/**
 * PromptVault Admin Panel Stylesheet
 * Custom Dark Navy + Blue SaaS Design
 * Mobile-First & Fully Responsive
 */

:root {
    --bg-main: #0b0f19;
    --bg-card: #111827;
    --bg-card-hover: #172033;
    --bg-input: #1e293b;
    --border-color: #1f2937;
    --border-focus: #3b82f6;
    
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: rgba(59, 130, 246, 0.15);
    
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.15);
    
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.15);
    
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.15);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --sidebar-width: 260px;
    --header-height: 68px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #60a5fa;
}

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

.admin-sidebar {
    width: var(--sidebar-width);
    background: #0d121f;
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Sidebar Branding */
.sidebar-brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
}

.brand-title {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
}

.brand-title span {
    color: #60a5fa;
}

/* Sidebar Menu */
.sidebar-menu {
    flex: 1;
    padding: 20px 14px;
    overflow-y: auto;
}

.menu-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 10px 12px 6px;
    margin-top: 10px;
}

.menu-label:first-child {
    margin-top: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    margin-bottom: 3px;
}

.nav-item svg {
    width: 18px;
    height: 18px;
    opacity: 0.8;
}

.nav-item:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
    color: #fff;
    background: var(--primary-light);
    border-left: 3px solid var(--primary);
    font-weight: 600;
}

.nav-item.active svg {
    color: #60a5fa;
    opacity: 1;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
}

.admin-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #1e293b;
    border: 1px solid #334155;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #93c5fd;
    font-size: 14px;
}

.user-meta {
    flex: 1;
    overflow: hidden;
}

.user-meta .name {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-meta .role {
    font-size: 11px;
    color: var(--text-muted);
}

/* Header */
.admin-header {
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
}

.page-breadcrumb {
    font-size: 14px;
    color: var(--text-muted);
}

.page-breadcrumb strong {
    color: #fff;
    font-weight: 600;
}

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

.btn-header-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-header-action:hover {
    border-color: #475569;
    color: #fff;
}

/* Content Container */
.admin-content {
    flex: 1;
    padding: 28px;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.page-header-title h1 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.page-header-title p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    text-decoration: none;
    min-height: 42px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
    min-height: 34px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}

.btn-secondary {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: #273549;
    border-color: #475569;
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-danger-outline {
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #f87171;
}

.btn-danger-outline:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    margin-bottom: 24px;
    overflow: hidden;
}

.card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body {
    padding: 24px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-card);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.blue { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.stat-icon.emerald { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.stat-icon.amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.stat-icon.purple { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }
.stat-icon.rose { background: rgba(244, 63, 94, 0.15); color: #fb7185; }

.stat-info .stat-value {
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.stat-info .stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 8px;
}

label .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 11px 14px;
    color: #fff;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

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' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    padding-right: 40px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 5px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

.table th {
    background: #0f172a;
    padding: 14px 18px;
    font-weight: 600;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.table td {
    padding: 16px 18px;
    border-bottom: 1px solid var(--border-color);
    color: #e2e8f0;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-published, .badge-active {
    background: var(--success-light);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-draft {
    background: var(--warning-light);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-archived, .badge-inactive {
    background: rgba(148, 163, 184, 0.15);
    color: #94a3b8;
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.badge-featured {
    background: rgba(139, 92, 246, 0.15);
    color: #c084fc;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

/* Thumbnails */
.table-thumb {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    object-fit: cover;
    background: #1e293b;
    border: 1px solid var(--border-color);
}

/* Image Upload Preview Box */
.image-upload-wrapper {
    background: #0f172a;
    border: 2px dashed #334155;
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    position: relative;
    transition: all 0.2s;
}

.image-upload-wrapper:hover {
    border-color: var(--primary);
}

.preview-container {
    max-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 12px;
    background: #1e293b;
}

.preview-container img {
    max-width: 100%;
    max-height: 180px;
    object-fit: contain;
}

/* Flash Messages */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #34d399;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #f87171;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.4);
    color: #fbbf24;
}

/* Filter Bar */
.filter-bar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
}

.filter-item {
    flex: 1;
    min-width: 160px;
}

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

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

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
}

.page-link:hover {
    border-color: #475569;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 50px 20px;
}

.empty-state-icon {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto 20px auto;
}

/* Responsive */
@media (max-width: 991px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.7);
        z-index: 90;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
}