/* Knowledge → «Материалы» tab: «Сводка и решения».
   Brief: .impeccable/surfaces/materials.md. Tokens only from palette.css / design.css.
   Scoped under #materials, its menus (.mat-menu, rendered in the top layer but owned here)
   and the dialog contents this module writes (.mat-doc, .mat-confirm-list, .mat-dialog-error). */

#materials{--mat-state:minmax(200px,280px);--mat-actions:max-content;position:relative}
/* A quiet seam before the rules form «Как общается ваша команда» that app.js renders below. */
#materials:has(.mat-section,.mat-empty){padding-bottom:30px;border-bottom:1px solid var(--line)}
#materials .num{font-variant-numeric:tabular-nums}
#materials p,#materials h2{margin:0}

/* ---------------------------------------------------------------- digest and toolbar */
#materials .mat-digest{font-size:15px;line-height:1.6;color:var(--ink);margin:0 0 16px}
#materials .mat-part{white-space:nowrap}
#materials .mat-digest strong{font-weight:600}
#materials .mat-dot{color:var(--plum-400)}
#materials .mat-link{display:inline-flex;align-items:center;gap:6px;border:0;background:none;padding:2px 0;min-height:24px;font:inherit;font-weight:500;color:var(--plum-700);text-decoration:underline;text-decoration-color:var(--plum-300);text-underline-offset:4px;text-decoration-thickness:1px;cursor:pointer;border-radius:3px}
#materials .mat-link:hover{text-decoration-color:currentColor}
#materials .mat-link.warn{color:var(--amber);text-decoration-color:var(--warning-300)}
#materials .mat-link.err{color:var(--red);text-decoration-color:var(--danger-300)}

#materials .mat-toolbar{display:flex;align-items:center;gap:16px;margin:0 0 30px}
#materials .mat-search{flex:1;max-width:460px;margin:0;min-height:42px;padding:0 12px}
#materials .mat-search input{min-height:40px;font-size:13px}
#materials .mat-search input::-webkit-search-cancel-button{cursor:pointer}
#materials .mat-formats{flex:1;font-size:12px;line-height:1.6;color:var(--muted);max-width:64ch}
#materials .mat-add{margin-left:auto;min-height:40px;padding:9px 15px}

/* ---------------------------------------------------------------- sections */
#materials .mat-section{margin-top:34px}
#materials .mat-toolbar+.mat-section{margin-top:0}
#materials .mat-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px 16px;flex-wrap:wrap;padding:0 8px 11px;border-bottom:1px solid var(--line)}
#materials .mat-section h2{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:600;letter-spacing:-.01em;line-height:1.35;color:var(--ink);border-radius:4px}
#materials .mat-section h2:focus{outline:none}
#materials .mat-section h2:focus-visible{outline:2px solid var(--focus);outline-offset:4px}
#materials .mat-count{min-width:22px;height:22px;padding:0 6px;border-radius:6px;display:inline-grid;place-items:center;background:var(--plum-150);color:var(--plum-700);font-size:11px;font-weight:500;letter-spacing:0}
#materials .mat-batch{font-size:12px;color:var(--muted);line-height:1.5}

#materials .mat-more-link,#materials .mat-all-toggle{display:inline-flex;align-items:center;gap:6px;min-height:40px;margin:10px 0 0;padding:6px 8px;border:0;border-radius:8px;background:none;font-size:12px;font-weight:500;color:var(--plum-700);cursor:pointer}
#materials .mat-more-link:hover,#materials .mat-all-toggle:hover{background:var(--plum-100)}
#materials .mat-all-toggle{margin-top:14px}
#materials .mat-all-toggle svg{transition:transform 200ms var(--ease)}
#materials .mat-all-toggle[aria-expanded="true"] svg{transform:rotate(-90deg)}
#materials .mat-more-link svg{transform:rotate(90deg)}

