:root{--primary:#ef3338;--primary-2:#d6282d;--primary-soft:#f8e8e7;--bg:#f5f5f3;--surface:#ffffff;--surface-2:#f0f1f2;--ink:#171717;--ink-muted:#70757d;--border:#e5e5e5;--online:#16a34a;--danger:#ef3338;--warning:#b45309;--bubble-in:#ffffff;--bubble-out:var(--primary);--bubble-out-ink:#ffffff;--shadow:0 1px 3px rgba(23,23,23,0.08),0 8px 24px rgba(23,23,23,0.06);--rail:76px;--list:340px;--details:300px;--avatar:#9aa1a9;--radius-sm:10px;--radius:14px;--radius-lg:18px}:root[data-theme=dark]{--primary:#f05055;--primary-2:#f16266;--primary-soft:rgba(240,80,85,0.16);--bg:#141517;--surface:#1c1e21;--surface-2:#26282c;--ink:#f2f3f5;--ink-muted:#9aa1a9;--border:#2e3135;--online:#22c55e;--danger:#f05055;--warning:#f59e0b;--bubble-in:#26282c;--bubble-out:var(--primary);--bubble-out-ink:#ffffff;--shadow:0 1px 3px rgba(0,0,0,0.4);--avatar:#565c64}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased}.brand,h1,h2,h3,h4{font-family:Manrope,system-ui,sans-serif;margin:0}button{font:inherit;background:none;border:0;cursor:pointer}a,button{color:inherit}a{text-decoration:none}input,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.muted{color:var(--ink-muted)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(1100px 520px at 12% -10%,var(--primary-soft),transparent 60%),var(--bg)}.login-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px}.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}.login-logo{width:44px;height:44px;border-radius:13px;background:var(--primary);display:grid;place-items:center;color:#fff;font-weight:800;font-family:Manrope,sans-serif}.login-card h1{font-size:22px;font-weight:800;letter-spacing:-.2px}.login-card p.lead{color:var(--ink-muted);margin:10px 0 22px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:12px;font-weight:600;border:1px solid transparent;transition:background .15s,border-color .15s,transform .05s}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-2)}.btn-secondary{background:var(--surface-2);border-color:var(--border)}.btn-secondary:hover{background:var(--border)}.btn-block{width:100%}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{color:var(--ink-muted)}.btn-ghost:hover{color:var(--ink)}.login-error{margin-top:16px;padding:11px 14px;border-radius:var(--radius-sm);background:var(--primary-soft);color:var(--primary-2);font-size:13px}.login-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--border);color:var(--ink-muted);font-size:12.5px}.app{height:100vh;display:grid;grid-template-columns:var(--rail) var(--list) minmax(0,1fr);overflow:hidden}.app.with-details{grid-template-columns:var(--rail) var(--list) minmax(0,1fr) var(--details)}.rail{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 10px}.rail-logo{width:42px;height:42px;background:var(--primary);color:#fff;place-items:center;font-weight:800;font-family:Manrope,sans-serif;margin-bottom:10px}.rail-item,.rail-logo{border-radius:13px;display:grid}.rail-item{width:46px;height:46px;place-items:center;color:var(--ink-muted);position:relative}.rail-item:hover{background:var(--surface-2);color:var(--ink)}.rail-item.active{background:var(--primary-soft);color:var(--primary)}.rail-badge{position:absolute;top:6px;right:6px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--primary);color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center}.rail-spacer{flex:1 1}.rail-avatar{width:40px;height:40px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;font-weight:700;font-size:13px;border:1px solid var(--border);overflow:hidden}.list{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0}.list-head{padding:16px 16px 10px;display:flex;align-items:center;justify-content:space-between;gap:10px}.list-head h1{font-size:21px;font-weight:800;letter-spacing:-.3px}.icon-btn{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--ink-muted)}.icon-btn:hover{color:var(--ink)}.icon-btn:hover,.search{background:var(--surface-2)}.search{margin:0 16px 10px;display:flex;align-items:center;gap:9px;border:1px solid transparent;border-radius:12px;padding:0 12px;height:42px}.search:focus-within{border-color:var(--primary);background:var(--surface)}.search input{border:0;background:none;outline:none;width:100%;height:100%}.chips{display:flex;gap:8px;padding:0 