.sg-apa-tool {
  --sg-navy: #012538;
  --sg-blue: #3A8BC9;
  --sg-orange: #FF8B01;
  --sg-blue-light: #EAF5FC;
  --sg-orange-light: #FFF4E6;
  --sg-border: #BFC8CD;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Tahoma, Arial, sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  background: #fff;
  color: var(--sg-navy);
  box-sizing: border-box;
}
.sg-apa-tool * { box-sizing: border-box; }
.sg-apa-tool .sg-section-title { font-size: 18px; font-weight: 700; margin: 0 0 15px; color: var(--sg-navy); }
.sg-apa-tool .sg-row { display: flex; gap: 8px; margin-bottom: 15px; flex-wrap: wrap; }
.sg-apa-tool .sg-tab { flex: 1; min-width: 80px; padding: 10px 8px; border: 1px solid var(--sg-border); border-radius: 8px; background: #fff; color: var(--sg-navy); font-size: 14px; cursor: pointer; transition: all 0.2s ease; line-height: 1.4; }
.sg-apa-tool .sg-tab:hover { border-color: var(--sg-blue); color: var(--sg-blue); }
.sg-apa-tool .sg-tab.active, .sg-apa-tool .sg-tab[aria-pressed="true"] { background: var(--sg-navy); color: #fff; font-weight: 600; border-color: var(--sg-navy); box-shadow: inset 0 -3px 0 var(--sg-orange); }
.sg-apa-tool .sg-label { font-size: 13px; color: #607782; display: block; margin-bottom: 4px; margin-top: 10px; }
.sg-apa-tool .sg-input { width: 100%; padding: 10px 12px; border: 1px solid var(--sg-border); border-radius: 8px; font-size: 15px; background: #fff; color: var(--sg-navy); }
.sg-apa-tool .sg-input:focus { outline: 2px solid rgba(58, 139, 201, 0.22); border-color: var(--sg-blue); }
.sg-apa-tool .sg-author-box { border: 1px dashed var(--sg-blue); padding: 10px; border-radius: 8px; margin-top: 8px; background: var(--sg-blue-light); }
.sg-apa-tool .sg-author-field { flex: 1; min-width: 140px; }
.sg-apa-tool .sg-add-btn { background: #fff; color: var(--sg-blue); border: 1px solid var(--sg-blue); padding: 6px 12px; border-radius: 6px; cursor: pointer; margin-top: 8px; margin-bottom: 12px; font-size: 13px; }
.sg-apa-tool .sg-add-btn:hover, .sg-apa-tool .sg-add-btn:focus { background: var(--sg-blue); color: #fff; }
.sg-apa-tool .sg-card { background: var(--sg-blue-light); border-right: 4px solid var(--sg-blue); border-radius: 10px; padding: 16px 18px; margin-bottom: 12px; }
.sg-apa-tool .sg-card-first { margin-top: 20px; }
.sg-apa-tool .sg-card-title { font-size: 13px; color: #607782; margin: 0 0 6px; }
.sg-apa-tool .sg-output { font-size: 16px; font-weight: 600; margin: 0; color: var(--sg-navy); line-height: 1.6; overflow-wrap: anywhere; }
.sg-apa-tool .sg-copy-btn { width: 100%; padding: 12px; border: 1px solid #0F766E; border-radius: 8px; background: #fff; color: #0F766E; font-weight: 600; font-size: 15px; cursor: pointer; transition: all 0.2s ease; }
.sg-apa-tool .sg-copy-btn:hover, .sg-apa-tool .sg-copy-btn:focus { background: #0F766E; border-color: #0F766E; color: #fff; }
.sg-apa-tool .sg-promo { font-size: 14px; color: var(--sg-navy); margin-top: 24px; text-align: center; line-height: 1.7; background: var(--sg-orange-light); padding: 15px; border-radius: 8px; border: 1px solid rgba(255, 139, 1, 0.35); }
.sg-apa-tool .sg-promo a { color: var(--sg-blue); font-weight: 700; text-decoration: underline; }
.sg-apa-tool .sg-promo a:hover, .sg-apa-tool .sg-promo a:focus { color: var(--sg-orange); }

.sg-apa-tool .sg-whatsapp-link { display: inline-flex; align-items: center; justify-content: center; gap: 7px; color: var(--sg-blue); font-weight: 700; text-decoration: underline; }
.sg-apa-tool .sg-whatsapp-icon { width: 22px; height: 22px; display: inline-flex; flex: 0 0 22px; animation: sg-whatsapp-bounce 1.45s ease-in-out infinite; filter: drop-shadow(0 3px 6px rgba(1, 37, 56, 0.18)); transform-origin: center; }
.sg-apa-tool .sg-whatsapp-icon svg { width: 100%; height: 100%; display: block; }
.sg-apa-tool .sg-whatsapp-bubble { fill: #25D366; }
.sg-apa-tool .sg-whatsapp-phone { fill: #fff; }
.sg-apa-tool .sg-whatsapp-link:hover .sg-whatsapp-icon, .sg-apa-tool .sg-whatsapp-link:focus .sg-whatsapp-icon { animation-duration: 0.8s; }
@keyframes sg-whatsapp-bounce {
  0%, 100% { transform: translateY(0) scale(1); }
  35% { transform: translateY(-3px) scale(1.08); }
  60% { transform: translateY(0) scale(0.98); }
}
@media (prefers-reduced-motion: reduce) {
  .sg-apa-tool .sg-whatsapp-icon { animation: none; }
}
@media (max-width: 480px) {
  .sg-apa-tool { padding: 12px; }
  .sg-apa-tool .sg-tab { min-width: 120px; }
}