:root {
  --bg-dark: #0D1117;
  --bg-card: #161B22;
  --border-color: #30363D;
  --primary-teal: #2FBFBF;
  --primary-teal-hover: #259999;
  --text-main: #C9D1D9;
  --text-muted: #8B949E;
  --accent-gold: #F0A30A;
  --success: #3FB950;
  --danger: #F85149;
  --warning: #D29922;
  --info: #58A6FF;
  --font-main: 'Outfit', sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.5;
}

/* Admin Layout */
.admin-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  background-color: var(--bg-dark);
  border-right: 1px solid var(--border-color);
  position: fixed;
  width: 260px;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.sidebar-nav {
  list-style: none;
  padding: 20px 10px;
  flex: 1;
}

.sidebar-section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 15px 0 5px 10px;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 15px;
  color: var(--text-main);
  text-decoration: none;
  border-radius: 8px;
  margin-bottom: 5px;
  transition: all 0.2s;
}

.sidebar-nav-item:hover, .sidebar-nav-item.active {
  background-color: rgba(47, 191, 191, 0.1);
  color: var(--primary-teal);
}

.sidebar-nav-item svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
}

/* Main Area */
.admin-main {
  grid-column: 2;
  display: flex;
  flex-direction: column;
}

/* Topbar */
.admin-topbar {
  height: 60px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  background-color: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 90;
}

.topbar-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 15px;
}

/* Content Area */
.admin-content {
  padding: 30px;
  flex: 1;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.kpi-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}

.kpi-card.blue::before { background-color: var(--info); }
.kpi-card.green::before { background-color: var(--success); }
.kpi-card.yellow::before { background-color: var(--warning); }
.kpi-card.red::before { background-color: var(--danger); }
.kpi-card.teal::before { background-color: var(--primary-teal); }

.kpi-header {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.kpi-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
}

/* Charts */
.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

/* Prevent canvas from growing unboundedly */
.chart-card canvas {
  max-height: 300px !important;
  width: 100% !important;
}

.chart-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
}

.chart-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: #fff;
}

/* Tables & Cards */
.admin-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 30px;
}

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

.admin-table-toolbar {
  padding: 15px 20px;
  display: flex;
  gap: 15px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(0,0,0,0.2);
}

.admin-table-wrapper {
  overflow-x: auto;
}

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

th, td {
  padding: 12px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
}

td {
  font-size: 0.95rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-main);
  font-size: 0.9rem;
}

.admin-input, .admin-select {
  width: 100%;
  padding: 10px 15px;
  background-color: #0D1117;
  border: 1px solid var(--border-color);
  color: #fff;
  border-radius: 6px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.admin-input:focus, .admin-select:focus {
  border-color: var(--primary-teal);
}

.admin-btn {
  padding: 10px 20px;
  border-radius: 6px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: opacity 0.2s;
}

.admin-btn:hover {
  opacity: 0.9;
}

.admin-btn-primary {
  background-color: var(--primary-teal);
  color: #000;
}

.admin-btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.admin-btn-danger {
  background-color: rgba(248, 81, 73, 0.1);
  color: var(--danger);
  border: 1px solid var(--danger);
}

/* Badges */
.badge {
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-teal { background: rgba(47, 191, 191, 0.15); color: var(--primary-teal); }
.badge-gold { background: rgba(240, 163, 10, 0.15); color: var(--accent-gold); }
.badge-green { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.badge-red { background: rgba(248, 81, 73, 0.15); color: var(--danger); }

/* Utilities */
.stock-bar {
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 5px;
}
.stock-bar-fill {
  height: 100%;
  border-radius: 3px;
}

.product-img-small {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  object-fit: cover;
  background: var(--border-color);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}
.modal-overlay.active {
  display: flex;
}
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
}
.modal-body {
  padding: 20px;
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

/* Tabs */
.admin-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
  gap: 20px;
}
.admin-tab {
  padding: 10px 0;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.admin-tab.active {
  color: var(--primary-teal);
  border-bottom-color: var(--primary-teal);
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.2s;
}
.upload-zone:hover {
  border-color: var(--primary-teal);
}

@media (max-width: 768px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .admin-main {
    grid-column: 1;
  }
  .chart-grid {
    grid-template-columns: 1fr;
  }
}