:root{--blue:#0084ff;--blue-dark:#06c;--blue-light:#e6f2ff;--ink:#1f2a37;--muted:#6b7280;--border:#e5e7eb;--bg:#f5f7fa;--card:#fff;--red:#e53935;--green:#2e7d32}*{box-sizing:border-box}html,body{margin:0;padding:0}body{color:var(--ink);background:var(--bg);font-family:Segoe UI,Helvetica Neue,Arial,sans-serif}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}.app{flex-direction:column;min-height:100vh;display:flex}.site-header{background:linear-gradient(180deg,var(--blue) 0%,var(--blue-dark) 100%);color:#fff;box-shadow:0 2px 6px #00000026}.header-inner{justify-content:space-between;align-items:center;max-width:1200px;height:64px;margin:0 auto;padding:0 20px;display:flex}.logo{color:#fff;align-items:center;gap:8px;font-size:26px;font-weight:700;display:flex}.logo-mark{width:34px;height:34px;color:var(--blue);background:#fff;border-radius:8px;place-items:center;font-weight:900;display:grid}.nav{align-items:center;gap:6px;display:flex}.nav a,.nav button{color:#fff;background:0 0;border:none;border-radius:6px;padding:8px 12px;font-size:15px;font-weight:500}.nav a:hover,.nav button:hover{background:#ffffff26;text-decoration:none}.nav .accent{color:var(--blue-dark);background:#fff;font-weight:700}.nav .accent:hover{background:#f0f0f0}.hero{background:linear-gradient(180deg,var(--blue-light) 0%,#fff 100%);text-align:center;padding:60px 20px 40px}.hero h1{color:var(--blue-dark);margin:0 0 12px;font-size:40px}.hero p{color:var(--muted);max-width:640px;margin:0 auto 30px;font-size:18px}.upload-box{border:2px dashed var(--blue);cursor:pointer;background:#fff;border-radius:14px;max-width:640px;margin:0 auto;padding:40px 20px;transition:background .2s,border-color .2s}.upload-box.drag{background:var(--blue-light);border-color:var(--blue-dark)}.upload-box .icon{color:var(--blue);font-size:46px}.upload-box h3{margin:10px 0 6px}.upload-box .hint{color:var(--muted);font-size:14px}.btn{border:none;border-radius:8px;align-items:center;gap:6px;padding:10px 20px;font-size:15px;font-weight:600;transition:transform 50ms,box-shadow .2s;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 2px 8px #0084ff59}.btn-primary:hover{background:var(--blue-dark)}.btn-outline{color:var(--blue);border:1px solid var(--blue);background:#fff}.btn-outline:hover{background:var(--blue-light)}.btn-danger{background:var(--red);color:#fff}.btn-sm{padding:6px 12px;font-size:13px}.features{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;max-width:1200px;margin:40px auto;padding:0 20px;display:grid}.feature{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}.feature .ic{background:var(--blue-light);width:44px;height:44px;color:var(--blue);border-radius:10px;place-items:center;margin-bottom:12px;display:grid}.feature h3{margin:0 0 6px}.feature p{color:var(--muted);margin:0;font-size:14px;line-height:1.5}.site-footer{color:#cbd5e1;background:#1f2a37;margin-top:auto;padding:40px 20px 20px}.footer-inner{grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;max-width:1200px;margin:0 auto;display:grid}.footer-inner h4{color:#fff;margin:0 0 10px}.footer-inner a{color:#cbd5e1;margin-bottom:6px;font-size:14px;display:block}.footer-inner a:hover{color:#fff;text-decoration:none}.footer-bottom{color:#94a3b8;border-top:1px solid #334155;flex-wrap:wrap;justify-content:space-between;gap:8px;max-width:1200px;margin:24px auto 0;padding-top:16px;font-size:13px;display:flex}.auth-wrap{place-items:center;min-height:calc(100vh - 64px);padding:40px 20px;display:grid}.auth-card{border:1px solid var(--border);background:#fff;border-radius:12px;width:100%;max-width:420px;padding:32px;box-shadow:0 4px 20px #0000000f}.auth-card h2{color:var(--blue-dark);margin:0 