/* ==================== 卡友圈 - 完全复刻 1799n.com ==================== */
:root {
  --cr-bg: #f5f8fc;
  --cr-surface: #ffffff;
  --cr-surface-soft: #f7faff;
  --cr-border: #e6edf7;
  --cr-text: #162033;
  --cr-muted: #7b889d;
  --cr-primary: #216dff;
  --cr-primary-deep: #0f45b8;
  --cr-primary-soft: #eaf2ff;
  --cr-success: #1fa971;
  --cr-warm: #ff8a3d;
  --cr-shadow: 0 20px 60px rgba(23, 44, 84, 0.08);
  --cr-shadow-soft: 0 14px 34px rgba(28, 56, 104, 0.06);
  --cr-radius-xl: 28px;
  --cr-radius-lg: 22px;
  --cr-radius-md: 18px;
  --cr-radius-sm: 14px;
}

body.circle-page {
  background: radial-gradient(circle at top left, rgba(23, 77, 206, 0.28), transparent 28%),
              radial-gradient(circle at 88% 80%, rgba(11, 47, 125, 0.15), transparent 22%),
              linear-gradient(180deg, #0a1a3a 0%, #07122b 50%, #050d20 100%);
}

/* ==================== Layout ==================== */
.circle-home { padding: 40px 0 40px; }
.circle-home a:hover, .circle-home a:focus { text-decoration: none; }

.circle-shell {
  padding: 18px;
  border: 1px solid var(--cr-border);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--cr-shadow);
  backdrop-filter: blur(16px);
}

/* ==================== Toolbar ==================== */
.circle-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding: 4px 6px 10px;
}
.circle-toolbar-brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.circle-toolbar-badge {
  width: 42px; height: 42px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1e72ff 0%, #55b3ff 100%);
  color: #fff;
  box-shadow: 0 12px 26px rgba(30, 114, 255, 0.22);
  font-size: 18px;
}
.circle-toolbar-copy strong {
  display: block;
  color: var(--cr-text);
  font-size: 18px; font-weight: 800; line-height: 1.3;
}
.circle-toolbar-copy span {
  display: block; margin-top: 3px;
  color: var(--cr-muted); font-size: 12px;
}
.circle-toolbar-actions { display: flex; align-items: center; gap: 10px; }

/* ==================== Buttons ==================== */
.circle-btn {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 8px; min-height: 42px;
  padding: 0 18px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease;
  cursor: pointer; border: none;
}
.circle-btn:hover { transform: translateY(-1px); }
.circle-btn-primary {
  background: linear-gradient(135deg, #0a2a5e 0%, #1749b8 100%);
  color: #fff;
  box-shadow: 0 14px 26px rgba(10, 42, 94, 0.30);
}
.circle-btn-light {
  border: 1px solid var(--cr-border);
  background: #fff; color: var(--cr-text);
}
.circle-btn-outline {
  border: 1px solid var(--cr-border);
  background: transparent; color: var(--cr-text);
}

/* ==================== Hero Section ==================== */
.circle-hero {
  position: relative; overflow: hidden;
  min-height: 420px; padding: 32px 30px 28px;
  border: none; border-radius: var(--cr-radius-xl);
  box-shadow: 0 28px 68px rgba(10, 31, 75, 0.30);
  color: #fff;
}

/* 确保 Hero 深蓝背景不被 .circle-card 的白色背景覆盖 */
.circle-card.circle-hero {
  background:
    radial-gradient(circle at 80% 18%, rgba(68, 132, 255, 0.28), transparent 28%),
    radial-gradient(circle at 88% 80%, rgba(11, 47, 125, 0.18), transparent 25%),
    linear-gradient(135deg, #07122b 0%, #0a1f47 38%, #0c2e70 70%, #1246a8 100%);
}
.circle-hero::before {
  content: "";
  position: absolute; right: -52px; top: -44px;
  width: 250px; height: 250px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(88, 152, 255, 0.38) 0%, rgba(255, 255, 255, 0.03) 100%);
  transform: rotate(-18deg);
}
.circle-hero > * { position: relative; z-index: 1; }
.circle-hero-label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 12px; font-weight: 700;
}
.circle-hero h1 {
  margin: 20px 0 0; max-width: 420px;
  font-size: 46px; line-height: 1.12;
  font-weight: 800; letter-spacing: -.04em;
}
.circle-hero p {
  margin: 14px 0 0; max-width: 420px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px; line-height: 1.85;
}
.circle-hero-meta {
  display: flex; flex-wrap: wrap; gap: 18px;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 13px; font-weight: 700;
}
.circle-hero-meta span i { margin-right: 6px; color: #8ec1ff; }
.circle-hero-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-top: 22px;
}
.circle-hero .circle-btn-light {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08); color: #fff;
}
.circle-hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px; margin-top: 24px;
}
.circle-hero-stat {
  padding: 14px; border-radius: 18px;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.circle-hero-stat strong {
  display: block; font-size: 24px; line-height: 1; font-weight: 800;
}
.circle-hero-stat span {
  display: block; margin-top: 8px;
  color: rgba(255, 255, 255, 0.72); font-size: 12px;
}

