:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #101522;
  --bg-tertiary: #161e31;
  --card-bg: rgba(18, 24, 38, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.35);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.35);
  --accent-rose: #f43f5e;
  --accent-rose-glow: rgba(244, 63, 94, 0.35);
  --accent-amber: #f59e0b;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.07) 0%, transparent 40%);
  background-attachment: fixed;
}

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

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 20;
}

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

.brand-logo {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 0 15px var(--accent-cyan-glow);
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-text span {
  font-size: 11px;
  color: var(--accent-cyan);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
}

.nav-links {
  list-style: none;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}

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

.nav-link.active {
  color: #fff;
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.2), rgba(6, 182, 212, 0.05));
  border-left: 3px solid var(--accent-cyan);
}

.nav-link svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

.sidebar-user {
  padding: 16px 20px;
  border-top: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.2);
}

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

.user-name {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-email {
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Main Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Header */
.top-header {
  height: 70px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--card-border);
  background: rgba(16, 21, 34, 0.7);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.server-selector-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.select-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.server-dropdown {
  background: var(--bg-tertiary);
  color: var(--text-main);
  border: 1px solid var(--card-border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  min-width: 220px;
  cursor: pointer;
  transition: var(--transition);
}

.server-dropdown:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan-glow);
}

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

/* Content */
.content-area {
  padding: 32px;
  flex: 1;
  overflow-y: auto;
}

/* Stat Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 22px;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
}

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

.stat-cyan::before { background: var(--accent-cyan); }
.stat-emerald::before { background: var(--accent-emerald); }
.stat-rose::before { background: var(--accent-rose); }
.stat-amber::before { background: var(--accent-amber); }

.stat-title {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.stat-footer {
  font-size: 11px;
  color: var(--text-dim);
}

/* Panel Sections & Tables */
.panel-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

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

.panel-title {
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Data Table */
.table-wrapper {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  padding: 12px 16px;
  color: var(--text-muted);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--card-border);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

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

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.badge-online {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-offline {
  background: rgba(107, 114, 128, 0.15);
  color: var(--text-muted);
  border: 1px solid rgba(107, 114, 128, 0.3);
}

.badge-danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  outline: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #06b6d4, #2563eb);
  color: #fff;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-main);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

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

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

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

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

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  padding: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  transition: var(--transition);
}

.modal-backdrop.active .modal-card {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-main);
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.form-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan-glow);
}

/* Code Snippet Box */
.code-box {
  background: #06090e;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: Consolas, Monaco, monospace;
  font-size: 12px;
  color: #38bdf8;
  overflow-x: auto;
  position: relative;
  margin: 12px 0;
}

/* Auth Pages (Login / Register) */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(16px);
}

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

.auth-header h2 {
  font-size: 24px;
  font-weight: 700;
  margin-top: 12px;
}

.auth-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

.auth-tabs {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}

.auth-tab.active {
  background: var(--card-bg);
  color: var(--text-main);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

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

.pulse-green {
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse-animation 2s infinite;
}

@keyframes pulse-animation {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Quota Pill */
.quota-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--card-border);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
}
.quota-label {
  color: var(--text-muted);
}
.quota-val {
  font-weight: 700;
  color: var(--accent-cyan);
}
.btn-xs {
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 4px;
}
.btn-redeem {
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
  color: #fff;
  border: none;
  font-weight: 600;
  cursor: pointer;
}
.btn-redeem:hover {
  filter: brightness(1.15);
}

/* Admin Tabs & Headers */
.admin-header-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 24px;
}
.admin-tabs {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 4px;
  gap: 4px;
}
.admin-tab {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}
.admin-tab.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(37, 99, 235, 0.2));
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}
.nav-link-admin {
  color: var(--accent-amber) !important;
  font-weight: 600;
}
.nav-link-admin:hover, .nav-link-admin.active {
  background: rgba(245, 158, 11, 0.12) !important;
  color: #fbbf24 !important;
  border-left-color: var(--accent-amber) !important;
}

/* Custom Badges */
.badge-admin {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
}
.badge-outline-cyan {
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}
.badge-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.badge-amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.badge-rose {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}
.badge-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}