0 6px}.auth-card .sub{color:var(--muted);margin:0 0 20px;font-size:14px}.field{margin-bottom:14px}.field label{color:var(--ink);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.field input{border:1px solid var(--border);border-radius:8px;width:100%;padding:10px 12px;font-size:15px}.field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-light);outline:none}.auth-card .full{justify-content:center;width:100%;margin-top:6px}.auth-alt{text-align:center;color:var(--muted);margin-top:16px;font-size:14px}.divider{color:var(--muted);align-items:center;gap:10px;margin:16px 0;font-size:12px;display:flex}.divider:before,.divider:after{content:"";background:var(--border);flex:1;height:1px}.dash{min-height:calc(100vh - 64px);display:flex}.sidebar{border-right:1px solid var(--border);background:#fff;width:240px;padding:20px 12px}.sidebar .item{color:var(--ink);cursor:pointer;border-radius:8px;align-items:center;gap:10px;padding:10px 12px;font-size:14px;font-weight:500;display:flex}.sidebar .item:hover{background:var(--blue-light);color:var(--blue-dark);text-decoration:none}.sidebar .item.active{background:var(--blue);color:#fff}.sidebar .storage{background:var(--bg);border-radius:8px;margin-top:24px;padding:12px;font-size:13px}.storage-bar{background:#e5e7eb;border-radius:99px;height:6px;margin-top:6px;overflow:hidden}.storage-bar>div{background:var(--blue);height:100%}.main{flex:1;padding:24px;overflow:auto}.main-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;display:flex}.main-header h2{margin:0;font-size:22px}.toolbar{flex-wrap:wrap;gap:8px;display:flex}.search{border:1px solid var(--border);border-radius:8px;width:260px;padding:8px 12px;font-size:14px}.search:focus{border-color:var(--blue);outline:none}.filetable{border:1px solid var(--border);background:#fff;border-radius:10px;width:100%;overflow:hidden}.filetable table{border-collapse:collapse;width:100%}.filetable th{text-align:left;text-transform:uppercase;color:var(--muted);background:var(--bg);border-bottom:1px solid var(--border);padding:12px 16px;font-size:12px}.filetable td{border-bottom:1px solid var(--border);padding:12px 16px;font-size:14px}.filetable tr:last-child td{border-bottom:none}.filetable tr:hover td{background:#fafbfd}.fname{align-items:center;gap:10px;font-weight:500;display:flex}.ficon{background:var(--blue-light);width:30px;height:30px;color:var(--blue);border-radius:6px;flex-shrink:0;place-items:center;display:grid}.row-actions{justify-content:flex-end;gap:4px;display:flex}.row-actions button{color:var(--muted);background:0 0;border:none;border-radius:6px;place-items:center;padding:6px;display:grid}.row-actions button:hover{background:var(--bg);color:var(--blue)}.empty{text-align:center;color:var(--muted);padding:60px 20px}.empty .big{color:var(--border);margin-bottom:10px;font-size:48px}.modal-backdrop{z-index:50;background:#0006;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:12px;width:100%;max-width:520px;padding:24px}.modal h3{color:var(--blue-dark);margin:0 0 12px}.modal .actions{justify-content:flex-end;gap:8px;margin-top:16px;display:flex}.link-box{gap:8px;display:flex}.link-box input{border:1px solid var(--border);background:var(--bg);border-radius:6px;flex:1;padding:8px 10px;font-size:13px}.download-card{border:1px solid var(--border);text-align:center;background:#fff;border-radius:12px;max-width:520px;margin:60px auto;padding:32px}.download-card .ficon{border-radius:14px;width:72px;height:72px;margin:0 auto 16px;font-size:32px}.dl-meta{color:var(--muted);margin:6px 0 20px;font-size:14px}@media (width<=768px){.footer-inner{grid-template-columns:1fr 1fr}.sidebar{display:none}.search{width:100%}}