/* ==================== Top Grid ==================== */
.circle-top {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(320px, .9fr);
  gap: 18px; align-items: start;
}
.circle-top-main { display: flex; flex-direction: column; gap: 18px; min-width: 0; }

/* ==================== Feed Card ==================== */
.circle-card {
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius-xl);
  background: var(--cr-surface);
  box-shadow: var(--cr-shadow-soft);
}
.circle-section { padding: 22px; }
.circle-section-head {
  display: flex; align-items: center;
  justify-content: space-between; gap: 12px;
  margin-bottom: 16px;
}
.circle-section-head h3, .circle-section-head h4 {
  margin: 0; color: var(--cr-text);
  font-size: 18px; font-weight: 800;
}
.circle-section-head a, .circle-section-head span {
  color: var(--cr-muted); font-size: 12px; font-weight: 600;
}

/* ==================== Composer ==================== */
.circle-composer {
  display: flex; align-items: center;
  justify-content: space-between; gap: 16px;
  padding: 20px 24px;
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius-lg);
  background: var(--cr-surface-soft);
  margin-bottom: 8px; flex-wrap: wrap;
}
.circle-composer h4 {
  margin: 0; font-size: 15px; font-weight: 700; color: var(--cr-text);
}
.circle-composer p {
  margin: 4px 0 0; font-size: 12px; color: var(--cr-muted);
}
.circle-composer-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.circle-chip-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  border: 1px solid var(--cr-border);
  background: #fff; color: var(--cr-text);
  cursor: pointer; transition: all .2s; text-decoration: none;
}
.circle-chip-btn:hover {
  border-color: var(--cr-primary); color: var(--cr-primary);
  transform: translateY(-1px);
}
.circle-chip-btn.primary {
  background: linear-gradient(135deg, #206eff 0%, #3cb7ff 100%);
  color: #fff; border-color: transparent;
  box-shadow: 0 8px 20px rgba(32, 110, 255, 0.18);
}
.circle-chip-btn.primary:hover { color: #fff; box-shadow: 0 12px 28px rgba(32, 110, 255, 0.28); }
.circle-feed-pill {
  padding: 6px 14px; border-radius: 999px;
  background: var(--cr-primary-soft);
  color: var(--cr-primary);
  font-size: 11px; font-weight: 700; white-space: nowrap;
}

/* ==================== Tabs ==================== */
.circle-tabs {
  display: flex; gap: 0;
  border-bottom: 2px solid var(--cr-border);
  margin-bottom: 16px;
}
.circle-tab {
  padding: 10px 20px;
  font-size: 14px; font-weight: 600;
  color: var(--cr-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all .2s; text-decoration: none;
}
.circle-tab:hover { color: var(--cr-text); }
.circle-tab.active {
  color: var(--cr-primary);
  border-bottom-color: var(--cr-primary);
}

