/* ============================================================
   Applinka Dashboard — Dark Theme Styles
   ============================================================ */

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1a2332;
  --bg-card: #1e293b;
  --bg-input: #0f172a;
  --bg-hover: #334155;
  --border-color: #2d3a50;
  --border-light: #3b4a63;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #00d4aa;
  --accent-hover: #00f0c0;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  --success: #22c55e;
  --info: #3b82f6;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.5);
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* ============================================================
   Layout
   ============================================================ */

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.sidebar-logo span {
  color: var(--text-primary);
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition);
  border-left: 3px solid transparent;
  cursor: pointer;
}

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

.nav-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-dim);
}

.nav-item .nav-icon {
  font-size: 1.1rem;
  width: 22px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}

.status-dot.connected { background: var(--success); }
.status-dot.disconnected { background: var(--danger); }
.status-dot.connecting { background: var(--warning); animation: pulse 1.5s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Main content */
.main-content {
  flex: 1;
  margin-left: 240px;
  padding: 0;
  min-height: 100vh;
}

.page-header {
  padding: 24px 32px 16px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.page-content {
  padding: 24px 32px;
}

/* ============================================================
   Components
   ============================================================ */

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

.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow);
}

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

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Stats card */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

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

.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
}

.stat-detail {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px rgba(0, 212, 170, 0.25);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: var(--bg-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background: var(--border-color);
}

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover {
  background: var(--danger-hover);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  transition: border-color var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-input::placeholder {
  color: var(--text-muted);
}

select.form-input {
  font-family: var(--font-sans);
}

textarea.form-input {
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 80px;
}

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background: var(--bg-secondary);
}

th {
  text-align: left;
  padding: 12px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

tr:hover td {
  background: rgba(255,255,255,0.02);
}

tr:last-child td {
  border-bottom: none;
}

/* Badges / Tags */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: capitalize;
}

.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--info); }
.badge-muted { background: rgba(100, 116, 139, 0.15); color: var(--text-muted); }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 520px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

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

.modal-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body {
  padding: 20px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
}

.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--success);
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--info);
}

/* Quick actions */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.quick-action-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.quick-action-card:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.quick-action-icon {
  font-size: 1.5rem;
}

.quick-action-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Provider icons (colored circles) */
.provider-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: white;
  flex-shrink: 0;
}

/* Tool cards grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  transition: border-color var(--transition);
}

.tool-card:hover {
  border-color: var(--border-light);
}

.tool-card-header {
  padding: 16px 16px 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.tool-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}

.tool-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0 16px 12px;
  line-height: 1.5;
}

.tool-meta {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px;
  flex-wrap: wrap;
}

.tool-actions {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 8px;
  background: var(--bg-secondary);
}

.tool-schema {
  padding: 0 16px 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tool-schema pre {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 10px;
  margin-top: 6px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  max-height: 200px;
  overflow-y: auto;
}

/* Login page */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo h1 {
  font-size: 1.75rem;
  color: var(--accent);
  font-weight: 700;
}

.login-logo p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* Filters bar */
.filters-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  align-items: center;
}

.filter-input {
  padding: 8px 12px;
  font-size: 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
  font-family: var(--font-sans);
  min-width: 160px;
}

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

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.empty-state p {
  font-size: 0.9rem;
  max-width: 400px;
  margin: 0 auto;
}

/* Loading overlay for buttons */
.btn .spinner {
  width: 14px;
  height: 14px;
  border-width: 2px;
}

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

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-240px);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .page-header {
    padding: 16px;
  }

  .page-content {
    padding: 16px;
  }

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

  .quick-actions {
    grid-template-columns: 1fr 1fr;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .mobile-menu-btn {
    display: block !important;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
  }
}

.mobile-menu-btn {
  display: none;
}

/* ============================================================
   Connection cards
   ============================================================ */

.connections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.connection-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.connection-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.connection-info {
  flex: 1;
}

.connection-provider {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.connection-name {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.connection-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.connection-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}