:root{--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--bg: #f8fafc;--card: #ffffff;--text: #1e293b;--muted: #64748b;--border: #e2e8f0}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg);color:var(--text);line-height:1.5}.container{max-width:800px;margin:0 auto;padding:2rem 1rem}.card{background:var(--card);border-radius:12px;box-shadow:0 1px 3px #0000001a;padding:2rem}.title{margin:0 0 .5rem;font-size:1.75rem}.subtitle{margin:0 0 2rem;color:var(--muted)}.form{display:flex;flex-direction:column;gap:1rem}.input{padding:.75rem 1rem;border:1px solid var(--border);border-radius:8px;font-size:1rem;outline:none}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.button{padding:.75rem 1.5rem;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:background .15s}.button:hover:not(:disabled){background:var(--primary-hover)}.button:disabled{opacity:.6;cursor:not-allowed}.error{color:var(--danger);font-size:.875rem}.file-list{display:flex;flex-direction:column;gap:.75rem}.file-item{display:flex;align-items:center;justify-content:space-between;padding:1rem;border:1px solid var(--border);border-radius:8px;background:var(--bg)}.file-info h3{margin:0 0 .25rem;font-size:1rem}.file-meta{font-size:.875rem;color:var(--muted)}.empty{text-align:center;color:var(--muted);padding:3rem 0}.upload-zone{border:2px dashed var(--border);border-radius:12px;padding:2rem;text-align:center;margin-bottom:1.5rem;cursor:pointer;transition:border-color .15s,background .15s}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--primary);background:#2563eb0d}.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.key-badge{display:inline-block;padding:.25rem .75rem;background:var(--primary);color:#fff;border-radius:999px;font-size:.875rem;font-weight:600}