/* Application shell: sticky header, create / user menus, grouped sidebar, drawer on phones, toasts.
   Page canvas is a soft lavender; every content block is a white card so tiles never blend into it. */
:root{--sb:268px;--hd:72px;--canvas:#f4f1fb;--card:#fff;--shadow:0 1px 2px #1d0f4f0d,0 8px 24px -12px #3a1d9a26}
body.workspace{background:var(--canvas);min-height:100vh}

/* ---------- header ---------- */
.workspace .header{position:sticky;top:0;z-index:40;height:var(--hd);min-height:var(--hd);padding:0 28px;display:flex;align-items:center;gap:18px;
  background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--uu-line)}
.workspace .brand{width:auto;flex:0 0 calc(var(--sb) - 52px);font-size:27px;line-height:1}
.workspace .brand small{display:block;font-size:9px;letter-spacing:1.6px;margin-top:5px;color:var(--uu-muted);font-weight:600}
.header-search{position:relative;flex:1 1 auto;max-width:560px;margin:0}
.header-search .icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--uu-muted);pointer-events:none}
.header-search input{width:100%;height:46px;padding:0 16px 0 46px;border-radius:14px;background:var(--canvas);border:1px solid transparent;font-size:15px;transition:background .15s,border-color .15s,box-shadow .15s}
.header-search input:focus{background:var(--surface);border-color:var(--uu-lavender);box-shadow:0 0 0 4px #9b76ef33;outline:none}
.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{position:relative;display:inline-grid;place-items:center;width:46px;height:46px;padding:0;border-radius:14px;border:1px solid transparent;background:transparent;color:var(--uu-ink);cursor:pointer}
.icon-btn:hover{background:var(--canvas)}
.icon-btn .icon{width:22px;height:22px}
.bell b{position:absolute;top:5px;right:4px;min-width:19px;height:19px;padding:0 5px;border-radius:10px;background:var(--uu-orange);color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center;border:2px solid #fff;box-sizing:content-box;top:3px;right:2px}
.menu-toggle{display:none}

/* dropdown menus built on <details> */
.menu{position:relative}
.menu>summary{list-style:none;cursor:pointer}
.menu>summary::-webkit-details-marker{display:none}
.menu-panel{position:absolute;top:calc(100% + 10px);left:0;z-index:60;min-width:250px;padding:8px;background:var(--surface);border:1px solid var(--uu-line);border-radius:18px;box-shadow:0 20px 50px -12px #2a1a6a40,0 2px 6px #1d0f4f12}
.menu-panel.right{left:auto;right:0}
.menu-panel a,.menu-panel button{display:flex;align-items:center;gap:12px;width:100%;min-height:44px;padding:10px 14px;border:0;border-radius:12px;background:transparent;font-size:15px;font-weight:500;color:var(--uu-ink);text-align:left;cursor:pointer;justify-content:flex-start}
.menu-panel a:hover,.menu-panel button:hover{background:var(--canvas)}
.menu-panel .icon{width:20px;height:20px;color:var(--accent)}
.menu-panel hr{border:0;border-top:1px solid var(--uu-line);margin:6px 4px}
.menu-panel form{margin:0}
.menu-head{padding:10px 14px 12px;border-bottom:1px solid var(--uu-line);margin-bottom:6px}
.menu-head strong{display:block;font-size:16px}.menu-head small{color:var(--uu-muted);font-size:13px}
.btn-create{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 20px 0 16px;border-radius:14px;background:var(--uu-primary);color:#fff;font-weight:600;font-size:15px;transition:background .15s,transform .1s}
.btn-create:hover{background:var(--uu-violet)}.btn-create:active{transform:scale(.98)}
.btn-create .icon{width:20px;height:20px}
.create-menu[open] .btn-create{background:var(--uu-violet)}
.user-chip{display:flex;align-items:center;gap:10px;height:46px;padding:0 10px 0 5px;border-radius:999px;border:1px solid var(--uu-line);background:var(--surface);font-weight:600;font-size:14px;max-width:260px}
.user-chip:hover{border-color:var(--uu-lavender)}
.user-chip .avatar{width:36px;height:36px;border-radius:50%;font-size:15px;background:var(--uu-primary);color:#fff}
.user-chip .icon{width:16px;height:16px;color:var(--uu-muted)}
.user-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- sidebar ---------- */
.workspace .sidebar{position:fixed;top:var(--hd);left:0;bottom:0;width:var(--sb);min-height:0;overflow-y:auto;padding:20px 16px 24px;background:var(--surface);border-right:1px solid var(--uu-line);display:flex;flex-direction:column;z-index:30}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav .nav-label{margin:18px 14px 8px;font-size:11px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--uu-muted)}
.side-nav .nav-label:first-child{margin-top:4px}
.workspace .side-nav a{display:flex;align-items:center;gap:12px;min-height:42px;padding:9px 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--ink)}
.workspace .side-nav a .icon{width:20px;height:20px;color:var(--uu-muted)}
.workspace .side-nav a:hover{background:var(--canvas);color:var(--uu-ink)}
.workspace .side-nav a:hover .icon{color:var(--accent)}
.workspace .side-nav a[aria-current=page]{background:var(--uu-primary);color:#fff;font-weight:600}
.workspace .side-nav a[aria-current=page] .icon{color:#fff;stroke:#fff}
.storage-card{margin-top:auto;padding:16px;border-radius:16px;background:var(--canvas)}
.storage-card .storage-label{display:flex;align-items:center;gap:8px;font-size:14px}
.storage-card .storage-label .icon{width:18px;height:18px;color:var(--accent)}
.storage-card meter{margin:12px 0 8px;height:8px;border-radius:6px;background:var(--tint)}
.storage-card meter::-webkit-meter-bar{background:var(--tint);border-radius:6px;height:8px}
.storage-card meter::-webkit-meter-optimum-value{background:linear-gradient(90deg,var(--uu-violet),var(--uu-primary));border-radius:6px}
.storage-card p{margin:0;font-size:14px;font-weight:600}.storage-card small{font-size:12px;color:var(--uu-muted)}
.nav-scrim{display:none}

