@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap";:root{font-family:Plus Jakarta Sans,system-ui,-apple-system,sans-serif;--bg-main: #0B0F19;--bg-card: rgba(21, 28, 44, .75);--bg-sidebar: #111827;--bg-chat: #0B0F19;--primary: #6366F1;--primary-hover: #4F46E5;--primary-glow: rgba(99, 102, 241, .35);--accent-cyan: #06B6D4;--bubble-mine: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);--bubble-other: rgba(255, 255, 255, .06);--text-main: #F3F4F6;--text-muted: #9CA3AF;--border: rgba(255, 255, 255, .08);--danger: #EF4444}*{box-sizing:border-box}body{margin:0;min-width:320px;height:100vh;background:var(--bg-main);color:var(--text-main);overflow:hidden}button,input{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.app-shell{height:100dvh;max-width:1600px;margin:auto;display:flex;background:var(--bg-main);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.sidebar{width:380px;min-width:320px;display:flex;flex-direction:column;background:var(--bg-sidebar);border-right:1px solid var(--border)}.sidebar-head,.conversation-head{height:76px;display:flex;align-items:center;padding:0 24px;gap:14px;border-bottom:1px solid var(--border);background:#111827cc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.brand-small{display:flex;align-items:center;gap:12px;color:var(--primary);font-size:20px;font-weight:800;letter-spacing:-.5px}.brand-small b{color:var(--text-main)}.brand-mark{width:56px;height:56px;margin:0 auto 12px;background:linear-gradient(135deg,var(--primary),var(--accent-cyan));color:#fff;border-radius:18px;display:grid;place-items:center;box-shadow:0 8px 25px var(--primary-glow)}.icon-btn{border:0;background:transparent;color:var(--text-muted);display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;transition:all .2s ease}.icon-btn:hover{background:#ffffff14;color:#fff;transform:translateY(-1px)}.search-box{margin:16px;background:#ffffff0a;border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;gap:10px;padding:0 14px;color:var(--text-muted);transition:all .2s ease}.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow);background:#ffffff12}.search-box input{border:0;outline:0;background:transparent;height:44px;width:100%}.section-label{font-size:11px;letter-spacing:1.5px;color:var(--text-muted);font-weight:700;padding:18px 24px 8px}.chat-list{flex:1;overflow-y:auto}.person-row,.chat-row{border:0;background:transparent;width:100%;display:flex;align-items:center;text-align:left;gap:14px;padding:14px 20px;color:inherit;transition:background .2s ease}.person-row:hover,.chat-row:hover{background:#ffffff0a}.chat-row.selected{background:#6366f11f;border-left:3px solid var(--primary)}.chat-meta{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1}.chat-meta b{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-meta small{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.avatar-wrap{position:relative;flex-shrink:0;width:46px;height:46px}.avatar{width:46px;height:46px;border-radius:16px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);display:grid;place-items:center;color:#fff;font-size:15px;font-weight:700}.online-dot{position:absolute;right:-2px;bottom:-2px;width:13px;height:13px;border:2px solid var(--bg-sidebar);background:#10b981;border-radius:50%}.profile-footer{display:flex;align-items:center;gap:12px;padding:16px 20px;border-top:1px solid var(--border);background:#11182799}.profile-footer span{flex:1;min-width:0;display:flex;flex-direction:column}.profile-footer b{font-size:14px}.profile-footer small{font-size:11px;color:var(--text-muted)}.conversation{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg-chat);position:relative}.head-user{display:flex;flex-direction:column;gap:2px;flex:1}.head-user b{font-size:15px;font-weight:700}.head-user small{font-size:12px;color:var(--accent-cyan)}.back-btn{display:none}.messages{flex:1;overflow-y:auto;padding:24px clamp(16px,4vw,60px);background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:24px 24px}.first-message{width:max-content;max-width:90%;margin:16px auto 28px;background:#ffffff0d;border:1px solid var(--border);color:var(--text-muted);padding:10px 20px;border-radius:30px;font-size:13px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.message-line{display:flex;margin:10px 0;justify-content:flex-start}.message-line.mine{justify-content:flex-end}.bubble{max-width:min(80%,580px);padding:12px 16px 8px;background:var(--bubble-other);border:1px solid var(--border);border-radius:18px 18px 18px 4px;font-size:14.5px;line-height:1.5;box-shadow:0 4px 15px #00000026;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.mine .bubble{background:var(--bubble-mine);border:0;border-radius:18px 18px 4px;box-shadow:0 6px 20px var(--primary-glow)}.message-time{display:flex;align-items:center;justify-content:flex-end;gap:6px;font-size:10.5px;opacity:.75;margin-top:4px}.sender-name{font-size:12px;font-weight:700;color:var(--accent-cyan);margin-bottom:4px}.composer{display:flex;align-items:center;gap:12px;padding:16px 24px;background:#111827d9;border-top:1px solid var(--border);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px)}.composer input{flex:1;min-width:0;border:1px solid var(--border);outline:0;background:#ffffff0a;border-radius:16px;padding:14px 18px;font-size:14px;transition:all .2s}.composer input:focus{border-color:var(--primary);background:#ffffff14}.send-btn{border:0;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--primary-hover));color:#fff;width:48px;height:48px;display:grid;place-items:center;box-shadow:0 6px 20px var(--primary-glow);transition:all .2s ease}.send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 8px 25px var(--primary-glow)}.auth-wrap{min-height:100dvh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at top left,#1e1b4b,#0b0f19)}.auth-card{width:min(100%,420px);background:var(--bg-card);border:1px solid var(--border);padding:40px;border-radius:28px;box-shadow:0 20px 60px #0006;-webkit-backdrop-filter:blur(25px);backdrop-filter:blur(25px);text-align:center}.auth-card h1{font-size:28px;font-weight:800;margin:10px 0 6px;letter-spacing:-.5px}.auth-card .muted{color:var(--text-muted);font-size:13.5px;margin-bottom:20px}.auth-tabs{display:flex;background:#ffffff0d;padding:5px;border-radius:14px;margin-bottom:20px}.auth-tabs button{border:0;flex:1;padding:10px;border-radius:10px;background:transparent;color:var(--text-muted);font-weight:600;transition:all .2s}.auth-tabs button.active{background:var(--primary);color:#fff;box-shadow:0 4px 15px var(--primary-glow)}.auth-card form{text-align:left}.auth-card label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin:14px 0}.auth-card label input{display:block;width:100%;border:1px solid var(--border);background:#ffffff0a;border-radius:12px;padding:12px 16px;margin-top:6px;outline:0;transition:all .2s}.auth-card label input:focus{border-color:var(--primary);background:#ffffff14}.primary.full{width:100%;margin-top:14px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary-hover));border:0;box-shadow:0 6px 20px var(--primary-glow);font-weight:700}.notice,.error{padding:12px 16px;border-radius:12px;font-size:13px;margin:14px 0;text-align:left}.notice{background:#f59e0b26;border:1px solid #F59E0B;color:#fbbf24}.error{background:#ef444426;border:1px solid #EF4444;color:#fca5a5}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#1f2937;border:1px solid var(--border);color:#fff;border-radius:16px;padding:14px 20px;display:flex;align-items:center;gap:16px;z-index:100;box-shadow:0 10px 30px #00000080}@media(max-width:760px){.sidebar{width:100%;border:0}.conversation{display:none;width:100%}.conversation.show-mobile{display:flex}.sidebar.hide-mobile{display:none}.back-btn{display:grid}}