*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #ffffff;--surface: #f5f5f5;--surface2: #ebebeb;--border: #d0d0d0;--accent: #2563eb;--accent-hover: #1d4ed8;--text: #111111;--text-muted: #666666;--radius: 8px;--radius-sm: 4px}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;line-height:1.5;min-height:100vh}.app{max-width:720px;margin:0 auto;padding:48px 24px 80px}.back-link{display:inline-block;color:var(--text-muted);text-decoration:none;font-size:13px;font-weight:600;margin-bottom:24px}.back-link:hover{color:var(--accent)}.header{text-align:center;margin-bottom:40px}.header h1{font-size:2rem;font-weight:700;letter-spacing:-.02em}.subtitle{color:var(--text-muted);margin-top:8px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);padding:56px 24px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;outline:none}.dropzone:hover,.dropzone:focus{border-color:var(--accent);background:var(--surface2)}.dropzone.dragover{border-color:var(--accent);background:var(--surface2)}.dropzone__inner{pointer-events:none}.dropzone__icon{color:var(--text-muted);margin:0 auto 16px;display:block}.dropzone__text{font-size:1rem;color:var(--text)}.dropzone__browse{color:var(--accent);text-decoration:underline}.dropzone__hint{color:var(--text-muted);font-size:12px;margin-top:6px}.result{margin-top:28px}.result__file{display:flex;align-items:center;gap:10px;margin-bottom:16px}.result__name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.result__size{color:var(--text-muted);font-size:13px;flex-shrink:0}.hash-list{display:flex;flex-direction:column;gap:10px}.hash-row{display:grid;grid-template-columns:84px 1fr auto;align-items:center;gap:12px;padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.hash-row__label{font-size:12px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em}.hash-row__value{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;color:var(--text);overflow-wrap:break-word;word-break:break-all}.spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;display:inline-block;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}.btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-sm);font-size:12px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:background .15s,color .15s,border-color .15s;line-height:1}.btn--secondary{background:transparent;color:var(--text-muted);border-color:var(--border)}.btn--secondary:hover{color:var(--text);border-color:var(--text-muted)}.btn:disabled{opacity:.4;cursor:not-allowed}@media(max-width:480px){.hash-row{grid-template-columns:1fr;gap:6px}}