/* ─── Variables ─────────────────────────────────────────────────────────── */
:root {
  --bg-primary:   #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary:  #21262d;
  --bg-hover:     #30363d;
  --border:       #30363d;
  --border-muted: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted:   #484f58;
  --accent:       #58a6ff;
  --accent-muted: #1f6feb;
  --accent-subtle: #0d2035;
  --success:      #3fb950;
  --success-muted:#0f2f18;
  --warning:      #d29922;
  --warning-muted:#2b1d09;
  --danger:       #f85149;
  --danger-muted: #2d0f0e;
  --purple:       #bc8cff;
  --sidebar-w:    240px;
  --topbar-h:     64px;
  --radius:       8px;
  --radius-lg:    12px;
  --shadow:       0 4px 24px rgba(0,0,0,.4);
  --transition:   0.18s ease;
}

[data-theme="light"] {
  --bg-primary:   #f6f8fa;
  --bg-secondary: #ffffff;
  --bg-tertiary:  #f0f2f5;
  --bg-hover:     #e8ecf0;
  --border:       #d0d7de;
  --border-muted: #e8ecf0;
  --text-primary: #1f2328;
  --text-secondary:#656d76;
  --text-muted:   #adb5bd;
  --accent-subtle: #ddf4ff;
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

/* ─── Scrollbar ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Sidebar ────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: width var(--transition), transform var(--transition);
  overflow: hidden;
}

.sidebar.collapsed { width: 60px; }
.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-link span,
.sidebar.collapsed .sidebar-footer { display: none; }

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px;
  border-bottom: 1px solid var(--border-muted);
  min-height: var(--topbar-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.logo-text {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.sidebar-toggle:hover { color: var(--text-primary); background: var(--bg-hover); }

.nav-links {
  list-style: none;
  padding: 12px 8px;
  flex: 1;
  overflow-y: auto;
}

.nav-links li + li { margin-top: 2px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--accent-subtle);
  color: var(--accent);
}

.nav-link svg { flex-shrink: 0; }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-muted);
}

.agent-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); animation: pulse 2s infinite; }
.status-dot.offline { background: var(--text-muted); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ─── Main layout ────────────────────────────────────────────────────────── */
.main-wrapper {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}

.main-wrapper.collapsed { margin-left: 60px; }

.topbar {
  height: var(--topbar-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left { display: flex; flex-direction: column; gap: 2px; }

.page-title { font-size: 1.15rem; font-weight: 700; line-height: 1; }
.page-subtitle { font-size: 0.78rem; color: var(--text-secondary); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.clock {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.content {
  flex: 1;
  padding: 28px 28px 40px;
  max-width: 1400px;
  width: 100%;
}

/* ─── Typography ─────────────────────────────────────────────────────────── */
h1 { font-size: 1.6rem; font-weight: 700; }
h2 { font-size: 1.2rem; font-weight: 600; }
h3 { font-size: 1rem; font-weight: 600; }
p  { line-height: 1.6; color: var(--text-secondary); }
a  { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent-muted);
  color: #fff;
  border-color: var(--accent-muted);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-hover); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}
.btn-danger:hover { background: var(--danger-muted); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-icon {
  padding: 7px;
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-sm { padding: 4px 10px; font-size: 0.78rem; }

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover { border-color: var(--text-muted); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ─── Stats Grid ─────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-subtle), var(--shadow);
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-change {
  font-size: 0.78rem;
  color: var(--success);
}

/* ─── Grid layouts ───────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }

/* ─── Badges / Tags ──────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-blue   { background: var(--accent-subtle); color: var(--accent); }
.badge-green  { background: var(--success-muted); color: var(--success); }
.badge-yellow { background: var(--warning-muted); color: var(--warning); }
.badge-red    { background: var(--danger-muted); color: var(--danger); }
.badge-purple { background: rgba(188,140,255,.12); color: var(--purple); }
.badge-gray   { background: var(--bg-tertiary); color: var(--text-secondary); }

/* ─── Progress Bar ───────────────────────────────────────────────────────── */
.progress-wrap { background: var(--bg-tertiary); border-radius: 4px; overflow: hidden; }
.progress-bar {
  height: 6px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent-muted), var(--accent));
  transition: width 0.5s ease;
}
.progress-bar.full { background: linear-gradient(90deg, var(--success), #56d364); }

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-label { font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); }
.form-input, .form-select, .form-textarea {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  padding: 9px 12px;
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(88,166,255,.12);
}
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }
.form-select option { background: var(--bg-tertiary); }

/* ─── Table ──────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
thead th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-muted);
  font-size: 0.88rem;
  color: var(--text-primary);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg-hover); }

/* ─── Loading ────────────────────────────────────────────────────────────── */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 200px;
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Modal ──────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
  animation: fadeIn 0.15s ease;
}

.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: slideUp 0.2s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.modal-body { padding: 20px; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ─── Toast ──────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 2000;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  box-shadow: var(--shadow);
  font-size: 0.88rem;
  animation: slideIn 0.2s ease;
  min-width: 240px;
}

.toast.success { border-color: var(--success); }
.toast.error   { border-color: var(--danger);  }
.toast.info    { border-color: var(--accent);   }

@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ─── Empty state ────────────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  text-align: center;
  gap: 12px;
}

.empty-state svg { opacity: 0.3; }
.empty-state h3 { color: var(--text-secondary); font-size: 1rem; }
.empty-state p  { font-size: 0.85rem; max-width: 300px; }

/* ─── Section headers ────────────────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ─── Divider ────────────────────────────────────────────────────────────── */
.divider { height: 1px; background: var(--border-muted); margin: 20px 0; }

/* ─── Flex utils ─────────────────────────────────────────────────────────── */
.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.flex-1 { flex: 1; }
.mt-8   { margin-top: 8px; }
.mt-16  { margin-top: 16px; }
.mt-24  { margin-top: 24px; }
.mb-16  { margin-bottom: 16px; }
.mb-24  { margin-bottom: 24px; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .content { padding: 16px; }
}