/* ========== CSS Variables ========== */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #06b6d4;
  --secondary-light: #22d3ee;
  --success: #10b981;
  --success-light: #34d399;
  --danger: #ef4444;
  --danger-light: #f87171;
  --warning: #f59e0b;
  --warning-light: #fbbf24;
  --info: #3b82f6;
  --info-light: #60a5fa;
  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --pink: #ec4899;
  
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border: #334155;
  --border-light: #475569;
  
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  --transition: all 0.2s ease;
  --transition-slow: all 0.3s ease;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary);
}

/* ========== Layout ========== */
.dashboard {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== Header ========== */
.header {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

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

.header-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  box-shadow: var(--shadow);
}

.header-brand-text h1 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 2px;
}

.header-brand-text span {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.header-nav {
  display: flex;
  gap: 8px;
}

.nav-link {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text);
  background: var(--bg-secondary);
}

.nav-link.active {
  color: var(--primary-light);
  background: rgba(99, 102, 241, 0.15);
}

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

.balance-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius);
  color: var(--success-light);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.balance-badge:hover {
  background: rgba(16, 185, 129, 0.25);
  transform: translateY(-1px);
}

.user-info {
  text-align: right;
}

.user-info .name {
  font-weight: 600;
  font-size: 14px;
}

.user-info .role {
  font-size: 12px;
  color: var(--text-muted);
}

.btn-logout {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-logout:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: white;
}

/* Admin Header */
.admin-header .header-logo {
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}

/* ========== Main Content ========== */
.main-content {
  flex: 1;
  padding: 24px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* ========== Tabs ========== */
.tab-content {
  display: none;
}

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

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

.card:hover {
  border-color: var(--border-light);
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.card-header h2 {
  font-size: 18px;
  margin-bottom: 4px;
}

.card-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.card-body {
  padding: 24px;
}

/* ========== Stats Grid ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  opacity: 0.5;
}

.stat-info h3 {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
}

.stat-info .value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--primary-light);
}

.stat-icon.green {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--success-light);
}

.stat-icon.yellow {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--warning-light);
}

.stat-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.25);
  color: var(--info-light);
}

.stat-icon.purple {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.25);
  color: var(--accent-light);
}

.stat-icon.pink {
  background: rgba(236, 72, 153, 0.1);
  border-color: rgba(236, 72, 153, 0.25);
  color: #f472b6;
}

.progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--bg-tertiary);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--success) 0%, var(--success-light) 100%);
  transition: width 0.3s ease;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--text-muted);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.btn-success:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
  color: white;
}

.btn-warning:hover:not(:disabled) {
  transform: translateY(-2px);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-full {
  width: 100%;
}

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

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-input::placeholder {
  color: var(--text-dim);
}

.form-hint {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 6px;
}

/* ========== Tables ========== */
.table-container {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

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

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

/* ========== Badges ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

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

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

.badge-secondary {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}

/* ========== Service Cards ========== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.service-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 12px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.service-card.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.service-card .service-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 22px;
  color: white;
}

.service-card .service-name {
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 4px;
}

.service-card .service-count {
  font-size: 11px;
  color: var(--text-muted);
}

/* ========== Country Cards ========== */
.country-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.country-option {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.country-option:hover {
  border-color: var(--success);
  transform: translateY(-2px);
}

.country-option.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--success);
}

.country-option .country-flag {
  font-size: 32px;
  margin-bottom: 8px;
}

.country-option .country-name {
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 4px;
}

.country-option .country-price {
  font-size: 12px;
  color: var(--success-light);
  font-weight: 600;
}

/* ========== Number Cards ========== */
.number-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.number-card:hover {
  border-color: var(--border-light);
}

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

.number-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.number-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.country-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.service-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--primary-light);
}

.timer {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}

.timer.warning {
  color: var(--danger);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.code-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  font-weight: 700;
  color: var(--success-light);
  background: rgba(16, 185, 129, 0.1);
  padding: 12px 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.number-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.wait-timer {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.success-received {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius);
  margin-top: 16px;
}

.success-received .success-icon {
  font-size: 24px;
}

/* ========== Modals ========== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
  display: none;
  opacity: 0;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.3s ease;
}

.modal-lg {
  max-width: 700px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.modal-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ========== Topup Modal ========== */
.topup-amounts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.topup-amount {
  background: var(--bg-primary);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.topup-amount:hover {
  border-color: var(--success);
}

.topup-amount.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--success);
}

.topup-amount .amount {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.topup-amount .currency {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== Empty State ========== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state-icon {
  font-size: 56px;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text);
}

.empty-state p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ========== Alerts ========== */
#alertBox {
  position: fixed;
  top: 88px;
  right: 24px;
  z-index: 1001;
  max-width: 400px;
}

.alert {
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  animation: slideIn 0.3s ease;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--success-light);
}

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

.alert-info {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--info-light);
}

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

/* ========== Loading ========== */
.loading {
  display: flex;
  justify-content: center;
  padding: 40px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== Service Management ========== */
.service-management-card {
  margin-bottom: 20px;
}

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

.service-management-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
}

.service-management-info h3 {
  font-size: 16px;
  margin-bottom: 2px;
}

.service-management-info p {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== Icon Selector ========== */
.icon-selector {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  max-height: 200px;
  overflow-y: auto;
  padding: 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.icon-option {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 18px;
}

