/* ==========================================================================
   Comments Section — Clean Modern Wrapper
   ========================================================================== */

.fb-comments-wrap {
  margin-top: 3rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

/* ── Section title ─────────────────────────────────────────────────────── */
.fb-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1.2rem;
}

.fb-section-title h3 {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  color: #1a1a2e;
  margin: 0;
  letter-spacing: -0.01em;
}

.fb-section-title .fb-title-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, #e4e6eb 0%, transparent 100%);
  border-radius: 2px;
}

/* ── Outer card ────────────────────────────────────────────────────────── */
.fb-comments-card {
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e8eaed;
  box-shadow: 0 4px 24px rgba(0,0,0,0.07), 0 1px 4px rgba(0,0,0,0.04);
  animation: fb-fadein 0.4s cubic-bezier(0.22,1,0.36,1);
}

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

/* ── Gradient header banner ────────────────────────────────────────────── */
.fb-comments-header {
  background: linear-gradient(135deg, #1877f2 0%, #0a5fd8 60%, #0052cc 100%);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

/* Decorative circles */
.fb-comments-header::before {
  content: '';
  position: absolute;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  top: -40px; right: 40px;
  pointer-events: none;
}
.fb-comments-header::after {
  content: '';
  position: absolute;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  bottom: -30px; right: 10px;
  pointer-events: none;
}

.fb-page-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.35);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  position: relative;
  z-index: 1;
}

.fb-header-info {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.fb-page-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  display: block;
  line-height: 1.3;
}

.fb-comment-sub {
  font-size: 0.74rem;
  color: rgba(255,255,255,0.75);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.fb-header-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border-radius: 20px;
  border: 1.5px solid rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
  font-family: inherit;
  white-space: nowrap;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(4px);
}
.fb-header-btn:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.7);
  color: #fff;
  text-decoration: none;
}

/* ── Reaction bar ──────────────────────────────────────────────────────── */
.fb-reactions-bar {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid #eaecf0;
  background: #fff;
}

.fb-reaction-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 4px;
  border: none;
  background: none;
  color: #65676b;
  cursor: pointer;
  transition: background 0.14s;
  font-family: inherit;
  line-height: 1;
  position: relative;
}

.fb-reaction-btn:hover { background: #f5f6f7; }

/* Gạch chân active */
.fb-reaction-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 20%; right: 20%;
  height: 2.5px;
  border-radius: 2px 2px 0 0;
  background: currentColor;
}

/* màu active từng loại */
.fb-reaction-btn.active            { color: #1877f2; }
.fb-reaction-btn.active.love       { color: #e0245e; }
.fb-reaction-btn.active.haha       { color: #f0a500; }
.fb-reaction-btn.active.comment-btn{ color: #1877f2; }

/* ── Icon emoji wrapper ────────────────────────────────────────────────── */
.fb-react-icon {
  font-size: 1.5rem;
  line-height: 1;
  display: block;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  filter: grayscale(0%);
}

.fb-reaction-btn:not(.active) .fb-react-icon {
  filter: grayscale(30%);
  opacity: 0.75;
}

.fb-reaction-btn:hover .fb-react-icon {
  transform: scale(1.25) translateY(-2px);
  filter: grayscale(0%);
  opacity: 1;
}

.fb-reaction-btn.active .fb-react-icon {
  transform: scale(1.1);
  filter: grayscale(0%);
  opacity: 1;
}

/* label text */
.fb-react-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color 0.14s;
}

/* ── Giscus body ───────────────────────────────────────────────────────── */
.fb-comments-body {
  position: relative;
  min-height: 100px;
  background: #fff;
}

.fb-comments-body .giscus {
  margin: 0 !important;
}
.fb-comments-body .giscus-frame {
  border: none !important;
  width: 100% !important;
}

/* ── Loading dots ──────────────────────────────────────────────────────── */
.fb-comments-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 40px 20px;
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: #fff;
}
.fb-comments-loading.hidden { display: none; }

.fb-loading-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #1877f2;
  opacity: 0.25;
  animation: fb-bounce 1.3s infinite ease-in-out;
}
.fb-loading-dot:nth-child(1) { animation-delay: 0s; }
.fb-loading-dot:nth-child(2) { animation-delay: 0.22s; }
.fb-loading-dot:nth-child(3) { animation-delay: 0.44s; }

@keyframes fb-bounce {
  0%, 80%, 100% { transform: scale(0.65); opacity: 0.25; }
  40%            { transform: scale(1.15); opacity: 1; }
}

/* ── Footer ────────────────────────────────────────────────────────────── */
.fb-comments-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 9px 16px;
  border-top: 1px solid #f0f2f5;
  background: #fafbff;
  font-size: 0.72rem;
  color: #8a8d91;
}
.fb-comments-footer a {
  color: #1877f2;
  text-decoration: none;
  font-weight: 600;
}
.fb-comments-footer a:hover { text-decoration: underline; }

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 576px) {
  .fb-comments-header { padding: 14px 14px; gap: 10px; }
  .fb-header-btn span { display: none; }
  .fb-header-btn { padding: 6px 10px; }
  .fb-reactions-bar { padding: 8px 12px; gap: 6px; }
  .fb-reaction-btn { padding: 6px 10px; font-size: 0.78rem; }
}