:root {
  --primary: #1B6CA8;
  --primary-dark: #145285;
  --secondary: #25D366;
  --accent: #FF6B35;
  --danger: #dc3545;
  --warning: #ffc107;
  --success: #198754;
  --dark: #1a1a2e;
  --sidebar-bg: #1a1a2e;
  --sidebar-text: #e8e8e8;
  --card-border: #e0e6ed;
  --gradient: linear-gradient(135deg, #1B6CA8 0%, #FF6B35 100%);
  --gradient-hero: linear-gradient(135deg, #2563eb 0%, #dc2626 100%);
}

* { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: #333;
  background: #f8fafc;
}

a { text-decoration: none; }

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-grid {
  background-color: #f8fafc;
  background-image:
    linear-gradient(rgba(27, 108, 168, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 108, 168, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

.site-navbar {
  background: #fff;
  border-bottom: 1px solid var(--card-border);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-navbar .nav-link {
  color: #475569;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
}

.site-navbar .nav-link:hover,
.site-navbar .nav-link.active { color: var(--primary); }

.brand-logo { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px; }
.brand-logo .brand-wiza { color: #dc2626; }
.brand-logo .brand-sms { color: var(--primary); }

.btn-primary-custom {
  background: var(--primary);
  border: none;
  color: #fff;
  padding: 0.6rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
}

.btn-primary-custom:hover { background: var(--primary-dark); color: #fff; }

.btn-accent {
  background: #dc2626;
  border: none;
  color: #fff;
  padding: 0.75rem 2rem;
  border-radius: 12px;
  font-weight: 600;
}

.btn-accent:hover { background: #b91c1c; color: #fff; }

.btn-whatsapp {
  background: var(--secondary);
  border: none;
  color: #fff;
  padding: 0.75rem 2rem;
  border-radius: 12px;
  font-weight: 600;
}

.hero-section { min-height: 85vh; display: flex; align-items: center; }

.login-card {
  background: #fff;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  border: 1px solid var(--card-border);
}

.feature-card {
  background: #fff;
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--card-border);
  height: 100%;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.gradient-banner {
  background: var(--gradient-hero);
  border-radius: 24px;
  padding: 4rem 2rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.gradient-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 20px 20px;
}

.site-footer {
  background: #fff;
  border-top: 1px solid var(--card-border);
  padding: 4rem 0 2rem;
}

.chat-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--secondary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-fab:hover { color: #fff; transform: scale(1.05); }

.app-wrapper { display: flex; min-height: 100vh; }

.app-sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s;
}

.app-sidebar .sidebar-brand {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-weight: 800;
  font-size: 1.25rem;
  color: #fff;
}

.app-sidebar .nav-item .nav-link {
  color: rgba(255,255,255,0.7);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.app-sidebar .nav-item .nav-link:hover,
.app-sidebar .nav-item .nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.08);
  border-left-color: var(--primary);
}

.sidebar-section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.4);
  padding: 1rem 1.5rem 0.5rem;
}

.app-main {
  margin-left: 240px;
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-topbar {
  background: #fff;
  border-bottom: 1px solid var(--card-border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.app-content { padding: 1.5rem; flex: 1; }

.stat-card {
  background: #fff;
  border-radius: 16px;
  padding: 1.25rem;
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 100%;
}

.stat-card .stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.stat-card .stat-value { font-size: 1.5rem; font-weight: 700; line-height: 1.2; }
.stat-card .stat-label { font-size: 0.85rem; color: #64748b; }

.content-card {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--card-border);
  padding: 1.5rem;
}

.user-avatar-sm {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1B6CA8, #2563eb);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.admin-users-table thead th {
  background: #f8fafc;
  border-bottom: 1px solid var(--card-border);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #64748b;
  font-weight: 600;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.gateway-card .form-check-label { font-size: 0.875rem; }

.gateway-add-panel { padding: 1.25rem 1.5rem; }
.gateway-add-head,
.gateway-section-head,
.gateway-card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}
.gateway-add-icon,
.gateway-section-icon,
.gateway-card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.gateway-add-icon,
.gateway-card-icon {
  background: rgba(27, 108, 168, 0.1);
  color: #1B6CA8;
}
.gateway-section-icon {
  background: #f8fafc;
  color: #64748b;
  border: 1px solid var(--card-border);
}

