:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --bg-input: #0f172a;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #334155;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #eab308;
  --danger: #ef4444;
  --info: #06b6d4;
  --sidebar-width: 220px;
  --sidebar-collapsed: 60px;
  --topbar-height: 56px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

/* Layout */
.app-layout {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: width 0.2s;
  flex-shrink: 0;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

.sidebar-brand {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
}

.sidebar.collapsed .sidebar-brand span { display: none; }

.sidebar-nav {
  flex: 1;
  padding: 8px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s;
  font-size: 14px;
  margin-bottom: 2px;
}

.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent); color: white; }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.sidebar.collapsed .nav-item span { display: none; }

.sidebar-toggle {
  padding: 12px;
  border-top: 1px solid var(--border);
  cursor: pointer;
  text-align: center;
  color: var(--text-muted);
}

/* Main content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  flex-shrink: 0;
}

.topbar-title { font-size: 18px; font-weight: 600; }

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

.org-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-hover);
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.org-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
}

/* Content area */
.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.card-title { font-size: 15px; font-weight: 600; }

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.stat-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.stat-value { font-size: 24px; font-weight: 700; }
.stat-sub { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* Progress bar */
.progress-bar {
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s;
}

.progress-fill.green { background: var(--success); }
.progress-fill.yellow { background: var(--warning); }
.progress-fill.red { background: var(--danger); }

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
  position: relative;
}

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg-hover); color: var(--text-primary); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled, .btn.is-loading {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}
.btn.is-loading::before {
  content: '';
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.7s linear infinite;
}
.is-busy {
  opacity: 0.75;
  pointer-events: none;
}
.action-status {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 250;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  color: var(--text-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.action-status::before {
  content: '';
  width: 12px;
  height: 12px;
  border: 2px solid var(--accent);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* Inputs */
.input, .select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 13px;
  width: 100%;
  outline: none;
}

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

/* Table */
.table-container { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  padding: 10px 12px;
  color: var(--text-muted);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

tr:hover { background: var(--bg-hover); }

/* Tags */
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

.tag-success { background: rgba(34,197,94,0.15); color: var(--success); }
.tag-warning { background: rgba(234,179,8,0.15); color: var(--warning); }
.tag-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.tag-info { background: rgba(6,182,212,0.15); color: var(--info); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  min-width: 400px;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; }

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

.modal-header .modal-title {
  margin-bottom: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0 4px;
  line-height: 1;
}

.modal-close:hover { color: var(--text); }

.modal-body { }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

/* Form */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; }

.model-picker-item { transition: background 0.15s ease; }
.model-picker-item:hover { background: var(--bg-hover) !important; }
.model-picker-item.selected { background: rgba(99,102,241,0.12); }

/* Grid layouts */
.org-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 12px;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
}

/* Chat panel */
.chat-layout {
  display: grid;
  grid-template-columns: 280px 1fr 300px;
  gap: 12px;
  height: calc(100vh - var(--topbar-height) - 40px);
}

.chat-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  overflow-y: auto;
}

.chat-main {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
}

.chat-output {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  overflow-y: auto;
}

/* Messages */
.message-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.message-item {
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.message-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--bg-hover);
  font-size: 12px;
}

.message-body {
  padding: 10px;
}

.message-body textarea {
  width: 100%;
  min-height: 60px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 13px;
  resize: vertical;
  outline: none;
  font-family: inherit;
}

/* Collapsible */
.collapse-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.collapse-header:hover { color: var(--text-primary); }

.collapse-body { padding: 0 0 8px 0; }

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

/* Loading */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Hidden */
.hidden { display: none !important; }

/* ============ Mobile Responsive ============ */

/* Hamburger button */
.hamburger-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.hamburger-btn svg {
  width: 24px;
  height: 24px;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
}

@media (max-width: 768px) {
  .hamburger-btn {
    display: flex;
    align-items: center;
  }

  .sidebar-overlay.show {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 95;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: var(--sidebar-width);
  }

  .sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
  }

  .sidebar.collapsed {
    width: var(--sidebar-width);
  }

  .sidebar.collapsed .sidebar-brand span,
  .sidebar.collapsed .nav-item span {
    display: inline;
  }

  .sidebar-toggle {
    display: none;
  }

  .topbar {
    padding: 0 12px;
  }

  .topbar-title {
    font-size: 15px;
  }

  .topbar-right {
    gap: 8px;
  }

  .topbar-right .org-indicator {
    display: none;
  }

  .topbar-right #topbar-user {
    display: none;
  }

  .content-area {
    padding: 12px;
    overflow-x: hidden;
  }

  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 8px;
  }

  .stat-card {
    padding: 12px;
  }

  .stat-value {
    font-size: 20px;
  }

  .org-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .model-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .card {
    padding: 12px;
  }

  .card-header {
    flex-wrap: wrap;
    gap: 8px;
  }

  .filter-bar {
    grid-template-columns: 1fr !important;
    gap: 6px;
  }

  .account-add-form {
    grid-template-columns: 1fr !important;
  }

  .chat-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    height: calc(100vh - var(--topbar-height) - 24px);
    gap: 8px;
  }

  .chat-sidebar {
    max-height: 200px;
  }

  .chat-output {
    max-height: 300px;
  }

  .modal {
    min-width: auto !important;
    max-width: 92vw !important;
    width: 92vw;
    padding: 16px;
    margin: 12px;
  }

  .modal-title {
    font-size: 16px;
  }

  .modal-actions {
    flex-wrap: wrap;
  }

  .modal-actions .btn {
    flex: 1;
    justify-content: center;
    min-width: 80px;
  }

  .table-container {
    -webkit-overflow-scrolling: touch;
  }

  table {
    font-size: 12px;
  }

  th, td {
    padding: 8px 8px;
  }

  .btn {
    padding: 8px 12px;
    font-size: 12px;
  }

  .form-group {
    margin-bottom: 10px;
  }

  .input, .select {
    font-size: 16px;
    padding: 10px 12px;
  }

  .action-status {
    right: 12px;
    bottom: 12px;
    left: 12px;
    font-size: 12px;
  }

  .card table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .toast-msg {
    left: 12px;
    right: 12px;
    top: 12px;
    text-align: center;
  }

  pre, code {
    white-space: pre-wrap;
    word-break: break-all;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .topbar-title {
    font-size: 14px;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .stat-value {
    font-size: 18px;
  }

  .stat-label {
    font-size: 11px;
  }

  .stat-sub {
    font-size: 10px;
  }

  .content-area {
    padding: 8px;
  }

  .modal {
    padding: 12px;
    max-width: 96vw;
    width: 96vw;
  }

  .btn-sm {
    padding: 4px 8px;
    font-size: 11px;
  }
}