/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --bg3: #1a1a24;
  --border: #2a2a3a;
  --text: #e8e8f0;
  --text2: #8888a0;
  --accent: #00ff88;
  --accent2: #00cc6a;
  --danger: #ff4444;
  --warn: #ffaa00;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

/* Nav */
nav {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
}

.nav-links a { color: var(--text2); transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-username { color: var(--text2); }

/* Main */
main {
  flex: 1;
}

/* Hero */
.hero {
  text-align: center;
  padding: 60px 24px 40px;
  background: linear-gradient(180deg, #0d0d1a 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.hero p {
  color: var(--text2);
  font-size: 17px;
  margin-bottom: 24px;
}

/* Container */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* Section */
.section { margin-bottom: 40px; }
.section h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

/* Buttons */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #000;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--accent2); }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  padding: 9px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s;
}
.btn-secondary:hover { border-color: var(--text2); }

.btn-danger {
  display: inline-block;
  background: var(--danger);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 18px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-danger:hover { opacity: 0.85; }

/* Category Grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.category-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  transition: border-color 0.2s;
}
.category-card:hover { border-color: var(--accent); }

.category-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.category-name { font-weight: 600; }
.category-count { font-size: 12px; color: var(--text2); }
.category-desc { font-size: 13px; color: var(--text2); }

/* Topic List */
.topic-list { display: flex; flex-direction: column; gap: 8px; }

.topic-item {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: border-color 0.2s;
}
.topic-item:hover { border-color: var(--accent); }

.topic-title { font-weight: 500; margin-bottom: 4px; display: block; }
.topic-meta { font-size: 12px; color: var(--text2); display: flex; gap: 12px; }
.topic-item-right { font-size: 12px; color: var(--text2); text-align: right; display: flex; flex-direction: column; gap: 2px; shrink: 0; }

/* Badges */
.badge-locked { color: var(--warn); }
.badge-mod { color: var(--accent); font-size: 11px; background: #00ff8820; padding: 2px 8px; border-radius: 4px; }
.badge-admin { color: #ff88ff; font-size: 11px; background: #ff88ff20; padding: 2px 8px; border-radius: 4px; }
.badge-banned { color: var(--danger); font-size: 11px; background: #ff444420; padding: 2px 8px; border-radius: 4px; }

/* Forms */
.form-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  max-width: 480px;
  margin: 40px auto;
}

.form-card h1 { font-size: 22px; margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text2); margin-bottom: 6px; }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--accent); }

.form-group textarea { resize: vertical; min-height: 120px; }

.form-error { color: var(--danger); font-size: 13px; margin-bottom: 12px; }
.form-success { color: var(--accent); font-size: 13px; margin-bottom: 12px; }

/* Topic Detail */
.topic-header {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
}

.topic-header h1 { font-size: 22px; margin-bottom: 12px; }
.topic-content { color: var(--text); line-height: 1.8; white-space: pre-wrap; }

.reply-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 10px;
}

.reply-author { font-size: 13px; color: var(--text2); margin-bottom: 10px; display: flex; gap: 10px; align-items: center; }
.reply-content { line-height: 1.8; white-space: pre-wrap; }

/* Empty State */
.empty-state {
  text-align: center;
  color: var(--text2);
  padding: 48px;
  background: var(--bg2);
  border: 1px dashed var(--border);
  border-radius: 12px;
}

/* Mod Panel */
.mod-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.mod-table th {
  text-align: left;
  color: var(--text2);
  font-weight: 500;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.mod-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.mod-table tr:hover td { background: var(--bg2); }

/* Pagination */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 24px; }
.pagination a, .pagination span {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  border: 1px solid var(--border);
  color: var(--text2);
}
.pagination a:hover { border-color: var(--accent); color: var(--text); }
.pagination .active { border-color: var(--accent); color: var(--accent); }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--text2);
}

/* Responsive */
@media (max-width: 600px) {
  .hero h1 { font-size: 28px; }
  .category-grid { grid-template-columns: 1fr; }
  .topic-item { flex-direction: column; align-items: flex-start; gap: 8px; }
  .topic-item-right { text-align: left; flex-direction: row; }
}

/* Markdown Body */
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  margin: 16px 0 8px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}
.markdown-body h1 { font-size: 22px; }
.markdown-body h2 { font-size: 18px; }
.markdown-body h3 { font-size: 16px; }

.markdown-body p { margin: 8px 0; }

.markdown-body a { color: var(--accent); text-decoration: underline; }
.markdown-body a:hover { color: var(--accent2); }

.markdown-body code {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: #e6db74;
}

.markdown-body pre {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 12px 0;
}

.markdown-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  color: #e6db74;
}

.markdown-body ul, .markdown-body ol {
  margin: 8px 0;
  padding-left: 24px;
}

.markdown-body li { margin: 4px 0; }

.markdown-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 12px 0;
  padding: 8px 16px;
  background: var(--bg3);
  border-radius: 0 8px 8px 0;
  color: var(--text2);
}

.markdown-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14px;
}

.markdown-body table th,
.markdown-body table td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.markdown-body table th {
  background: var(--bg3);
  font-weight: 600;
}

.markdown-body img {
  max-width: 100%;
  border-radius: 8px;
  margin: 8px 0;
}