/* ---------------------------------------------------------------- rows */
/* The list owns the columns; rows are subgrids so status and actions line up down the list. */
#materials .mat-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:32px minmax(0,1fr) var(--mat-state) var(--mat-actions);column-gap:16px}
#materials .mat-list.selectable{grid-template-columns:32px 32px minmax(0,1fr) var(--mat-state) var(--mat-actions)}
#materials .mat-row{grid-column:1/-1;display:grid;grid-template-columns:subgrid;grid-template-areas:"tile main state actions";align-items:center;padding:12px 8px;border-bottom:1px solid var(--line);transition:background-color var(--fast)}
#materials .mat-row:hover{background:var(--plum-50)}
#materials .mat-row:focus{outline:none}
#materials .mat-row:focus-visible{outline:2px solid var(--focus);outline-offset:-2px;border-radius:10px}
#materials .mat-list.selectable .mat-row{grid-template-areas:"check tile main state actions"}
#materials .mat-check{grid-area:check;display:grid;place-items:center;width:40px;height:40px;margin:-4px;cursor:pointer;border-radius:8px}
#materials .mat-check:hover{background:var(--plum-150)}
#materials .mat-check input{width:17px;height:17px;margin:0;accent-color:var(--plum);cursor:pointer}
#materials .mat-tile{grid-area:tile;width:32px;height:38px;border-radius:8px;display:grid;place-items:center;background:var(--plum-150);color:var(--plum-500)}
#materials .tone-err .mat-tile{background:var(--red-pale);color:var(--red)}
#materials .tone-warn .mat-tile{background:var(--amber-pale);color:var(--amber)}
#materials .tone-muted .mat-tile{background:var(--plum-100);color:var(--plum-400)}
#materials .mat-main{grid-area:main;min-width:0}
#materials .mat-name{font-size:13px;font-weight:600;letter-spacing:-.01em;line-height:1.4;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#materials .tone-muted .mat-name{color:var(--plum-700);font-weight:500}
#materials .mat-meta{font-size:11px;line-height:1.5;color:var(--muted);margin-top:3px}
#materials .mat-sub{font-size:11px;line-height:1.5;color:var(--plum-700);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#materials .mat-state{grid-area:state;min-width:0}
#materials .mat-status{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;line-height:1.4;white-space:nowrap;max-width:100%}
#materials .mat-status>span{overflow:hidden;text-overflow:ellipsis}
#materials .mat-status svg{flex-shrink:0}
#materials .mat-status.ok{color:var(--green)}
#materials .mat-status.warn{color:var(--amber)}
#materials .mat-status.err{color:var(--red)}
#materials .mat-status.work{color:var(--plum-700)}
#materials .mat-status.muted{color:var(--muted)}
#materials .mat-status.mat-link{position:relative;min-height:32px;text-decoration-color:var(--warning-300)}
#materials .mat-rest{color:var(--muted);font-weight:400}
#materials .mat-reason{font-size:12px;line-height:1.5;color:var(--muted);margin-top:3px;overflow-wrap:anywhere;text-wrap:pretty}
#materials .tone-err .mat-reason{color:var(--danger-700)}
#materials .mat-bar{height:3px;border-radius:2px;background:var(--plum-150);overflow:hidden;margin-top:7px;max-width:220px}
#materials .mat-bar i{display:block;height:100%;border-radius:2px;background:var(--plum-500);transform-origin:0 50%;transition:transform 420ms var(--ease)}
#materials .mat-spin{animation:mat-spin 1.1s linear infinite;transform-origin:50% 50%}
@keyframes mat-spin{to{transform:rotate(360deg)}}
#materials .mat-actions{grid-area:actions;display:flex;align-items:center;justify-content:flex-end;gap:4px}
#materials .mat-actions .btn.small{min-height:34px}
#materials .mat-actions .icon-btn{width:36px;height:36px;min-width:36px}
#materials .mat-danger:hover{color:var(--red);background:var(--red-pale)}
#materials .mat-more{color:var(--plum-600)}
#materials .mat-more svg{stroke-width:2.8}
#materials .mat-more:hover,#materials .mat-more[aria-expanded="true"]{color:var(--plum);background:var(--plum-150)}

/* ---------------------------------------------------------------- full list: sort, selection, bulk */
#materials .mat-bulk{position:sticky;top:-1px;z-index:2;display:flex;align-items:center;gap:10px 14px;flex-wrap:wrap;min-height:56px;padding:8px 8px;background:var(--white);border-bottom:1px solid var(--line)}
#materials .mat-bulk.has-selection{background:var(--plum-50)}
#materials .mat-check-all{margin:0 -4px 0 -4px}
#materials .mat-picked{font-size:12px;font-weight:600;color:var(--ink);margin-right:4px}
#materials .mat-bulk-delete{color:var(--red)}
#materials .mat-bulk-delete:hover:not(:disabled){background:var(--red-pale);border-color:var(--danger-300)}
#materials .mat-sort{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
#materials .mat-sort select{min-height:34px;padding:6px 28px 6px 10px;border:1px solid var(--plum-200);border-radius:8px;background:var(--white);color:var(--ink);font-size:12px;font-weight:500;cursor:pointer}
#materials .mat-sort select:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
#materials .mat-toggle{display:inline-flex;align-items:center;gap:8px;min-height:40px;font-size:12px;color:var(--ink);cursor:pointer}
#materials .mat-toggle input{width:16px;height:16px;margin:0;accent-color:var(--plum)}

