:root{--bg:#0b0d10;--panel:#111419;--panel2:#171b21;--line:#262c34;--text:#f1f3f5;--muted:#8d98a5;--accent:#c7ff5c;--accent2:#8bcc17;--danger:#ff716a;--shadow:0 30px 80px #0008;font-family:Inter,"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;color-scheme:dark}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}button,input,select,textarea{font:inherit}.hidden{display:none!important}.ambient{position:fixed;border-radius:50%;filter:blur(120px);opacity:.1;pointer-events:none}.ambient-a{width:440px;height:440px;background:#a6ff00;left:-150px;top:-170px}.ambient-b{width:520px;height:520px;background:#25735e;right:-240px;bottom:-250px}.auth-shell{position:relative;min-height:100vh;display:grid;grid-template-columns:minmax(360px,1.05fr) minmax(420px,.95fr);max-width:1280px;margin:auto;padding:40px}.brand-panel{display:flex;flex-direction:column;justify-content:center;padding:7vw}.brand-mark{display:grid;place-items:center;width:66px;height:66px;border:1px solid #bffd4e66;border-radius:22px;color:var(--accent);font-size:27px;font-weight:600;background:#bffd4e0c;box-shadow:inset 0 0 30px #bffd4e08}.brand-panel h1{font-size:clamp(38px,4.3vw,66px);line-height:1.12;letter-spacing:-.055em;margin:22px 0}.eyebrow{font-size:11px;letter-spacing:.18em;font-weight:600;color:var(--accent);margin:18px 0 8px}.brand-copy{max-width:490px;color:var(--muted);line-height:1.85;font-size:15px}.privacy-note{display:flex;align-items:center;gap:14px;margin-top:48px;color:var(--muted)}.privacy-note>span{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);color:var(--accent)}.privacy-note div,.compact-brand div,.identity div{display:flex;flex-direction:column}.privacy-note strong{color:#ccd1d6;font-size:13px}.privacy-note small,.compact-brand small,.identity small{font-size:11px;color:var(--muted);margin-top:3px}.auth-card{align-self:center;justify-self:center;width:min(100%,480px);min-height:590px;padding:54px;background:#12151aee;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);backdrop-filter:blur(20px);display:flex;align-items:center}.panel-form{display:flex;flex-direction:column;gap:21px;width:100%}.panel-form h2{font-size:30px;letter-spacing:-.03em;margin:4px 0}.muted{color:var(--muted);font-size:13px;line-height:1.6;margin:0}.panel-form label{display:flex;flex-direction:column;gap:8px;font-size:12px;color:#c7cdd4}.panel-form input,.panel-form select{height:50px;border:1px solid var(--line);border-radius:12px;background:#0d1014;padding:0 15px;outline:none;transition:.2s}.panel-form input:focus,.panel-form select:focus,.composer textarea:focus{border-color:#bfff5c99;box-shadow:0 0 0 3px #bfff5c0c}.primary{height:51px;border:0;border-radius:12px;background:var(--accent);color:#13170c;font-weight:600;cursor:pointer;display:flex;justify-content:center;align-items:center;gap:14px}.primary:hover{background:#d3ff7d}.primary:disabled{opacity:.45;cursor:wait}.text-button,.back-button{border:0;background:none;color:#bbc3cb;cursor:pointer}.text-button:hover,.back-button:hover{color:var(--accent)}.back-button{text-align:left;padding:0;margin-bottom:15px}.no-signup{text-align:center;color:#626b75;font-size:11px}.form-error{min-height:16px;margin:-7px 0;color:var(--danger);font-size:12px}.panel-form fieldset{border:0;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}.panel-form legend{font-size:12px;color:#c7cdd4;margin-bottom:8px}.choice{position:relative}.choice input{position:absolute;opacity:0}.choice span{border:1px solid var(--line);border-radius:12px;padding:13px;display:flex;flex-direction:column;gap:4px;background:#0d1014;cursor:pointer}.choice small{color:var(--muted);font-size:10px}.choice input:checked+span{border-color:#bfff5c88;background:#bfff5c08}.code-box{width:100%;padding:18px;border:1px dashed #bfff5c77;border-radius:12px;background:#bfff5c09;color:var(--accent);font-size:20px;letter-spacing:.08em;cursor:pointer}.center{text-align:center}.chat-shell{display:grid;grid-template-columns:250px minmax(0,1fr);height:100vh}.sidebar{border-right:1px solid var(--line);background:#0e1115;display:flex;flex-direction:column;padding:26px 18px}.compact-brand{display:flex;align-items:center;gap:12px;padding:0 9px 34px}.brand-mark.small{width:40px;height:40px;border-radius:13px;font-size:16px}.compact-brand strong{font-size:14px}.sidebar nav{display:flex;flex-direction:column;gap:6px}.nav-item{display:flex;gap:11px;align-items:center;width:100%;border:0;border-radius:11px;padding:12px 13px;background:none;color:#7f8995;text-align:left;cursor:pointer;font-size:13px}.nav-item:hover{background:#ffffff06;color:#ccd3da}.nav-item.active{background:#bfff5c0d;color:var(--accent)}.