.icon-option:hover {
  border-color: var(--primary);
}

.icon-option.selected {
  background: var(--primary);
  border-color: var(--primary);
}

/* ========== Code Guide ========== */
.code-guide {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 16px;
}

.code-guide h4 {
  font-size: 14px;
  margin-bottom: 12px;
  color: var(--text-muted);
}

.code-guide-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.code-guide-item:last-child {
  border-bottom: none;
}

.code-guide-item span {
  font-size: 13px;
}

.code-guide-item code {
  background: var(--bg-tertiary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
}

/* ========== User Detail Stats ========== */
.user-detail-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--bg-primary);
  border-radius: var(--radius);
}

.user-detail-stat {
  text-align: center;
}

.user-detail-stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--success-light);
}

.user-detail-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ========== Activity Filters ========== */
.activity-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

/* ========== Help Section ========== */
.help-section {
  max-width: 800px;
}

.help-video {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
}

.help-video iframe {
  width: 100%;
  height: 400px;
  border: none;
}

.help-video-placeholder {
  padding: 60px;
  text-align: center;
}

.help-video-placeholder .icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.help-contact {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.help-contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  border-radius: var(--radius);
  color: white;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
}

.help-contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.3);
  color: white;
}

.guide-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.guide-box h3 {
  font-size: 16px;
  margin-bottom: 16px;
  color: var(--text-muted);
}

.guide-box ol {
  padding-left: 20px;
  margin-bottom: 20px;
}

.guide-box li {
  margin-bottom: 10px;
  color: var(--text-muted);
}

.guide-box li strong {
  color: var(--text);
}

.guide-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius);
  padding: 16px;
}

.guide-warning p {
  color: var(--warning-light);
  margin: 0;
}

/* ========== Login Page ========== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1f3d 100%);
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 420px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 32px;
  font-weight: 800;
  box-shadow: var(--shadow-glow);
}

.login-logo h1 {
  font-size: 24px;
  margin-bottom: 4px;
}

.login-logo p {
  color: var(--text-muted);
  font-size: 14px;
}

.login-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.login-tab {
  flex: 1;
  padding: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.login-tab:hover {
  border-color: var(--primary);
  color: var(--text);
}

.login-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.login-footer a {
  color: var(--primary-light);
  font-weight: 600;
}

/* ========== Landing Page ========== */
.landing-page {
  min-height: 100vh;
}

.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 24px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.landing-nav-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.landing-nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.landing-nav-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
}

.landing-nav-logo span {
  font-size: 20px;
  font-weight: 700;
}

.landing-nav-links {
  display: flex;
  gap: 32px;
}

.landing-nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 15px;
}

.landing-nav-links a:hover {
  color: var(--text);
}

.landing-nav-actions {
  display: flex;
  gap: 12px;
}

.hero-section {
  padding: 160px 24px 100px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(99, 102, 241, 0.05) 50%, var(--bg-primary) 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 13px;
  color: var(--primary-light);
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.features-section {
  padding: 100px 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px;
}

.feature-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 15px;
}

.pricing-section {
  padding: 100px 24px;
  background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(16, 185, 129, 0.05) 50%, var(--bg-primary) 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  position: relative;
}

.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.pricing-card.popular::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 24px;
  margin-bottom: 8px;
}

.pricing-card .price {
  font-size: 48px;
  font-weight: 800;
  color: var(--success-light);
  margin: 20px 0;
}

.pricing-card .price span {
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  text-align: left;
}

.pricing-card li {
  padding: 8px 0;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-card li::before {
  content: '✓';
  color: var(--success-light);
  font-weight: 700;
}

.cta-section {
  padding: 100px 24px;
  text-align: center;
}

.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  max-width: 800px;
  margin: 0 auto;
}

.cta-card h2 {
  font-size: 36px;
  margin-bottom: 16px;
}

.cta-card p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 32px;
}

.cta-card .btn {
  background: white;
  color: var(--primary);
  font-size: 16px;
  padding: 16px 32px;
}

.cta-card .btn:hover {
  background: var(--bg-primary);
}

.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ========== Grid Utilities ========== */
.grid {
  display: grid;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.gap-3 {
  gap: 12px;
}

.gap-4 {
  gap: 16px;
}

/* ========== Text Utilities ========== */
.text-center {
  text-align: center;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .header-nav {
    display: none;
  }
  
  .hero-title {
    font-size: 40px;
  }
}

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
    height: auto;
    padding: 16px 0;
  }
  
  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-cols-2 {
    grid-template-columns: 1fr;
  }
  
  .service-grid,
  .country-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .topup-amounts {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .section-header h2 {
    font-size: 28px;
  }
  
  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .landing-nav-links {
    display: none;
  }
  
  .login-card {
    padding: 24px;
  }
  
  .modal {
    max-width: 100%;
    margin: 10px;
  }
  
  .number-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .number-actions button {
    width: 100% !important;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .service-grid,
  .country-grid {
    grid-template-columns: 1fr;
  }
  
  .user-detail-stats {
    grid-template-columns: 1fr;
  }
  
  .activity-filters {
    flex-direction: column;
  }
  
  .icon-selector {
    grid-template-columns: repeat(4, 1fr);
  }
}