/* ==================== Post Card ==================== */
.circle-post-card {
  padding: 18px 22px;
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius-md);
  background: var(--cr-surface-soft);
  margin-bottom: 10px;
  transition: all .2s;
}
.circle-post-card:hover { border-color: var(--cr-primary-soft); box-shadow: 0 4px 16px rgba(0,0,0,.04); }
.circle-post-head {
  display: flex; align-items: center; gap: 12px;
}
.circle-post-avatar {
  width: 40px; height: 40px;
  border-radius: 12px; object-fit: cover;
}
.circle-post-author { min-width: 0; flex: 1; }
.circle-post-author-row {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.circle-post-author-row > a {
  font-size: 14px; font-weight: 700; color: var(--cr-text);
}
.circle-user-level {
  padding: 2px 8px; border-radius: 10px;
  background: var(--cr-primary-soft);
  color: var(--cr-primary);
  font-size: 11px; font-weight: 700;
}
.circle-badge-chip {
  display: inline-flex; align-items: center;
  width: 22px; height: 22px; border-radius: 6px; overflow: hidden;
}
.circle-badge-chip img { width: 100%; height: 100%; }
.circle-post-meta {
  margin-top: 4px; font-size: 12px; color: var(--cr-muted);
}
.circle-post-side {
  text-align: center;
  margin-left: auto;
  min-width: 50px;
}
.circle-post-side strong {
  display: block; font-size: 18px; font-weight: 800; color: var(--cr-primary);
  line-height: 1;
}
.circle-post-side span { font-size: 11px; color: var(--cr-muted); }
.circle-post-title {
  margin: 12px 0 8px;
  font-size: 16px; font-weight: 700;
  line-height: 1.5;
}
.circle-post-title a { color: var(--cr-text); text-decoration: none; }
.circle-post-title a:hover { color: var(--cr-primary); }
.circle-post-type {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 6px;
  font-size: 12px; font-weight: 700; margin-right: 8px;
}
.circle-post-type.question {
  background: #eaf2ff; color: var(--cr-primary);
}
.circle-post-type.article {
  background: #e6f7ee; color: var(--cr-success);
}
.circle-post-pin {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 6px;
  font-size: 12px; font-weight: 700;
  background: rgba(255, 138, 61, 0.14); color: var(--cr-warm);
  margin-right: 8px;
}
.circle-post-summary {
  font-size: 13px; color: var(--cr-muted);
  line-height: 1.7; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.circle-post-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px;
}
.circle-post-tag {
  padding: 3px 10px; border-radius: 12px;
  font-size: 12px; font-weight: 600;
  background: var(--cr-primary-soft);
  color: var(--cr-primary);
  text-decoration: none; transition: all .2s;
}
.circle-post-tag:hover { background: var(--cr-primary); color: #fff; }
.circle-post-footer {
  display: flex; align-items: center;
  justify-content: space-between;
  padding-top: 10px; border-top: 1px solid var(--cr-border);
}
.circle-post-stats {
  display: flex; gap: 16px;
  font-size: 12px; color: var(--cr-muted);
}
.circle-post-stats span { display: flex; align-items: center; gap: 4px; }

/* ==================== Empty State ==================== */
.circle-empty {
  text-align: center; padding: 60px 20px;
  color: var(--cr-muted);
}
.circle-empty-icon { font-size: 48px; margin-bottom: 12px; }
.circle-empty p { font-size: 15px; margin-bottom: 16px; }

/* ==================== Load More ==================== */
.circle-load-more {
  text-align: center; padding: 20px 0;
}
.circle-load-more button {
  padding: 10px 32px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  background: #fff; color: var(--cr-text);
  border: 1px solid var(--cr-border);
  cursor: pointer; transition: all .2s;
}
.circle-load-more button:hover {
  border-color: var(--cr-primary); color: var(--cr-primary);
  transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.06);
}
.circle-load-more button:disabled {
  opacity: .5; cursor: not-allowed; transform: none;
}

/* ==================== Sidebar ==================== */
.circle-top-side { display: flex; flex-direction: column; gap: 18px; }

.circle-side-card {
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius-xl);
  background: var(--cr-surface);
  box-shadow: var(--cr-shadow-soft);
  padding: 22px;
}
.circle-side-card h4 {
  margin: 0 0 14px; color: var(--cr-text);
  font-size: 16px; font-weight: 800;
}
.circle-side-list { display: flex; flex-direction: column; gap: 10px; }
.circle-side-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--cr-border);
  border-radius: 14px;
  background: var(--cr-surface-soft);
  text-decoration: none; color: var(--cr-text);
  transition: all .2s;
}
.circle-side-item:hover { border-color: var(--cr-primary-soft); }
.circle-side-rank {
  width: 26px; height: 26px;
  border-radius: 9px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--cr-primary-soft);
  color: var(--cr-primary);
  font-size: 12px; font-weight: 800; flex-shrink: 0;
}
.circle-side-rank.hot { background: rgba(255, 138, 61, 0.14); color: var(--cr-warm); }
.circle-side-item strong {
  display: block; font-size: 13px; font-weight: 700;
  line-height: 1.5; flex: 1; min-width: 0;
  white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis;
}
.circle-side-item span {
  display: block; margin-top: 2px; font-size: 11px;
  color: var(--cr-muted);
}

/* Hot Tags */
.circle-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.circle-tag-pill {
  padding: 6px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
  background: #fff; color: var(--cr-text);
  border: 1px solid var(--cr-border);
  text-decoration: none; transition: all .2s;
}
.circle-tag-pill:hover { border-color: var(--cr-primary); color: var(--cr-primary); }

