@import url("https://fonts.googleapis.com/css2?family=Vazirmatn:wght@400;500;600;700&display=swap");
:root{--app-bg:#e8eef2;--panel:#fff;--panel-soft:#f4f7f9;--line:#e5eaf0;--app-text:#182533;--muted:#80909e;--blue:#3390ec;--blue-dark:#247bc7;--teal:#d9fdd3;--bubble:#fff;--hover:#f1f6fa;--active:#e5f2ff;--shadow:0 10px 32px rgba(20,44,61,.12);--wallpaper:radial-gradient(circle at 15% 15%,rgba(87,166,197,.12) 0 2px,transparent 3px),radial-gradient(circle at 75% 65%,rgba(87,166,197,.1) 0 2px,transparent 3px),#dce8e9;color-scheme:light}
:root[data-theme="dark"]{--app-bg:#111923;--panel:#17212b;--panel-soft:#202c38;--line:#2c3946;--app-text:#e8eff5;--muted:#8b9bab;--blue:#3e9fea;--blue-dark:#2885cf;--teal:#244d44;--bubble:#202c38;--hover:#202d39;--active:#263f52;--bubble:#202c38;--wallpaper:radial-gradient(circle at 15% 15%,rgba(87,166,197,.08) 0 2px,transparent 3px),#0e1922;color-scheme:dark}
*{box-sizing:border-box}html,body{height:100%;width:100%;overflow:hidden}body{margin:0;background:var(--app-bg);color:var(--app-text);font-family:"Vazirmatn",Vazir,Tahoma,"Segoe UI",Arial,sans-serif;font-size:14px}.app-shell{height:100dvh;min-height:0;display:grid;grid-template-columns:350px minmax(0,1fr);max-width:1700px;margin:auto;background:var(--panel);box-shadow:var(--shadow);overflow:hidden}.sidebar{background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;min-width:0;min-height:0;z-index:3}.brand-row{height:70px;display:flex;align-items:center;gap:12px;padding:0 18px;border-bottom:1px solid var(--line);flex-shrink:0}.brand-mark{width:39px;height:39px;border-radius:50%;background:linear-gradient(135deg,#40a9f4,#1877cf);display:grid;place-items:center;color:white;font-size:22px;transform:rotate(-12deg);box-shadow:0 3px 8px #1984cf44}.brand-copy{display:flex;flex:1;flex-direction:column;gap:2px}.brand-copy strong{font-size:16px}.brand-copy span,.chat-title-wrap span{color:var(--muted);font-size:12px}.icon-button{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;font-size:20px;color:var(--muted);flex-shrink:0;transition:background .16s,color .16s}.icon-button:hover{background:var(--hover);color:var(--blue)}.sidebar-tools{padding:14px 14px 8px}.searchbox{height:42px;display:flex;align-items:center;gap:10px;padding:0 13px;border-radius:10px;background:var(--panel-soft);color:var(--muted);border:1px solid transparent}.searchbox:focus-within{border-color:var(--blue)}.searchbox span{font-size:24px;line-height:1}.searchbox input{background:transparent;outline:none;border:0;min-width:0;flex:1;color:var(--app-text);font-size:13px}.filter-tabs{display:flex;gap:5px;padding-top:10px;overflow-x:auto;scrollbar-width:none}.filter-tab{padding:6px 12px;border-radius:8px;font-size:12px;color:var(--muted);white-space:nowrap}.filter-tab:hover{background:var(--hover)}.filter-tab.active{background:var(--active);color:var(--blue);font-weight:700}.section-title{display:flex;align-items:center;justify-content:space-between;padding:11px 18px 8px;color:var(--muted);font-size:12px;font-weight:600}.count-pill{background:var(--panel-soft);padding:2px 8px;border-radius:12px}.channel-list{overflow:auto;flex:1;min-height:0;padding:0 6px 8px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}.channel-item{width:100%;display:flex;align-items:center;gap:12px;padding:10px;border-radius:11px;text-align:right;cursor:pointer;transition:background .14s;min-width:0}.channel-item:hover{background:var(--hover)}.channel-item.active{background:var(--active)}.avatar{width:48px;height:48px;flex:0 0 48px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#91d8c0,#479a8c);color:#fff;font-size:20px;font-weight:600;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.channel-meta{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}.channel-top,.channel-bottom{display:flex;align-items:center;justify-content:space-between;gap:7px;min-width:0}.channel-top strong{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}.channel-time{font-size:11px;color:var(--muted);white-space:nowrap}.channel-preview{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:230px}.channel-tags{display:flex;gap:4px;align-items:center}.tiny-tag{font-size:10px;color:var(--muted);background:var(--panel-soft);padding:2px 5px;border-radius:5px}.sidebar-footer{height:66px;border-top:1px solid var(--line);padding:0 13px;display:flex;align-items:center;gap:10px;flex-shrink:0}.footer-avatar{background:#cf9953;color:#fff;border-radius:50%;width:38px;height:38px;display:grid;place-items:center;font-weight:700}.footer-user{display:flex;flex-direction:column;gap:3px;flex:1;min-width:0}.footer-user