.hidden { display: none !important; }
.message { margin: 0 0 16px; padding: 12px 14px; border-radius: 8px; font-size: 14px; display: none; }
.message.show { display: block; }
.message.success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.message.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.drop { border: 2px dashed #d1d5db; border-radius: 10px; padding: 20px; text-align: center; cursor: pointer; background: #fafafa; margin-bottom: 16px; }
.drop.over { border-color: #2563eb; background: #eff6ff; }
.drop input { display: none; }
.drop-text { font-size: 14px; color: #6b7280; }
.drop-text strong { color: #2563eb; }
.drop-hint, .file-info { font-size: 12px; color: #9ca3af; margin-top: 6px; }
#submitPanel { background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 16px; }
#submitPanel button, #downloadMissing { width: auto; }
#downloadMissing { background: #fff; color: #111827; border: 1px solid #d1d5db; border-radius: 8px; padding: 10px 14px; font-weight: 600; cursor: pointer; }