/* ============================================
   ADMIN PANEL CSS FRAMEWORK
   Modern Design System for Backend
   ============================================ */

/* ============================================
   CSS VARIABLES / DESIGN TOKENS
   ============================================ */
:root {
    /* Primary Colors */
    --admin-primary: #2196F3;
    --admin-primary-light: #64B5F6;
    --admin-primary-dark: #1976D2;

    /* Accent Colors */
    --admin-accent: #00BCD4;
    --admin-success: #4CAF50;
    --admin-warning: #FF9800;
    --admin-danger: #F44336;

    /* Gradients */
    --admin-gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --admin-gradient-cyan: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    --admin-gradient-orange: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --admin-gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);

    /* Background Colors */
    --admin-bg: #f0f5ff;
    --admin-bg-card: #ffffff;
    --admin-bg-sidebar: linear-gradient(180deg, #e8f4fc 0%, #f0f8ff 100%);

    /* Text Colors */
    --admin-text-primary: #1e293b;
    --admin-text-secondary: #64748b;
    --admin-text-muted: #94a3b8;

    /* Shadows */
    --admin-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --admin-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --admin-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --admin-shadow-card: 0 2px 8px rgba(33, 150, 243, 0.1);

    /* Border Radius */
    --admin-radius-sm: 8px;
    --admin-radius-md: 12px;
    --admin-radius-lg: 16px;
    --admin-radius-xl: 24px;

    /* Transitions */
    --admin-transition: all 0.3s ease;
}

/* ============================================
   ADMIN LAYOUT
   ============================================ */
.admin-wrapper {
    background: var(--admin-bg);
    min-height: 100vh;
    padding: 0;
}

.admin-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.admin-content {
    flex: 1;
    padding: 24px;
}

/* ============================================
   ADMIN HEADER
   ============================================ */
.admin-header {
    background: var(--admin-bg-card);
    border-bottom: 1px solid #e2e8f0;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.admin-header-title i {
    color: var(--admin-primary);
    font-size: 1.5rem;
}

.admin-header-title h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--admin-text-primary);
    margin: 0;
}

.admin-header-subtitle {
    font-size: 0.875rem;
    color: var(--admin-text-secondary);
    margin: 0;
}

.admin-header-actions {
    display: flex;
    gap: 12px;
}

/* ============================================
   ADMIN SIDEBAR
   ============================================ */
.admin-sidebar {
    background: var(--admin-bg-sidebar);
    border-radius: var(--admin-radius-lg);
    padding: 16px;
    height: fit-content;
    position: sticky;
    top: 20px;
}

.admin-sidebar-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--admin-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px 8px;
    margin: 0;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--admin-radius-md);
    color: var(--admin-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--admin-transition);
    margin-bottom: 4px;
}

.admin-nav-item:hover {
    background: rgba(33, 150, 243, 0.1);
    color: var(--admin-primary);
}

.admin-nav-item.active {
    background: var(--admin-primary);
    color: white;
    box-shadow: var(--admin-shadow-md);
}

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

/* ============================================
   WELCOME SECTION
   ============================================ */
.admin-welcome {
    background: var(--admin-bg-card);
    border-radius: var(--admin-radius-lg);
    padding: 20px 24px;
    margin-bottom: 24px;
    box-shadow: var(--admin-shadow-card);
}

.admin-welcome-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--admin-primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.admin-welcome h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--admin-text-primary);
    margin: 0 0 4px;
}

.admin-welcome p {
    color: var(--admin-text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

/* ============================================
   HELP BOX / WIKI
   ============================================ */
.admin-help-box {
    background: linear-gradient(135deg, #e0f4ff 0%, #f0f9ff 100%);
    border: 1px solid #bae6fd;
    border-radius: var(--admin-radius-lg);
    padding: 20px 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-help-box i {
    font-size: 1.5rem;
    color: var(--admin-primary);
}

.admin-help-box h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--admin-text-primary);
    margin: 0 0 4px;
}

.admin-help-box p {
    font-size: 0.875rem;
    color: var(--admin-text-secondary);
    margin: 0;
}

.admin-help-box a {
    color: var(--admin-primary);
    font-weight: 500;
    text-decoration: none;
}