strong{font-size:12px}.footer-user span{font-size:11px;color:var(--muted)}.chat-pane{display:flex;flex-direction:column;min-width:0;min-height:0;position:relative;background:var(--wallpaper);background-size:32px 32px}.chat-header{height:70px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--panel);border-bottom:1px solid var(--line);padding:0 18px;flex-shrink:0}.chat-identity{display:flex;align-items:center;gap:12px;min-width:0}.avatar-large{width:44px;height:44px;flex-basis:44px;font-size:18px}.chat-title-wrap{display:flex;flex-direction:column;gap:5px;min-width:0}.chat-title-wrap strong{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-actions{display:flex;gap:4px}.messages{flex:1;min-height:0;overflow:auto;padding:24px clamp(12px,4vw,70px) 32px;scroll-behavior:smooth;display:flex;flex-direction:column;gap:10px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}.date-chip{margin:8px auto 12px;background:#263743b8;color:#fff;border-radius:20px;padding:5px 12px;font-size:11px;box-shadow:0 1px 3px #0001;align-self:center}.message-row{display:flex;align-items:flex-end;gap:8px;max-width:min(760px,88%);align-self:flex-start;direction:rtl}.message-row.mine{align-self:flex-end}.message-bubble{min-width:80px;max-width:100%;position:relative;background:var(--bubble);border:1px solid #00000008;border-radius:14px 14px 14px 4px;padding:10px 12px 7px;box-shadow:0 1px 1px #10202b0b;overflow:hidden}.message-row.mine .message-bubble{background:var(--teal);border-radius:14px 14px 4px 14px}.message-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.85;font-size:14px}.message-caption{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;margin-top:7px;font-size:13px}.message-media{display:block;margin:-2px -4px 0;max-width:min(100%,560px);border-radius:10px;overflow:hidden}.message-media img,.message-media video{width:100%;max-height:420px;object-fit:contain;background:#000;border-radius:9px;cursor:zoom-in}.message-media audio{width:min(360px,65vw);max-width:100%;display:block;margin:4px 0}.message-doc{display:flex;align-items:center;gap:10px;background:var(--panel-soft);padding:10px;border-radius:10px;min-width:min(260px,65vw);direction:ltr;text-align:left}.doc-symbol{width:40px;height:44px;border-radius:8px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700}.doc-info{flex:1;min-width:0}.doc-info strong{display:block;font-size:12px;overflow-wrap:anywhere}.doc-info span{font-size:11px;color:var(--muted)}.doc-info a{color:var(--blue);text-decoration:none}.message-meta{margin-top:3px;display:flex;align-items:center;justify-content:flex-end;gap:5px;color:var(--muted);font-size:10px;direction:ltr}.message-kind{font-size:10px;opacity:.8}.audio-card{width:min(365px,70vw);max-width:100%;display:grid;grid-template-columns:40px minmax(0,1fr);align-items:center;gap:9px;direction:ltr}.audio-play{width:40px;height:40px;border-radius:50%;background:var(--blue);color:#fff;font-size:17px;display:grid;place-items:center}.audio-main{min-width:0}.audio-title{font-size:12px;direction:rtl;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:5px}.audio-controls{display:flex;align-items:center;gap:6px}.audio-seek{width:100%;min-width:60px;accent-color:var(--blue)}.audio-time{font-size:10px;color:var(--muted);white-space:nowrap}.audio-speed{font-size:10px;border-radius:8px;padding:4px;color:var(--blue);background:var(--active)}.audio-extra{grid-column:1/-1;display:flex;align-items:center;gap:10px;padding:2px 0 0}.audio-extra input[type=range]{width:95px;accent-color:var(--blue)}.waveform{height:25px;display:flex;align-items:center;gap:2px;overflow:hidden;opacity:.8}.waveform i{display:block;width:3px;max-height:22px;background:var(--blue);border-radius:5px;min-height:5px}.message-link{color:var(--blue);text-decoration:none;overflow-wrap:anywhere}.message-link:hover{text-decoration:underline}.welcome-card{margin:auto;text-align:center;max-width:440px;padding:25px}.welcome-illustration{width:76px;height:76px;margin:0 auto 20px;border-radius:50%;background:linear-gradient(145deg,#59b7e8,#277dba);color:#fff;font-size:34px;display:grid;place-items:center;box-shadow:0 8px 25px #1575b533}.welcome-card h1{font-size:21px;margin:0 0 10px}.welcome-card p{line-height:1.9;color:var(--muted);font-size:13px}.welcome-card span{display:inline-block;color:var(--muted);font-size:11px;background:var(--panel);border-radius:15px;padding:7px 