.admin-header-bar {
  background: #0b1329;
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 20px;
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.admin-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 100%;
}

.admin-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #ffffff;
}

.admin-header-logo {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #38bdf8;
  flex-shrink: 0;
}

.admin-header-titles {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.admin-brand-title {
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.2px;
  color: #ffffff;
}

.admin-brand-badge {
  background: #1e3a8a;
  color: #38bdf8;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
}

.admin-header-right {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
}

.admin-header-link {
  color: #cbd5e1;
  font-weight: 600;
  text-decoration: none;
  font-size: 12.5px;
  transition: color 0.2s ease;
}

.admin-header-link:hover {
  color: #38bdf8;
}

.admin-header-divider {
  color: #334155;
}

.admin-user-pill {
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid rgba(56, 189, 248, 0.25);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.admin-logout-btn {
  color: #f87171;
  font-weight: 700;
  text-decoration: none;
  font-size: 12.5px;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.admin-logout-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.admin-sidebar-toggle-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  cursor: pointer;
  padding: 6px;
}

.admin-sidebar-toggle-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: all 0.2s ease;
}

.admin-sidebar-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

.admin-layout {
  display: flex;
  min-height: calc(100vh - 51px);
  background: #f1f5f9;
  position: relative;
}

.admin-sidebar {
  width: 250px;
  background: #0f172a;
  color: #94a3b8;
  padding: 16px 12px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-sidebar-header {
  padding: 0 8px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 14px;
}

.admin-sidebar-header h2 {
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 2px 0;
}

.admin-sidebar-header p {
  font-size: 10.5px;
  color: #38bdf8;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0;
}

.admin-sidebar-close {
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #ffffff;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}

.admin-sidebar-close:hover {
  background: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.admin-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.admin-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  color: #cbd5e1;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.admin-nav a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.admin-nav a.active {
  background: #1e3a8a;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.4);
}

.admin-nav .badge {
  margin-left: auto;
  font-size: 10px;
  padding: 2px 7px;
}

.admin-sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: auto;
}

.admin-sidebar-footer-link {
  color: #94a3b8;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  text-decoration: none;
}

.admin-sidebar-footer-link:hover {
  color: #38bdf8;
}

.admin-sidebar-logout-link {
  color: #ef4444;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 600;
}

.admin-sidebar-logout-link:hover {
  color: #f87171;
}

.admin-sidebar-backdrop {
  display: none;
}

.admin-main {
  flex: 1;
  padding: 24px 28px;
  overflow-y: auto;
  min-width: 0; 
}

.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.admin-topbar h1 {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  margin: 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.metric-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.metric-card.blue .metric-icon { background: #dbeafe; color: #1e40af; }
.metric-card.amber .metric-icon { background: #fef3c7; color: #d97706; }
.metric-card.green .metric-icon { background: #d1fae5; color: #059669; }
.metric-card.purple .metric-icon { background: #f3e8ff; color: #7e22ce; }

.metric-info h4 {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}

.metric-value {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
}

.grid-split {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 24px;
  align-items: flex-start;
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: flex-start;
}

.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 16px;
}

.modal-dialog {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  animation: modalFadeIn 0.25s ease-out;
}

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

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

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: #f8fafc;
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

@media (max-width: 991px) {
  
  .admin-sidebar-toggle-btn {
    display: flex;
  }

  
  .hide-on-mobile {
    display: none !important;
  }

  
  .admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    height: 100vh;
    z-index: 2000;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
    overflow-y: auto;
  }

  .admin-sidebar.open {
    transform: translateX(0);
    box-shadow: 10px 0 35px rgba(0, 0, 0, 0.5);
  }

  
  .admin-sidebar-close {
    display: flex;
  }

  
  .admin-sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 19, 41, 0.7);
    backdrop-filter: blur(3px);
    z-index: 1999;
    display: none;
  }

  .admin-sidebar-backdrop.open {
    display: block;
    animation: backdropFadeIn 0.25s ease-out;
  }

  @keyframes backdropFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  .admin-main {
    padding: 16px 14px;
    width: 100%;
  }

  .admin-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .admin-topbar > div:last-child {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
  }

  .admin-topbar .btn {
    flex: 1 1 auto;
    text-align: center;
    justify-content: center;
  }

  .grid-split,
  .grid-2col {
    grid-template-columns: 1fr !important;
    gap: 16px;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
}

@media (max-width: 576px) {
  .admin-header-bar {
    padding: 8px 12px;
  }

  .admin-brand-title {
    font-size: 13px;
  }

  .admin-brand-badge {
    font-size: 9px;
    padding: 1px 5px;
  }

  .hide-on-xs {
    display: none !important;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .metric-card {
    padding: 14px;
  }

  .metric-icon {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .metric-value {
    font-size: 20px;
  }

  .admin-main {
    padding: 12px 10px;
  }

  .modal-backdrop {
    padding: 8px;
  }

  .modal-dialog {
    max-width: 100%;
    margin: 0;
  }
}