/* ===== CTA BUTTON (Design Kit §7-1) ===== */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-gradient);
  color: var(--season-text-on-gradient);
  border: none;
  padding: 16px 36px;
  border-radius: var(--radius-full);
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: var(--text-md);
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s var(--ease-out-3),
              box-shadow 0.18s var(--ease-out-3);
  box-shadow: var(--shadow-3);
  min-height: 52px;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-4);
}

.cta-btn:active {
  transform: translateY(0) scale(0.97);
}

/* ===== TRACK BUTTONS ===== */
.intro-tracks {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 360px;
  margin-bottom: 8px;
}

.track-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px 22px;
  background: var(--bg-card);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s var(--ease-out-3);
  text-align: left;
  font-family: 'Be Vietnam Pro', sans-serif;
  position: relative;
  overflow: hidden;
  min-height: 56px;
}

.track-btn:hover {
  border-color: var(--brand-gold);
  box-shadow: var(--shadow-3);
  transform: translateY(-2px);
}

.track-ai {
  border-color: var(--brand-rose);
  background: var(--brand-rose-light);
}

.track-ai:hover {
  border-color: var(--brand-rose);
  background: #FFE4EA;
}

.track-quiz:hover {
  border-color: var(--brand-gold);
  background: var(--brand-gold-light);
}

.track-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.track-label {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.track-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  display: block;
}

.track-badge {
  position: absolute;
  top: 10px;
  right: 12px;
  background: var(--brand-gradient);
  color: var(--season-text-on-gradient);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  letter-spacing: .5px;
}

/* ===== BACK BUTTON ===== */
.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 2px solid var(--border-default);
  border-radius: 50%;
  cursor: pointer;
  transition: all .2s var(--ease-out-3);
  flex-shrink: 0;
}

.back-btn:hover:not(:disabled) {
  border-color: var(--brand-gold);
  color: var(--brand-gold);
}

.back-btn:disabled {
  opacity: .3;
  cursor: default;
}

/* ===== PROGRESS BAR (Design Kit §7-4) ===== */
.progress-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border-default);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--brand-gradient);
  border-radius: var(--radius-full);
  transition: width 0.5s var(--ease-out-5);
  width: 0%;
}

.progress-text {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
  text-align: right;
}

/* ===== OPTION BUTTON (Design Kit §7-1) ===== */
.option-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.15s var(--ease-out-3),
              border-color 0.15s,
              background 0.15s,
              box-shadow 0.15s;
  text-align: left;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: var(--text-base);
  color: var(--text-primary);
  line-height: 1.4;
  min-height: 56px;
}

.option-btn:hover {
  border-color: var(--brand-gold);
  background: var(--brand-gold-light);
}

.option-btn:active {
  transform: scale(0.97);
}

.option-btn.selected {
  border-color: var(--brand-rose);
  background: var(--brand-rose-light);
  box-shadow: 0 0 0 3px rgba(212,118,138,0.15);
  transform: scale(1.01);
}

.option-btn:disabled {
  pointer-events: none;
}

.option-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--brand-gold-light);
  border-radius: 50%;
  font-weight: 700;
  font-size: 14px;
  color: var(--brand-gold);
  flex-shrink: 0;
}

.option-btn.selected .option-letter {
  background: var(--brand-rose);
  color: var(--season-text-on-gradient);
}

/* ===== CARD (Design Kit §7-2) ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-2);
}

.card-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 20px;
}

/* ===== BADGES ===== */
.intro-badge {
  display: inline-block;
  background: var(--brand-gradient);
  color: var(--season-text-on-gradient);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  letter-spacing: .5px;
  margin-bottom: 24px;
}

.result-badge {
  display: inline-block;
  background: var(--season-gradient);
  color: var(--season-text-on-gradient);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}

/* ===== SEASON CHIPS (Design Kit §6-2) ===== */
.season-chip {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
}

.spring-chip { background: #FFF5E6; color: #D4880F; }
.summer-chip { background: #EBF5FF; color: #4A8FD4; }
.autumn-chip { background: #FFF0E6; color: #C4723A; }
.winter-chip { background: #F0E8FF; color: #6B4CC4; }

/* ===== FEATURE ITEMS ===== */
.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-icon {
  font-size: 20px;
}

/* ===== SHARE BUTTONS (Design Kit §7-1) ===== */
.share-btns {
  display: flex;
  gap: 12px;
}

.share-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 16px;
  border: 2px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s var(--ease-out-3);
  font-family: 'Be Vietnam Pro', sans-serif;
  color: var(--text-primary);
  min-height: 48px;
}

.share-btn:hover {
  border-color: var(--season-primary);
  background: var(--season-light);
}

.facebook-btn { color: #1877F2; }
.facebook-btn:hover { background: #EBF3FF; border-color: #1877F2; }

.zalo-btn { color: #0068FF; }
.zalo-btn:hover { background: #E8F0FE; border-color: #0068FF; }

.copy-btn:hover { background: var(--brand-gold-light); border-color: var(--brand-gold); }

.share-download-btn {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 12px 16px;
  background: var(--season-light);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s var(--ease-out-3);
  font-family: 'Be Vietnam Pro', sans-serif;
  color: var(--text-primary);
}

.share-download-btn:hover {
  border-color: var(--season-primary);
  transform: translateY(-1px);
}

/* ===== SCROLL ANIMATION (Design Kit §8-5) ===== */
.card-animate {
  opacity: 0;
  transform: translateY(24px);
}

.card-animate.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s var(--ease-out-5),
              transform 0.5s var(--ease-out-5);
}

/* Legacy scroll classes */
.card-hidden {
  opacity: 0;
  transform: translateY(24px);
}

.card-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s var(--ease-out-5), transform 0.5s var(--ease-out-5);
}

/* ===== AFFILIATE DISCLOSURE ===== */
.affiliate-disclosure {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  padding: 8px 12px;
  background: var(--bg-primary);
  border-radius: 8px;
  margin-bottom: 12px;
  line-height: 1.4;
}

/* ===== SOCIAL PROOF ===== */
.social-proof {
  font-size: 0.9rem;
  color: var(--brand-gold);
  font-weight: 600;
  margin-top: 16px;
}

/* ===== PALETTE SWATCHES (Design Kit §7-5) ===== */
.swatch {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 2px solid rgba(0,0,0,0.06);
  cursor: pointer;
  transition: transform 0.18s var(--ease-out-3),
              box-shadow 0.18s var(--ease-out-3);
  position: relative;
}

.swatch:hover {
  transform: scale(1.08);
  box-shadow: var(--shadow-3);
}

.swatch:hover .swatch-hex {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.swatch-hex {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  opacity: 0;
  transition: all 0.2s var(--ease-out-3);
  white-space: nowrap;
  pointer-events: none;
}

/* Mobile: show on tap via :active */
.swatch:active .swatch-hex {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== RESPONSIVE — COMPONENTS ===== */
@media (max-width: 480px) {
  .cta-btn {
    padding: 14px 28px;
    font-size: var(--text-base);
  }

  .track-btn {
    padding: 14px 16px;
    gap: 10px;
  }

  .track-icon {
    font-size: 24px;
  }

  .share-btns {
    flex-direction: column;
  }
}