/* ============================================================
   CBTI — Crypto Behavioral Type Indicator
   Styles: Dark crypto theme, card-based, mobile-first
   ============================================================ */

:root {
  --bg: #0F172A;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-solid: #1E293B;
  --bg-card-hover: #263450;
  --border: rgba(148, 163, 184, 0.12);
  --border-accent: rgba(0, 212, 170, 0.25);
  --text: #F1F5F9;
  --text-dim: #94A3B8;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --gold: #F59E0B;
  --gold-dim: rgba(245, 158, 11, 0.15);
  --red: #EF4444;
  --orange: #F97316;
  --yellow: #FBBF24;
  --blue: #3B82F6;
  --purple: #8B5CF6;
  --green: #10B981;
  --font: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 680px;
  --blur: 12px;
  --transition: 200ms cubic-bezier(0.25, 0, 0, 1);
  --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.15);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .landing-title, .persona-code, .section-title, .btn-start, .btn-nav {
  font-family: var(--font);
}

/* ── Screens ── */
.screen { display: none; }
.screen.active { display: flex; flex-direction: column; align-items: center; min-height: 100vh; }

/* ── Landing ── */
#landing {
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.landing-card {
  max-width: var(--max-width);
  width: 100%;
}

.landing-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--blue) 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.landing-subtitle {
  font-size: clamp(1rem, 3vw, 1.3rem);
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  font-weight: 400;
}

.landing-tagline {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-top: 2rem;
  opacity: 0.7;
}

.landing-tagline a {
  color: var(--accent);
  text-decoration: none;
}

.btn-start {
  display: inline-block;
  padding: 1rem 3rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent), #00b890);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn-start::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn-start:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 212, 170, 0.3);
}

.btn-start:hover::after {
  transform: translateX(100%);
}

/* ── Quiz ── */
#quiz {
  padding: 1rem;
}

.quiz-container {
  max-width: var(--max-width);
  width: 100%;
  padding: 1rem 0;
}

.quiz-header-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  padding: 1rem 0 0.5rem;
}

.progress-bar-wrap {
  display: flex;
  align-items: center;
}

.progress-bar-track {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0%;
}

.quiz-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
}

.progress-text {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.page-indicator {
  font-size: 0.8rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
}

.question-card {
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: all var(--transition);
}

.question-card.answered {
  border-color: var(--border-accent);
  box-shadow: 0 0 0 1px var(--accent-dim);
}

.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.question-num {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.question-dim {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.question-text {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.question-text-en {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.option-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  color: var(--text);
  font-size: 0.9rem;
  transition: all var(--transition);
  line-height: 1.4;
}

.option-btn:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.option-btn.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: inset 0 0 0 1px var(--accent), var(--shadow-glow);
}

.option-label {
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
  min-width: 1.2rem;
  flex-shrink: 0;
}

.option-text-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.option-text-en {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ── Quiz Nav ── */
.quiz-nav {
  display: flex;
  gap: 0.75rem;
  padding: 1.5rem 0 2rem;
}

.btn-nav {
  flex: 1;
  padding: 0.9rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

.btn-prev {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.btn-prev:hover {
  border-color: var(--accent);
  color: var(--text);
}

.btn-next {
  background: var(--accent);
  color: var(--bg);
}

.btn-next:hover {
  box-shadow: 0 4px 16px var(--accent-dim);
  transform: translateY(-1px);
}

.btn-next.disabled {
  opacity: 0.3;
  pointer-events: none;
  transform: none;
  box-shadow: none;
}

/* ── Page transition ── */
@keyframes cardFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

#questions-list.page-enter .question-card {
  animation: cardFadeUp 0.35s cubic-bezier(0.25, 0, 0, 1) backwards;
}
#questions-list.page-enter .question-card:nth-child(1) { animation-delay: 0s; }
#questions-list.page-enter .question-card:nth-child(2) { animation-delay: 0.06s; }
#questions-list.page-enter .question-card:nth-child(3) { animation-delay: 0.12s; }
#questions-list.page-enter .question-card:nth-child(4) { animation-delay: 0.18s; }

