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.2s}.btn-primary:hover{background-color:#0056b3}.alert{padding:.75rem;margin-bottom:1rem;border-radius:4px}.alert-danger{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.dashboard-layout{display:flex;min-height:100vh}.sidebar{width:250px;background-color:#343a40;color:#fff;padding:1rem;display:flex;flex-direction:column}.sidebar-brand{font-size:1.5rem;font-weight:700;margin-bottom:2rem;text-align:center}.nav-item{padding:.75rem 1rem;color:#fffc;text-decoration:none;border-radius:4px;margin-bottom:.5rem;cursor:pointer}.nav-item:hover,.nav-item.active{background-color:#ffffff1a;color:#fff}.main-content{flex:1;background-color:#f4f6f9;padding:2rem;overflow-y:auto}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:var(--card-shadow)}.stat-value{font-size:2rem;font-weight:700;color:var(--primary-color)}.gallery-controls{background:#fff;padding:1.5rem;border-radius:8px;margin-bottom:2rem;box-shadow:var(--card-shadow)}.upload-form{display:flex;gap:1rem;align-items:flex-end;flex-wrap:wrap}.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-auto-rows:200px;grid-auto-flow:dense;gap:1rem}.gallery-item{position:relative;border-radius:8px;overflow:hidden;box-shadow:var(--card-shadow)}.gallery-item img{width:100%;height:100%;object-fit:cover}.gallery-item-overlay{position:absolute;bottom:0;left:0;right:0;background:#000000b3;padding:.5rem;display:flex;justify-content:flex-end;opacity:0;transition:opacity .2s}.gallery-item:hover .gallery-item-overlay{opacity:1}.layout-square{grid-column:span 1;grid-row:span 1}.layout-wide{grid-column:span 2;grid-row:span 1}.layout-tall{grid-column:span 1;grid-row:span 2}.layout-large{grid-column:span 2;grid-row:span 2}.table-container{background:#fff;border-radius:8px;box-shadow:var(--card-shadow);overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:1rem;text-align:left;border-bottom:1px solid #eee}th{background-color:#f8f9fa;font-weight:600}.btn-sm{padding:.25rem .5rem;font-size:.875rem;margin-right:.5rem}.btn-danger{background-color:var(--danger-color);color:#fff;border:none;border-radius:4px;cursor:pointer}:root{--text-heading: #111827;--text-primary: #111827;--text-secondary: #4b5563;--text-link: #2563eb;--text-link-hover: #1e40af;--bg-secondary: #f3f4f6;--bg-primary: #ffffff;--bg-card: #ffffff;--border-primary: #e2e8f0}.dark{--text-heading: #ffffff;--text-primary: #e2e8f0;--text-secondary: #9ca3af;--text-link: #60a5fa;--text-link-hover: #93c5fd;--bg-secondary: #1f2937;--bg-primary: #0f172a;--bg-card: #1e293b;--border-primary: #374151}body{background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s,color .3s}