#materials .mat-noresult{padding:28px 8px 8px;max-width:62ch}
#materials .mat-noresult h2{font-size:16px;font-weight:600;letter-spacing:-.01em;overflow-wrap:anywhere}
#materials .mat-noresult p{font-size:13px;line-height:1.75;color:var(--muted);margin:10px 0 18px}

/* ---------------------------------------------------------------- empty: the drop zone is the content */
#materials .mat-empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding:56px 24px 52px;border:1.5px dashed var(--plum-300);border-radius:16px;background:var(--plum-50)}
#materials .mat-empty-mark{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:var(--plum-150);color:var(--plum-600);margin-bottom:20px}
#materials .mat-empty h2{font-size:20px;font-weight:600;letter-spacing:-.025em;line-height:1.3;color:var(--ink)}
#materials .mat-empty p{font-size:14px;line-height:1.75;color:var(--muted);max-width:54ch;margin:10px 0 22px;text-wrap:pretty}
#materials .mat-empty .btn{min-height:42px;padding:10px 17px}
#materials .mat-empty .mat-formats{flex:none;font-size:12px;margin:16px 0 0}

/* ---------------------------------------------------------------- drop overlay over the whole sheet */
#materials .mat-drop{position:fixed;z-index:60;display:grid;place-items:center;padding:24px;border:2px dashed var(--plum-300);border-radius:16px;background:oklch(from var(--plum-50) l c h / .94);pointer-events:none;animation:mat-drop-in 160ms var(--ease)}
#materials .mat-drop[hidden]{display:none}
#materials .mat-drop>div{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--plum-700)}
#materials .mat-drop p{font-size:17px;font-weight:500;letter-spacing:-.015em;color:var(--ink)}
@keyframes mat-drop-in{from{opacity:0}}

/* ---------------------------------------------------------------- row menu (temporary layer) */
#materials .mat-menu{position:fixed;inset:auto;margin:0;min-width:220px;max-width:min(300px,calc(100vw - 24px));padding:6px;border:1px solid var(--line);border-radius:12px;background:var(--white);color:var(--ink);box-shadow:0 14px 40px oklch(from var(--plum-950) l c h / .16),0 2px 6px oklch(from var(--plum-950) l c h / .06)}
#materials .mat-menu:popover-open{animation:mat-menu-in 160ms var(--ease)}
#materials .mat-menu button{display:flex;align-items:center;gap:10px;width:100%;min-height:42px;padding:9px 12px;border:0;border-radius:8px;background:none;font-size:13px;line-height:1.35;text-align:left;color:var(--ink);cursor:pointer}
#materials .mat-menu button svg{color:var(--plum-500);flex-shrink:0}
#materials .mat-menu button:hover{background:var(--plum-100)}
#materials .mat-menu button:focus-visible{outline:2px solid var(--focus);outline-offset:-2px}
#materials .mat-menu .mat-danger,#materials .mat-menu .mat-danger svg{color:var(--red)}
#materials .mat-menu .mat-danger:hover{background:var(--red-pale)}
@keyframes mat-menu-in{from{opacity:0;transform:translateY(-4px)}}

/* ---------------------------------------------------------------- dialog contents written by this module */
.mat-doc .mat-doc-meta{font-size:12px;color:var(--muted);margin:0 0 16px;font-variant-numeric:tabular-nums}
.mat-doc .mat-doc-state{font-size:13px;color:var(--plum-700);margin:0 0 8px}
.mat-steps{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:9px}
.mat-steps li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px;align-items:start;font-size:13px;line-height:1.5;color:var(--ink)}
.mat-steps li svg{margin-top:2px}
.mat-steps li.done svg{color:var(--green)}
.mat-steps li.doing{color:var(--plum-700);font-weight:500}
.mat-steps li.doing svg{color:var(--plum-500)}
.mat-steps li.fail{color:var(--red);font-weight:500}
.mat-steps li.warn{color:var(--amber);font-weight:500}
.mat-steps li.todo{color:var(--muted)}
.mat-steps li>i{width:7px;height:7px;margin:6px 0 0 5px;border-radius:50%;border:1.5px solid var(--plum-300)}
.mat-steps small{display:block;font-size:12px;font-weight:400;line-height:1.6;color:var(--danger-700);margin-top:2px}
.mat-doc .mat-doc-actions{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}
.mat-doc .mat-doc-h{font-size:13px;font-weight:600;color:var(--ink);margin:0 0 10px;padding-top:18px;border-top:1px solid var(--line)}
.mat-doc .mat-doc-text{max-height:46dvh;overflow:auto;padding:16px 18px;border-radius:12px;background:var(--plum-50);font-size:13px;line-height:1.8}
.dialog-body .mat-doc .mat-doc-note{font-size:11px;margin:10px 0 0}
.mat-confirm-list{margin:0 0 6px;padding-left:18px;font-size:13px;line-height:1.7;color:var(--ink);overflow-wrap:anywhere}
.mat-confirm-list .mat-confirm-more{list-style:none;margin-left:-18px;color:var(--muted)}
.dialog-body .mat-dialog-error{color:var(--red);margin:10px 0 0}
.dialog-body .mat-dialog-error:empty{display:none}

