:root {
  --bg-dark: #090d16;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.25);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.25);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.25);
  --info: #06b6d4;
  --info-glow: rgba(6, 182, 212, 0.25);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  --border-color: rgba(255, 255, 255, 0.1);
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --sidebar-width: 260px;
  --topbar-height: 70px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(139, 92, 246, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-md);
}

/* Helper Classes */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted) !important; }
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }
.text-info { color: var(--info) !important; }
.code-font { font-family: var(--font-mono); }

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  border-radius: 0;
  border-right: 1px solid var(--border-color);
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

.brand-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--info));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: white;
  box-shadow: 0 0 20px var(--primary-glow);
}

.brand-text h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
}

.brand-text span {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Nav Menu */
.nav-menu {
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: var(--transition);
}

.nav-item i {
  font-size: 18px;
  width: 22px;
  text-align: center;
}

.nav-item:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
  color: white;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.2), transparent);
  border-left: 3px solid var(--primary);
}

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

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-info .avatar {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-details span {
  display: block;
  font-size: 13px;
  font-weight: 600;
  max-width: 140px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-online {
  font-size: 11px;
  color: var(--success);
}
.status-online i { font-size: 8px; vertical-align: middle; }

/* Main Content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 24px 32px;
}

/* Top Header */
.top-header {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  margin-bottom: 28px;
}

.header-title h1 {
  font-size: 22px;
  font-weight: 700;
}

.header-title span {
  font-size: 13px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-pill {
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 14px;
  border-radius: 30px;
  font-size: 13px;
  border: 1px solid var(--border-color);
}

/* Tabs */
.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Cards & Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.2);
}

.stat-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.bg-primary-glow { background: rgba(59, 130, 246, 0.15); color: var(--primary); }
.bg-info-glow { background: rgba(6, 182, 212, 0.15); color: var(--info); }
.bg-warning-glow { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.bg-success-glow { background: rgba(16, 185, 129, 0.15); color: var(--success); }

.stat-info .stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

.stat-info h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 2px 0;
}

.grid-2-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-body {
  padding: 24px;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-primary { background: var(--primary); color: white; }
.badge-success { background: rgba(16, 185, 129, 0.2); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.4); }
.badge-warning { background: rgba(245, 158, 11, 0.2); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.4); }
.badge-secondary { background: rgba(255, 255, 255, 0.1); color: var(--text-muted); }
.badge-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-main); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 0 15px var(--primary-glow); }

.btn-success {
  background: var(--success);
  color: white;
}
.btn-success:hover { background: #059669; box-shadow: 0 0 15px var(--success-glow); }

.btn-info {
  background: var(--info);
  color: white;
}
.btn-info:hover { background: #0891b2; }

.btn-warning {
  background: var(--warning);
  color: #0f172a;
}
.btn-warning:hover { background: #d97706; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.3); }

.btn-glow {
  box-shadow: 0 0 20px var(--success-glow);
}

.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 14px 24px; font-size: 16px; }

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.table th {
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Forms */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: white;
  font-family: var(--font-family);
  font-size: 14px;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

/* Preset Pills */
.preset-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pill-preset {
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.pill-preset:hover {
  background: var(--primary);
  color: white;
}

/* Switch Toggle */
.switch-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.switch-label input { display: none; }

.switch-slider {
  width: 44px;
  height: 24px;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  position: relative;
  transition: var(--transition);
}

.switch-slider::before {
  content: '';
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: var(--transition);
}

.switch-label input:checked + .switch-slider {
  background: var(--success);
}

.switch-label input:checked + .switch-slider::before {
  transform: translateX(20px);
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
  font-size: 14px;
}
.alert-danger { background: rgba(239, 68, 68, 0.15); border: 1px solid rgba(239, 68, 68, 0.3); color: #fca5a5; }
.alert-success { background: rgba(16, 185, 129, 0.15); border: 1px solid rgba(16, 185, 129, 0.3); color: #6ee7b7; }

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 90%;
  max-width: 540px;
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.modal-lg { max-width: 800px; }

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
}

.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Login Card Specific */
.login-card {
  width: 100%;
  max-width: 420px;
  padding: 36px;
  border-radius: var(--radius-lg);
}

.login-header .brand-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--success));
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: white;
  margin-bottom: 16px;
  box-shadow: 0 0 25px var(--primary-glow);
}

.login-header h2 { font-size: 24px; font-weight: 700; margin-bottom: 6px; }
.login-footer { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border-color); }

/* Log Viewer */
.log-viewer {
  background: #020617;
  color: #38bdf8;
  padding: 16px;
  border-radius: var(--radius-sm);
  max-height: 400px;
  overflow-y: auto;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

/* Spinners */
.spinner-glow {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(59, 130, 246, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  display: inline-block;
  animation: spin 1s linear infinite;
}

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

.progress-bar-container {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar-fill {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--success));
  animation: progressPulse 2s ease-in-out infinite;
}

@keyframes progressPulse {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Responsive */
@media (max-width: 992px) {
  .sidebar { width: 80px; }
  .brand-text, .nav-item span, .user-details { display: none; }
  .nav-item { justify-content: center; padding: 16px; }
  .main-content { margin-left: 80px; }
  .grid-2-cols { grid-template-columns: 1fr; }
}