block;
}
.gc-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--white);
  margin-bottom: 0.75rem;
}
.gc-sub {
  color: var(--text2);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

/* Rules grid */
.rules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.rule-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text2);
}
.rule-icon {
  font-size: 1.1rem;
}

/* Difficulty selector */
.difficulty-selector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.ds-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text3);
  letter-spacing: 1px;
}
.ds-btns {
  display: flex;
  gap: 0.4rem;
}
.ds-btn {
  padding: 0.4rem 1rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text2);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ds-btn:hover {
  color: var(--accent);
  border-color: var(--border2);
}
.ds-btn.active {
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent);
  border-color: var(--accent);
}

/* ── HUD ─────────────────────────────────────────────────────── */
.game-hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
}
.hud-left {
  display: flex;
  gap: 1.5rem;
  justify-content: flex-start;
}
.hud-right {
  display: flex;
  gap: 1.5rem;
  justify-content: flex-end;
}
.hud-center {
  display: flex;
  justify-content: center;
}
.hud-item {
  text-align: center;
}
.hud-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 0.2rem;
}
.hud-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--white);
  font-weight: 700;
}

/* Timer ring */
.timer-wrap {
  position: relative;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.timer-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.timer-bg {
  fill: none;
  stroke: var(--border);
  stroke-width: 3;
}
.timer-ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  transition:
    stroke-dashoffset 1s linear,
    stroke 0.3s;
}
.timer-ring.warn {
  stroke: var(--warning);
}
.timer-ring.danger {
  stroke: var(--danger);
}
.timer-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--white);
  z-index: 1;
  font-weight: 700;
}
.timer-num.warn {
  color: var(--warning);
}
.timer-num.danger {
  color: var(--danger);
}

/* Progress bar */
.q-progress-wrap {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}
.q-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px;
  transition: width 0.4s ease;
}

/* Category + difficulty */
.q-category-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.q-diff-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  background: rgba(255, 165, 2, 0.1);
  color: var(--warning);
  border: 1px solid rgba(255, 165, 2, 0.25);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Question card */
.question-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius2);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.3s;
}
.question-text {
  font-size: clamp(1rem, 2.5vw, 1.18rem);
  color: var(--white);
  line-height: 1.75;
  font-family: var(--font-body);
}
.q-hint {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius);
  padding: 0.6rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
}
.q-hint svg {
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.hint-cost {
  font-size: 0.65rem;
  color: var(--text3);
}

/* Options */
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.option-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  cursor: pointer;
  text-align: left;
  line-height: 1.45;
  transition: all 0.2s ease;
  width: 100%;
}
.option-btn:hover:not(:disabled) {
  border-color: var(--border2);
  background: var(--surface);
  color: var(--white);
  transform: translateY(-2px);
}
.option-btn:disabled {
  cursor: not-allowed;
}

.option-letter {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  flex-shrink: 0;
  background: var(--border);
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: all 0.2s;
}
.option-btn:hover:not(:disabled) .option-letter {
  background: var(--accent);
  color: var(--bg);
}

/* Answer states */
.option-btn.correct {
  background: rgba(0, 255, 159, 0.08) !important;
  border-color: var(--accent2) !important;
  color: var(--accent2) !important;
  animation: correct-pulse 0.4s ease;
}
.option-btn.correct .option-letter {
  background: var(--accent2);
  color: var(--bg);
}
.option-btn.wrong {
  background: rgba(255, 71, 87, 0.08) !important;
  border-color: var(--danger) !important;
  color: var(--danger) !important;
  animation: wrong-shake 0.4s ease;
}
.option-btn.wrong .option-letter {
  background: var(--danger);
  color: var(--white);
}

@keyframes correct-pulse {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.03);
  }
  100% {
    transform: scale(1);
  }
}
@keyframes wrong-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  75% {
    transform: translateX(6px);
  }
}

/* Bottom row */
.game-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ── Feedback Screen ──────────────────────────────────────────── */
.feedback-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius2);
  padding: 2.5rem;
  text-align: center;
  animation: fade-up 0.35s ease;
}
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fb-result-icon {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
  display: block;
  line-height: 1;
}
.fb-result-text {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
}
.fb-result-text.correct {
  color: var(--accent2);
}
.fb-result-text.wrong {
  color: var(--danger);
}
.fb-result-text.timeout {
  color: var(--warning);
}

.fb-term {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  background: rgba(0, 212, 255, 0.07);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius);
  padding: 0.5rem 1.25rem;
  display: inline-block;
  margin-bottom: 1rem;
  letter-spacing: 1px;
}
.fb-explanation {
  color: var(--text2);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 480px;
  margin: 0 auto 0.75rem;
}
.fb-points {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text3);
}
.fb-points span {
  color: var(--accent2);
  font-size: 1.1rem;
}

/* ── Game Over Screen ────────────────────────────────────────── */
.gameover-card {
  text-align: center;
}
.go-result {
  margin-bottom: 2rem;
}
.go-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 0.75rem;
}
.go-title {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 0.4rem;
}
.go-subtitle {
  color: var(--text2);
}

/* Score display */
.score-display {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius2);
  padding: 2rem;
  margin-bottom: 1.5rem;
}
.sd-main {
  margin-bottom: 1.5rem;
}
.sd-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(3rem, 8vw, 5rem);
  color: var(--accent);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.3rem;
}
.sd-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text3);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.sd-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.sd-stat {
  text-align: center;
}
.sd-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.sd-stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Rank badge */
.rank-badge {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius2);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  text-align: left;
}
.rb-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}
.rb-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 0.25rem;
}
.rb-sub {
  font-size: 0.85rem;
  color: var(--text2);
}

/* Missed review */
.missed-section {
  margin-bottom: 1.5rem;
  text-align: left;
}
.missed-heading {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text3);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.missed-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.missed-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}
.mi-term {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  min-width: 160px;
  flex-shrink: 0;
}
.mi-def {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.5;
}

.go-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* Leaderboard tease */
.leaderboard-tease {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  flex-wrap: wrap;
}
.lt-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}
.leaderboard-tease h4 {
  font-size: 1rem;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.leaderboard-tease p {
  font-size: 0.85rem;
  color: var(--text2);
}
.leaderboard-tease .btn {
  margin-left: auto;
}

/* Correct flash on question card */
.question-card.flash-correct {
  border-color: var(--accent2) !important;
}
.question-card.flash-wrong {
  border-color: var(--danger) !important;
}

/* Responsive */
@media (max-width: 600px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
  .game-hud {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }
  .hud-center {
    grid-column: 1 / -1;
    order: -1;
  }
  .sd-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .rules-grid {
    grid-template-columns: 1fr;
  }
}