12px}.empty-state{color:var(--muted);text-align:center;padding:24px;font-size:12px;line-height:1.8}.bottom-hint{align-self:center;background:#243540b8;color:white;border-radius:20px;padding:6px 12px;font-size:11px;margin:-18px 0 12px;z-index:1}.in-channel-search{background:var(--panel);padding:10px 18px;border-bottom:1px solid var(--line);display:flex;gap:8px}.in-channel-search input{flex:1;min-width:0;background:var(--panel-soft);border-radius:8px;padding:9px 12px;outline:none}.text-button{color:var(--blue);padding:7px;border-radius:7px;font-size:12px}.text-button:hover{background:var(--hover)}.gallery-strip{background:var(--panel);border-bottom:1px solid var(--line);padding:12px 18px;max-height:190px;overflow:auto;flex-shrink:0}.gallery-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-size:12px}.gallery-items{display:flex;gap:8px;overflow-x:auto}.gallery-item{width:100px;height:95px;flex:0 0 100px;border-radius:9px;overflow:hidden;background:var(--panel-soft);position:relative;cursor:pointer}.gallery-item img,.gallery-item video{width:100%;height:100%;object-fit:cover}.gallery-item span{position:absolute;bottom:0;left:0;right:0;background:#0009;color:#fff;font-size:10px;padding:3px 5px;text-align:center}.modal,.media-modal{border:0;padding:0;background:transparent;color:var(--app-text);max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px)}.modal::backdrop,.media-modal::backdrop{background:#07121dcc;backdrop-filter:blur(4px)}.modal-card{width:min(540px,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow:auto;padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.modal-heading{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.modal-heading h2{font-size:18px;margin:0 0 6px}.modal-heading p,.muted{color:var(--muted);font-size:12px;line-height:1.8;margin:0 0 12px}.notice{background:var(--panel-soft);border-right:3px solid #e4ad50;border-radius:8px;padding:11px 13px;margin:12px 0 20px;font-size:12px;line-height:1.9}.notice p{margin:5px 0 0}.modal-card h3{font-size:13px;margin:0 0 7px}.small{font-size:11px}.profile-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0}.profile-controls input{width:100%;min-width:0;border:1px solid var(--line);border-radius:8px;padding:10px;background:var(--panel-soft);outline-color:var(--blue);font-size:12px}.primary-button,.secondary-button{padding:10px 14px;border-radius:8px;font-size:12px}.primary-button{background:var(--blue);color:white;grid-column:1/-1}.primary-button:hover{background:var(--blue-dark)}.secondary-button{background:var(--panel-soft)}.profile-list{display:flex;flex-direction:column;gap:7px}.profile-row{display:flex;align-items:center;gap:8px;padding:9px;background:var(--panel-soft);border-radius:8px}.profile-row span{flex:1;font-size:12px}.profile-row button{font-size:11px;color:#d9534f}.modal-actions{display:flex;justify-content:flex-end;margin-top:18px}.media-modal{width:100%;height:100%;max-width:100vw;max-height:100dvh}.media-modal-inner{height:100dvh;width:100vw;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:46px 18px 24px;position:relative}.media-modal-inner img,.media-modal-inner video{max-width:min(100%,1300px);max-height:78dvh;object-fit:contain;border-radius:10px}.media-modal-inner audio{width:min(600px,90vw)}.media-modal-inner p{color:#fff;text-align:center;max-width:700px;line-height:1.8}.media-close{position:absolute;top:12px;left:16px;color:white;background:#ffffff20;border-radius:50%;width:40px;height:40px;font-size:25px}.mobile-only{display:none}
@media(min-width:1500px){.app-shell{grid-template-columns:390px minmax(0,1fr)}.messages{padding-inline:clamp(55px,8vw,150px)}}
@media(max-width:850px){.app-shell{grid-template-columns:310px minmax(0,1fr)}.messages{padding-inline:15px}.message-row{max-width:94%}}
@media(max-width:640px){.app-shell{display:block;position:relative}.sidebar{position:absolute;inset:0;width:100%;height:100%;border:0;transform:translateX(0);transition:transform .2s ease;z-index:4}.chat-pane{position:absolute;inset:0;width:100%;height:100%;visibility:hidden;transform:translateX(-12px);transition:transform .2s ease,visibility .2s}.app-shell.show-chat .sidebar{transform:translateX(100%);visibility:hidden}.app-shell.show-chat .chat-pane{visibility:visible;transform:translateX(0)}.mobile-only{display:grid}.brand-row{height:60px}.chat-header{height:60px;padding:0 10px}.avatar-large{width:40px;height:40px;flex-basis:40px}.header-actions{gap:0}.messages{padding:15px 10px 26px}.message-row{max-width:96%}.message-bubble{padding:9px 10px 6px}.message-media img,.message-media video{max-height:340px}.sidebar-footer{height:58px}.gallery-strip{max-height:155px}.profile-controls{grid-template-columns:1fr}.profile-controls .primary-button{grid-column:auto}}

