/* ============ КАРКАС / ПАНЕЛЬ / САЙДБАР / ПАПКИ ============ */
.app{position:absolute;inset:0;margin:auto;width:min(1240px,95vw);height:min(820px,92vh);
  display:flex;border-radius:var(--r);overflow:hidden;
  backdrop-filter:blur(var(--blur)) saturate(1.2);-webkit-backdrop-filter:blur(var(--blur)) saturate(1.2);
  border:1px solid var(--line);box-shadow:0 30px 90px rgba(0,0,0,.35)}
.sidebar{display:flex;width:398px;flex:none;transition:width .25s ease,transform .24s cubic-bezier(0.23,1,0.32,1);
  background:color-mix(in srgb,var(--side-base) var(--side-a),transparent);backdrop-filter:blur(10px)}
.side-main{flex:1;min-width:0;display:flex;flex-direction:column;position:relative}
.chat{flex:1;position:relative;display:flex;flex-direction:column;min-width:0;
  background:color-mix(in srgb,var(--chat-base) var(--chat-a),transparent)}
.app.feed-mode .chat> :not(.feed-screen){display:none!important}
.feed-screen{display:none;flex:1;min-width:0;min-height:0;flex-direction:column;background:color-mix(in srgb,var(--chat-base) var(--chat-a),transparent)}
.app.feed-mode .feed-screen{display:flex}
.feed-head{display:flex;align-items:center;gap:10px;min-height:66px;padding:10px 16px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--side-base) 54%,transparent);flex:none}
.feed-back{flex:none}
.feed-title{font-size:17px;line-height:1.2;font-weight:650;letter-spacing:-.2px}
.feed-content{display:flex;flex:1;min-height:0;min-width:0}
.feed-list{width:min(350px,42%);flex:none;overflow-y:auto;padding:14px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:9px}
.feed-list .lenta-post{cursor:pointer;padding:13px;border-radius:15px}
.feed-list .lenta-post:hover{background:var(--hover)}
.feed-list .lenta-post.selected{background:var(--active);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}
.feed-list .lenta-post h3{font-size:13.5px;line-height:1.35}
.feed-list .lenta-post .cap{font-size:12px;color:var(--dim);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.feed-list .lenta-post img,.feed-list .lenta-post video{max-height:150px;object-fit:cover}
.feed-list .lenta-post .feed-cover{width:100%;height:145px;border-radius:11px}
.feed-reader{flex:1;min-width:0;overflow-y:auto;padding:26px clamp(18px,4vw,52px)}
.feed-reader-empty{height:100%;min-height:180px;display:grid;place-items:center;color:var(--dim);font-size:13px;text-align:center}
.feed-reader-inner{max-width:760px;margin:0 auto}
.feed-reader-inner h2{font-size:22px;line-height:1.3;letter-spacing:-.3px}
.feed-reader-author{color:var(--dim);font-size:12px;margin-top:8px}
.feed-reader-caption{font-size:15px;line-height:1.6;white-space:pre-wrap;margin:24px 0}
.feed-reader-media{display:flex;flex-direction:column;gap:14px}.feed-reader-media img,.feed-reader-media video{max-width:100%;max-height:64vh;border-radius:16px}.feed-reader-media audio{width:100%}
.feed-reader-inner .feed-article-image{display:block;width:100%;max-height:62vh;object-fit:contain;border-radius:16px;margin:22px 0}
.feed-reader-link{display:inline-flex;margin-top:20px;color:var(--accent);font-size:13px}
@media(max-width:760px){.feed-head{min-height:58px;padding:8px 12px}.feed-title{font-size:17px}.feed-content{position:relative}.feed-list{width:100%;border-right:0;padding:12px}.feed-reader{display:none;position:absolute;inset:0;background:var(--chat-base);z-index:2;padding:20px 16px}.feed-content.reader-open .feed-list{display:none}.feed-content.reader-open .feed-reader{display:block}}
.app.rail .sidebar{width:86px}
.app.rail .folders-rail{display:none}
.app.rail .side-head{justify-content:center;padding:18px 6px 10px}
.app.rail .side-head h1,.app.rail .search,.app.rail .meta,.app.rail .side-foot .lbl{display:none}
.app.rail .item{justify-content:center;padding:9px 0;border-radius:14px;position:relative}
.app.rail .badge{position:absolute;top:2px;right:8px}
.app.rail .btn-dark{padding:11px 14px}
@media(max-width:900px){
  .app.side-open .sidebar{position:absolute;z-index:8;left:0;top:0;bottom:0;width:min(360px,90%);
    box-shadow:30px 0 80px rgba(0,0,0,.4);backdrop-filter:blur(30px)}
}
.rail-col{width:68px;flex:none;display:flex;flex-direction:column;border-right:1px solid var(--line)}
.folders-rail{flex:1;padding:14px 0;display:flex;flex-direction:column;align-items:center;gap:8px;overflow-y:auto}
.rail-foot{flex:none;padding:8px 0 12px;border-top:1px solid var(--line);display:flex;flex-direction:column;align-items:center;gap:2px}
.fbtn{width:52px;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 0;border-radius:14px;color:var(--dim);transition:.15s}
.fbtn:hover{background:var(--hover)}
.fbtn .fe{width:34px;height:34px;border-radius:50%;background:var(--hover);display:grid;place-items:center;font-size:15px;transition:.15s}
