:root { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; }
body { margin: 0; background: #f6f8fa; color: #111; }
.container { max-width: 960px; margin: 24px auto; padding: 0 16px; }
header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
h1 { font-size: 24px; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.card { background: #fff; border: 1px solid #e1e4e8; border-radius: 8px; padding: 12px; box-shadow: 0 1px 2px rgba(0,0,0,0.04); }
.card img { width: 100%; height: 50%; object-fit: contain; border-radius: 6px; }
.item-image { width: 100%; height: auto; object-fit: contain; border-radius: 6px; }
.muted { color: #6a737d; font-size: 12px; }
form { background: #fff; border: 1px solid #e1e4e8; border-radius: 8px; padding: 12px; margin: 16px 0; }
label { display: block; font-weight: 600; margin-top: 8px; }
input[type=\"text\"], input[type=\"number\"], textarea, input[type=\"file\"] { width: 100%; padding: 8px; border: 1px solid #d1d5da; border-radius: 6px; margin-top: 4px; }
button { padding: 8px 12px; background: #0366d6; color: #fff; border: none; border-radius: 6px; cursor: pointer; margin-top: 12px; }
button:hover { background: #0257b7; }
.bids { background: #fff; border: 1px solid #e1e4e8; border-radius: 8px; padding: 12px; }
.bid { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed #eee; }
.bid:last-child { border-bottom: none; }
nav a { color: #0366d6; text-decoration: none; }
nav a:hover { text-decoration: underline; }
.nav { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.nav a, .nav button { display: inline-block; padding: 6px 10px; background: #eef3f8; border: 1px solid #d1d5da; border-radius: 999px; color: #0366d6; text-decoration: none; }
.nav a:hover, .nav button:hover { background: #e2e8f3; }
.data-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #e1e4e8; border-radius: 8px; overflow: hidden; }
.data-table th, .data-table td { padding: 10px; border-bottom: 1px solid #eee; text-align: left; }
.data-table thead th { background: #f6f8fa; font-weight: 600; }
.data-table tr:hover td { background: #f9fbfd; }
.actions { margin-top: 8px; display: flex; gap: 8px; }
.actions .btn-edit { background: #6f42c1; }
.actions .btn-edit:hover { background: #5b36a0; }
.actions .btn-delete { background: #d73a49; }
.actions .btn-delete:hover { background: #b82f3d; }