:root{--bg:#f5f6fa;--panel:#fff;--text:#20212a;--muted:#8b8d9a;--line:#ececf2;--accent:#6c5ce7;--accent2:#8e7df2;--bubble:#f0eefc;--shadow:0 20px 60px rgba(38,35,72,.12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,"Segoe UI","PingFang SC",sans-serif;color:var(--text);background:var(--bg)}button,input,textarea{font:inherit}.hidden{display:none!important}.logo{width:64px;height:64px;border-radius:20px;display:grid;place-items:center;background:linear-gradient(145deg,var(--accent),#9d8cff);color:#fff;font-weight:800;font-size:32px;box-shadow:0 12px 28px #6c5ce755}.logo.small{width:42px;height:42px;border-radius:14px;font-size:21px}.auth-shell{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr}.brand-panel{position:relative;overflow:hidden;padding:12vw 10vw;background:#201a43;color:#fff}.brand-panel h1{font-size:58px;margin:28px 0 8px}.brand-panel p{font-size:20px;color:#c9c3ef}.orb{position:absolute;border-radius:50%;filter:blur(1px);opacity:.28}.orb-a{width:440px;height:440px;background:#816eff;right:-160px;bottom:-100px}.orb-b{width:230px;height:230px;background:#41e6b8;right:25%;top:-80px}.auth-card{align-self:center;width:min(420px,84%);margin:auto}.tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:34px}.tab{flex:1;border:0;background:transparent;padding:16px;color:var(--muted);cursor:pointer}.tab.active{color:var(--accent);border-bottom:2px solid var(--accent);font-weight:700}.auth-form h2{font-size:32px;margin:0 0 6px}.auth-form>p{color:var(--muted);margin:0 0 28px}label{display:grid;gap:8px;font-weight:600;margin:18px 0}input,textarea{border:1px solid var(--line);border-radius:12px;padding:13px 15px;outline:none;background:var(--panel);color:var(--text)}input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #6c5ce722}.primary{border:0;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;padding:14px 20px;font-weight:700;cursor:pointer;width:100%;box-shadow:0 10px 22px #6c5ce733}.error{color:#d63031;margin-top:14px;min-height:22px}.app-shell{height:100vh;display:grid;grid-template-columns:76px 340px 1fr;background:var(--panel);overflow:hidden}.rail{background:#211b46;padding:20px 0;display:flex;align-items:center;flex-direction:column;gap:18px}.rail-btn{width:44px;height:44px;border:0;border-radius:13px;background:transparent;color:#9c96bd;font-size:22px;cursor:pointer}.rail-btn.active,.rail-btn:hover{background:#ffffff18;color:#fff}.rail-spacer{flex:1}.avatar-mini,.avatar{border:0;border-radius:50%;color:#fff;display:grid;place-items:center;font-weight:700}.avatar-mini{width:38px;height:38px;cursor:pointer}.sidebar{border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}.sidebar header{padding:28px 24px 16px;display:flex;justify-content:space-between;align-items:center}.sidebar header small{color:var(--accent);font-weight:800;letter-spacing:2px}.sidebar h1{margin:5px 0;font-size:28px}.icon-btn{width:38px;height:38px;border:0;border-radius:11px;background:var(--bubble);color:var(--accent);font-size:24px;cursor:pointer}.search{margin:0 20px 16px;background:var(--bg);border-radius:12px;padding:0 12px;display:flex;align-items:center;color:var(--muted)}.search input{border:0;background:transparent;width:100%;box-shadow:none}.conversation-list{overflow:auto;flex:1}.conversation{width:100%;display:flex;align-items:center;gap:12px;padding:14px 20px;border:0;background:transparent;text-align:left;cursor:pointer;color:var(--text)}.conversation:hover,.conversation.active{background:var(--bubble)}.avatar{width:46px;height:46px;flex:0 0 auto}.avatar.tiny{width:30px;height:30px;font-size:11px}.conv-copy{display:grid;gap:5px;min-width:0;flex:1}.conv-copy strong,.conv-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-copy small{color:var(--muted)}.conv-meta{display:grid;justify-items:end;gap:7px;color:var(--muted);font-size:11px}.conv-meta b{background:var(--accent);color:#fff;border-radius:20px;min-width:19px;height:19px;display:grid;place-items:center}.list-empty{text-align:center;color:var(--muted);padding:50px 20px;line-height:1.8}.chat{min-width:0;background:linear-gradient(135deg,#fafaff,#f7f8fc)}.empty-state{height:100%;display:grid;place-content:center;text-align:center;color:var(--muted)}.empty-state h2{color:var(--text);margin:18px 0 4px}.empty-icon{font-size:46px;color:var(--accent)}.chat-panel{height:100%;display:grid;grid-template-rows:auto 