/* ==================== Post Form ==================== */
.circle-post-form {
  background: #fff;
  border-radius: var(--cr-radius-xl);
  box-shadow: var(--cr-shadow);
  padding: 32px;
  max-width: 800px; margin: 0 auto;
}
.circle-post-form h2 {
  font-size: 24px; font-weight: 800;
  color: var(--cr-text); margin-bottom: 24px;
  text-align: center;
}
.circle-form-group { margin-bottom: 20px; }
.circle-form-group label {
  display: block; font-size: 14px; font-weight: 700;
  color: var(--cr-text); margin-bottom: 8px;
}
.circle-form-group input,
.circle-form-group textarea,
.circle-form-group select {
  width: 100%; padding: 12px 16px;
  border: 1px solid var(--cr-border);
  border-radius: 12px;
  font-size: 14px; color: var(--cr-text);
  background: #fff; transition: all .2s;
  font-family: inherit;
}
.circle-form-group input:focus,
.circle-form-group textarea:focus,
.circle-form-group select:focus {
  border-color: var(--cr-primary);
  box-shadow: 0 0 0 3px rgba(33, 109, 255, 0.08);
  outline: none;
}
.circle-form-group textarea {
  min-height: 200px; resize: vertical;
  line-height: 1.8;
}
.circle-form-actions {
  display: flex; gap: 12px; justify-content: flex-end;
  flex-wrap: wrap;
}
.circle-form-hint { font-size: 12px; color: var(--cr-muted); margin-top: 6px; }

/* ==================== 发帖图片上传 ==================== */
.circle-image-upload-area {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}
.circle-image-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.circle-image-preview-item {
  width: 100px;
  height: 100px;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--cr-border);
  flex-shrink: 0;
}
.circle-image-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.circle-image-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
}
.circle-image-remove:hover {
  background: #dc2626;
}
.circle-image-add-btn {
  width: 100px;
  height: 100px;
  border-radius: 10px;
  border: 2px dashed var(--cr-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: all .2s;
  color: var(--cr-muted);
  font-size: 12px;
  flex-shrink: 0;
  background: #fafbfc;
}
.circle-image-add-btn:hover {
  border-color: var(--cr-primary);
  color: var(--cr-primary);
  background: rgba(33,109,255,0.04);
}
.circle-image-add-btn i {
  font-size: 24px;
}

/* ==================== 帖子列表 & 详情中的图片 ==================== */
.circle-post-images {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.circle-post-images img {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--cr-border);
  cursor: pointer;
  transition: transform .2s;
}
.circle-post-images img:hover {
  transform: scale(1.05);
}
.circle-detail-images {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.circle-detail-images img {
  max-width: 260px;
  max-height: 260px;
  width: auto;
  height: auto;
  border-radius: 10px;
  object-fit: contain;
  border: 1px solid var(--cr-border);
  cursor: pointer;
  transition: transform .2s;
}
.circle-detail-images img:hover {
  transform: scale(1.03);
}

/* ==================== Detail Page ==================== */
.circle-detail { padding: 24px 0 40px; }
.circle-detail-card {
  border: 1px solid var(--cr-border);
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--cr-shadow-soft);
  padding: 30px 32px;
}
.circle-detail-head {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  gap: 18px; margin-bottom: 20px;
}
.circle-detail-title-wrap { flex: 1; min-width: 0; }
.circle-detail-title {
  margin: 0; font-size: 24px; font-weight: 800;
  color: var(--cr-text); line-height: 1.4;
}
.circle-detail-content {
  font-size: 15px; color: var(--cr-text);
  line-height: 1.9; padding: 20px 0;
  border-top: 1px solid var(--cr-border);
  border-bottom: 1px solid var(--cr-border);
  margin: 20px 0;
  word-break: break-word;
}
.circle-detail-footer {
  display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.circle-detail-stats {
  display: flex; gap: 16px;
  font-size: 13px; color: var(--cr-muted);
}
.circle-detail-stats span { display: flex; align-items: center; gap: 4px; }
.circle-back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--cr-muted); font-size: 14px; font-weight: 600;
  padding: 8px 0; margin-bottom: 16px;
  text-decoration: none; transition: color .2s;
}
.circle-back-link:hover { color: var(--cr-primary); }

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
  .circle-top { grid-template-columns: 1fr; }
  .circle-top-side { display: none; }
  .circle-hero h1 { font-size: 36px; }
  .circle-hero-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .circle-hero { padding: 24px 20px; min-height: auto; }
  .circle-hero h1 { font-size: 28px; max-width: 100%; }
  .circle-hero-stats { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .circle-composer { padding: 16px; }
  .circle-composer-actions { width: 100%; }
  .circle-chip-btn { flex: 1; justify-content: center; padding: 8px 12px; font-size: 12px; }
  .circle-tab { padding: 8px 12px; font-size: 13px; }
  .circle-post-card { padding: 14px 16px; }
  .circle-post-title { font-size: 14px; }
  .circle-toolbar { flex-wrap: wrap; }
  .circle-shell { padding: 12px; }
}
@media (max-width: 480px) {
  .circle-hero-stats { grid-template-columns: 1fr 1fr; }
  .circle-hero-stat strong { font-size: 18px; }
}