:root{color-scheme:light;--ink: #18202f;--muted: #667085;--line: #d9dee8;--panel: #f7f8fb;--panel-strong: #eef2f7;--brand: #1f7a68;--brand-dark: #155a4d;--danger: #b42318;--white: #ffffff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--white)}button,input,textarea{font:inherit}button{border:0;cursor:pointer}input,textarea{width:100%;min-width:0;border:1px solid var(--line);border-radius:6px;padding:11px 12px;color:var(--ink);background:var(--white)}textarea{min-height:140px;resize:vertical;line-height:1.45}button:not(.room):not(.text-button):not(.icon-button):not(.close):not(.ghost){border-radius:6px;padding:11px 14px;color:var(--white);background:var(--brand);white-space:nowrap}button:hover{filter:brightness(.96)}.auth{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(120deg,rgba(31,122,104,.09),transparent 35%),linear-gradient(300deg,rgba(44,88,138,.1),transparent 38%),#fbfcfe}.auth-panel{width:min(440px,100%);border:1px solid var(--line);border-radius:8px;padding:28px;background:var(--white);box-shadow:0 18px 60px #18202f14}.admin-login{position:fixed;top:16px;left:16px;width:min(360px,calc(100vw - 32px));display:flex;gap:8px}.admin-login input{height:40px;background:#ffffffeb}.admin-login button{height:40px}.brand-mark{width:44px;height:44px;display:grid;place-items:center;border-radius:8px;color:var(--white);background:var(--brand);font-weight:800}.auth h1{margin:18px 0 8px;font-size:32px}.auth p{color:var(--muted);line-height:1.5}.stack{display:grid;gap:9px;margin-top:18px}.hidden{display:none}.note{min-height:22px;color:var(--muted);font-size:14px}.layout{height:100vh;display:grid;grid-template-columns:300px minmax(0,1fr) 280px;overflow:hidden}.sidebar,.members{min-width:0;background:var(--panel);border-right:1px solid var(--line)}.members{border-right:0;border-left:1px solid var(--line)}.sidebar-top,.chat-top,.members-top{min-height:72px;display:flex;align-items:center;gap:14px;padding:14px 16px;border-bottom:1px solid var(--line)}.sidebar-top{justify-content:space-between}.sidebar-top span,.chat-top span,.member span,.room small,.invite small,.members-top span{display:block;overflow:hidden;color:var(--muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.icon-button{width:38px;height:38px;border-radius:50%;color:var(--white);background:var(--brand);font-size:24px;line-height:1}.rooms{height:calc(100vh - 124px);overflow-y:auto;padding:10px}.room{width:100%;display:grid;gap:5px;margin-bottom:4px;border-radius:6px;padding:12px;color:var(--ink);background:transparent;text-align:left}.room span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.room.active,.room:hover{background:var(--panel-strong)}.text-button{width:calc(100% - 20px);margin:0 10px 10px;border:1px solid var(--line);border-radius:6px;padding:10px;color:var(--ink);background:var(--white)}.chat{min-width:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:var(--white)}.chat-top{justify-content:space-between}.chat-top h1{margin:0;max-width:38vw;overflow:hidden;font-size:22px;text-overflow:ellipsis;white-space:nowrap}.invite{min-width:132px;text-align:right}.invite code{display:block;font-size:15px;font-weight:800;letter-spacing:0}.ghost{border:1px solid var(--line);border-radius:6px;padding:10px 12px;background:var(--white)}.danger{color:var(--danger)!important}.message-list{overflow-y:auto;padding:18px 22px;background:#fbfcfe}.message{max-width:min(680px,86%);margin:0 0 12px;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--white)}.message.mine{margin-left:auto;border-color:#1f7a6840;background:#eef8f5}.message div{display:flex;gap:10px;align-items:baseline}.message time{color:var(--muted);font-size:12px}.message p{margin:6px 0 0;overflow-wrap:anywhere;white-space:pre-wrap;line-height:1.45}.request-actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:10px}.request-actions span{color:var(--muted);font-size:12px}.request-actions button{border:1px solid var(--line);border-radius:6px;padding:8px 10px;color:var(--ink);background:var(--white);font-size:12px}.composer{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line)}.composer input{flex:1}.members-top{justify-content:space-between}.members-top h2{margin:0;font-size:18px}.member-list{height:calc(100vh - 72px);overflow-y:auto;padding:10px}.member{display:grid;gap:7px;border-bottom:1px solid var(--line);padding:12px 2px}.member strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.member small{color:var(--muted)}.member-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.member-actions button{border:1px solid var(--line);border-radius:6px;padding:8px 6px;color:var(--ink);background:var(--white);font-size:12px}.empty,.empty-state{color:var(--muted)}.empty-state{align-self:center;justify-self:center;text-align:center}dialog{width:min(560px,calc(100vw - 24px));border:0;border-radius:8px;padding:0;box-shadow:0 24px 80px #18202f38}dialog::backdrop{background:#18202f6b}.dialog-card{position:relative;display:grid;gap:10px;padding:22px}.dialog-card h2{margin:0 0 8px}.close{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;color:var(--ink);background:var(--panel);font-size:22px}.inline{display:flex;gap:10px}@media(max-width:980px){.layout{grid-template-columns:250px minmax(0,1fr)}.members{display:none}}@media(max-width:680px){.layout{grid-template-columns:1fr;grid-template-rows:220px minmax(0,1fr)}.sidebar{border-right:0;border-bottom:1px solid var(--line)}.rooms{height:96px}.chat-top{align-items:flex-start;flex-wrap:wrap}.chat-top h1{max-width:100%}.message{max-width:96%}}