@media(min-width:651px){#materials .mat-phone-only,#materials .mat-menu .mat-phone-only{display:none}}

/* ---------------------------------------------------------------- tablet */
@media(max-width:1024px){
 #materials{--mat-state:minmax(160px,220px)}
 #materials .mat-list{column-gap:12px}
 /* Touch: the visual size stays, the hit area reaches 44px. */
 #materials .mat-status.mat-link::before,#materials .mat-actions .btn.small::before{content:"";position:absolute;inset:-6px 0}
 #materials .mat-actions .btn.small{position:relative}
 #materials .mat-actions .icon-btn{width:44px;height:44px;min-width:44px}
}

/* ---------------------------------------------------------------- phone: two-line rows, actions behind the row menu */
@media(max-width:650px){
 #materials .mat-digest{font-size:14px;margin-bottom:14px}
 #materials .mat-toolbar{flex-wrap:wrap;gap:12px;margin-bottom:24px}
 #materials .mat-search{flex:1 1 100%;max-width:none;min-height:46px}
 #materials .mat-search input{font-size:16px}
 #materials .mat-formats{flex:1 1 100%;order:2}
 #materials .mat-add{margin-left:0;flex:1 1 100%;min-height:44px}
 #materials .mat-section{margin-top:28px}
 #materials .mat-section-head{padding:0 2px 10px}
 #materials .mat-list,#materials .mat-list.selectable{display:block}
 #materials .mat-row,#materials .mat-list.selectable .mat-row{grid-template-columns:32px minmax(0,1fr) auto;grid-template-areas:"tile main actions" ". state state";row-gap:6px;column-gap:12px;padding:13px 2px}
 #materials .mat-list.selectable .mat-row{grid-template-areas:"check main actions" ". state state"}
 #materials .mat-list.selectable .mat-tile{display:none}
 #materials .mat-name{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow-wrap:anywhere}
 #materials .mat-sub{white-space:normal}
 #materials .mat-state{display:flex;flex-direction:column;align-items:flex-start}
 #materials .mat-bar{width:100%;max-width:none}
 #materials .mat-inline{display:none}
 #materials .mat-actions{align-self:start;gap:2px}
 #materials .mat-actions .icon-btn{width:44px;height:44px;min-width:44px}
 #materials .mat-actions .mat-keep{min-height:44px}
 #materials .mat-row:has(.mat-keep) {grid-template-areas:"tile main main" ". state state" ". actions actions"}
 #materials .mat-row:has(.mat-keep) .mat-actions{justify-content:flex-start;margin-top:4px}
 #materials .mat-bulk{top:-1px;padding:8px 2px;gap:8px 10px}
 #materials .mat-sort select{font-size:16px;min-height:40px}
 #materials .mat-empty{padding:40px 18px 36px}
 #materials .mat-empty h2{font-size:19px}
 #materials .mat-empty .btn{width:100%}
 .mat-doc .mat-doc-actions .btn{flex:1 1 100%}
}

@media(prefers-reduced-motion:reduce){
 #materials .mat-spin,#materials .mat-drop,#materials .mat-menu:popover-open{animation:none}
 #materials .mat-bar i,#materials .mat-row,#materials .mat-all-toggle svg{transition:none}
}

