:root {
  --page-max-width: 1440px;
  --sidebar-width: 220px;
  --rail-width: 280px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --border-color: rgba(120, 130, 150, 0.2);
  --surface-color: #ffffff;
  --surface-secondary: #f7f9fc;
  --surface-hover: #f1f4f9;
  --text-primary: #182033;
  --text-secondary: #667085;
  --text-muted: #98a2b3;
  --blue: #126bff;
  --navy: #020817;
  --red: #e5484d;
  --green: #08a66a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text-primary);
  font-family: "Inter", "Pretendard", "Noto Sans KR", "Segoe UI", Arial, sans-serif;
  background: #f4f7fb;
}

a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.community-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  min-height: 68px;
  padding: 0 var(--space-5);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  color: #fff;
  background: rgba(2, 8, 23, 0.96);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(4, 5px);
  align-items: end;
  gap: 5px;
  width: 34px;
  height: 34px;
}

.brand-mark span {
  display: block;
  border-radius: 5px;
  background: linear-gradient(180deg, #18c8ff, #126bff);
}

.brand-mark span:nth-child(1) { height: 14px; }
.brand-mark span:nth-child(2) { height: 24px; }
.brand-mark span:nth-child(3) { height: 31px; }
.brand-mark span:nth-child(4) { height: 20px; }

.brand strong { display: block; font-size: 21px; line-height: 1; }
.brand em { display: block; margin-top: 4px; color: #58c7ff; font-size: 10px; font-style: normal; font-weight: 900; letter-spacing: 2px; }

.community-topbar nav {
  display: flex;
  gap: 18px;
  overflow-x: auto;
}

.community-topbar nav a {
  color: rgba(255,255,255,0.78);
  font-size: 14px;
  font-weight: 850;
  white-space: nowrap;
}

.community-topbar nav a.is-active,
.community-topbar nav a:hover { color: #5cd9ff; }

.account-area {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 850;
}

.account-area a {
  padding: 9px 13px;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: var(--radius-sm);
}

.community-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--rail-width);
  gap: var(--space-5);
  width: min(var(--page-max-width), calc(100% - 40px));
  margin: var(--space-5) auto;
}

.community-sidebar,
.community-rail section,
.board-page,
.editor-page,
.detail-page,
.state-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-color);
}

.community-sidebar {
  position: sticky;
  top: 92px;
  align-self: start;
  padding: var(--space-4);
}

.community-sidebar h2 {
  margin: 0 0 var(--space-4);
  font-size: 20px;
}

.community-sidebar button,
.mini-list button {
  display: block;
  width: 100%;
  min-height: 42px;
  margin-bottom: 6px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  background: transparent;
  text-align: left;
  font-weight: 850;
}

.community-sidebar button.is-active,
.community-sidebar button:hover,
.mini-list button:hover {
  color: var(--blue);
  background: #eef5ff;
}

.community-rail {
  display: grid;
  gap: var(--space-4);
  align-self: start;
}

.community-rail section {
  padding: var(--space-4);
}

.community-rail h3 {
  margin: 0 0 var(--space-3);
  font-size: 16px;
}

.board-page,
.editor-page,
.detail-page,
.state-card {
  padding: var(--space-5);
}

.board-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  align-items: start;
  margin-bottom: var(--space-4);
}

.board-head h1 {
  margin: 0 0 8px;
  font-size: 30px;
}

.board-head p {
  margin: 0;
  color: var(--text-secondary);
  font-weight: 700;
}

.primary-button,
.secondary-button,
.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  font-weight: 900;
}

.primary-button {
  border: 0;
  color: #fff;
  background: var(--blue);
}

.secondary-button {
  border: 1px solid var(--border-color);
  color: var(--blue);
  background: #fff;
}

.danger-button {
  border: 1px solid rgba(229,72,77,0.25);
  color: var(--red);
  background: #fff5f5;
}

.board-toolbar {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(120px, 180px) 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.board-toolbar select,
.stock-search input,
.editor-form input,
.editor-form textarea,
.editor-form select,
.comment-form textarea {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  background: #fff;
}

.board-toolbar select,
.stock-search input,
.editor-form input,
.editor-form select {
  min-height: 42px;
  padding: 0 12px;
}

.post-list {
  border-top: 1px solid var(--border-color);
}

.post-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  min-height: 72px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-color);
}

.post-row h3 {
  margin: 0 0 7px;
  font-size: 17px;
}

.post-row h3 a:hover { color: var(--blue); }

.post-meta,
.ticker-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 750;
}

.badge,
.ticker-badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
}

.badge { color: #0d3c91; background: #eef5ff; }
.ticker-badge { color: var(--blue); background: #f2f7ff; }

.post-stats {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 850;
  text-align: right;
  white-space: nowrap;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.stock-search {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.stock-results {
  display: grid;
  gap: 8px;
}

.stock-card {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  min-height: 64px;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #fff;
}

.stock-card strong { color: var(--blue); font-size: 18px; }
.stock-card span { color: var(--text-secondary); font-size: 13px; font-weight: 750; }

.stock-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: start;
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--surface-secondary);
}

.stock-header h1 { margin: 0; }
.price-empty { color: var(--text-muted); font-weight: 800; }

.editor-form,
.comment-form {
  display: grid;
  gap: var(--space-3);
}

.editor-form textarea {
  min-height: 240px;
  padding: 12px;
  resize: vertical;
  line-height: 1.65;
}

.form-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--space-3);
}

.post-body {
  max-width: 860px;
  color: #344054;
  font-size: 16px;
  font-weight: 650;
  line-height: 1.8;
  white-space: pre-wrap;
}

.post-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--space-4);
}

.comments {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.comment-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.comment-form textarea {
  min-height: 90px;
  padding: 12px;
  resize: vertical;
}

.empty-state,
.error-state {
  padding: var(--space-5);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background: var(--surface-secondary);
  font-weight: 800;
}

@media (max-width: 1080px) {
  .community-topbar {
    grid-template-columns: 1fr;
    padding: 14px var(--space-4);
  }

  .community-shell {
    grid-template-columns: 1fr;
  }

  .community-sidebar,
  .community-rail {
    position: static;
  }

  .community-sidebar {
    display: flex;
    overflow-x: auto;
    gap: 6px;
  }

  .community-sidebar h2 { display: none; }
  .community-sidebar button { min-width: 120px; margin-bottom: 0; text-align: center; }
}

@media (max-width: 720px) {
  .community-shell { width: min(100% - 20px, var(--page-max-width)); }
  .board-page, .editor-page, .detail-page { padding: var(--space-4); }
  .board-head, .stock-header, .board-toolbar, .form-grid, .stock-card {
    grid-template-columns: 1fr;
  }
  .post-row {
    grid-template-columns: 1fr;
    min-height: 72px;
  }
  .post-stats { text-align: left; }
  .post-row h3 {
    display: -webkit-box;
    overflow: hidden;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }
}