:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-hover: #232733;
  --border: #2d313e;
  --text: #e4e6eb;
  --text-dim: #8b8f9a;
  --primary: #6c8eef;
  --primary-hover: #5478db;
  --danger: #e05555;
  --danger-hover: #c94444;
  --success: #5cb85c;
  --warning: #f0ad4e;
  --radius: 6px;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.navbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}
.navbar-brand {
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
}
.navbar-brand:hover { text-decoration: none; }
.navbar-nav { display: flex; gap: 4px; align-items: center; }
.navbar-nav a {
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 13px;
}
.navbar-nav a:hover { background: var(--surface-hover); color: var(--text); text-decoration: none; }
.navbar-nav a.active { color: var(--primary); }

.content { padding: 24px 0 48px; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-title { font-size: 16px; font-weight: 600; }

/* Grid */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* Stat cards */
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.stat-value { font-size: 28px; font-weight: 700; }
.stat-label { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }

/* Scrollable content area (fixed-height card body) */
.scrollable-content {
  max-height: 400px;
  overflow-y: auto;
  padding-right: 8px;
}

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.form-control {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 12px;
  font-size: 14px;
  font-family: inherit;
}
.form-control:focus { outline: none; border-color: var(--primary); }
textarea.form-control { font-family: var(--mono); font-size: 13px; resize: vertical; min-height: 120px; }
select.form-control { cursor: pointer; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}
.btn:hover { background: var(--surface-hover); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-link { background: none; border: none; color: var(--primary); padding: 4px 8px; }
.btn-link:hover { text-decoration: underline; background: none; }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
td { font-size: 14px; }
tr:hover { background: var(--surface-hover); }

@media (max-width: 640px) {
  .hide-sm { display: none; }
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}
.badge-success { background: rgba(92,184,92,0.15); color: var(--success); }
.badge-warning { background: rgba(240,173,78,0.15); color: var(--warning); }
.badge-danger { background: rgba(224,85,85,0.15); color: var(--danger); }
.badge-dim { background: var(--surface-hover); color: var(--text-dim); }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 14px;
}
.alert-error { background: rgba(224,85,85,0.1); border: 1px solid var(--danger); color: var(--danger); }
.alert-success { background: rgba(92,184,92,0.1); border: 1px solid var(--success); color: var(--success); }
.alert-info { background: rgba(108,142,239,0.1); border: 1px solid var(--primary); color: var(--primary); }

/* Code blocks */
code, pre {
  font-family: var(--mono);
  font-size: 13px;
}
pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.mono { font-family: var(--mono); font-size: 13px; }

/* Markdown rendered content */
.markdown-body h1, .markdown-body h2, .markdown-body h3 { margin: 16px 0 8px; }
.markdown-body h1 { font-size: 20px; }
.markdown-body h2 { font-size: 18px; }
.markdown-body h3 { font-size: 16px; }
.markdown-body p { margin: 8px 0; }
.markdown-body ul, .markdown-body ol { margin: 8px 0; padding-left: 24px; }
.markdown-body code { background: var(--bg); padding: 2px 6px; border-radius: 3px; }
.markdown-body pre { margin: 12px 0; }
.markdown-body hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* Modal */
.modal-backdrop {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 420px;
  width: 90%;
}

/* Utility */
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.text-dim { color: var(--text-dim); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.text-center { text-align: center; }
.break-all { word-break: break-all; }
.hidden { display: none; }