/* ---------- main canvas ---------- */
.workspace main{margin-left:var(--sb);padding:36px 44px 64px;max-width:none;background:transparent;min-height:calc(100dvh - var(--hd) - 60px)}
.workspace footer{margin-left:var(--sb);background:transparent;padding:18px 44px;color:var(--uu-muted)}
.workspace main>*{max-width:1400px}
.panel,.folder-card,.video-card,.recent-card,.stat,.empty-state,.table-scroll,.file-tile,.workspace .panel{background:var(--card);box-shadow:var(--shadow);border:1px solid var(--line)}
.empty-state{border-style:solid}
.table-scroll{border-radius:20px}
.uu-gray{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.uu-gray::after{background:var(--surface-2)}
.file-tile{border:1px solid var(--line)}.file-tile:hover{background:var(--surface-2);border-color:var(--uu-lavender)}
.recent-card{background:var(--surface);border:1px solid var(--line)}.recent-card:hover{background:var(--surface-2);border-color:var(--uu-lavender)}
.dropzone{background:var(--surface-2)}
.file-table tbody tr{transition:background .12s}.file-table tbody tr:hover{background:var(--surface-2)}
/* table header colours live in design-system.css */

/* ---------- toasts ---------- */
/* Card with a tinted icon square, a title, an optional line of text and up to two actions (cloud/_toasts.html).
   The icon square carries the status: brand violet for done / info, amber for warnings, red for errors. */
.toasts{position:fixed;top:calc(var(--hd) + 14px);right:24px;z-index:80;display:flex;flex-direction:column;gap:10px;width:min(400px,calc(100vw - 32px))}
.toast{--t-bg:var(--tint);--t-fg:var(--accent);position:relative;display:flex;align-items:flex-start;gap:12px;margin:0;padding:14px 12px 14px 14px;
  border-radius:16px;background:var(--card,var(--surface));border:1px solid var(--line,var(--uu-line));box-shadow:0 18px 40px -16px #2a1a6a55,0 2px 6px -2px #2a1a6a1a;
  font-size:14px;line-height:1.45;color:var(--ink);animation:toast-in .25s ease-out}
.toast.warning{--t-bg:var(--warn-bg);--t-fg:var(--warn)}
.toast.error{--t-bg:var(--bad-bg);--t-fg:var(--bad);border-color:color-mix(in srgb,var(--bad) 30%,var(--line,var(--uu-line)))}
.toast-icon{display:grid;place-items:center;flex:none;width:34px;height:34px;border-radius:10px;background:var(--t-bg);color:var(--t-fg)}
.toast-icon .icon{width:19px;height:19px}
.toast-body{flex:1;min-width:0;padding-top:1px}
.toast-title{margin:0;font-weight:600;color:var(--ink);overflow-wrap:anywhere}
.toast-text{margin:2px 0 0;font-size:13px;color:var(--muted);overflow-wrap:anywhere}
.toast-actions{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0}
.toast-actions form{margin:0}
.toast-btn{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border:1px solid var(--line,var(--uu-line));border-radius:9px;background:transparent;color:var(--ink);font-size:13px;font-weight:600;text-decoration:none;cursor:pointer}
.toast-btn:hover{border-color:var(--uu-lavender,#9b76ef);filter:none}
.toast-btn.is-main{background:var(--uu-primary,#4b17cc);border-color:var(--uu-primary,#4b17cc);color:#fff}
.toast.error .toast-btn.is-main{background:var(--bad);border-color:var(--bad)}
.toast-close{display:grid;place-items:center;flex:none;width:28px;height:28px;min-height:0;margin:-2px -2px 0 0;padding:0;border:0;border-radius:8px;background:transparent;color:var(--muted);cursor:pointer}
.toast-close:hover{background:var(--tint);color:var(--ink)}
.toast-close .icon{width:16px;height:16px}
.toast[hidden]{display:none}
.toast.leaving{opacity:0;transform:translateX(16px);transition:opacity .25s,transform .25s}
.toast-more{display:flex;align-items:center;gap:8px;min-height:40px;padding:0 14px;border:1px solid var(--line,var(--uu-line));border-radius:14px;background:var(--card,var(--surface));
  box-shadow:0 10px 24px -16px #2a1a6a55;color:var(--muted);font-size:13px;cursor:pointer;text-align:left}
.toast-more span{flex:1}
.toast-more b{color:var(--accent);font-weight:600}
.toast-more .icon{width:16px;height:16px}
.toast-more[hidden]{display:none}
@keyframes toast-in{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
.notices{display:none}

