*{box-sizing:border-box}body{height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;background:radial-gradient(circle at 20% 20%,rgba(37,99,235,.15),transparent 25%),radial-gradient(circle at 80% 0%,rgba(14,165,233,.12),transparent 25%),#0b1221;color:#222;-webkit-text-size-adjust:100%;touch-action:manipulation;max-width:100%;overflow:hidden;overscroll-behavior:none}html{height:100%;max-width:100%;overflow:hidden;overscroll-behavior:none}input,textarea,select{font-size:16px}.auth-wrapper{display:flex;justify-content:center;min-height:100vh;max-height:100vh;overflow-y:auto;background:radial-gradient(circle at 20% 20%,rgba(37,99,235,.15),transparent 25%),radial-gradient(circle at 80% 0%,rgba(14,165,233,.12),transparent 25%),linear-gradient(135deg,#0f172a,#0b1221);color:#fff;position:relative;overflow:hidden}.auth-wrapper:before{content:"";position:absolute;top:-20%;right:-20%;bottom:-20%;left:-20%;background:radial-gradient(circle at 25% 35%,rgba(59,130,246,.14),transparent 40%),radial-gradient(circle at 70% 20%,rgba(16,185,129,.12),transparent 38%),radial-gradient(circle at 50% 80%,rgba(236,72,153,.08),transparent 35%),repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px);filter:blur(12px);pointer-events:none}.auth-wrapper:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 15% 10%,rgba(255,255,255,.05),transparent 25%),radial-gradient(circle at 85% 75%,rgba(255,255,255,.03),transparent 22%);pointer-events:none}.hero-list{margin:0;padding-left:18px;color:#fffc;font-size:14px;line-height:1.6}.hero-meta{display:flex;gap:20px;margin-top:8px}.meta-number{font-size:20px;font-weight:700}.meta-label{font-size:12px;color:#ffffffbf}button{padding:10px 12px;border:none;border-radius:8px;cursor:pointer}button.primary{background:#2563eb;color:#fff}button.primary:hover{background:#1d4ed8}.status{color:#2563eb}.error{color:#dc2626;margin-left:8px}.status-bar{display:flex;gap:8px;align-items:center}.conn-dot{width:10px;height:10px;border-radius:50%;display:inline-block}.conn-dot.online{background:#22c55e}.conn-dot.connecting{background:#f59e0b}.conn-dot.offline{background:#ef4444}.conn-text{color:#6b7280;font-size:13px}.status-tip{color:#2563eb;font-size:13px}.chat-subtitle{display:flex;align-items:center;gap:8px;font-size:13px;color:#6b7280}.chat-subtitle .tag-group{color:#2563eb;background:rgba(37,99,235,.1)}.tabs{display:flex;gap:8px}.tabs button{flex:1;background:#e5e7eb;color:#111827}.tabs button.active{background:#2563eb;color:#fff}.app{display:grid;grid-template-columns:320px 1fr;height:100vh;max-width:100vw}.app.mobile{grid-template-columns:1fr;overflow-x:hidden;position:relative;height:100vh}.sidebar,.chat{min-width:0}.app.mobile .sidebar,.app.mobile .chat{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;transition:transform .25s ease,opacity .25s ease}.app.mobile .sidebar.hidden{transform:translate(-110%);opacity:0;pointer-events:none;visibility:hidden}.app.mobile .chat.hidden{transform:translate(110%);opacity:0;pointer-events:none;visibility:hidden}.app.mobile .sidebar:not(.hidden),.app.mobile .chat:not(.hidden){transform:translate(0);opacity:1;visibility:visible}.sidebar{background:#0f172a;color:#e2e8f0;display:flex;flex-direction:column}.sidebar-header{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-actions{display:flex;gap:6px}.sidebar .secondary{background:#334155}.contacts{padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:8px}.contacts-header{display:flex;justify-content:space-between;align-items:center;color:#e2e8f0;font-weight:600}.contacts input,.contacts select{width:100%;padding:8px;border-radius:6px;border:1px solid #334155;background:#0b1221;color:#e2e8f0}.contact-list{display:flex;flex-direction:column;gap:6px;max-height:240px;overflow-y:auto}.contact-row{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:6px 8px;border-radius:8px;cursor:pointer}.contact-row:hover{background:rgba(255,255,255,.06)}.