.gateway-preview-box {
  height: 100%;
  background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
  border: 1px dashed #cbd5e1;
  border-radius: 14px;
  padding: 1.1rem 1.25rem;
}
.gateway-preview-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #94a3b8;
  margin-bottom: 0.35rem;
}
.gateway-preview-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
}
.gateway-preview-desc {
  font-size: 0.85rem;
  color: #64748b;
  margin: 0.35rem 0 0;
}
.gateway-preview-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  color: #475569;
}
.gateway-preview-list li + li { margin-top: 0.35rem; }
.gateway-preview-fields {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid #e2e8f0;
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.5;
}

.gateway-card-head {
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  margin-bottom: 0.25rem;
  border-bottom: 1px solid var(--card-border);
}
.gateway-card-brand { display: flex; align-items: flex-start; gap: 0.875rem; }
.gateway-card-controls {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 160px;
  padding: 0.75rem 0.9rem;
  background: #f8fafc;
  border: 1px solid var(--card-border);
  border-radius: 12px;
}
.gateway-control-item .form-check-label { font-size: 0.82rem; font-weight: 500; }

.gateway-sections { display: flex; flex-direction: column; gap: 1rem; }
.gateway-section {
  padding: 1rem 1.1rem;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  background: #fff;
}
.gateway-section-accent {
  background: #f0fdf4;
  border-color: #bbf7d0;
}
.gateway-section-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #0f172a;
}
.gateway-section-hint {
  font-size: 0.78rem;
  color: #64748b;
  margin-top: 0.15rem;
}
.gateway-card-footer {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--card-border);
}

@media (max-width: 991px) {
  .gateway-card-head { flex-direction: column; }
  .gateway-card-controls { width: 100%; min-width: 0; }
}

.phone-preview {
  background: #111b21;
  border-radius: 24px;
  padding: 1rem;
  max-width: 320px;
  margin: 0 auto;
}

.phone-preview .chat-header {
  background: #202c33;
  color: #fff;
  padding: 0.75rem;
  border-radius: 12px 12px 0 0;
}

.phone-preview .chat-body {
  background: #0b141a;
  min-height: 280px;
  padding: 1rem;
  border-radius: 0 0 12px 12px;
}

.phone-preview .msg-bubble {
  background: #005c4b;
  color: #e9edef;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  max-width: 90%;
  font-size: 0.875rem;
  white-space: pre-wrap;
}

.ticker-bar {
  background: #eff6ff;
  border-bottom: 1px solid #bfdbfe;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  color: #1e40af;
}

.balance-pill {
  background: var(--primary);
  color: #fff;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.875rem;
}

.status-pulse { animation: pulse 2s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  background: #fff;
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  width: 100%;
  max-width: 440px;
  border: 1px solid var(--card-border);
}

.pricing-card {
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--card-border);
  height: 100%;
}

.pricing-card.featured {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.api-hero {
  background: var(--gradient-hero);
  padding: 4rem 0;
  color: #fff;
}

.glass-card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid rgba(255,255,255,0.2);
}

@media (max-width: 991px) {
  .app-sidebar { transform: translateX(-100%); }
  .app-sidebar.show { transform: translateX(0); }
  .app-main { margin-left: 0; }
}

.wa-nav-group .wa-nav-toggle {
  width: 100%;
  border: none;
  background: transparent;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.wa-nav-group .wa-chevron {
  font-size: 0.75rem;
  transition: transform 0.2s;
}

.wa-nav-group.open .wa-chevron { transform: rotate(180deg); }

.wa-submenu {
  display: none;
  padding-left: 0.5rem;
}

.wa-nav-group.open .wa-submenu { display: block; }

.sms-subnav .nav-link {
  font-size: 0.9rem;
  padding: 0.45rem 0.85rem;
  color: #475569;
  border-radius: 999px;
}

.sms-subnav .nav-link.active {
  background: var(--primary);
  color: #fff;
}

.wa-sub-link {
  padding-left: 2.75rem !important;
  font-size: 0.9rem;
}

.sender-table th {
  background: #f8fafc;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #64748b;
}

.badge-pending-qr { background: #fef3c7; color: #92400e; }

.alert-sender-pool {
  background: #ecfdf5;
  border: 1px solid #bbf7d0;
  color: #166534;
}

.ac-toast {
  min-width: 280px;
  border: none;
  border-radius: 12px;
}

.ac-confirm-modal .modal-content {
  border-radius: 16px;
  overflow: hidden;
}

.ac-confirm-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.ac-confirm-danger {
  background: #fee2e2;
  color: #dc2626;
}

.ac-confirm-warning {
  background: #fef3c7;
  color: #d97706;
}

.ac-confirm-primary {
  background: #dbeafe;
  color: var(--primary);
}