/* ══════════════════════════════════════════════
   QUIZ – STYLE.CSS
   Dark theme: bg #0F1117, surface #1A1D27, accent #305CDE
   ══════════════════════════════════════════════ */

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

:root {
  --bg:        #0F1117;
  --surface:   #1A1D27;
  --surface2:  #22263A;
  --accent:    #305CDE;
  --accent-h:  #4472FF;
  --danger:    #E03C3C;
  --success:   #27C770;
  --warn:      #F0A530;
  --neutral:   #3A3F55;
  --text:      #E8EAF6;
  --text-dim:  #7B82A8;
  --radius:    14px;
  --shadow:    0 4px 28px rgba(0,0,0,0.55);
  --transition:0.22s ease;
  --timer-circumference: 213.6px; /* 2*π*34 */
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 16px;
  overflow-x: hidden;
}

/* ── CONFETTI CANVAS ─────────────────────── */
#confetti-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* ── SCREENS ─────────────────────────────── */
.screen {
  display: none;
  min-height: 100vh;
  padding: 16px;
  justify-content: center;
  align-items: flex-start;
}
.screen.active { display: flex; }

/* ── CATEGORY SCREEN ─────────────────────── */
.cat-wrapper {
  width: 100%;
  max-width: 680px;
  padding-top: 20px;
}

.cat-header {
  text-align: center;
  margin-bottom: 24px;
}
.cat-logo { font-size: 3rem; margin-bottom: 8px; }
.cat-header h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.cat-subtitle {
  color: var(--text-dim);
  font-size: 0.92rem;
}

.best-scores-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
  min-height: 28px;
}
.best-score-chip {
  background: var(--surface2);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.78rem;
  color: var(--text-dim);
  white-space: nowrap;
}
.best-score-chip span { color: #FFD700; font-weight: 700; }

.pick-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-align: center;
  margin-bottom: 16px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}

.cat-card {
  background: var(--surface);
  border: 2px solid transparent;
  border-radius: var(--radius);
  padding: 22px 20px;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
}
.cat-card:hover {
  border-color: var(--accent);
  background: var(--surface2);
  transform: translateY(-2px);
}
.cat-card:active { transform: scale(0.97); }

.cat-emoji { font-size: 2.2rem; flex-shrink: 0; }
.cat-info  { flex: 1; }
.cat-name  { font-size: 1.05rem; font-weight: 700; margin-bottom: 3px; }
.cat-desc  { font-size: 0.8rem; color: var(--text-dim); }
.cat-qs    { font-size: 0.75rem; color: var(--accent); font-weight: 600; margin-top: 4px; }

/* ── QUESTION SCREEN ─────────────────────── */
.question-wrapper {
  width: 100%;
  max-width: 620px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 10px;
  position: relative;
}

/* HUD */
.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.hud-left { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.hud-cat  { font-size: 0.78rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.1em; }

.progress-bar-wrap {
  height: 5px;
  background: var(--surface2);
  border-radius: 4px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.4s ease;
  width: 0%;
}
.hud-progress { font-size: 0.78rem; color: var(--text-dim); }

.hud-right { display: flex; gap: 8px; flex-shrink: 0; }

.score-box, .streak-box {
  background: var(--surface);
  border-radius: 10px;
  padding: 6px 12px;
  text-align: center;
  min-width: 64px;
  border: 1px solid rgba(255,255,255,0.06);
}
.score-label, .streak-label {
  display: block;
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.score-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: #FFD700;
}
.streak-value {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: var(--warn);
  transition: transform 0.2s;
}
.streak-box.active .streak-value { color: var(--success); }

/* Timer */
.timer-container {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto;
  flex-shrink: 0;
}
.timer-svg { width: 80px; height: 80px; transform: rotate(-90deg); }
.timer-bg {
  fill: none;
  stroke: var(--surface2);
  stroke-width: 6;
}
.timer-ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: var(--timer-circumference);
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke var(--transition);
}
.timer-ring.warn  { stroke: var(--warn); }
.timer-ring.danger{ stroke: var(--danger); }
.timer-number {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.4rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

/* Question card */
.question-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: var(--shadow);
}
.q-number {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  margin-bottom: 8px;
}
.q-text {
  font-size: clamp(1rem, 3vw, 1.15rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

/* Answers */
.answers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
@media (max-width: 400px) {
  .answers-grid { grid-template-columns: 1fr; }
}