16px 10px;overflow-x:auto;scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.chip{flex:none;height:32px;padding:0 13px;border-radius:999px;border:1px solid var(--border);color:var(--ink-muted);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:6px}.chip.active{background:var(--primary-soft);border-color:transparent;color:var(--primary-2)}.chip .dot{min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--primary);color:#fff;font-size:11px;display:grid;place-items:center}.conv-scroll{flex:1 1;overflow-y:auto;padding-bottom:14px}.conv{display:flex;gap:12px;padding:11px 16px;align-items:center;cursor:pointer;border-left:3px solid transparent}.conv:hover{background:var(--surface-2)}.conv.active{background:var(--primary-soft);border-left-color:var(--primary)}.conv-main{flex:1 1;min-width:0}.conv-top{display:flex;justify-content:space-between;gap:8px;align-items:baseline}.conv-name{font-weight:700;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-time{flex:none;font-size:12px;color:var(--ink-muted)}.conv-bottom{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-top:2px}.conv-preview{color:var(--ink-muted);font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-preview strong{color:var(--ink);font-weight:600}.conv-badge{flex:none;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--primary);color:#fff;font-size:11.5px;font-weight:700;display:grid;place-items:center}.conv-badge.muted{background:var(--surface-2);color:var(--ink-muted)}.list-empty{padding:40px 24px;text-align:center;color:var(--ink-muted);font-size:13.5px}.avatar{width:46px;height:46px;border-radius:50%;flex:none;background:var(--surface-2);color:var(--ink);display:grid;place-items:center;font-weight:700;font-size:14px;overflow:hidden;border:1px solid var(--border);position:relative}.avatar.square{border-radius:15px}.avatar.sm{width:34px;height:34px;font-size:12px}.avatar.lg{width:64px;height:64px;font-size:20px}.avatar img{width:100%;height:100%;object-fit:cover}.avatar .presence{position:absolute;right:-1px;bottom:-1px;width:12px;height:12px;border-radius:50%;background:var(--online);border:2px solid var(--surface)}.chat{display:flex;flex-direction:column;min-width:0;background:var(--bg)}.chat-head{height:68px;flex:none;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;padding:0 16px}.chat-head-main{flex:1 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var(--border);border-radius:var(--radius) var(--radius) var(--radius) 4px;padding:9px 13px 7px;box-shadow:0 1px 1px rgba(23,23,23,.03);min-width:90px}.msg.out .bubble{background:var(--bubble-out);color:var(--bubble-out-ink);border-color:transparent;border-radius:var(--radius) var(--radius) 4px var(--radius)}.msg-sender{font-size:12.5px;font-weight:700;color:var(--primary-2);margin-bottom:2px}.msg-body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14.5px}.msg-meta{display:flex;align-items:center;justify-content:flex-end;gap:5px;margin-top:3px;font-size:11.5px;color:var(--ink-muted)}.msg.out .msg-meta{color:rgba(255,255,255,.82)}.msg-meta .read{font-weight:700}.msg-quote{border-left:3px solid var(--border);padding:3px 0 3px 9px;margin-bottom:5px;font-size:13px;color:var(--ink-muted);background:var(--surface-2);border-radius:4px}.msg-reactions{display:flex;gap:5px;margin-top:5px;flex-wrap:wrap}.reaction{display:inline-flex;align-items:center;gap:4px;padding:1px 8px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);font-size:12px}.reaction.mine{background:var(--primary-soft);border-color:transparent}.att{display:flex;align-items:center;gap:10px;margin-top:6px;padding:9px 11px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border);max-width:340px}.att img{max-width:100%;border-radius:var(--radius-sm);display:block}.att-name{font-weight:600;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.att-sub{font-size:12px}.att-sub,.typing{color:var(--ink-muted)}.typing{align-self:flex-start;font-size:12.5px;padding:4px 6px}.composer{flex:none;padding:12px 16px 16px;background:var(--bg)}.composer-box{display:flex;align-items:flex-end;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:8px 