:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #0f1422;
  --bg-card: rgba(18, 24, 38, 0.75);
  --border-color: rgba(56, 189, 248, 0.15);
  --border-hover: rgba(56, 189, 248, 0.4);
  --accent-cyan: #00f0ff;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-gold: #f59e0b;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
  --glow-gold: 0 0 20px rgba(245, 158, 11, 0.35);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Glassmorphism Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  transition: all 0.25s ease;
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

/* Navbar */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(10, 13, 20, 0.85);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
}

.nav-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.brand-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #00f0ff, #3b82f6);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-cyan);
  font-weight: 800;
  color: #000;
  font-size: 18px;
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #fff;
}

.brand-text span {
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Live Badge */
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-connected {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.badge-demo {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
}

.badge-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.pulse-green {
  background-color: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: pulse 1.8s infinite;
}

.pulse-orange {
  background-color: #f59e0b;
  box-shadow: 0 0 10px #f59e0b;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

/* Navigation Tabs */
.tabs-nav {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0 24px;
  max-width: 1440px;
  margin: 16px auto 0;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 18px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

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

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

/* Container */
.container {
  max-width: 1440px;
  margin: 20px auto 60px;
  padding: 0 24px;
}

/* Setup Banner */
.setup-banner {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.12), rgba(239, 68, 68, 0.08));
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 12px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

/* KPI Cards Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-bottom: 26px;
}

.kpi-card {
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.kpi-card.cyan::before { background: var(--accent-cyan); }
.kpi-card.green::before { background: var(--accent-green); }
.kpi-card.gold::before { background: var(--accent-gold); }
.kpi-card.purple::before { background: var(--accent-purple); }

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.kpi-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
}

.kpi-icon {
  font-size: 1.25rem;
}

.kpi-value {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
}

.kpi-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Controls Bar */
.controls-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.search-input {
  background: rgba(15, 20, 34, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 9px 14px;
  color: #fff;
  font-size: 0.9rem;
  min-width: 260px;
  outline: none;
  transition: border-color 0.2s;
}

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

.filter-select {
  background: rgba(15, 20, 34, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 9px 14px;
  color: #fff;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

/* User Table */
.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

th {
  background: rgba(15, 20, 34, 0.95);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: middle;
}

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

/* User Avatar & Info */
.user-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b, #334155);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  border: 1px solid var(--border-color);
}

.user-name {
  font-weight: 600;
  color: #fff;
}

.user-email {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Badges */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
}

.status-online {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-offline {
  background: rgba(148, 163, 184, 0.1);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.vip-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.2), rgba(217, 119, 6, 0.3));
  border: 1px solid rgba(245, 158, 11, 0.5);
  color: #fbbf24;
}

.free-badge {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

/* Buttons */
.btn {
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: linear-gradient(135deg, #00f0ff, #0284c7);
  color: #000;
}

.btn-primary:hover {
  box-shadow: var(--glow-cyan);
  transform: translateY(-1px);
}

.btn-gold {
  background: linear-gradient(135deg, #fbbf24, #d97706);
  color: #000;
}

.btn-gold:hover {
  box-shadow: var(--glow-gold);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

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

.modal-box {
  background: #0f1422;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 100%;
  max-width: 540px;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.form-input, .form-select, .form-textarea {
  background: rgba(10, 13, 20, 0.8);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 14px;
  color: #fff;
  font-size: 0.9rem;
  outline: none;
}

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

.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.preset-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.preset-btn:hover {
  border-color: var(--accent-cyan);
  color: #fff;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  animation: toastIn 0.3s ease;
}

.toast-success {
  background: rgba(16, 185, 129, 0.9);
  border: 1px solid #34d399;
}

.toast-error {
  background: rgba(239, 68, 68, 0.9);
  border: 1px solid #f87171;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}