.fbtn.on{color:var(--text)} .fbtn.on .fe{background:var(--accent);color:var(--accent-ink)}
.fbtn small{font-size:9px;max-width:50px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fbtn.add .fe{border:1.5px dashed var(--dim);background:none;font-size:16px}
.fbtn.drop .fe{outline:2px dashed var(--accent);outline-offset:2px}
.side-head{display:flex;align-items:center;justify-content:space-between;padding:22px 20px 12px}
.side-head h1{font-size:26px;font-weight:500;letter-spacing:.3px}
.ibtn{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;color:var(--text);transition:.15s;flex:none}
.ibtn:hover{background:var(--hover)}
.search{margin:14px 8px 10px;padding:10px 14px;border-radius:14px;background:var(--hover);display:flex;gap:8px;align-items:center;color:var(--dim)}
.search input{flex:1;font-size:13px;color:var(--text)}
.chat-list{flex:1;overflow-y:auto;padding:4px 8px 8px}
.item{display:flex;gap:12px;align-items:center;padding:10px 12px;border-radius:16px;cursor:pointer;transition:.15s}
.item:hover{background:var(--hover)} .item.active{background:var(--active)}
.item.drag{opacity:.45}
.avatar{width:46px;height:46px;border-radius:50%;flex:none;display:grid;place-items:center;font-weight:600;font-size:15px;color:#fff;background:linear-gradient(135deg,var(--c1),var(--c2))}
.meta{flex:1;min-width:0}
.row1{display:flex;justify-content:space-between;gap:6px;align-items:center}
.row1 b{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:5px;min-width:0}
.row1 .pinmark{color:var(--accent)}
.row1 time{font-size:10.5px;color:var(--dim);flex:none}
.prev{font-size:12px;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:5px;margin-top:2px}
.badge{min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-size:11px;font-weight:700;display:grid;place-items:center;flex:none}
.empty{padding:30px 10px;text-align:center;color:var(--dim);font-size:12px}
.side-foot{padding:14px;display:flex;justify-content:center}
.btn-dark{display:flex;gap:8px;align-items:center;padding:11px 22px;border-radius:999px;background:rgba(12,14,16,.45);font-size:13.5px;font-weight:600;transition:.15s}
.btn-dark:hover{filter:brightness(1.25)}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 20px;border-bottom:1px solid var(--line)}
.ch-name{font-size:15px;font-weight:600}
.ch-status{font-size:11.5px;color:var(--dim)}
.head-actions{margin-left:auto;display:flex;gap:4px}
.topics{display:flex;gap:8px;padding:10px 16px;border-bottom:1px solid var(--line);overflow-x:auto;align-items:center;flex:none;scrollbar-width:none}
.topics::-webkit-scrollbar{height:0}
.topic{flex:none;display:flex;gap:6px;align-items:center;padding:7px 13px;border-radius:999px;background:var(--hover);font-size:12px;color:var(--dim);transition:.15s}
.topic:hover{background:var(--active)}
.topic.on{background:var(--accent);color:var(--accent-ink);font-weight:600}
.topic.add{border:1.5px dashed var(--dim);background:none}

/* Small-screen ergonomics, keyboard and safe-area support */
@media(max-width:760px){
  .app{position:fixed;inset:var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);width:auto;height:auto;min-height:0;border-radius:0;border:0;box-shadow:none}
  .sidebar{width:min(100%,420px)}
  .app:not(.side-open) .sidebar{display:none}
  .app.side-open .sidebar{position:absolute;inset:0 auto 0 0;width:min(88vw,360px);z-index:20}
  .chat{width:100%;min-width:0}
  .chat-head{min-height:58px;padding:7px 10px;gap:8px}
  .chat-head .avatar{width:38px;height:38px}
  .head-actions .ibtn{width:34px;height:34px}
  .chat-head .head-actions{gap:0}
  .messages{padding-left:10px;padding-right:10px}
  .composer{padding:8px 9px calc(8px + var(--safe-bottom))}
  .input{gap:5px}
  .input input,.input textarea{font-size:16px}
  .overlay{align-items:flex-end;padding:0}
  .overlay>.modal,.overlay>.modal-sm{width:100%!important;max-width:none;max-height:calc(92dvh - var(--safe-top));border-radius:22px 22px 0 0;padding:18px 16px calc(18px + var(--safe-bottom));overflow:auto}
  .auth-overlay{padding:calc(16px + var(--safe-top)) 12px calc(16px + var(--safe-bottom));overflow:auto}
  .auth-card{margin:auto;max-height:100%;overflow:auto}
  .contacts-modal{max-height:88dvh;min-height:60dvh}
  .contact-row{padding:8px 5px;gap:8px}
  .contact-actions .btn-ghost{padding:8px 7px}
  .feed-reader{padding-bottom:calc(20px + var(--safe-bottom))}
}
@media(max-width:420px){
  .chat-head .ch-status{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .chat-head .head-actions .ibtn{width:30px;height:34px}
  .contact-actions .contact-add{max-width:86px;overflow:hidden;text-overflow:ellipsis}
  .auth-card{padding:24px 20px!important}
}
@media(hover:none){.item:hover,.fbtn:hover,.ibtn:hover{background:transparent}.item:active,.fbtn:active,.ibtn:active{background:var(--active)}}