:root{font-family:Heebo,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.4}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:linear-gradient(180deg,#14cefb,#075e9f)}.page{min-height:100%;display:flex;align-items:center;justify-content:center;padding:1rem}.card{width:min(28rem,100%);background:#fff;border-radius:12px;box-shadow:0 16px 50px #0003;padding:1.25rem;text-align:center}.card h1{margin-top:0;margin-bottom:.5rem;color:#1d3557;font-size:1.4rem}.hint{margin-top:0;color:#516276;font-size:.9rem}.file-input-label{display:inline-block;padding:.6rem .9rem;border-radius:8px;background:#eef4fb;color:#1d3557;font-weight:600;cursor:pointer;margin-bottom:.75rem}input[type=file]{display:none}.preview{width:100%;max-height:17rem;object-fit:contain;border-radius:10px;border:1px solid #dde3ec;margin-bottom:.75rem}.upload-button{width:100%;border:0;border-radius:8px;padding:.7rem;background:#1d3557;color:#fff;font-weight:700;cursor:pointer}.upload-button:disabled{cursor:not-allowed;opacity:.65}.error{color:#b00020;margin-top:0;margin-bottom:.75rem}.success{color:#1a7f37;font-weight:600;margin-bottom:0}