/* ---------- row actions in file lists ---------- */
.row-actions{display:inline-flex;align-items:center;gap:6px;justify-content:flex-end}
.row-menu .menu-panel{min-width:230px}
.row-menu>summary{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;border:1px solid var(--uu-line);background:var(--surface)}
.row-menu>summary:hover{background:var(--canvas)}
.row-menu>summary .icon{width:18px;height:18px}
.file-table td:last-child{overflow:visible}
.table-scroll{overflow:visible}
.table-scroll .file-table{border-radius:20px;overflow:hidden}

/* ---------- tablets and phones ---------- */
@media (max-width:1100px){
  :root{--sb:236px}
  .workspace main{padding:28px 28px 56px}
  .user-name{display:none}.user-chip{padding-right:8px}
}
@media (max-width:900px){
  .menu-toggle{display:inline-grid}
  .workspace .header{padding:0 14px;gap:8px}
  .workspace .brand{flex:0 0 auto;font-size:23px}.workspace .brand small{display:none}
  .header-search{display:block;flex:1;max-width:none}
  .header-search input{height:42px}
  .btn-create span{display:none}.btn-create{padding:0 13px}
  .workspace .sidebar{transform:translateX(-102%);transition:transform .22s ease;box-shadow:0 0 0 100vmax transparent;width:min(300px,86vw);z-index:70}
  body.nav-open .sidebar{transform:none;box-shadow:12px 0 40px #1d0f4f33}
  body.nav-open .nav-scrim{display:block;position:fixed;inset:0;background:#1d0f4f66;z-index:60}
  .workspace main,.workspace footer{margin-left:0}
  .workspace main{padding:22px 16px 48px}
  .workspace footer{padding:16px}
  .toasts{left:12px;right:12px;top:calc(var(--hd) + 8px);max-width:none}
}
@media (max-width:520px){
  .header-search{display:none}
  .user-chip{padding:0 6px 0 4px}.user-chip .icon{display:none}
}
.workspace .sidebar~main,.workspace main{background:transparent}
.page-heading .secondary,.page-heading .primary,.heading-actions a,.heading-actions button{white-space:nowrap}
.page-heading{align-items:flex-start}
.create-menu .menu-panel{left:auto;right:0}
.bulk-check{border-radius:6px}
.folder-card .bulk-check{opacity:.35}.folder-card:hover .bulk-check,.folder-card .bulk-check:checked{opacity:1}
.file-table .bulk-check{opacity:.45}.file-table tr:hover .bulk-check,.file-table .bulk-check:checked{opacity:1}
.row-menu .menu-panel{position:absolute;right:0;left:auto}
.icon-button{width:38px;height:38px;border-radius:12px;border:1px solid var(--uu-line);background:var(--surface);color:var(--accent)}
.icon-button:hover{background:var(--canvas);border-color:var(--uu-lavender)}
.workspace .heading-actions{max-width:none;flex-wrap:wrap;justify-content:flex-end}
.file-detail-layout{align-items:start}
.preview-panel{padding:18px}
.space-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:24px}
.space-tile{min-height:200px;padding:28px 30px}
.space-tile h2{font-size:24px}

tr.dragging,.file-tile.dragging{opacity:.45}
[data-file]{cursor:grab}
.folder-card.drop-over{outline:3px dashed var(--uu-violet);outline-offset:3px;background:var(--surface-2)}

