/* ═══════════════════════════════════════
   FBTI — Mobile First Stylesheet
   Base: 375px | Tablet: 768px | Desktop: 1024px
   ═══════════════════════════════════════ */

:root {
  --bg:        #0D1117;
  --bg2:       #161B22;
  --bg3:       #21262D;
  --border:    rgba(255,255,255,0.08);
  --text:      #F0F6FC;
  --text-dim:  #8B949E;
  --text-mute: #484F58;
  --gold:      #F4C542;
  --gold-dim:  rgba(244,197,66,0.15);
  --radius:    16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --trans:     0.25s ease;
}

/* ─── Reset ──────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, 'PingFang SC', 'SF Pro Text', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; outline: none; -webkit-tap-highlight-color: transparent; }

/* ─── Views ──────────────────────────── */
.view { display: none; min-height: 100vh; }
.view.active { display: flex; flex-direction: column; }

/* ─── Layout ─────────────────────────── */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ═══════════════════════════════════════
   LANDING
   ═══════════════════════════════════════ */
#view-landing {
  background: var(--bg);
  align-items: center;
  justify-content: space-between;
  padding: env(safe-area-inset-top, 20px) 0 env(safe-area-inset-bottom, 20px);
}

.landing-inner {
  width: 100%;
  max-width: 480px;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.brand-tag {
  margin-top: 52px;
  font-size: 11px;
  letter-spacing: 5px;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.landing-title {
  font-size: 30px;
  font-weight: 800;
  text-align: center;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.landing-title .highlight { color: var(--gold); }

.landing-sub1 {
  font-size: 14px;
  color: var(--text-dim);
  text-align: center;
  margin-bottom: 6px;
  font-style: italic;
}

.landing-sub2 {
  font-size: 13px;
  color: var(--text-mute);
  text-align: center;
  letter-spacing: 2px;
  margin-bottom: 40px;
}

/* Floating tags */
.float-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 44px;
  padding: 0 8px;
}

.float-tag {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 12px;
  border-radius: 20px;
  animation: float-in 0.6s ease both;
}

.float-tag.gold { color: var(--gold); border-color: rgba(244,197,66,0.3); }

@keyframes float-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* CTA Button */
.btn-primary {
  width: 100%;
  height: 58px;
  background: var(--gold);
  color: #0D1117;
  font-size: 17px;
  font-weight: 800;
  border-radius: var(--radius);
  letter-spacing: 1px;
  transition: transform var(--trans), box-shadow var(--trans);
  margin-bottom: 20px;
}

.btn-primary:active {
  transform: scale(0.97);
  box-shadow: 0 0 0 4px rgba(244,197,66,0.25);
}

.trust-text {
  font-size: 12px;
  color: var(--text-mute);
  text-align: center;
  margin-bottom: 16px;
}

.disclaimer {
  font-size: 11px;
  color: var(--text-mute);
  text-align: center;
  padding-bottom: 20px;
  opacity: 0.6;
}

/* ═══════════════════════════════════════
   QUIZ
   ═══════════════════════════════════════ */
#view-quiz {
  background: var(--bg);
  justify-content: flex-start;
}

.quiz-header {
  padding: calc(env(safe-area-inset-top, 0px) + 16px) 20px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
}

.btn-prev {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 20px;
  line-height: 1;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--trans);
}
.btn-prev:active { background: var(--bg3); color: var(--text); }

.progress-track {
  flex: 1;
  height: 3px;
  background: var(--bg3);
  border-radius: 2px;
  overflow: hidden;
}

#progress-bar {
  height: 100%;
  background: var(--gold);
  border-radius: 2px;
  transition: width 0.4s ease;
}

#q-num {
  font-size: 12px;
  color: var(--text-mute);
  min-width: 36px;
  text-align: right;
  letter-spacing: 1px;
}

#quiz-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
  padding: 8px 20px 32px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

#quiz-card.slide-out {
  transform: translateX(-24px);
  opacity: 0;
}
#quiz-card.slide-back {
  transform: translateX(24px);
  opacity: 0;
}

.special-badge {
  display: none;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gold);
  margin-bottom: 16px;
  background: var(--gold-dim);
  padding: 6px 12px;
  border-radius: 20px;
  width: fit-content;
  border: 1px solid rgba(244,197,66,0.3);
}

#question-text {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 32px;
  transition: opacity 0.25s ease;
  flex-shrink: 0;
}

#options-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.option-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-align: left;
  transition: all 0.2s ease;
  min-height: 64px;
  animation: opt-in 0.3s ease both;
}

@keyframes opt-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.option-btn:active {
  transform: scale(0.98);
  border-color: var(--gold);
  background: rgba(244,197,66,0.08);
}

.option-btn.selected {
  border-color: var(--gold);
  background: rgba(244,197,66,0.1);
}

