:root {
  --bg-main: #0b0f19;
  --bg-sidebar: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(99, 102, 241, 0.3);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

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

/* Sidebar */
.sidebar {
  width: 270px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px 8px;
  border-bottom: 1px solid var(--border-color);
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 0 15px var(--primary-glow);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: block;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--success);
  background: rgba(16, 185, 129, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 24px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  transform: translateX(3px);
}

.nav-item.active {
  background: var(--primary-glow);
  color: #a5b4fc;
  font-weight: 600;
  border: 1px solid var(--border-accent);
}

.nav-icon {
  font-size: 1.1rem;
}

.sidebar-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tenant-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-sub);
  font-family: var(--font-mono);
}

.tenant-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 8px var(--success);
}

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

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #334155;
  color: #94a3b8;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.user-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.user-role {
  font-size: 0.7rem;
  color: var(--text-sub);
}

/* Main Content Area */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow-y: auto;
  background: radial-gradient(circle at 100% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 0% 100%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 25, 0.7);
}

.topbar-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  width: 360px;
}

.topbar-search input {
  background: transparent;
  border: none;
  color: var(--text-main);
  outline: none;
  font-size: 0.9rem;
  width: 100%;
}

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

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

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
  animation: pulse-anim 2s infinite;
}

@keyframes pulse-anim {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
  padding: 12px;
}

.btn-icon {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-sub);
}

.btn-icon:hover {
  color: var(--text-main);
}

/* Content Body & Cards */
.content-body {
  padding: 32px;
}

.view-header {
  margin-bottom: 24px;
}

.view-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.view-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 4px;
}

/* Metric Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-accent);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  margin-top: 12px;
  font-family: var(--font-mono);
}

.stat-detail {
  font-size: 0.8rem;
  color: var(--success);
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Tables */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  background: rgba(15, 23, 42, 0.6);
  padding: 14px 20px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 16px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.tag-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.tag-primary {
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
}

/* Login Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

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

.login-card {
  width: 420px;
  background: #111827;
  border: 1px solid var(--border-accent);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-brand-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.login-header h2 {
  font-size: 1.5rem;
  font-weight: 800;
}

.login-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.login-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-bottom: 16px;
  padding: 8px 12px;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-sm);
}

.hidden {
  display: none !important;
}