/* storage card: when room is short, a link to what the trash would give back */
.storage-card .storage-trash{display:block;margin-top:4px;font-size:12px;font-weight:600;color:var(--warn)}
.storage-card .storage-trash:hover{text-decoration:underline}

/* ---------- user menu: avatar head, flags, theme switch ---------- */
.user-panel{min-width:290px}
.user-head{display:flex;align-items:center;gap:12px}
.user-head>span:last-child{display:flex;flex-direction:column;min-width:0}
.user-head strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-head small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-head-avatar{flex:none;width:42px;height:42px;font-size:17px}
.user-role{align-self:flex-start;margin-top:4px;padding:2px 8px;border-radius:999px;background:var(--tint);color:var(--accent);font-size:11px;font-style:normal;font-weight:700;letter-spacing:.3px}
.menu-panel .menu-grow{flex:1;min-width:0}
.menu-flag{flex:none;padding:2px 8px;border-radius:999px;background:var(--warn-bg);color:var(--warn);font-size:11px;font-weight:700}
.menu-value{flex:none;font-size:13px;font-weight:500;color:var(--muted)}
.menu-panel kbd{flex:none;min-width:22px;padding:1px 6px;border:1px solid var(--line);border-radius:6px;font-size:12px;color:var(--muted);text-align:center}
.theme-switch{position:relative;flex:none;width:34px;height:20px;border-radius:10px;background:var(--line);transition:background var(--dur,.16s)}
.theme-switch::after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #0003;transition:transform var(--dur,.16s)}
:root[data-theme=dark] .theme-switch{background:var(--accent)}
:root[data-theme=dark] .theme-switch::after{transform:translateX(14px)}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-switch{background:var(--accent)}:root:not([data-theme=light]) .theme-switch::after{transform:translateX(14px)}}
.menu-panel .menu-logout{color:var(--bad)}
.menu-panel .menu-logout .icon{color:var(--bad)}

/* ---------- bell: dropdown with the latest notifications (cloud/base.html, collab/_bell_items.html) ---------- */
.bell-menu>summary{list-style:none;cursor:pointer}
.bell-menu>summary::-webkit-details-marker{display:none}
.bell b[hidden]{display:none}
.bell-panel{width:min(400px,calc(100vw - 24px));padding:0;overflow:hidden}
.bell-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px 10px;border-bottom:1px solid var(--line)}
.bell-head strong{font-size:16px}
.bell-head form{margin:0}
.menu-panel .bell-link{width:auto;min-height:0;padding:4px 8px;border-radius:8px;font-size:13px;font-weight:600;color:var(--accent)}
.bell-list{display:grid;grid-auto-rows:max-content;gap:8px;max-height:min(460px,60vh);overflow:auto;padding:10px}
.menu-panel .bell-item{position:relative;display:flex;align-items:flex-start;gap:12px;min-height:0;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);font-size:13px;font-weight:400;line-height:1.45;white-space:normal;text-decoration:none}
.menu-panel .bell-item.is-unread{padding-right:28px;border-color:color-mix(in srgb,var(--accent) 22%,var(--line));background:color-mix(in srgb,var(--tint) 55%,var(--surface))}
.menu-panel .bell-item.is-unread::after{content:"";position:absolute;top:16px;right:12px;width:8px;height:8px;border-radius:50%;background:var(--accent)}
.menu-panel .bell-item:hover{border-color:var(--accent);background:var(--tint)}
.bell-item-body{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}
.bell-item-text{color:var(--ink);overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.bell-item-text b{font-weight:600}
.bell-item small{font-size:12px;color:var(--muted)}
.bell-empty{display:flex;align-items:center;gap:8px;margin:0;padding:18px 12px;font-size:13px;color:var(--muted)}
.bell-empty .icon{width:18px;height:18px}
.menu-panel .bell-all{justify-content:center;min-height:44px;border-top:1px solid var(--line);border-radius:0;font-size:14px;font-weight:600;color:var(--accent)}

/* icon squares by notification category and tone (page and bell) */
.nt-icon{display:grid;place-items:center;flex:none;width:34px;height:34px;border-radius:10px;background:var(--tint);color:var(--accent)}
.nt-icon .icon,.menu-panel .nt-icon .icon{width:18px;height:18px;color:inherit}
.nt-icon.tone-access{background:color-mix(in srgb,var(--ok-bg) 70%,var(--tint));color:var(--ok)}
.nt-icon.tone-talk{background:var(--tint);color:var(--uu-primary,#4b17cc)}
.nt-icon.tone-system{background:var(--surface-2);color:var(--muted)}
.nt-icon.tone-remind{background:var(--warn-bg);color:var(--warn)}
.nt-icon.tone-bad{background:var(--bad-bg);color:var(--bad)}