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding:18px 4px 0;display:flex;align-items:center;justify-content:space-between}.identity{display:flex;gap:10px;align-items:center}.identity>span{display:grid;place-items:center;width:35px;height:35px;border-radius:11px;background:#222a24;color:var(--accent);font-size:12px}.identity strong{font-size:12px}.icon-button{border:0;background:none;color:var(--muted);font-size:17px;cursor:pointer}.conversation,.admin-panel{height:100vh;display:flex;flex-direction:column;background:radial-gradient(circle at 50% 0,#15201b88,transparent 38%)}.conversation header,.admin-panel header{height:88px;flex:0 0 88px;border-bottom:1px solid var(--line);padding:0 34px;display:flex;justify-content:space-between;align-items:center;background:#0c0f12cc;backdrop-filter:blur(14px)}.conversation header h2,.admin-panel header h2{font-size:18px;margin:0}.conversation header .eyebrow,.admin-panel header .eyebrow{margin:0 0 4px;font-size:9px}.online{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px}.online i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}.messages{flex:1;overflow-y:auto;padding:34px max(34px,calc((100% - 900px)/2));scrollbar-color:#303740 transparent}.empty-state{height:100%;display:grid;place-items:center;text-align:center;color:var(--muted)}.empty-state span{font-size:40px;color:#bfff5c44}.message{display:grid;grid-template-columns:38px 1fr auto;gap:12px;margin-bottom:26px;animation:arrive .25s ease}.message-avatar{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#263529,#172019);display:grid;place-items:center;color:var(--accent);font-size:11px}.message-head{display:flex;align-items:baseline;gap:9px;margin-bottom:6px}.message-head strong{font-size:12px}.message-head time{font-size:10px;color:#5f6872}.message p{margin:0;color:#d9dde1;line-height:1.65;font-size:14px;white-space:pre-wrap;word-break:break-word}.delete-message{opacity:0;border:0;background:none;color:#68727d;cursor:pointer}.message:hover .delete-message{opacity:1}.delete-message:hover{color:var(--danger)}@keyframes arrive{from{opacity:0;transform:translateY(5px)}}.composer{margin:0 max(34px,calc((100% - 900px)/2)) 30px;min-height:62px;border:1px solid var(--line);border-radius:17px;background:#12161b;display:flex;align-items:flex-end;padding:10px 10px 10px 18px;box-shadow:0 16px 40px #0005}.composer textarea{flex:1;resize:none;max-height:130px;border:0;background:none;outline:none;padding:10px 0;color:var(--text);line-height:1.5}.counter{font-size:9px;color:#505963;margin:0 12px 10px}.composer button{border:0;background:var(--accent);color:#13170c;border-radius:11px;width:40px;height:40px;font-size:19px;cursor:pointer}.admin-panel{padding-bottom:30px;overflow-y:auto}.admin-panel header{height:auto;min-height:112px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:26px 34px}.stats div{border:1px solid var(--line);border-radius:16px;padding:20px;background:#11151a}.stats span{font-size:27px;display:block}.stats small{color:var(--muted)}.table-wrap{margin:0 34px;border:1px solid var(--line);border-radius:16px;overflow:auto;background:#11151a}table{width:100%;border-collapse:collapse;font-size:12px}th,td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line)}th{color:#66717d;font-size:10px;text-transform:uppercase;letter-spacing:.08em}td{color:#c9cfd5}.pill{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;background:#bfff5c12;color:var(--accent);font-size:10px}.pill.off{background:#ff716a12;color:var(--danger)}.table-action{border:1px solid var(--line);border-radius:7px;background:none;color:#aab2ba;padding:6px 9px;cursor:pointer;margin-right:5px}.table-action:hover{border-color:#65717d;color:white}.toast{position:fixed;left:50%;bottom:25px;transform:translate(-50%,20px);background:#edf1f4;color:#111;padding:11px 18px;border-radius:10px;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:50}.toast.show{opacity:1;transform:translate(-50%,0)}dialog{width:min(430px,calc(100% - 30px));border:1px solid var(--line);border-radius:20px;background:#15191e;color:var(--text);padding:0;box-shadow:var(--shadow)}dialog::backdrop{background:#050607cc;backdrop-filter:blur(5px)}dialog form{padding:30px;display:flex;flex-direction:column;gap:18px}dialog h3{margin:0;font-size:23px}dialog p{color:var(--muted);line-height:1.6;font-size:13px}
@media(max-width:800px){.auth-shell{display:block;padding:18px}.brand-panel{padding:28px 10px}.brand-panel h1{font-size:37px}.brand-copy,.privacy-note{display:none}.auth-card{min-height:0;padding:30px 22px}.chat-shell{grid-template-columns:1fr;padding-bottom:66px}.sidebar{position:fixed;z-index:20;bottom:0;left:0;right:0;height:66px;border-right:0;border-top:1px solid var(--line);padding:8px 14px;flex-direction:row}.compact-brand{display:none}.sidebar nav{flex-direction:row;flex:1}.nav-item{justify-content:center}.sidebar-bottom{margin:0;border:0;padding:0}.identity{display:none}.conversation,.admin-panel{height:calc(100vh - 66px)}.conversation header,.admin-panel header{padding:0 18px}.messages{padding:22px 17px}.composer{margin:0 12px 14px}.stats{margin:18px;gap:8px}.stats div{padding:14px}.stats span{font-size:21px}.table-wrap{margin:0 18px}th,td{padding:12px}.panel-form fieldset{grid-template-columns:1fr}}