*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #17121f;--bg-glow-1: rgba(244, 114, 182, .07);--bg-glow-2: rgba(168, 85, 247, .09);--surface: #1e1828;--surface2: #2a2138;--border: #372c49;--accent: #e879b9;--accent-2: #b07ef7;--grad-warm: linear-gradient(135deg, #f0abfc 0%, #e879b9 50%, #fb923c 120%);--grad-user: linear-gradient(135deg, #9333ea 0%, #c2419c 100%);--grad-avatar: linear-gradient(140deg, #c084fc 0%, #e879b9 60%, #fbbf24 130%);--text: #f3edf7;--text-soft: #cfc3dd;--text-muted: #79688f;--radius: 20px;--shadow-soft: 0 4px 24px rgba(0, 0, 0, .25);--glow-pink: 0 0 18px rgba(232, 121, 185, .35)}body{background:radial-gradient(ellipse 60% 40% at 20% 0%,var(--bg-glow-2),transparent 70%),radial-gradient(ellipse 50% 35% at 85% 100%,var(--bg-glow-1),transparent 70%),var(--bg);color:var(--text);font-family:PingFang SC,Hiragino Sans GB,Microsoft 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breathe{0%,to{transform:scale(1);opacity:.7}50%{transform:scale(1.15);opacity:1}}.auth-tabs{display:flex;background:var(--surface2);border-radius:14px;padding:4px;width:100%;max-width:320px;border:1px solid var(--border)}.auth-tab{flex:1;padding:10px;border:none;background:none;color:var(--text-muted);border-radius:11px;font-size:14px;font-weight:500;cursor:pointer;transition:all .25s}.auth-tab.active{background:var(--grad-user);color:#fff;box-shadow:var(--glow-pink)}.auth-form{width:100%;max-width:320px;display:flex;flex-direction:column;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field label{font-size:13px;color:var(--text-soft)}.field input{background:var(--surface2);border:1px solid var(--border);border-radius:14px;padding:13px 16px;color:var(--text);font-size:15px;outline:none;transition:border-color .25s,box-shadow .25s}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #e879b926}.field input::placeholder{color:var(--text-muted)}.auth-error{font-size:13px;color:#fb7185;text-align:center}.auth-submit{width:100%;padding:14px;background:var(--grad-user);border:none;border-radius:14px;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:all .25s;margin-top:4px;box-shadow:var(--glow-pink)}.auth-submit:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.auth-submit:not(:disabled):hover{transform:translateY(-1px);filter:brightness(1.08)}.chat-panel{display:flex;flex-direction:column;height:100%;background:#1e1828d9;border-left:1px solid var(--border);border-right:1px solid var(--border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:13px 18px;border-bottom:1px solid 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