.answer-btn {
  background: var(--surface);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  font-size: clamp(0.88rem, 2.5vw, 0.95rem);
  font-weight: 500;
  line-height: 1.4;
  padding: 14px 16px;
  text-align: left;
  transition: border-color var(--transition), background var(--transition), transform 0.1s;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.answer-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--surface2);
  transform: translateY(-1px);
}
.answer-btn:active:not(:disabled) { transform: scale(0.97); }
.answer-btn:disabled { cursor: default; }

.answer-btn .answer-letter {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--surface2);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}

.answer-btn.correct {
  border-color: var(--success);
  background: rgba(39,199,112,0.14);
  animation: flashCorrect 0.5s ease;
}
.answer-btn.correct .answer-letter { background: var(--success); color: #000; }

.answer-btn.wrong {
  border-color: var(--danger);
  background: rgba(224,60,60,0.14);
  animation: flashWrong 0.5s ease;
}
.answer-btn.wrong .answer-letter { background: var(--danger); color: #fff; }

.answer-btn.eliminated {
  opacity: 0.2;
  pointer-events: none;
  transform: none;
}

@keyframes flashCorrect {
  0%  { transform: scale(1); }
  40% { transform: scale(1.03); }
  100%{ transform: scale(1); }
}
@keyframes flashWrong {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-6px); }
  40%     { transform: translateX(6px); }
  60%     { transform: translateX(-4px); }
  80%     { transform: translateX(4px); }
}

/* Lifeline */
.lifeline-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.btn-lifeline {
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: 10px;
  color: var(--accent);
  cursor: pointer;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 16px;
  transition: background var(--transition), opacity var(--transition);
}
.btn-lifeline:hover:not(:disabled) { background: rgba(48,92,222,0.15); }
.btn-lifeline:disabled { opacity: 0.3; cursor: not-allowed; border-color: var(--neutral); color: var(--neutral); }
.lifeline-icon  { font-size: 0.95rem; font-weight: 800; }
.lifeline-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; }
.lifeline-used-msg { font-size: 0.8rem; color: var(--text-dim); flex: 1; }

/* Feedback overlay */
.feedback-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.2s;
  border-radius: 0;
}
.feedback-overlay.show-correct {
  background: rgba(39,199,112,0.12);
  opacity: 1;
  animation: feedbackFade 0.6s ease forwards;
}
.feedback-overlay.show-wrong {
  background: rgba(224,60,60,0.12);
  opacity: 1;
  animation: feedbackFade 0.6s ease forwards;
}
@keyframes feedbackFade {
  0%   { opacity: 1; }
  100% { opacity: 0; }
}

/* ── RESULT SCREEN ───────────────────────── */
.result-wrapper {
  width: 100%;
  max-width: 480px;
  text-align: center;
  padding-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.result-trophy { font-size: 4rem; }
.result-title  { font-size: clamp(1.6rem, 5vw, 2.2rem); font-weight: 800; letter-spacing: -0.02em; }
.result-score-big {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 900;
  color: #FFD700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}
.result-stats {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px 24px;
  width: 100%;
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 2;
  border: 1px solid rgba(255,255,255,0.06);
}
.result-stats strong { color: var(--text); }
.result-best {
  font-size: 0.88rem;
  color: var(--text-dim);
}
.result-best strong { color: #FFD700; }

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

/* ── BUTTONS ─────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 24px;
  transition: background var(--transition), transform 0.1s, opacity var(--transition);
  user-select: none;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; pointer-events: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-ghost   { background: var(--surface); color: var(--text-dim); border: 1px solid rgba(255,255,255,0.1); }
.btn-ghost:hover { background: var(--surface2); }
.btn-block   { width: 100%; }

/* ── SCORE ANIMATION ─────────────────────── */
@keyframes scorePopup {
  0%   { opacity: 0; transform: translateY(0) scale(0.8); }
  40%  { opacity: 1; transform: translateY(-30px) scale(1.2); }
  100% { opacity: 0; transform: translateY(-60px) scale(1); }
}
.score-popup {
  position: fixed;
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFD700;
  pointer-events: none;
  z-index: 200;
  animation: scorePopup 1.2s ease forwards;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

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

/* Responsive */
@media (max-width: 480px) {
  .cat-wrapper, .question-wrapper, .result-wrapper { padding-top: 8px; }
  .hud { flex-wrap: wrap; }
  .timer-container { width: 64px; height: 64px; }
  .timer-svg { width: 64px; height: 64px; }
  .timer-number { font-size: 1.1rem; }
}