:root{color-scheme:dark;--bg:#0c1422;--panel:#152238;--line:#293b55;--text:#edf4ff;--muted:#9aabc2;--accent:#64c7b5;--danger:#d87979}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 15% 0%,#1d3b50 0,transparent 42%),radial-gradient(ellipse at 90% 90%,#20314d 0,transparent 40%),var(--bg);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--text);padding:24px}
a{color:#83d9ca;text-decoration:none}.shell{max-width:1120px;margin:0 auto}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 2px 24px;border-bottom:1px solid #ffffff16}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#76d7c4,#3d8f9a);color:#102532;font-weight:900;font-size:21px}.brand strong{display:block;font-size:17px}.brand small{display:block;color:var(--muted);font-size:12px;margin-top:3px}.account-area{color:var(--muted);font-size:13px}.account-area button,.tab,.secondary{background:transparent;border:1px solid var(--line);color:var(--text);padding:8px 13px;border-radius:9px;cursor:pointer}.auth-panel{display:grid;grid-template-columns:1fr 360px;gap:50px;align-items:center;max-width:780px;margin:90px auto}.eyebrow{color:var(--accent);letter-spacing:4px;font-size:11px}.intro h1{font-size:32px;margin:12px 0}.intro p,.auth-card label{color:var(--muted)}.auth-card,.chat-main,.side-card,.pending-panel,.admin-card,.stat-card{background:#142238ef;border:1px solid var(--line);border-radius:18px;box-shadow:0 22px 70px #0003}.auth-card{padding:24px}.tabs{display:flex;gap:8px;margin-bottom:22px}.tab.active{background:#25495a;border-color:#4a8e91}.auth-card label{display:block;font-size:13px;margin:14px 0}.auth-card input,.composer input,.side-card select{display:block;width:100%;margin-top:8px;padding:13px 14px;background:#0d192a;border:1px solid var(--line);border-radius:10px;color:var(--text);outline:none}.auth-card input:focus,.composer input:focus,.side-card select:focus{border-color:var(--accent)}.primary{border:0;border-radius:10px;background:linear-gradient(135deg,#78d8c3,#4e9fa7);color:#0b2630;font-weight:750;padding:13px 18px;cursor:pointer}.primary:disabled{opacity:.55;cursor:wait}.auth-card .primary{width:100%;margin-top:8px}.notice{color:#ffb4a8;font-size:13px;min-height:18px}.chat-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:16px;margin:28px auto 0;align-items:start}.chat-main{overflow:hidden;min-width:0}.chat-heading{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.chat-heading strong{font-size:16px}.chat-heading small{display:block;color:var(--muted);font-size:12px;margin:6px 0 0 15px}.live-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#62d4a8;margin-right:9px}.online-label{font-size:12px;color:var(--muted)}.messages{height:min(58vh,560px);min-height:300px;overflow:auto;padding:20px 22px}.empty{color:var(--muted);text-align:center;padding:40px}.message{margin:0 0 17px;max-width:85%}.message.mine{margin-left:auto;text-align:right}.meta{font-size:12px;color:var(--muted);margin-bottom:5px}.bubble{display:inline-block;text-align:left;padding:10px 13px;border-radius:13px;background:#223650;line-height:1.55;overflow-wrap:anywhere;white-space:pre-wrap;max-width:100%}.mine .bubble{background:#245b5b}.chat-image{display:block;max-width:min(100%,420px);max-height:360px;border-radius:9px;cursor:zoom-in}.composer-tools{display:flex;align-items:center;gap:12px;padding:12px 18px 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.image-pick{border:1px solid var(--line);padding:7px 12px;border-radius:8px;cursor:pointer;color:var(--text)}.image-pick:hover,.secondary:hover{border-color:var(--accent)}.paste-hint{opacity:.8}.composer{display:flex;gap:10px;padding:12px 18px}.composer input{margin:0;flex:1;min-width:0}.send{min-width:84px}.chat-error{padding:0 18px}.side-panel{display:grid;gap:14px}.side-card{padding:16px}.side-card h3{font-size:14px;margin:0 0 8px}.side-card p,.side-card small{font-size:12px;color:var(--muted);line-height:1.6}.side-card select{margin:12px 0 8px}.side-title{display:flex;align-items:center;justify-content:space-between}.side-title h3,.side-title h2{margin:0}.count{background:#25495a;border-radius:20px;padding:3px 9px;font-size:12px}.presence-legend{display:flex;gap:14px;color:var(--muted);font-size:11px;margin:10px 0}.online-dot,.offline-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:7px;background:#55d49c}.offline-dot{background:#77869b}.presence-user{display:flex;align-items:center;padding:7px 0;border-top:1px solid #ffffff0c;font-size:13px}.presence-user small{margin-left:auto}.full{width:100%;font-size:12px}.admin-link{display:block;padding:13px 15px;border:1px solid #3e7775;border-radius:12px;text-align:center;background:#17363b}.pending-panel{max-width:560px;margin:80px auto;text-align:center;padding:42px 28px}.pending-panel h2{margin:8px 0}.pending-icon{font-size:38px}.muted{color:var(--muted)}.secondary{padding:9px 13px}.pending-panel .secondary{margin-top:14px}footer{text-align:center;color:#71839b;font-size:12px;padding:24px 8px}.hidden{display:none!important}
.admin-shell{max-width:1000px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}.stat-card{padding:20px}.stat-card small{display:block;color:var(--muted)}.stat-card strong{display:block;font-size:28px;margin-top:7px}.admin-card{padding:20px;margin:16px 0}.admin-card h2{font-size:17px;margin:0 0 12px}.admin-list{margin-top:12px}.admin-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid #ffffff12}.admin-info{font-size:13px;overflow-wrap:anywhere;min-width:0}.admin-actions{display:flex;gap:8px;flex-shrink:0}.small-button{padding:8px 11px;font-size:12px}.danger{border:1px solid #8b454c;border-radius:9px;background:#512c38;color:#ffe3e3;padding:9px 12px;cursor:pointer}.admin-tag{color:#80d9c2;font-size:12px}
@media(max-width:800px){.chat-layout{grid-template-columns:1fr}.side-panel{grid-template-columns:repeat(2,minmax(0,1fr))}.notification-card,.admin-link{grid-column:1/-1}}
@media(max-width:650px){body{padding:12px}.auth-panel{display:block;margin:48px auto}.intro{margin-bottom:24px}.intro h1{font-size:27px}.auth-card{padding:19px}.chat-heading{padding:16px}.messages{padding:16px;height:58vh}.composer{padding:12px}.composer-tools{padding-left:12px;gap:8px;flex-wrap:wrap}.side-panel{grid-template-columns:1fr}.online-label{font-size:11px}.stats-grid{gap:8px}.stat-card{padding:13px}.stat-card strong{font-size:22px}.admin-row{align-items:flex-start;flex-direction:column}.admin-actions{align-self:flex-end}}