10px;box-shadow:var(--shadow)}.composer-box textarea{flex:1 1;border:0;outline:none;resize:none;background:none;max-height:148px;padding:8px 4px}.composer-send{width:42px;height:42px;border-radius:13px;background:var(--primary);color:#fff;display:grid;place-items:center;flex:none}.composer-send:disabled{opacity:.45;cursor:not-allowed}.composer-hint{margin-top:8px;font-size:12px;color:var(--ink-muted);display:flex;justify-content:space-between;gap:10px}.details{background:var(--surface);border-left:1px solid var(--border);overflow-y:auto;display:flex;flex-direction:column}.details-head{padding:20px 18px 14px;text-align:center;border-bottom:1px solid var(--border)}.details-head .avatar{margin:0 auto 10px}.details-name{font-weight:800;font-size:16.5px;font-family:Manrope,sans-serif}.details-sub{color:var(--ink-muted);font-size:12.5px;margin-top:2px}.details-actions{display:flex;justify-content:center;gap:8px;margin-top:14px;flex-wrap:wrap}.section{padding:16px 18px;border-bottom:1px solid var(--border)}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.section-head h2{font-size:13px;font-weight:800;letter-spacing:.02em;text-transform:uppercase;color:var(--ink-muted)}.member{display:flex;align-items:center;gap:10px;padding:7px 0}.member-main{min-width:0}.member-name{font-weight:600;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.member-role{font-size:12px;color:var(--ink-muted)}.file-row{display:flex;align-items:center;gap:10px;padding:8px 0}.field{display:block;margin-bottom:14px}.field>span{display:block;font-size:12.5px;font-weight:600;color:var(--ink-muted);margin-bottom:6px}.field input,.field select,.field textarea{width:100%;height:42px;border-radius:12px;border:1px solid var(--border);background:var(--surface);padding:0 12px;outline:none}.field textarea{height:auto;min-height:84px;padding:10px 12px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary)}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0}.switch-row .label{font-weight:600;font-size:13.5px}.switch-row .hint{font-size:12px;color:var(--ink-muted)}.switch{flex:none;width:46px;height:26px;border-radius:999px;background:var(--border);position:relative;transition:background .15s}.switch[aria-checked=true]{background:var(--primary)}.switch:after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .15s}.switch[aria-checked=true]:after{transform:translateX(20px)}.request-card{margin:0 16px 12px;padding:14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.request-head{display:flex;gap:11px;align-items:center}.request-text{margin:11px 0;padding:10px 12px;border-radius:var(--radius-sm);background:var(--surface-2);color:var(--ink-muted);font-size:13.5px}.request-actions{display:flex;gap:8px}.request-actions .btn{min-height:38px;padding:0 14px;border-radius:11px;font-size:13.5px}.notice{display:flex;gap:10px;align-items:flex-start;margin:12px 16px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--primary-soft);color:var(--primary-2);font-size:13px}.notice.warn{background:rgba(180,83,9,.1);color:var(--warning)}.badge-soft{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);font-size:11.5px;font-weight:600;color:var(--ink-muted)}.badge-soft.new{background:var(--primary-soft);border-color:transparent;color:var(--primary-2)}.bottom-nav,.mobile-only{display:none}@media (max-width:1180px){.app,.app.with-details{grid-template-columns:var(--rail) var(--list) minmax(0,1fr)}.details{display:none}.details.open{display:flex;position:fixed;inset:0 0 0 auto;width:min(360px,92vw);z-index:40;box-shadow:var(--shadow)}}@media (max-width:760px){.app,.app.with-details{grid-template-columns:1fr;height:100dvh}.rail{display:none}.list{border-right:0}.app.chat-open .list,.app:not(.chat-open) .chat{display:none}.chat-head{height:60px}.mobile-only{display:inline-flex}.msg{max-width:88%}.composer{padding:10px 10px 12px}.bottom-nav{display:flex;flex:none;border-top:1px solid var(--border);background:var(--surface)}.bottom-nav a{flex:1 1;padding:9px 0 7px;display:grid;justify-items:center;grid-gap:2px;gap:2px;font-size:11px;color:var(--ink-muted);position:relative}.bottom-nav a.active{color:var(--primary)}.bottom-nav .rail-badge{top:4px;right:calc(50% - 22px)}}