:root{color-scheme:dark;--bg:#171a20;--surface:#20242b;--raised:#292e37;--border:#363c47;--text:#e4e8ef;--muted:#969fae;--accent:#489fe5;--accent-bg:#223e56;--danger:#f39999;--shadow:0 16px 60px #0005;font-family:"Segoe UI",system-ui,sans-serif;font-size:14px}
:root.light{color-scheme:light;--bg:#edf0f4;--surface:#fff;--raised:#f3f5f8;--border:#d5dbe4;--text:#253142;--muted:#657387;--accent:#1776ba;--accent-bg:#e1f0fc;--danger:#b33434;--shadow:0 16px 60px #22334420}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}[hidden]{display:none!important}button,input,select{font:inherit}button{border:1px solid var(--border);background:var(--raised);color:var(--text);border-radius:5px;padding:8px 12px;cursor:pointer}button:hover:enabled{border-color:var(--accent);background:var(--accent-bg)}button:disabled{opacity:.38;cursor:default}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.danger{color:var(--danger)}input,select{width:100%;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:5px;padding:10px 12px}label{display:block}h1,h2,h3,p{margin:0}h1{font-size:24px;font-weight:600}h2{font-size:20px}h3{font-size:14px}.muted{color:var(--muted);line-height:1.6}.eyebrow{color:var(--muted);font-size:11px;font-weight:600;letter-spacing:1.5px}.error{color:var(--danger);line-height:1.6;min-height:1em}.brand-mark{display:grid;place-items:center;background:var(--accent);color:#fff;font-weight:700;font-size:27px;width:52px;height:52px;border-radius:10px}.brand-mark.small{width:36px;height:36px;border-radius:7px;font-size:21px}.login-view{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at top,var(--accent-bg),transparent 65%)}.login-card{width:min(420px,100%);background:var(--surface);padding:36px;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);display:grid;gap:20px}.login-card .eyebrow{margin-bottom:-12px}.login-card label{display:grid;gap:8px;font-size:13px}.app-view{min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--surface)}.brand{display:flex;align-items:center;gap:12px}.brand strong{display:block;font-size:17px}.brand div>span{display:block;color:var(--muted);font-size:12px;margin-top:3px}.header-actions{display:flex;align-items:center;gap:8px}.header-actions>.muted{margin-right:12px}.header-actions button{font-size:12px}.ribbon{display:flex;gap:0;padding:10px 12px;background:var(--surface);border-bottom:1px solid var(--border);overflow-x:auto}.ribbon-group{padding:0 12px;border-right:1px solid var(--border);display:flex;flex-direction:column;justify-content:space-between;gap:8px}.ribbon-group:last-child{border:0}.ribbon-buttons{display:flex;gap:4px}.ribbon-buttons button{border:1px solid transparent;background:transparent;min-width:65px;padding:5px 8px;font-size:11px;display:flex;flex-direction:column;align-items:center;gap:6px;white-space:nowrap}.ribbon-buttons button>span{font-size:25px;color:var(--accent);line-height:28px}.ribbon-buttons button.danger>span{color:var(--danger)}.group-label{text-align:center;font-size:11px;color:var(--muted)}.workspace{display:grid;grid-template-columns:235px minmax(320px,1fr) 235px;flex:1;min-height:calc(100vh - 203px)}.sidebar,.details-panel{background:var(--surface);padding:20px 14px;min-width:0}.sidebar{border-right:1px solid var(--border);display:flex;flex-direction:column}.details-panel{border-left:1px solid var(--border)}.section-title{font-size:11px;letter-spacing:1.2px;font-weight:700;color:var(--muted);margin-bottom:12px;display:flex;justify-content:space-between}.section-title>span{background:var(--raised);padding:1px 6px;border-radius:3px}.storage-list{display:grid;gap:5px}.storage-item{display:block;text-align:left;width:100%;border-color:transparent;background:transparent;padding:10px}.storage-item.active,.tree-item.active{background:var(--accent-bg);border-color:var(--accent);color:var(--text)}.storage-item strong{display:block;font-weight:600;overflow-wrap:anywhere}.storage-item small{display:block;margin-top:4px;color:var(--muted)}.folder-title{margin-top:26px}.folder-tree{overflow:auto;max-height:55vh}.tree-item{display:block;width:100%;text-align:left;border:1px solid transparent;background:transparent;margin-bottom:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-note{margin-top:auto;padding-top:28px;color:var(--muted);font-size:11px;line-height:1.6}.file-panel{display:flex;flex-direction:column;padding:24px;min-width:0;background:var(--bg)}.file-panel.dragging{box-shadow:inset 0 0 0 2px var(--accent);background:var(--accent-bg)}.file-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:24px}.file-heading h1{margin-top:6px}.search{width:min(270px,45%)}.search input{background:var(--surface);font-size:13px}.breadcrumb{display:flex;gap:3px;flex-wrap:wrap;margin-top:10px}.breadcrumb button{font-size:12px;color:var(--muted);padding:3px 5px;border-color:transparent;background:transparent}.empty{margin:auto;text-align:center;padding:50px 15px}.empty>span{font-size:55px;color:var(--accent)}.empty h2{margin:16px 0 10px}.empty p{line-height:1.8;color:var(--muted);margin-bottom:22px}.table-wrapper{overflow:auto;border:1px solid