/* ---------------------------------------------------------------- audience: who a document may be quoted to */
/* Upload choice: a quiet segmented pair (native radios) beside «Добавить файлы», one hint line below. */
#materials .mat-aud-pick{display:inline-flex;align-items:stretch;gap:2px;margin:0;padding:3px;border:0;border-radius:10px;background:var(--plum-100);min-width:0}
#materials .mat-aud-opt{position:relative;display:flex;cursor:pointer}
#materials .mat-aud-opt input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
#materials .mat-aud-opt span{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:34px;padding:6px 11px;border-radius:7px;font-size:12px;font-weight:500;line-height:1.3;color:var(--muted);text-align:center;transition:background-color var(--fast),color var(--fast),box-shadow var(--fast)}
#materials .mat-aud-opt span svg{flex-shrink:0}
#materials .mat-aud-opt:hover span{color:var(--plum-800)}
#materials .mat-aud-opt input:checked+span{background:var(--white);color:var(--plum);box-shadow:0 1px 2px oklch(from var(--plum-950) l c h / .08),0 0 0 1px var(--plum-200)}
#materials .mat-aud-opt input:focus-visible+span{outline:2px solid var(--focus);outline-offset:2px}
#materials .mat-aud-hint{flex-basis:100%;margin:-8px 0 0;text-align:right;font-size:12px;line-height:1.5;color:var(--muted)}
#materials .mat-toolbar{flex-wrap:wrap}
#materials .mat-toolbar .mat-add{margin-left:0}
#materials .mat-toolbar .mat-aud-pick{margin-left:auto}
#materials .mat-empty .mat-aud-pick{margin:0 0 8px}
#materials .mat-empty .mat-aud-hint{flex-basis:auto;max-width:46ch;margin:0 0 20px;font-size:12px;line-height:1.5;text-align:center}

/* Row marker: part of the meta line, never a badge. */
#materials .mat-aud{display:inline-flex;align-items:center;gap:4px;white-space:nowrap;color:var(--plum-700);font-weight:500}
#materials .mat-aud svg{flex-shrink:0;margin-top:-1px}
#materials .mat-aud .mat-dot{white-space:pre}
#materials .mat-drop-note{font-size:13px;color:var(--plum-700)}
#materials .mat-drop-note[hidden]{display:none}

/* Document view: the audience switch. */
.mat-doc .mat-doc-aud{display:grid;gap:4px;margin:0 0 20px;padding:14px 0 0;border-top:1px solid var(--line)}
.mat-switch{display:inline-flex;align-items:center;gap:10px;min-height:40px;width:max-content;max-width:100%;cursor:pointer;font-size:13px;font-weight:600;color:var(--ink)}
.mat-switch input{position:absolute;opacity:0;width:1px;height:1px;margin:0}
.mat-switch-track{position:relative;flex-shrink:0;width:34px;height:20px;border-radius:10px;background:var(--plum-200);transition:background-color var(--fast)}
.mat-switch-track::after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--white);box-shadow:0 1px 2px oklch(from var(--plum-950) l c h / .25);transition:transform 200ms var(--ease)}
.mat-switch input:checked+.mat-switch-track{background:var(--plum-700)}
.mat-switch input:checked+.mat-switch-track::after{transform:translateX(14px)}
.mat-switch input:focus-visible+.mat-switch-track{outline:2px solid var(--focus);outline-offset:3px}
.mat-switch input:disabled+.mat-switch-track{opacity:.55}
.mat-switch:has(input:disabled){cursor:progress}
.mat-doc .mat-doc-aud-hint{font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 0 44px}
.mat-doc .mat-doc-aud-confirm{margin:8px 0 0 44px;padding:12px 14px;border-radius:12px;background:var(--amber-pale)}
.mat-doc .mat-doc-aud-confirm[hidden]{display:none}
.mat-doc .mat-doc-aud-confirm p{font-size:13px;line-height:1.6;color:var(--warning-800);margin:0 0 10px}
.mat-doc .mat-doc-aud-confirm .row{display:flex;flex-wrap:wrap;gap:8px}

@media(max-width:1024px){
 /* The search keeps a usable width; the choice and the button wrap to their own line, right-aligned. */
 #materials .mat-toolbar .mat-search,#materials .mat-toolbar .mat-formats{flex:1 1 300px}
 #materials .mat-aud-opt span{min-height:44px}
 .mat-switch{min-height:44px}
 /* Narrow rows: the marker takes its own line instead of wrapping mid-meta. */
 #materials .mat-meta .mat-aud{display:flex;width:max-content;margin-top:1px}
 #materials .mat-meta .mat-aud .mat-dot{display:none}
}
@media(max-width:650px){
 /* Phone: the two choices stack so the long label stays on one line. */
 #materials .mat-toolbar .mat-aud-pick{flex:1 1 100%;margin-left:0;order:3}
 #materials .mat-aud-pick{flex-direction:column}
 #materials .mat-aud-opt span{width:100%;justify-content:flex-start;padding:6px 14px}
 #materials .mat-toolbar .mat-aud-hint{order:4;margin:-4px 0 0;text-align:left}
 #materials .mat-toolbar .mat-add{order:5}
 #materials .mat-empty .mat-aud-pick{width:100%}
}
@media(prefers-reduced-motion:reduce){
 #materials .mat-aud-opt span,.mat-switch-track,.mat-switch-track::after{transition:none}
}