:root{--color-primary:#099cf4;--color-primary-hover:#20a7f7;--color-primary-dark:#087dc3;--color-secondary:#e36159;--color-tertiary:#2baab1;--color-dark:#212529;--color-heading:#222529;--color-text:#777;--color-text-muted:#999;--color-bg:#fff;--color-gray:#f4f4f4;--color-gray-border:#00000014;--color-footer:#383f48;--color-topbar:#1d2127;--font-main:"Poppins", system-ui, sans-serif;--container-width:1140px;--shadow-sm:0 2px 8px #0000000f}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-main);color:var(--color-text);background:var(--color-bg);margin:0;font-size:14px;line-height:1.7}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover)}img{max-width:100%;height:auto}.container{width:min(100% - 2rem, var(--container-width));margin-inline:auto}.page-title{color:var(--color-heading);margin:0 0 .5rem;font-size:2rem;font-weight:400}.page-title:after{content:"";border-bottom:5px solid var(--color-primary);width:100%;max-width:120px;margin-top:1rem;display:block}.page-subtitle{color:var(--color-text);margin:0 0 2rem;font-size:1rem}.btn{text-transform:uppercase;cursor:pointer;border:none;border-radius:0;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-family:inherit;font-size:13px;font-weight:700;transition:background .2s,color .2s;display:inline-flex}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover);color:#fff}.btn-outline{color:var(--color-primary);border:1px solid var(--color-primary);background:0 0}.btn-outline:hover{background:var(--color-primary);color:#fff}.btn-danger{background:var(--color-secondary);color:#fff}.btn-danger:hover{color:#fff;background:#dc382e}.btn-sm{padding:.4rem .85rem;font-size:11px}.card{border:1px solid var(--color-gray-border);box-shadow:var(--shadow-sm);background:#fff}.alert{border-left:4px solid var(--color-primary);color:var(--color-dark);background:#f0f9ff;margin-bottom:1rem;padding:.85rem 1rem}.alert-error{border-left-color:var(--color-secondary);background:#fff5f4}.form-group{margin-bottom:1rem}.form-group label{color:var(--color-heading);margin-bottom:.35rem;font-size:13px;font-weight:600;display:block}.form-control{border:1px solid var(--color-gray-border);width:100%;padding:.65rem .85rem;font-family:inherit;font-size:14px}.form-control:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 2px #099cf426}.explorer-layout{grid-template-columns:260px 1fr;gap:1.5rem;min-height:420px;display:grid}@media (width<=768px){.explorer-layout{grid-template-columns:1fr}}.tree-panel{background:var(--color-gray);padding:1rem}.tree-panel h3{text-transform:uppercase;color:var(--color-heading);margin:0 0 1rem;font-size:14px}.tree-list,.tree-children{margin:0;padding:0;list-style:none}.tree-children{margin-top:.25rem;padding-left:1rem}.tree-item button{text-align:left;width:100%;color:var(--color-dark);cursor:pointer;background:0 0;border:none;border-radius:2px;padding:.45rem .5rem;font-family:inherit;font-size:13px}.tree-item button:hover,.tree-item button.active{color:var(--color-primary);background:#099cf41f}.files-panel{padding:0;overflow:hidden}.breadcrumb{background:var(--color-gray);border-bottom:1px solid var(--color-gray-border);flex-wrap:wrap;align-items:center;gap:.35rem;padding:1rem 1.25rem;font-size:13px;display:flex}.breadcrumb button{color:var(--color-primary);cursor:pointer;font-family:inherit;font-size:inherit;background:0 0;border:none;padding:0}.breadcrumb span.sep{color:var(--color-text-muted)}.file-table{border-collapse:collapse;width:100%}.file-table th,.file-table td{text-align:left;border-bottom:1px solid var(--color-gray-border);padding:.85rem 1.25rem}.file-table th{text-transform:uppercase;letter-spacing:.04em;color:var(--color-heading);background:#fafafa;font-size:12px}.file-table tr:hover td{background:#f9fcff}.file-icon{margin-right:.5rem}.empty-state{text-align:center;color:var(--color-text-muted);padding:3rem 1.25rem}.admin-toolbar{background:var(--color-gray);border:1px solid var(--color-gray-border);flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem;padding:1rem;display:flex}.admin-toolbar form{flex-wrap:wrap;align-items:end;gap:.75rem;display:flex}.admin-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem;margin-bottom:1.5rem;display:grid}.login-card{max-width:420px;margin:3rem auto;padding:2rem}.hidden{display:none!important}main{min-height:60vh;padding:2.5rem 0 4rem}