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff}.contact-info{display:flex;flex-direction:column;gap:2px}.contact-name{color:#e2e8f0}.contact-email{color:#e2e8f0b3;font-size:12px}.contact-action{background:rgba(255,255,255,.1);color:#e2e8f0;padding:6px 10px}.contact-action:hover{background:rgba(255,255,255,.2)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:#fff;padding:0;border-radius:18px;width:min(540px,92vw);max-height:82vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 70px #0f172a47;border:1px solid #e5e7eb;margin:auto}.modal .modal-inner{padding:24px 24px 20px}.modal-contact-list{max-height:320px;overflow-y:auto;border:1px solid #e5e7eb;padding:8px;border-radius:12px;display:flex;flex-direction:column;gap:6px;background:#f9fafb}.modal-contact{display:flex;gap:8px;align-items:center}.modal-actions{display:flex;justify-content:flex-end;gap:8px}.conversation-list{overflow-y:auto;flex:1}.conversation{padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.05);cursor:pointer}.conversation:hover{background:rgba(255,255,255,.05)}.conv-title{display:flex;justify-content:space-between;align-items:center;gap:6px;flex-wrap:wrap}.conv-title-main{display:inline-flex;align-items:center;gap:6px}.badge{background:#ef4444;color:#fff;padding:2px 8px;border-radius:999px;font-size:12px}.tag-group{background:rgba(255,255,255,.15);color:#e2e8f0;padding:2px 6px;border-radius:6px;font-size:12px}.conv-preview{display:flex;justify-content:space-between;color:#e2e8f0cc;font-size:12px}.conv-time{color:#e2e8f0b3;margin-left:8px}.conversation.active{background:rgba(255,255,255,.08)}.chat{display:flex;flex-direction:column;height:100vh;background:#0f172a;position:relative}.messages{flex:1;overflow-y:auto;padding:96px 24px 14px;display:flex;flex-direction:column;gap:10px;background:linear-gradient(180deg,#0f172a 0%,#0b1221 100%);overscroll-behavior:contain}.chat-header{position:sticky;top:0;z-index:5}.app.mobile .chat-header{position:fixed!important;top:0;left:0;right:0;border-radius:0 0 12px 12px;box-shadow:0 8px 24px #0f172a1f}.load-more{text-align:center}.load-more button{background:#e5e7eb;color:#111827;padding:6px 12px}.message-row{display:flex;flex-direction:column}.message-row.outgoing{align-items:flex-end}.message-row.incoming{align-items:flex-start}.message{background:#fff;border-radius:14px;padding:10px 12px;box-shadow:0 10px 30px #0f172a14;max-width:72%;border:1px solid rgba(0,0,0,.03)}.bubble-out{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff}.bubble-in{background:#fff;color:#111827}.message-row.outgoing .message{box-shadow:0 12px 28px #2563eb38}.bubble-out .meta{color:#f8fbff}.bubble-out .msg-status{color:#e5edff}.bubble-out .meta .author,.bubble-out .meta span{color:#f8fbff}.bubble-out .attachments a{color:#e0e7ff}.message-meta{font-size:12px;color:#cbd5e1;display:flex;gap:8px;margin-bottom:4px;align-items:center}.message-meta .author{font-weight:600}.message-meta.meta-out{justify-content:flex-end}.message-meta.meta-in{justify-content:flex-start}.msg-status{font-weight:600}.msg-failed{margin-top:6px;color:#dc2626;font-size:13px}.link-btn{background:none;border:none;color:#2563eb;margin-left:6px;cursor:pointer;padding:0}.message .content{margin-top:4px;line-height:1.55}.attachments a{display:inline-block;margin-top:4px;color:#2563eb;font-size:14px}.audio-row{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border-radius:12px;background:rgba(15,23,42,.06);border:1px solid rgba(15,23,42,.08);min-width:180px}.audio-row.out{background:rgba(255,255,255,.08);border-color:#ffffff1f}.audio-play{border:none;background:#2563eb;color:#fff;padding:6px 8px;border-radius:10px;cursor:pointer;font-weight:700;display:inline-flex;align-items:center;justify-content:center}.audio-row.out .audio-play{background:rgba(255,255,255,.22);color:#0f172a}.audio-duration{font-size:12px;color:#94a3b8}.audio-row.out .audio-duration{color:#ffffffd9}.audio-progress{position:relative;flex:1;height:4px;background:rgba(148,163,184,.35);border-radius:999px;overflow:hidden;min-width:80px}.audio-progress-fill{position:absolute;left:0;top:0;bottom:0;background:#2563eb;width:0%;transition:width .1s linear}.audio-row.out .audio-progress{background:rgba(255,255,255,.24)}.audio-row.out .audio-progress-fill{background:rgba(255,255,255,.8)}.reply-block{border-left:3px solid #cbd5e1;padding-left:8px;margin-bottom:6px;font-size:13px}.reply-block .reply-author{font-weight:700;color:#0f172a}.reply-block .reply-snippet{color:#475569}.bubble-out .reply-block{border-color:#fff9}.bubble-out .reply-block .reply-author,.bubble-out .reply-block .reply-snippet{color:#ffffffe6}.receipt-info{margin-top:6px;font-size:12px;color:#6b7280}.receipt-info.align-right{text-align:right}.receipt-info .read{color:#15803d}.receipt-info .unread{color:#475569}.message-row.outgoing .receipt-info{color:#ffffffd1}.message-row.outgoing .receipt-info .read{color:#fffffff2}.message-row.outgoing .receipt-info .unread{color:#fff9}.message-actions{margin-top:6px}.message-actions.align-right{text-align:right}.reply-btn{display:inline-flex;align-items:center;gap:4px;color:#2563eb}.message-row.outgoing .reply-btn{color:#ffffffe6}.reply-preview{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:8px 10px;width:100%}.reply-preview-top{display:flex;align-items:center;gap:8px;font-size:13px}.reply-preview .reply-label{color:#2563eb;font-weight:700}.reply-preview .reply-author{color:#0f172a;font-weight:700}.reply-preview-snippet{font-size:13px;color:#475569;margin-top:4px}.attachment-item img{max-width:200px;border-radius:8px;display:block;margin-top:6px;cursor:pointer}.attachment-item .audio-row{display:flex;align-items:center;gap:6px}.file-icon,.file-name{margin-right:4px}.file-size{color:#6b7280;font-size:12px}.composer{display:flex;flex-direction:column;gap:8px;padding:12px 16px;border-top:1px solid #1f2937;background:#0f172a;box-shadow:0 -6px 20px #00000040}.composer input{flex:1;padding:12px;border-radius:12px;border:1px solid #dbe1ea;background:#f8fafc}.record-tip{padding:0 16px 10px;font-size:12px;color:#6b7280}.record-tip .record-error{color:#dc2626;margin-left:8px}button:disabled{opacity:.5;cursor:not-allowed}.upload-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:6px;border:1px solid #e5e7eb;background:#f8fafc;cursor:pointer;user-select:none;-webkit-user-select:none}.message .attachments img{max-width:200px;border-radius:8px;display:block;margin-top:6px}.image-preview{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:999}.image-preview-inner{max-width:90%;max-height:90%}.image-preview img{max-width:100%;max-height:100%;border-radius:8px;box-shadow:0 10px 40px #00000059}.app-footer{position:fixed;left:12px;bottom:10px;font-size:12px;color:#fff9;padding:4px 8px;border-radius:8px;background:rgba(15,23,42,.55);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:none}.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:6;border-top:1px solid rgba(255,255,255,.08);padding:6px 0;box-sizing:border-box;background:#0f172a;height:86px!important}.bottom-nav .MuiBottomNavigationAction-root{min-width:0;padding-top:12px;padding-bottom:12px}@media (max-width: 768px){.auth-wrapper{grid-template-columns:1fr;background:#0f172a;padding:24px 16px 32px;justify-content:flex-start;align-items:flex-start}.hero-pane{display:block;margin-top:-100px}.hero-extra{display:none!important}.auth-card{width:90%;max-width:360px;margin:32px auto 24px;padding:24px 20px 16px}.app{grid-template-columns:1fr;height:auto;min-height:100vh}.chat{height:100vh;height:100dvh}.sidebar{min-height:40vh}.chat{min-height:60vh}.composer{position:sticky;bottom:0}.messages{min-height:300px}.upload-btn{width:42px;height:42px}.conv-title span{max-width:70%;display:inline-block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
