/*
 * Back Nine Admin — Linear-inspired dark theme
 */

:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-tertiary: #18181b;
  --bg-hover: #1e1e22;
  --bg-active: #252529;
  --border: #27272a;
  --border-subtle: #1e1e22;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --accent: #818cf8;
  --accent-hover: #6366f1;
  --accent-subtle: rgba(129, 140, 248, 0.1);
  --green: #4ade80;
  --green-subtle: rgba(74, 222, 128, 0.1);
  --red: #f87171;
  --red-subtle: rgba(248, 113, 113, 0.1);
  --yellow: #fbbf24;
  --yellow-subtle: rgba(251, 191, 36, 0.1);
  --purple: #c084fc;
  --purple-subtle: rgba(192, 132, 252, 0.1);
  --radius: 8px;
  --radius-sm: 6px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 14px; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 16px 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 10;
}
.sidebar-brand { padding: 0 16px 16px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.sidebar-brand h1 { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }
.sidebar-brand span { font-size: 12px; color: var(--text-tertiary); display: block; margin-top: 2px; }
.sidebar-nav { flex: 1; padding: 4px 8px; }
.sidebar-section { margin-bottom: 16px; }
.sidebar-section-title {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--text-tertiary); padding: 4px 8px; margin-bottom: 2px;
}
.sidebar-link {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none;
  font-size: 13px; font-weight: 500; transition: all 0.1s;
}
.sidebar-link:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-link.active { background: var(--accent-subtle); color: var(--accent); }
.sidebar-footer {
  padding: 12px 16px; border-top: 1px solid var(--border);
}
.sidebar-footer .user-email {
  font-size: 12px; color: var(--text-tertiary); margin-bottom: 4px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sidebar-footer a { font-size: 12px; color: var(--text-tertiary); text-decoration: none; }
.sidebar-footer a:hover { color: var(--text-secondary); }

/* Main */
.main-content { margin-left: 240px; flex: 1; padding: 32px 40px; max-width: 1000px; }

/* Page header */
.page-header { margin-bottom: 24px; display: flex; align-items: center; justify-content: space-between; }
.page-header h1 { font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }
.page-header .actions { display: flex; gap: 8px; }
.breadcrumb { font-size: 12px; color: var(--text-tertiary); margin-bottom: 12px; }
.breadcrumb a { color: var(--text-tertiary); text-decoration: none; }
.breadcrumb a:hover { color: var(--text-secondary); }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 32px; }
.stat-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 20px;
}
.stat-card .label {
  font-size: 12px; font-weight: 500; color: var(--text-tertiary);
  text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px;
}
.stat-card .value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }

/* Tables */
.table-container {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
thead th {
  padding: 10px 16px; text-align: left; font-size: 12px; font-weight: 500;
  color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border); background: var(--bg-tertiary);
}
tbody td {
  padding: 10px 16px; font-size: 13px; border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-hover); }
tbody td a { color: var(--text-primary); text-decoration: none; font-weight: 500; }
tbody td a:hover { color: var(--accent); }

/* Badges */
.badge {
  display: inline-flex; align-items: center; padding: 2px 8px;
  border-radius: 100px; font-size: 11px; font-weight: 500;
}
.badge-green { background: var(--green-subtle); color: var(--green); }
.badge-red { background: var(--red-subtle); color: var(--red); }
.badge-yellow { background: var(--yellow-subtle); color: var(--yellow); }
.badge-purple { background: var(--purple-subtle); color: var(--purple); }
.badge-default { background: var(--bg-hover); color: var(--text-secondary); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: var(--radius-sm); font-size: 13px;
  font-weight: 500; border: none; cursor: pointer; text-decoration: none; transition: all 0.15s;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg-tertiary); border: 1px solid var(--border); color: var(--text-secondary); }
.btn-secondary:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--text-tertiary); }
.btn-danger { background: transparent; color: var(--text-tertiary); font-size: 13px; }
.btn-danger:hover { background: var(--red-subtle); color: var(--red); }

/* Forms */
.form-container { max-width: 560px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--text-secondary); margin-bottom: 6px;
}
.form-group .hint { font-size: 12px; color: var(--text-tertiary); margin-bottom: 6px; }
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
  width: 100%; padding: 8px 12px; background: var(--bg-primary);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 13px; font-family: var(--font); transition: border-color 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-subtle);
}
.form-group textarea { font-family: var(--font-mono); font-size: 12px; line-height: 1.6; resize: vertical; }
.form-group input[type="file"] { font-size: 12px; color: var(--text-secondary); }
.form-errors {
  background: var(--red-subtle); border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--radius-sm); padding: 12px 16px; margin-bottom: 20px;
  font-size: 13px; color: var(--red);
}

/* Detail views */
.detail-grid { display: grid; grid-template-columns: 140px 1fr; gap: 8px 16px; margin-bottom: 24px; }
.detail-label {
  font-size: 12px; font-weight: 500; color: var(--text-tertiary);
  text-transform: uppercase; letter-spacing: 0.04em; padding-top: 2px;
}
.detail-value { font-size: 13px; color: var(--text-secondary); }
.detail-value code {
  font-family: var(--font-mono); font-size: 12px;
  background: var(--bg-tertiary); padding: 2px 6px; border-radius: 4px; color: var(--text-primary);
}

/* Sections */
.section { margin-top: 32px; }
.section-header {
  font-size: 14px; font-weight: 600; color: var(--text-primary);
  margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border);
}

/* Transcript */
.transcript-container {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; max-height: 600px; overflow-y: auto;
}
.transcript-entry { padding: 8px 0; border-bottom: 1px solid var(--border-subtle); }
.transcript-entry:last-child { border-bottom: none; }
.transcript-role { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 2px; }
.transcript-role.user { color: #60a5fa; }
.transcript-role.agent { color: var(--green); }
.transcript-role.function_call, .transcript-role.function_response { color: var(--purple); }
.transcript-time { font-size: 11px; color: var(--text-tertiary); font-weight: 400; margin-left: 6px; }
.transcript-content { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
.transcript-content pre {
  font-family: var(--font-mono); font-size: 11px; background: var(--bg-primary);
  padding: 8px; border-radius: var(--radius-sm); margin-top: 4px;
  white-space: pre-wrap; word-break: break-all; color: var(--text-tertiary);
}

/* Flash messages */
.flash { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 20px; }
.flash-notice { background: var(--green-subtle); color: var(--green); border: 1px solid rgba(74,222,128,0.2); }
.flash-alert { background: var(--red-subtle); color: var(--red); border: 1px solid rgba(248,113,113,0.2); }

/* Empty state */
.empty-state { text-align: center; padding: 40px; color: var(--text-tertiary); font-size: 13px; }

/* Table actions */
.table-actions { display: flex; gap: 4px; }

/* Code */
code { font-family: var(--font-mono); font-size: 12px; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 16px; }
}