.admin-help-box a:hover {
    text-decoration: underline;
}

/* ============================================
   STAT CARDS
   ============================================ */
.admin-stat-card {
    background: var(--admin-bg-card);
    border-radius: var(--admin-radius-lg);
    padding: 20px 24px;
    box-shadow: var(--admin-shadow-card);
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
    transition: var(--admin-transition);
    height: 100%;
}

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

.admin-stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.admin-stat-card-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--admin-text-secondary);
    margin: 0;
}

.admin-stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--admin-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: var(--admin-gradient-cyan);
}

.admin-stat-card-icon.gradient-purple {
    background: var(--admin-gradient-primary);
}

.admin-stat-card-icon.gradient-orange {
    background: var(--admin-gradient-orange);
}

.admin-stat-card-icon.gradient-blue {
    background: var(--admin-gradient-blue);
}

.admin-stat-card-icon.solid-blue {
    background: var(--admin-primary);
}

.admin-stat-card-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--admin-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.admin-stat-card-bg-icon {
    position: absolute;
    right: -10px;
    bottom: -10px;
    font-size: 80px;
    color: var(--admin-primary);
    opacity: 0.08;
    z-index: 0;
}

/* ============================================
   CHART CARDS
   ============================================ */
.admin-chart-card {
    background: var(--admin-bg-card);
    border-radius: var(--admin-radius-lg);
    padding: 24px;
    box-shadow: var(--admin-shadow-card);
    border: 1px solid #e2e8f0;
    margin-bottom: 24px;
}

.admin-chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.admin-chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--admin-text-primary);
    margin: 0;
}

.admin-chart-note {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    margin-top: 8px;
}

.admin-chart-note a {
    color: var(--admin-primary);
    text-decoration: none;
}

.admin-chart-note a:hover {
    text-decoration: underline;
}

/* ============================================
   ADMIN BUTTONS
   ============================================ */
.admin-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--admin-radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: var(--admin-transition);
    text-decoration: none;
}

.admin-btn-primary {
    background: var(--admin-primary);
    color: white;
}

.admin-btn-primary:hover {
    background: var(--admin-primary-dark);
    color: white;
}

.admin-btn-outline {
    background: transparent;
    border: 1px solid #e2e8f0;
    color: var(--admin-text-secondary);
}

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

.admin-btn-success {
    background: var(--admin-success);
    color: white;
}

.admin-btn-danger {
    background: var(--admin-danger);
    color: white;
}

.admin-btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.admin-btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

/* ============================================
   ADMIN TABLES
   ============================================ */
.admin-table-wrapper {
    background: var(--admin-bg-card);
    border-radius: var(--admin-radius-lg);
    box-shadow: var(--admin-shadow-card);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.admin-table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid #e2e8f0;
}

.admin-table-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--admin-text-primary);
    margin: 0;
}

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

.admin-table thead {
    background: #f8fafc;
}

.admin-table th {
    padding: 14px 20px;
    text-align: left;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--admin-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid #e2e8f0;
}

.admin-table td {
    padding: 16px 20px;
    font-size: 0.9rem;
    color: var(--admin-text-primary);
    border-bottom: 1px solid #f1f5f9;
}

.admin-table tbody tr:hover {
    background: #f8fafc;
}

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

/* ============================================
   ADMIN FORMS
   ============================================ */
.admin-form-group {
    margin-bottom: 20px;
}

.admin-form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--admin-text-primary);
    margin-bottom: 8px;
}

.admin-form-label span {
    color: var(--admin-text-muted);
    font-weight: 400;
}

.admin-form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: var(--admin-radius-md);
    font-size: 0.9rem;
    color: var(--admin-text-primary);
    transition: var(--admin-transition);
}

.admin-form-input:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.15);
}

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

.admin-form-textarea {
    min-height: 120px;
    resize: vertical;
}

.admin-form-select {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 16px center;
    padding-right: 40px;
    appearance: none;
}

.admin-form-hint {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    margin-top: 6px;
}

/* Toggle Switch */
.admin-toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
}

.admin-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.admin-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e2e8f0;
    transition: var(--admin-transition);
    border-radius: 26px;
}

