:root {
  --bg-dark: #090d16;
  --bg-card: #111827;
  --bg-card-hover: #1f2937;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.25);
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.35);
  --accent: #8b5cf6;
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 12px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
}

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

.brand {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 0 15px var(--primary-glow);
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

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

.nav-links {
  list-style: none;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
}

.nav-btn.active {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--border-highlight);
  color: #fff;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.15);
}

.nav-badge {
  margin-left: auto;
  background: var(--warning);
  color: #000;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 12px;
}

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  max-height: 100vh;
}

.top-bar {
  padding: 20px 32px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.page-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.live-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--success);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
}

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

@keyframes pulse {
  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 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.btn-refresh {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-refresh:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
}

.content-container {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

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

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  transition: transform 0.2s, border-color 0.2s;
  box-shadow: var(--shadow);
}

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

.stat-card.featured {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.06));
  border-color: var(--border-highlight);
}

.stat-info h3 {
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.stat-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(255, 255, 255, 0.05);
}

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

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

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.card-body {
  padding: 24px;
}

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

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

th {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
}

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

tr:hover td {
  background: rgba(255, 255, 255, 0.015);
}

/* Status Pills */
.pill {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  display: inline-block;
}

.pill.success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.pill.warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.pill.danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

/* Action Buttons */
.btn-action {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

.btn-approve:hover {
  background: #059669;
}

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

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

.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary:hover {
  background: #4f46e5;
  box-shadow: 0 0 15px var(--primary-glow);
}

/* Forms & Textareas */
.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  background: #182234;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
  color: #fff;
  font-size: 0.92rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.code-box {
  background: #0d1322;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 4px 8px;
  font-family: monospace;
  color: #a78bfa;
  font-size: 0.85rem;
}

.tab-pane {
  display: none;
}

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

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

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

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  width: 90%;
  max-width: 440px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

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

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: #fff;
}

.modal-body {
  padding: 24px;
}

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

.btn-secondary {
  background: #273349;
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: #374763;
}

.radio-group {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.radio-pill {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  border-radius: 8px;
  background: #182234;
  border: 1px solid var(--border-color);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s;
}

.radio-pill.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--primary);
  color: #fff;
}