/* ── Result ── */
#result {
  padding: 2rem 1rem;
}

.result-container {
  max-width: var(--max-width);
  width: 100%;
}

.result-persona-card {
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.result-persona-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--blue), var(--purple), var(--gold));
  background-size: 200% 100%;
  animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Result reveal animation */
@keyframes resultReveal {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

#result .result-persona-card { animation: resultReveal 0.5s cubic-bezier(0.25, 0, 0, 1) 0s backwards; }
#result .actions-primary { animation: resultReveal 0.4s cubic-bezier(0.25, 0, 0, 1) 0.15s backwards; }
#result .result-desc-card { animation: resultReveal 0.4s cubic-bezier(0.25, 0, 0, 1) 0.25s backwards; }
#result .scatter-section { animation: resultReveal 0.4s cubic-bezier(0.25, 0, 0, 1) 0.35s backwards; }
#result .dims-section { animation: resultReveal 0.4s cubic-bezier(0.25, 0, 0, 1) 0.45s backwards; }
#result .actions-secondary { animation: resultReveal 0.4s cubic-bezier(0.25, 0, 0, 1) 0.55s backwards; }
#result .tips-section { animation: resultReveal 0.4s cubic-bezier(0.25, 0, 0, 1) 0.65s backwards; }

.persona-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.3rem 1rem;
  border-radius: 20px;
  margin-bottom: 1rem;
}

.persona-hero {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
}

.persona-meme {
  width: 110px;
  height: 110px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 2px solid var(--border-accent);
  background: var(--bg);
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
  transition: transform 0.3s;
}

.persona-meme:hover {
  transform: scale(1.05);
}

.persona-identity {
  text-align: left;
}

.persona-code {
  font-size: clamp(2.2rem, 7vw, 3.2rem);
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.persona-cn {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 0.15rem;
}

.persona-en-label {
  font-size: 0.95rem;
  color: var(--text-dim);
  margin-top: 0.1rem;
}

.persona-intro {
  font-size: 1rem;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 0.25rem;
  text-align: center;
}

.persona-intro-sub {
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.result-desc-card {
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 2rem;
}

.persona-desc {
  font-size: 0.95rem;
  line-height: 1.75;
  text-align: left;
  margin-bottom: 1.25rem;
}

.persona-desc-en {
  font-size: 0.85rem;
  line-height: 1.65;
  text-align: left;
  color: var(--text-dim);
}

/* ── Scatter Plot ── */
.scatter-section {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.scatter-wrap {
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.scatter-plot {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 400px;
  margin: 0 auto;
}

.scatter-canvas {
  width: 100%;
  height: 100%;
}

.scatter-legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
  font-size: 0.8rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-dot.smart-money { background: var(--green); }
.legend-dot.diamond-degen { background: var(--purple); }
.legend-dot.rotating-andy { background: var(--yellow); }
.legend-dot.gambler { background: var(--red); }

/* ── Dimension Scores ── */
.dims-section {
  margin-bottom: 2rem;
}

.dim-group {
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  transition: border-color var(--transition);
}

.dim-group:hover {
  border-color: var(--border-accent);
}

.dim-group-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.dim-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.dim-row:last-child { margin-bottom: 0; }

.dim-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  min-width: 100px;
  font-family: var(--font-mono);
}

.dim-bar-track {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.dim-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
}

.dim-level {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 700;
  min-width: 1.5rem;
  text-align: center;
}

.dim-level.H { color: var(--green); }
.dim-level.M { color: var(--yellow); }
.dim-level.L { color: var(--red); }

/* ── Share / Actions ── */
.actions-section {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.actions-primary {
  margin-bottom: 2rem;
}