.admin-toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: var(--admin-transition);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.admin-toggle input:checked+.admin-toggle-slider {
    background-color: var(--admin-primary);
}

.admin-toggle input:checked+.admin-toggle-slider:before {
    transform: translateX(22px);
}

/* ============================================
   STATUS BADGES
   ============================================ */
.admin-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.admin-badge-active {
    background: #dcfce7;
    color: #16a34a;
}

.admin-badge-sold {
    background: #fee2e2;
    color: #dc2626;
}

.admin-badge-pending {
    background: #fef3c7;
    color: #d97706;
}

.admin-badge-gift {
    background: #f3e8ff;
    color: #9333ea;
}

/* ============================================
   ADMIN CARDS (Content Cards)
   ============================================ */
.admin-card {
    background: var(--admin-bg-card);
    border-radius: var(--admin-radius-lg);
    box-shadow: var(--admin-shadow-card);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.admin-card-header {
    padding: 20px 24px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--admin-text-primary);
    margin: 0;
}

.admin-card-body {
    padding: 24px;
}

.admin-card-footer {
    padding: 16px 24px;
    border-top: 1px solid #e2e8f0;
    background: #f8fafc;
}

/* ============================================
   PRODUCT ITEM (For Product List)
   ============================================ */
.admin-product-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-radius: var(--admin-radius-md);
    background: var(--admin-bg-card);
    border: 1px solid #e2e8f0;
    margin-bottom: 12px;
    transition: var(--admin-transition);
}

.admin-product-item:hover {
    box-shadow: var(--admin-shadow-sm);
}

.admin-product-image {
    width: 56px;
    height: 56px;
    border-radius: var(--admin-radius-sm);
    object-fit: cover;
}

.admin-product-info {
    flex: 1;
}

.admin-product-name {
    font-weight: 600;
    color: var(--admin-primary);
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.admin-product-category {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
}

.admin-product-actions {
    display: flex;
    gap: 8px;
}

/* ============================================
   IMAGE UPLOAD
   ============================================ */
.admin-image-upload {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.admin-image-preview {
    width: 80px;
    height: 80px;
    border-radius: var(--admin-radius-md);
    object-fit: cover;
    border: 2px solid #e2e8f0;
}

.admin-image-add {
    width: 80px;
    height: 80px;
    border: 2px dashed #e2e8f0;
    border-radius: var(--admin-radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
    transition: var(--admin-transition);
    background: #f8fafc;
}

.admin-image-add:hover {
    border-color: var(--admin-primary);
    color: var(--admin-primary);
}

.admin-image-add i {
    font-size: 1.25rem;
    color: var(--admin-text-muted);
}

.admin-image-add span {
    font-size: 0.75rem;
    color: var(--admin-text-muted);
}

/* ============================================
   SEARCH & FILTERS
   ============================================ */
.admin-search-box {
    position: relative;
}

.admin-search-box input {
    padding-left: 44px;
}

.admin-search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--admin-text-muted);
}

.admin-filter-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.admin-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--admin-text-secondary);
    background: var(--admin-bg-card);
    cursor: pointer;
    transition: var(--admin-transition);
}

.admin-filter-btn:hover,
.admin-filter-btn.active {
    border-color: var(--admin-primary);
    color: var(--admin-primary);
    background: #eff6ff;
}

/* ============================================
   PAGINATION
   ============================================ */
.admin-pagination {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    margin-top: 24px;
}

.admin-pagination-item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--admin-radius-sm);
    border: 1px solid #e2e8f0;
    color: var(--admin-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--admin-transition);
}

.admin-pagination-item:hover {
    border-color: var(--admin-primary);
    color: var(--admin-primary);
}

.admin-pagination-item.active {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: white;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 992px) {
    .admin-sidebar {
        position: relative;
        top: 0;
        margin-bottom: 24px;
    }

    .admin-stat-card-value {
        font-size: 1.75rem;
    }
}

@media (max-width: 768px) {
    .admin-container {
        padding: 12px;
    }

    .admin-header {
        flex-direction: column;
        gap: 12px;
    }

    .admin-stat-card {
        padding: 16px;
    }

    .admin-chart-card {
        padding: 16px;
    }
}