@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface-2: #1a1a2e;
  --primary: #2ecc71;
  --primary-dark: #27ae60;
  --primary-glow: rgba(46, 204, 113, 0.2);
  --text: #e0e0e0;
  --text-muted: #8888aa;
  --border: #2a2a3e;
  --border-hover: #3a3a5e;
  --danger: #e74c3c;
  --warning: #f39c12;
  --info: #3498db;
  --success: #2ecc71;
  
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 16px 32px rgba(0,0,0,0.6);
  --glass-bg: rgba(18, 18, 26, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-round: 50%;
  
  --transition: all 0.3s ease;
  
  --sidebar-width: 260px;
  --header-height: 70px;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 14px;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Hind Siliguri', sans-serif;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

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

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

ul {
  list-style: none;
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  font-family: 'Hind Siliguri', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-logo span {
  color: var(--text);
}

.sidebar-nav {
  flex: 1;
  padding: 1.5rem 0;
  overflow-y: auto;
}

.sidebar-nav::-webkit-scrollbar {
  width: 5px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--surface-2);
  border-radius: var(--radius-lg);
}

.nav-item {
  margin-bottom: 0.25rem;
  padding: 0 1rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: var(--transition);
  font-weight: 500;
}

.nav-link i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

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

.sidebar-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-round);
  background-color: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-weight: 600;
  border: 2px solid var(--primary);
}

.user-info .name {
  font-weight: 600;
  display: block;
}

.user-info .role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.top-header {
  height: var(--header-height);
  background-color: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 90;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
}

.page-title {
  font-size: 1.25rem;
  margin: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.header-action {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.header-action:hover {
  color: var(--primary);
}

.notification-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background-color: var(--danger);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Content Area */
.content-area {
  padding: 2rem;
  flex: 1;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--primary);
  opacity: 0;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background-color: var(--primary-glow);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-details {
  flex: 1;
}

.stat-title {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.stat-trend {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.trend-up {
  color: var(--success);
}

.trend-down {
  color: var(--danger);
}

/* Data Tables */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  margin: 0;
  font-size: 1.1rem;
}

.card-body {
  padding: 1.5rem;
}

.table-responsive {
  overflow-x: auto;
}

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

.data-table th {
  padding: 1rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: var(--transition);
}

.data-table tbody tr:hover {
  background-color: var(--surface-2);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* Product/User Table Specifics */
.item-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.item-img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  object-fit: cover;
  background-color: var(--surface-2);
}

.item-name {
  font-weight: 600;
  color: var(--text);
}

.item-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Badges / Pills */
.badge {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background-color: rgba(46, 204, 113, 0.15);
  color: var(--success);
  border: 1px solid rgba(46, 204, 113, 0.3);
}

.badge-warning {
  background-color: rgba(243, 156, 18, 0.15);
  color: var(--warning);
  border: 1px solid rgba(243, 156, 18, 0.3);
}

.badge-danger {
  background-color: rgba(231, 76, 60, 0.15);
  color: var(--danger);
  border: 1px solid rgba(231, 76, 60, 0.3);
}

.badge-info {
  background-color: rgba(52, 152, 219, 0.15);
  color: var(--info);
  border: 1px solid rgba(52, 152, 219, 0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  font-size: 0.9rem;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

.btn-icon {
  padding: 0.4rem;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--primary-glow);
}

.btn-danger {
  background-color: rgba(231, 76, 60, 0.1);
  color: var(--danger);
  border-color: rgba(231, 76, 60, 0.3);
}

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

.table-actions {
  display: flex;
  gap: 0.5rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  margin: 0;
  font-size: 1.25rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text);
  font-size: 0.9rem;
}

.image-upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background-color: var(--surface-2);
}

.image-upload-zone:hover {
  border-color: var(--primary);
  background-color: rgba(46, 204, 113, 0.05);
}

.upload-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.5rem;
}

.upload-placeholder p {
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.upload-placeholder small {
  color: var(--text-muted);
  opacity: 0.7;
}

#image-preview {
  max-width: 200px;
  max-height: 150px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23e0e0e0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-row {
  display: flex;
  gap: 1rem;
}

.form-col {
  flex: 1;
}

/* Image Upload Zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background-color: var(--surface-2);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--primary);
  background-color: var(--primary-glow);
}

.upload-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.upload-text {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.upload-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  gap: 1.5rem;
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.75rem 0;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.toast {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-md);
  transform: translateX(120%);
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
  transform: translateX(0);
}

.toast-icon {
  font-size: 1.25rem;
}

.toast.success {
  border-left: 4px solid var(--success);
}
.toast.success .toast-icon { color: var(--success); }

.toast.error {
  border-left: 4px solid var(--danger);
}
.toast.error .toast-icon { color: var(--danger); }

.toast.warning {
  border-left: 4px solid var(--warning);
}
.toast.warning .toast-icon { color: var(--warning); }

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.toast-msg {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Loading Spinner */
.spinner-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(46, 204, 113, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.page-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background-color: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

.page-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.page-btn.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

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

/* Responsive */
@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    position: fixed;
    z-index: 1000;
    height: 100vh;
  }
  
  .sidebar.show,
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .mobile-toggle, .mobile-menu-toggle, .menu-toggle {
    display: block !important;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    flex-direction: column;
    gap: 0;
  }
  
  .header-right .user-info {
    display: none;
  }

  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .data-table {
    min-width: 600px;
  }

  .modal-content {
    width: 95% !important;
    max-width: 95% !important;
    margin: 1rem;
    max-height: 90vh;
    overflow-y: auto;
  }

  .tab-header {
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
  }

  .tab-header .btn {
    width: 100%;
  }

  .btn-sm {
    padding: 0.3rem 0.5rem;
    font-size: 0.75rem;
  }

  .top-header {
    padding: 0.75rem 1rem;
  }

  .page-title {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .stat-card {
    padding: 0.75rem;
  }
  .stat-value {
    font-size: 1.5rem;
  }
  .modal-content {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0;
    border-radius: 0;
    min-height: 100vh;
  }
}