:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #131b2e;
  --bg-glass: rgba(22, 30, 50, 0.7);
  --border-glass: rgba(255, 255, 255, 0.08);
  --accent-blue: #388bfd;
  --accent-blue-hover: #1f6feb;
  --accent-green: #2ea043;
  --accent-warning: #d29922;
  --accent-danger: #f85149;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --font-main: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Outfit', sans-serif;
}

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

body {
  background: var(--bg-primary);
  background-image: 
    radial-gradient(at 10% 20%, rgba(56, 139, 253, 0.08) 0px, transparent 50%),
    radial-gradient(at 90% 80%, rgba(46, 160, 67, 0.06) 0px, transparent 50%);
  color: var(--text-main);
  font-family: var(--font-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  margin: 1rem 1.5rem 0 1.5rem;
  border-radius: 16px;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-blue), #8a2be2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 0 20px rgba(56, 139, 253, 0.3);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
}

.brand-badge {
  font-size: 0.65rem;
  background: rgba(46, 160, 67, 0.15);
  color: #56d364;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.env-selector label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: 0.5rem;
}

.env-selector select {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.glass-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #56d364;
  border-radius: 50%;
  box-shadow: 0 0 8px #56d364;
  animation: pulse 2s infinite;
}

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

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  flex: 1;
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.25rem 1rem;
}

.tab-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.tab-icon {
  width: 20px;
  height: 20px;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.tab-btn.active {
  background: linear-gradient(90deg, rgba(56, 139, 253, 0.2), transparent);
  color: #58a6ff;
  border-left: 3px solid var(--accent-blue);
  font-weight: 600;
}

.sidebar-footer {
  border-top: 1px solid var(--border-glass);
  padding-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.system-health {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.health-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #56d364;
  font-weight: 500;
}

.health-status .dot {
  width: 6px;
  height: 6px;
  background: #56d364;
  border-radius: 50%;
}

/* Content Area */
.content-area {
  min-width: 0;
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-content.active {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.75rem;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Buttons and Inputs */
.btn {
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn.primary:hover {
  background: var(--accent-blue-hover);
  box-shadow: 0 0 15px rgba(56, 139, 253, 0.4);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn.danger {
  background: var(--accent-danger);
  color: #fff;
}

.btn.success {
  background: var(--accent-green);
  color: #fff;
}

.search-bar {
  display: flex;
  gap: 0.5rem;
}

.search-bar input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  color: var(--text-main);
  width: 280px;
  font-family: var(--font-main);
  outline: none;
}

.search-bar input:focus {
  border-color: var(--accent-blue);
}

/* Cards Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.25rem;
}

.customer-card {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.customer-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 4px; height: 100%;
  background: var(--accent-blue);
}

.customer-card.active-sub::before { background: var(--accent-green); }
.customer-card.expired-sub::before { background: var(--accent-danger); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.card-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

.card-header span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.info-item {
  display: flex;
  flex-direction: column;
}

.info-item .label {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.info-item .value {
  font-weight: 500;
}

.card-actions {
  border-top: 1px solid var(--border-glass);
  padding-top: 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Tables */
.table-container {
  overflow-x: auto;
  padding: 0.5rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th, .data-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.empty-cell {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem !important;
}

.badge {
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.success { background: rgba(46, 160, 67, 0.2); color: #56d364; }
.badge.warning { background: rgba(210, 153, 34, 0.2); color: #e3b341; }
.badge.danger { background: rgba(248, 81, 73, 0.2); color: #ff7b72; }

/* Config Switches Grid */
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.25rem;
}

.config-card {
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.config-info h3 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.config-info p {
  color: var(--text-muted);
  font-size: 0.85rem;
  max-width: 280px;
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.15);
  transition: .3s;
  border-radius: 26px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent-green);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Modal */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

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

.modal-card {
  width: 450px;
  padding: 2rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.modal-card h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 0.25rem;
}

.modal-sub {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.edit-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-group input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  padding: 0.65rem 1rem;
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-main);
  outline: none;
}

.form-group input:focus {
  border-color: var(--accent-blue);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
}