.opt-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  background: var(--gold-dim);
  border-radius: 6px;
  padding: 3px 8px;
  flex-shrink: 0;
  letter-spacing: 1px;
}

.opt-text {
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
}

/* ═══════════════════════════════════════
   LOADING
   ═══════════════════════════════════════ */
#view-loading {
  background: var(--bg);
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.loading-ring {
  width: 72px;
  height: 72px;
  border: 3px solid var(--bg3);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#loading-text {
  font-size: 15px;
  color: var(--text-dim);
  text-align: center;
  transition: opacity 0.2s ease;
  letter-spacing: 1px;
}

/* ═══════════════════════════════════════
   RESULT
   ═══════════════════════════════════════ */
#view-result {
  background: var(--bg);
  align-items: center;
}

.result-inner {
  width: 100%;
  max-width: 480px;
  padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 32px);
}

/* Result header card */
#res-header {
  width: 100%;
  padding: calc(env(safe-area-inset-top, 0px) + 40px) 28px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 340px;
  justify-content: center;
}

#res-header::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
}

#res-header::after {
  content: '';
  position: absolute;
  bottom: -40px; left: -40px;
  width: 150px; height: 150px;
  border-radius: 50%;
  background: rgba(0,0,0,0.1);
}

/* Result image wrapper — full square, shows original image with its text */
#res-img-wrap {
  width: 240px;
  height: 240px;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  margin: 0 auto 22px;
  border: 2px solid rgba(255,255,255,0.15);
  z-index: 1;
  flex-shrink: 0;
}

#res-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

#res-code {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 5px;
  margin-bottom: 6px;
  position: relative; z-index: 1;
}

#res-name {
  font-size: 32px;
  font-weight: 900;
  margin-bottom: 4px;
  position: relative; z-index: 1;
  letter-spacing: -1px;
}

#res-en {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
  position: relative; z-index: 1;
  letter-spacing: 1px;
}

#res-quote {
  font-size: 15px;
  font-style: italic;
  color: rgba(255,255,255,0.8);
  position: relative; z-index: 1;
  line-height: 1.6;
  max-width: 280px;
}

#easter-badge {
  display: none;
  background: rgba(138,201,38,0.15);
  border: 1px solid rgba(138,201,38,0.4);
  color: #8AC926;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  margin-top: 12px;
  position: relative; z-index: 1;
}

/* Result sections */
.res-section {
  margin: 0 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.res-section:last-of-type { border-bottom: none; }

.sec-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 12px;
}

#res-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

#res-strengths, #res-weaknesses {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#res-strengths li::before { content: '✅  '; }
#res-weaknesses li::before { content: '⚠️  '; }
#res-strengths li, #res-weaknesses li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
}

.said-line {
  font-size: 14px;
  color: var(--text-dim);
  font-style: italic;
  padding: 8px 12px;
  border-left: 2px solid var(--gold);
  background: var(--gold-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 6px;
  line-height: 1.6;
}

/* Dimensions */
.dim-chart { display: flex; flex-direction: column; gap: 12px; }
.dim-row { display: flex; align-items: center; gap: 10px; }
.dim-lbl {
  font-size: 11px;
  color: var(--text-mute);
  letter-spacing: 1px;
  flex-shrink: 0;
}
.lbl-left { width: 28px; text-align: right; }
.lbl-right { width: 28px; }
.dim-track {
  flex: 1;
  height: 6px;
  background: var(--bg3);
  border-radius: 3px;
  overflow: hidden;
}
.dim-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s ease;
}

.info-row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin-bottom: 8px;
}
.info-icon { font-size: 16px; flex-shrink: 0; margin-top: 2px; }
.info-text { font-size: 14px; color: var(--text-dim); line-height: 1.6; }

/* Author card */
.author-card {
  margin: 0 20px;
  padding: 24px 0 4px;
  border-top: 1px solid var(--border);
}

.author-intro {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
  text-align: center;
}

.author-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.author-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
}

.author-link-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text);
  font-size: 14px;
}

a.author-link:active { color: var(--text); }

/* Result actions */
.res-actions {
  padding: 20px 20px 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-retest {
  width: 100%;
  height: 48px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 14px;
  border-radius: var(--radius);
  transition: border-color var(--trans);
}
.btn-retest:active { border-color: var(--text-dim); }


/* ═══════════════════════════════════════
   RESPONSIVE — Desktop
   ═══════════════════════════════════════ */
@media (min-width: 768px) {
  .landing-title { font-size: 36px; }
  #question-text { font-size: 22px; }
  .option-btn { padding: 18px 22px; min-height: 68px; }
  #res-name { font-size: 38px; }
  #res-img-wrap { width: 260px; height: 260px; }
  #res-img { width: 100%; height: 100%; }
}

/* ═══════════════════════════════════════
   UTILS
   ═══════════════════════════════════════ */
.mt-auto { margin-top: auto; }