var(--border);border-radius:6px;background:var(--surface);flex:1}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;color:var(--muted);font-size:11px;font-weight:600;background:var(--raised);position:sticky;top:0}th,td{padding:12px 14px;border-bottom:1px solid var(--border)}td:first-child{max-width:420px;overflow-wrap:anywhere}td:not(:first-child){white-space:nowrap;color:var(--muted)}tbody tr{cursor:pointer}tbody tr:hover{background:var(--raised)}tbody tr.selected{background:var(--accent-bg)}.row-name{display:flex;align-items:center;gap:10px}.file-symbol{color:var(--accent);font-size:18px}.file-footer{display:flex;align-items:center;justify-content:space-between;padding-top:16px;font-size:12px;color:var(--muted);gap:12px}.file-footer>div{display:flex;align-items:center;gap:10px}.file-footer button{padding:4px 10px}.details-panel dl{margin:18px 0;display:grid;gap:5px}.details-panel dt{color:var(--muted);font-size:11px;margin-top:12px}.details-panel dd{margin:0;font-size:12px;overflow-wrap:anywhere;line-height:1.6}.detail-name{font-size:16px;line-height:1.5;overflow-wrap:anywhere}.statusbar{display:flex;justify-content:space-between;gap:16px;min-height:34px;align-items:center;background:var(--surface);border-top:1px solid var(--border);padding:8px 16px;color:var(--muted);font-size:11px}.statusbar>span:first-child{color:var(--text)}#progress-area{border-top:1px solid var(--border);padding-top:20px;margin-top:28px}#progress-area p{font-size:12px;margin-top:10px;overflow-wrap:anywhere}progress{width:100%;height:8px;accent-color:var(--accent);margin-top:16px}#cancel-upload{font-size:12px;margin-top:12px}dialog{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:10px;width:min(460px,calc(100% - 32px));padding:28px;box-shadow:var(--shadow)}dialog::backdrop{background:#0008}dialog h2{margin-bottom:12px}#dialog-fields{display:grid;gap:16px;margin:22px 0}#dialog-fields label{display:grid;gap:8px;font-size:13px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
@media(min-width:1450px){.workspace{grid-template-columns:260px minmax(400px,1fr) 270px}.file-panel{padding:30px}}@media(max-width:1100px){.workspace{grid-template-columns:210px minmax(300px,1fr)}.details-panel{display:none}.ribbon{padding-left:0;padding-right:0}}@media(max-width:650px){.app-header{align-items:flex-start;padding:12px;gap:10px}.brand strong{font-size:14px}.header-actions{flex-wrap:wrap;justify-content:flex-end;max-width:160px}.header-actions>.muted{display:none}.header-actions button{padding:5px;font-size:11px}.workspace{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--border);padding:14px}.storage-list{display:flex;overflow:auto}.storage-item{min-width:150px}.folder-title{margin-top:15px}.folder-tree{max-height:180px}.sidebar-note{display:none}.file-panel{padding:16px;min-height:450px}.file-heading{flex-wrap:wrap;gap:14px}.search{width:100%}.statusbar>span:last-child{display:none}.ribbon-group{padding:0 7px}.ribbon-buttons button{min-width:60px}th,td{padding:10px}th:nth-child(4),td:nth-child(4){display:none}.login-card{padding:28px}}
@media(max-width:1100px){.details-panel.uploading{display:block;position:fixed;right:16px;bottom:48px;width:290px;z-index:5;border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow)}.details-panel.uploading #details,.details-panel.uploading>.section-title{display:none}.details-panel.uploading #progress-area{margin:0;border:0;padding:0}}
.assignment-field{border:0;padding:0;margin:0;min-width:0}.assignment-field legend{font-size:13px;font-weight:600;margin-bottom:12px}.assignment-options{margin-top:12px;max-height:320px;overflow:auto;border:1px solid var(--border);border-radius:5px;padding:6px}#dialog-fields .assignment-option{display:flex;align-items:flex-start;gap:10px;padding:9px 8px;font-size:12px;line-height:1.5;border-radius:3px}#dialog-fields .assignment-option:hover{background:var(--raised)}.assignment-option input{width:16px;height:16px;flex:0 0 16px;margin:2px 0 0;accent-color:var(--accent)}.assignment-option:has(input:disabled){opacity:.45}.assignment-summary{font-size:12px;margin-top:10px}.assignment-badge{font-size:11px;padding:4px 7px;color:var(--accent);background:var(--accent-bg);border-color:transparent;white-space:nowrap}.tree-item{display:flex;align-items:center;gap:6px}.tree-item>span:first-child{overflow:hidden;text-overflow:ellipsis}.parent-badge{font-size:10px;color:var(--accent);margin-left:auto;background:var(--raised);padding:2px 4px;border-radius:3px;flex-shrink:0}.parent-links{display:grid;gap:6px;margin-top:8px}.parent-link{font-size:11px;text-align:left;overflow-wrap:anywhere;padding:6px 8px;color:var(--accent);background:var(--accent-bg);border-color:transparent}.details-label{font-size:11px;color:var(--muted);margin-top:18px}.detail-action,.folder-parents{font-size:11px;margin-top:12px}.folder-parents:disabled{display:none}.folder-parent-links{display:flex;gap:5px;align-items:center;flex-wrap:wrap;margin-top:8px;font-size:11px}.folder-parent-links:empty{display:none}.folder-parent-links .active{border-color:var(--accent)}#dialog-description{white-space:pre-line}@media(max-width:650px){th:nth-child(4),td:nth-child(4),th:nth-child(5),td:nth-child(5){display:none}th:nth-child(3),td:nth-child(3){display:table-cell}.assignment-badge{font-size:10px}}