.actions-primary .btn-share {
  flex: 2;
}

.actions-secondary {
  margin-bottom: 1rem;
}

.btn-action {
  flex: 1;
  min-width: 140px;
  padding: 0.9rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  border: none;
}

.btn-share {
  background: var(--accent);
  color: var(--bg);
}

.btn-share:hover {
  box-shadow: 0 4px 16px var(--accent-dim);
}

.btn-copy {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--accent);
}

.btn-copy:hover {
  background: var(--accent-dim);
}

.btn-retry {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-retry:hover {
  border-color: var(--accent);
}

/* ── Landing Credit ── */
.landing-credit {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.landing-credit a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.landing-credit a:hover { text-decoration: underline; }

/* ── Tips ── */
.tips-section {
  text-align: center;
  padding: 1.5rem;
  margin-bottom: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.tips-label {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.tips-address {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s;
  max-width: 100%;
  overflow: hidden;
}

.tips-address:hover { border-color: var(--accent); }

.tips-chain {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--bg);
  background: var(--accent);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  flex-shrink: 0;
}

.tips-address code {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tips-copy {
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
}

.tips-credit {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.tips-credit a {
  color: var(--accent);
  text-decoration: none;
}

.tips-credit a:hover { text-decoration: underline; }

/* ── Responsive ── */

/* Tablets */
@media (max-width: 768px) {
  #landing { padding: 1.5rem; }
  #result { padding: 1.5rem 0.75rem; }
  .result-persona-card { padding: 1.5rem; }
  .actions-section { flex-direction: column; }
  .btn-action { min-width: 100%; }
}

/* Phones */
@media (max-width: 480px) {
  body { font-size: 15px; }

  /* Landing */
  #landing { padding: 1rem; }
  .landing-title { font-size: 1.8rem; }
  .landing-subtitle { font-size: 0.95rem; margin-bottom: 1.5rem; }
  .btn-start { padding: 0.85rem 2rem; font-size: 1.05rem; width: 100%; }

  /* Quiz */
  #quiz { padding: 0.5rem; }
  .quiz-container { padding: 0; }
  .quiz-header-bar { padding: 0.75rem 0.25rem 0.4rem; }
  .question-card { padding: 1rem; margin-bottom: 0.75rem; }
  .question-text { font-size: 0.95rem; }
  .question-text-en { font-size: 0.8rem; }
  .option-btn { padding: 0.7rem 0.75rem; font-size: 0.85rem; }
  .option-text-en { font-size: 0.75rem; }
  .question-header { margin-bottom: 0.75rem; }
  .quiz-nav { padding: 1rem 0; }
  .btn-nav { padding: 0.85rem 1rem; font-size: 0.95rem; }

  /* Result card */
  #result { padding: 1rem 0.5rem; }
  .result-persona-card { padding: 1.25rem; }
  .persona-hero { gap: 1rem; }
  .persona-meme { width: 80px; height: 80px; border-radius: 12px; }
  .persona-code { font-size: 1.8rem; }
  .persona-cn { font-size: 1.2rem; }
  .persona-en-label { font-size: 0.85rem; }
  .persona-intro { font-size: 0.9rem; }
  .persona-desc { font-size: 0.88rem; line-height: 1.65; }
  .persona-desc-en { font-size: 0.8rem; }

  /* Scatter */
  .scatter-wrap { padding: 1rem; }
  .scatter-legend { grid-template-columns: 1fr; font-size: 0.75rem; }

  /* Dimensions */
  .dim-group { padding: 1rem; }
  .dim-label { font-size: 0.65rem; min-width: 80px; }
  .dim-bar-track { height: 6px; }

  /* Actions */
  .actions-section { flex-direction: column; gap: 0.5rem; }
  .btn-action { min-width: 100%; padding: 0.85rem; }

  /* Tips */
  .tips-section { padding: 1rem; }
  .tips-address { flex-wrap: wrap; justify-content: center; }
  .tips-address code { font-size: 0.6rem; }
}