:root{--navy:#1b3b6f;--navy-dark:#122a52;--maroon:#8c1933;--maroon-dark:#6e1327;--rose:#e8d0d8;--bg:#f4f5f7;--surface:#fff;--border:#d9dde3;--text:#1e2430;--text-muted:#5b6472;--amber:#f5a623;--amber-bg:#fff6e5;--green:#1e8e3e;--danger:#c62828}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit;font-size:14px}a{color:var(--navy)}.btn{background:var(--navy);color:#fff;border:1px solid #0000;border-radius:6px;align-items:center;gap:6px;padding:9px 16px;font-size:14px;font-weight:600;transition:background .15s;display:inline-flex}.btn:hover{background:var(--navy-dark)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--navy);border-color:var(--border)}.btn-secondary:hover{background:#eef1f5}.btn-danger{background:var(--danger)}.btn-danger:hover{background:#a01f1f}.btn-maroon{background:var(--maroon)}.btn-maroon:hover{background:var(--maroon-dark)}.card-surface{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:24px}.field-group{flex-direction:column;gap:4px;margin-bottom:14px;display:flex}.field-group label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;font-size:12px;font-weight:600}.field-group input,.field-group textarea,.field-group select{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:6px;padding:9px 10px}.field-group.flagged input,.field-group.flagged textarea,.field-group.flagged select{border-color:var(--amber);background:var(--amber-bg)}.flag-note{color:#9a6b00;font-size:11px;font-weight:600}.app-shell{flex-direction:column;min-height:100%;display:flex}.app-header{background:var(--surface);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:10px 24px;display:flex}.app-header .brand{align-items:center;gap:10px;display:flex}.app-header .brand img{height:28px}.app-header .brand-title{color:var(--navy);font-size:15px;font-weight:700}.app-nav{align-items:center;gap:4px;display:flex}.app-nav a{color:var(--text-muted);border-radius:6px;padding:7px 12px;font-size:14px;font-weight:600;text-decoration:none}.app-nav a.active,.app-nav a:hover{background:var(--rose);color:var(--maroon-dark)}.app-main{flex:1;width:100%;max-width:1100px;margin:0 auto;padding:28px 24px}.login-page{background:linear-gradient(180deg, var(--navy) 0%, var(--navy-dark) 100%);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--surface);text-align:center;border-radius:12px;width:100%;max-width:380px;padding:40px;box-shadow:0 12px 40px #00000040}.login-card img{max-width:220px;margin-bottom:24px}.login-card h1{color:var(--text-muted);margin:0 0 20px;font-size:16px;font-weight:600}.error-text{color:var(--danger);margin:8px 0;font-size:13px}table.data-table{border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:8px;width:100%;overflow:hidden}table.data-table th{background:var(--navy);color:#fff;text-align:left;text-transform:uppercase;letter-spacing:.03em;padding:10px 12px;font-size:12px}table.data-table td{border-top:1px solid var(--border);vertical-align:top;padding:10px 12px;font-size:14px}table.data-table tr:hover td{background:#fafbfc}.badge{text-transform:uppercase;border-radius:999px;padding:3px 8px;font-size:11px;font-weight:700;display:inline-block}.badge-confirmed{color:var(--green);background:#e5f5ea}.badge-review{background:var(--amber-bg);color:#9a6b00}.toolbar{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;display:flex}.exhibition-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;display:grid}.exhibition-tile{background:var(--surface);border:1px solid var(--border);text-align:left;cursor:pointer;border-radius:10px;padding:20px;transition:box-shadow .15s,border-color .15s}.exhibition-tile:hover{border-color:var(--maroon);box-shadow:0 4px 14px #00000014}.exhibition-tile h3{color:var(--navy);margin:0 0 6px}.exhibition-tile p{color:var(--text-muted);margin:0;font-size:13px}.upload-drop{border:2px dashed var(--border);text-align:center;background:var(--surface);border-radius:10px;padding:40px 20px}.upload-preview{border:1px solid var(--border);border-radius:8px;max-width:100%;max-height:340px;margin:16px 0}.review-grid{grid-template-columns:1fr 1fr;gap:0 24px;display:grid}@media (width<=720px){.review-grid{grid-template-columns:1fr}.app-header{flex-direction:column;align-items:flex-start;gap:10px}.app-main{padding:16px}}.spinner{border:2px solid #fff6;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:.7s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}