/* Polished interaction states and accessible keyboard focus. */
button,input,a{font:inherit}button{cursor:pointer;transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--blue);outline-offset:2px}.message-bubble{transition:box-shadow .16s ease}.message-row:hover .message-bubble{box-shadow:0 4px 16px rgba(20,44,61,.08)}.message-media img:hover,.gallery-item:hover{filter:brightness(.97)}.gallery-item:hover{transform:translateY(-2px)}.channel-item:focus-visible,.icon-button:focus-visible{outline-offset:-2px}.message-text a{overflow-wrap:anywhere}


/* Advanced archive controls */
.advanced-toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--panel);z-index:3}
.advanced-toolbar button,.advanced-toolbar select,.advanced-toolbar input,.advanced-panel button,.advanced-panel select,.advanced-panel input{font:inherit;color:var(--app-text);background:var(--panel-soft);border:1px solid var(--line);border-radius:9px;padding:8px 10px;min-width:0}
.advanced-toolbar button,.advanced-panel button{cursor:pointer}
.advanced-toolbar button:hover,.advanced-panel button:hover{border-color:var(--blue)}
.advanced-toolbar .adv-primary{background:var(--blue);color:#fff;border-color:transparent}
.advanced-panel{background:var(--panel);border-bottom:1px solid var(--line);padding:12px 14px;max-height:45vh;overflow:auto}
.advanced-panel[hidden]{display:none!important}
.advanced-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:8px;margin:10px 0}
.advanced-results{display:grid;gap:7px;margin-top:10px}
.advanced-result{width:100%;text-align:right;display:block;background:var(--panel-soft);border:1px solid var(--line);border-radius:10px;padding:10px;cursor:pointer;color:var(--app-text)}
.advanced-result strong{display:block;margin-bottom:4px}
.advanced-result small{display:block;color:var(--muted);margin-top:5px}
.advanced-chip{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);border-radius:999px;padding:3px 8px;font-size:11px;margin:2px}
.advanced-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}
.advanced-gallery-item{background:var(--panel-soft);border:1px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;text-align:right;color:var(--app-text);padding:0}
.advanced-gallery-item img,.advanced-gallery-item video{display:block;width:100%;height:110px;object-fit:cover;background:#111}
.advanced-gallery-item span{display:block;padding:8px;font-size:12px;overflow-wrap:anywhere}
.message-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}
.message-actions button{border:1px solid var(--line);border-radius:7px;background:var(--panel-soft);color:var(--muted);font-size:11px;padding:4px 7px;cursor:pointer}
.message-actions button.is-saved{color:var(--blue);border-color:var(--blue)}
.bookmark-list{display:grid;gap:8px}
.bookmark-entry{border:1px solid var(--line);border-radius:10px;padding:10px;background:var(--panel-soft)}
.bookmark-entry p{white-space:pre-wrap;overflow-wrap:anywhere;margin:6px 0}
.reading-mode .message-bubble{max-width:min(900px,92%);font-size:1.08rem;line-height:2.15;padding:20px 24px}
.reading-mode .message-row{justify-content:center}
.reading-mode .message-media img{max-height:520px;object-fit:contain}
.reading-mode .sidebar{opacity:.28;transition:opacity .2s}
.reading-mode .sidebar:hover{opacity:1}
[data-theme="midnight"]{--app-bg:#101522;--panel:#171f30;--panel-soft:#202b40;--app-text:#e7edf7;--muted:#9caec6;--line:#2d3a50;--blue:#78a9ff}
[data-theme="sepia"]{--app-bg:#f2e7d3;--panel:#fbf2e3;--panel-soft:#efe2cc;--app-text:#4d3928;--muted:#8b745d;--line:#dcc9ac;--blue:#9a6238}
[data-theme="forest"]{--app-bg:#101e1a;--panel:#172a24;--panel-soft:#20372f;--app-text:#e2f1e9;--muted:#9bb9aa;--line:#304c40;--blue:#68c99a}
.archive-status-card{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:8px 0;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--panel-soft);font-size:12px}
.archive-status-card .status-dot{width:8px;height:8px;border-radius:50%;background:#2da66b;display:inline-block}
.adv-inline-notice{padding:8px 10px;background:var(--panel-soft);border-radius:8px;color:var(--muted);font-size:12px}
@media(max-width:700px){.advanced-toolbar{padding:8px;gap:6px}.advanced-toolbar button{font-size:12px;padding:7px}.advanced-panel{max-height:50vh}.reading-mode .message-bubble{max-width:96%;padding:14px}}