:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --muted:#6b7280;
  --accent:#0b74de;
  --danger:#e74646;
  --radius:10px;
  --container-width:1100px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background:linear-gradient(180deg, var(--bg), #fff);
  color:#0f172a;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:var(--container-width);margin:28px auto;padding:20px}
.header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.brand h1{margin:0;font-size:1.25rem}
.tag{margin:4px 0 0;color:var(--muted);font-size:0.9rem}
.card{background:var(--card);border-radius:var(--radius);box-shadow:0 6px 18px rgba(15,23,42,0.06);padding:18px}
.upload-card{margin-bottom:16px}
.upload-form .field{margin-bottom:12px}
input[type=file]{display:block}
.controls{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:8px;border:0;cursor:pointer;font-weight:600}
.btn.primary{background:var(--accent);color:#fff}
.btn.ghost{background:transparent;border:1px solid #e6eefc;color:var(--accent)}
.status{font-size:0.95rem;color:var(--muted)}
.preview-wrap{margin:12px 0}
.preview{max-width:220px;max-height:160px;border-radius:8px;display:block;border:1px solid #eef2f7}

.gallery-header{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:12px}
.muted{color:var(--muted);font-size:0.9rem}
.gallery{overflow-x:auto}

/* Table Styles */
.images-table{width:100%;border-collapse:collapse;font-size:0.95rem}
.images-table thead{background:#fbfdff;border-bottom:2px solid #e6eefc}
.images-table th{padding:12px;text-align:left;font-weight:600;color:#0f172a}
.sortable-header{user-select:none;transition:background 0.2s}
.sortable-header:hover{background:#eef4ff}
.sortable-header.sort-asc::after{content:' ↑';font-size:0.8em;color:var(--accent)}
.sortable-header.sort-desc::after{content:' ↓';font-size:0.8em;color:var(--accent)}
.images-table tbody tr{border-bottom:1px solid #e6eefc;transition:background 0.2s}
.images-table tbody tr:hover{background:#fbfdff}
.images-table td{padding:12px;vertical-align:middle}
.index-cell{font-weight:600;color:var(--accent);width:50px}
.preview-cell{width:80px}
.table-thumb{width:70px;height:60px;object-fit:cover;border-radius:6px;border:1px solid #eef2f7}
.event-cell{font-size:0.9rem}
.filename-cell{word-break:break-word;max-width:200px}
.size-cell{color:var(--muted);font-size:0.9rem}
.date-cell{color:var(--muted);font-size:0.9rem;white-space:nowrap}
.action-cell{width:100px}
.btn-delete{background:var(--danger);color:#fff;border:0;padding:6px 12px;border-radius:6px;cursor:pointer;font-weight:600;font-size:0.9rem}
.btn-delete:hover{opacity:0.9}
.empty-message{text-align:center;color:var(--muted);padding:20px !important}

.card .thumb{width:100%;height:140px;object-fit:cover;border-bottom-left-radius:0;border-bottom-right-radius:0}
.card .cardFooter{padding:10px;display:flex;justify-content:space-between;align-items:center}
.card .name{font-weight:600}
.card button{background:var(--danger);color:#fff;border:0;padding:6px 10px;border-radius:6px;cursor:pointer}
.card button:hover{opacity:0.95}

.footer{margin-top:18px;color:var(--muted);font-size:0.9rem;text-align:center}

/* responsive tweaks */
@media (max-width:720px){
  .container{padding:14px}
  .preview{max-width:100%;height:auto}
  .gallery{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
}

/* auth overlay */
.auth-overlay{position:fixed;inset:0;background:rgba(7,11,20,0.6);display:flex;align-items:center;justify-content:center;z-index:9999}
.auth-card{background:var(--card);padding:22px;border-radius:12px;max-width:420px;width:92%;box-shadow:0 10px 30px rgba(2,6,23,0.35);text-align:center}
.auth-card h3{margin:0 0 10px;font-size:1.1rem}
.auth-form{display:flex;flex-direction:column;gap:10px}
.auth-form input[type=password]{padding:10px;border-radius:8px;border:1px solid #e6edf8;font-size:1rem}
.auth-actions{display:flex;justify-content:center}
.auth-error{color:var(--danger);font-size:0.9rem;margin-top:6px;min-height:18px}
.auth-note{font-size:0.85rem;margin-top:10px}

@media (max-width:480px){
  .auth-card{padding:16px}
}

/* Upload form grid and preview */
.upload-grid{display:grid;grid-template-columns:1fr 340px;gap:18px;align-items:start}
.upload-fields .label{display:block;margin-bottom:6px;font-weight:600}
input#eventInput{width:100%;padding:12px;border-radius:10px;border:1px solid #e6edf8;font-size:1rem;background:linear-gradient(180deg,#fff,#fbfdff)}
input#eventInput::placeholder{color:#9aa6b2}
.upload-preview{background:#fbfdff;border-radius:8px;padding:12px;border:1px solid #eef4ff;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:160px}
.preview-note{margin-top:8px;font-size:0.9rem;color:var(--muted);text-align:center}
.preview{max-width:100%;max-height:260px;border-radius:8px;display:block;border:1px solid #eef2f7;box-shadow:0 8px 18px rgba(11,20,40,0.06)}

@media (max-width:880px){
  .upload-grid{grid-template-columns:1fr 260px}
}
@media (max-width:720px){
  .upload-grid{grid-template-columns:1fr}
  .upload-preview{order:2}
}