:root{--bg:#f3f6fa;--panel:#fff;--ink:#182334;--muted:#718096;--line:#e2e8f0;--primary:#2856d6;--primary-soft:#e9efff;--shadow:0 12px 38px #14233c12;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink)}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,textarea{font:inherit}.app-shell{height:100dvh;display:grid;grid-template-columns:minmax(280px,340px) 1fr minmax(240px,300px);overflow:hidden}.conversation-list,.details-panel,.chat-panel{background:var(--panel)}.conversation-list{border-right:1px solid var(--line);display:flex;flex-direction:column}.app-header,.chat-header,.details-heading{height:76px;padding:16px 18px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line)}.app-header small,.chat-title small{display:block;color:var(--muted);font-size:.78rem;margin-top:2px}.brand-mark{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,#2856d6,#18a999);color:#fff;font-weight:800;flex:none}.icon-button,.back-button{border:0;background:transparent;color:var(--muted);cursor:pointer;font-size:1.35rem;margin-left:auto}.search{padding:14px}.search input{width:100%;border:1px solid var(--line);background:var(--bg);border-radius:11px;padding:11px 13px;outline:none}.search input:focus{border-color:var(--primary)}.filters{display:flex;gap:8px;padding:0 14px 14px;overflow:auto}.filter{border:0;border-radius:999px;padding:8px 11px;color:var(--muted);background:transparent;white-space:nowrap;cursor:pointer}.filter.active{background:var(--primary-soft);color:var(--primary);font-weight:700}.filter span{font-size:.75rem}.conversation-items{overflow:auto;flex:1}.empty-list,.details-empty{padding:30px 20px;text-align:center;color:var(--muted);line-height:1.55}.chat-panel{display:flex;flex-direction:column;min-width:0;background:linear-gradient(180deg,#f8faff,#f1f5fa)}.chat-header{background:var(--panel)}.back-button{display:none;margin:0}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-weight:800}.chat-title{min-width:0}.chat-title strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-area{flex:1;overflow:auto;display:grid;place-items:center;padding:24px}.welcome-card{max-width:420px;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow)}.welcome-card .brand-mark{width:54px;height:54px}.welcome-card h1{font-size:1.35rem;margin:16px 0 8px}.welcome-card p{color:var(--muted);line-height:1.55;margin:0}.composer{display:flex;gap:10px;padding:14px max(14px,env(safe-area-inset-right)) max(14px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));background:var(--panel);border-top:1px solid var(--line)}.composer textarea{resize:none;flex:1;border:1px solid var(--line);border-radius:12px;padding:11px 13px;min-height:44px}.composer button{border:0;border-radius:11px;cursor:pointer}.attach{width:44px;background:var(--bg);color:var(--primary);font-size:1.4rem}.send{padding:0 17px;background:var(--primary);color:#fff;font-weight:700}.send:disabled,.composer textarea:disabled{opacity:.55;cursor:not-allowed}.details-panel{border-left:1px solid var(--line)}.details-heading .icon-button{margin-left:auto}.logout-form{position:fixed;right:18px;top:19px}.logout-form button{border:0;background:transparent;color:var(--muted);cursor:pointer}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:900px){.app-shell{grid-template-columns:minmax(270px,340px) 1fr}.details-panel{display:none}}@media(max-width:640px){.app-shell{display:block;position:relative}.conversation-list{height:100dvh;border:0}.chat-panel{display:none;position:absolute;inset:0;height:100dvh}.app-shell.chat-open .conversation-list{display:none}.app-shell.chat-open .chat-panel{display:flex}.back-button{display:block}.logout-form{top:18px;right:48px}.app-header{padding-top:max(16px,env(safe-area-inset-top))}}
.auth-page{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:24px 18px;background:radial-gradient(circle at top left,#dbeafe,transparent 40%),var(--bg)}.auth-shell{width:min(100%,440px)}.auth-brand{display:flex;align-items:center;gap:12px;margin:0 0 18px}.auth-brand strong,.auth-brand small{display:block}.auth-brand small{color:var(--muted);margin-top:2px}.auth-card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow)}.auth-card h1{font-size:1.65rem;margin:0 0 8px}.auth-card .muted{color:var(--muted);margin:0 0 24px;line-height:1.55}.auth-card label{display:block;font-weight:650;margin:17px 0 7px}.auth-card input{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:11px;background:var(--panel);color:var(--ink);outline:none}.auth-card input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2856d629}.auth-card button{display:block;width:100%;margin-top:22px;border:0;border-radius:11px;padding:13px 16px;background:var(--primary);color:#fff;font-weight:750;cursor:pointer}.error{color:#b42318;font-size:.9rem}
.auth-card details{margin-top:12px;border:1px solid var(--line);border-radius:10px;padding:9px 11px}.auth-card summary{cursor:pointer;color:var(--primary);font-weight:650}.auth-card .secret{display:block;margin:16px 0;padding:12px;border-radius:10px;background:var(--bg);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-weight:700;letter-spacing:.08em;text-align:center;overflow-wrap:anywhere;word-break:break-word}.auth-card .uri{display:block;max-width:100%;margin-top:10px;padding:10px;background:var(--bg);border-radius:8px;font:12px/1.45 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}.auth-actions{display:grid;gap:10px;margin-top:8px}.auth-actions .button-link{display:block;width:100%;box-sizing:border-box;margin-top:0;border:0;border-radius:11px;padding:13px 16px;background:var(--primary);color:#fff;font-weight:750;text-align:center;text-decoration:none}.auth-actions form{margin:0}.auth-card .secondary-button,.auth-skip .secondary-button{display:block;width:100%;margin-top:12px;border:1px solid var(--line);border-radius:11px;padding:12px 16px;background:transparent;color:var(--ink);font-weight:650;cursor:pointer}.auth-card .secondary-button:hover,.auth-skip .secondary-button:hover{background:var(--bg)}.auth-back{margin:16px 0 0;text-align:center}.auth-back a{color:var(--primary);font-weight:650;text-decoration:none}.auth-skip{margin:0}