1fr auto auto}.chat-header{height:84px;padding:15px 26px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:13px}.chat-header h2{font-size:17px;margin:0 0 4px}.chat-header p{font-size:12px;margin:0;color:#00a878}.header-actions{margin-left:auto;display:flex;gap:8px}.header-actions button,.back-btn{border:0;background:transparent;color:var(--muted);font-size:21px;padding:10px;cursor:pointer}.back-btn{display:none}.messages{overflow:auto;padding:30px clamp(20px,5vw,70px);scroll-behavior:smooth}.message-row{display:flex;align-items:flex-start;gap:10px;margin:15px 0;max-width:72%}.message-row.own{margin-left:auto;justify-content:flex-end}.sender{font-size:11px;color:var(--muted);margin:0 0 4px 8px}.bubble{background:var(--panel);border:1px solid var(--line);border-radius:4px 18px 18px 18px;padding:11px 14px;line-height:1.55;box-shadow:0 3px 12px #2c255208;overflow-wrap:anywhere}.own .bubble{background:linear-gradient(135deg,var(--accent),#7e6deb);color:#fff;border:0;border-radius:18px 4px 18px 18px}.message-row time{display:block;font-size:10px;color:var(--muted);margin:5px 8px}.own time{text-align:right}.attachment{margin-top:8px;padding:9px;border-radius:9px;display:flex;gap:9px;align-items:center;background:#ffffff20;color:inherit;text-decoration:none}.attachment small{display:block;opacity:.7}.composer{margin:0 26px 22px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:8px 10px;display:flex;align-items:flex-end;gap:8px;box-shadow:var(--shadow)}.composer textarea{resize:none;border:0;box-shadow:none;flex:1;max-height:100px;padding:10px}.attach,.emoji,.send{width:40px;height:40px;display:grid;place-items:center;border:0;border-radius:11px;margin:0;cursor:pointer;font-size:22px}.attach,.emoji{background:transparent;color:var(--muted)}.send{background:var(--accent);color:#fff}.file-preview{margin:0 28px 8px;background:var(--bubble);border-radius:10px;padding:9px 14px;display:flex;justify-content:space-between}.file-preview button{border:0;background:transparent}dialog{border:0;border-radius:20px;padding:0;box-shadow:var(--shadow);background:var(--panel);color:var(--text);width:min(480px,92vw)}dialog::backdrop{background:#17142b99}.dialog-card{padding:24px}.dialog-card header{display:flex;justify-content:space-between;align-items:center}.dialog-card header h2{margin:0}.dialog-card header button{border:0;background:transparent;font-size:26px;color:var(--muted)}.dialog-tabs{display:flex;background:var(--bg);border-radius:10px;padding:4px;margin:20px 0}.dialog-tabs button{flex:1;border:0;background:transparent;padding:10px;border-radius:8px}.dialog-tabs button.active{background:var(--panel);color:var(--accent);font-weight:700}.user-picker{max-height:300px;overflow:auto}.pick-user{display:flex;align-items:center;gap:12px;margin:5px 0;padding:9px;border-radius:10px;cursor:pointer}.pick-user:hover{background:var(--bg)}.pick-user input{width:18px}.pick-user span:last-child{display:grid}.pick-user small{color:var(--muted);font-weight:400}.dark{--bg:#171723;--panel:#21212f;--text:#f3f3f8;--muted:#9898aa;--line:#343445;--bubble:#2e2a4b}.dark .chat{background:#1b1b28}
@media(max-width:900px){.app-shell{grid-template-columns:64px 290px 1fr}}@media(max-width:760px){.app-shell{grid-template-columns:0 1fr}.rail{display:none}.sidebar{grid-column:2}.chat{display:none;grid-column:1}.chat-open .sidebar{display:none}.chat-open .chat{display:block}.back-btn{display:block}.message-row{max-width:88%}.composer{margin:0 10px 10px}.messages{padding:18px 12px}.auth-shell{grid-template-columns:1fr}.brand-panel{display:none}.auth-card{padding:40px 0}}

/* Four-section primary navigation */
.app-shell{grid-template-columns:92px 340px 1fr}.app-shell.non-chat{grid-template-columns:92px 1fr}.non-chat .sidebar{display:none}.non-chat .chat{grid-column:2}.main-nav{width:100%;display:grid;gap:8px;margin-top:12px}.rail-btn{width:68px;height:auto;min-height:55px;display:grid;place-items:center;padding:6px}.rail-btn small{font-size:11px}.rail-btn.utility{width:44px;min-height:44px}.mobile-nav{display:none}.content-page{height:100%;overflow:auto;padding:clamp(28px,5vw,70px);background:var(--bg)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}.page-header small{color:var(--accent);letter-spacing:2px;font-weight:800}.page-header h1{font-size:34px;margin:7px 0}.page-header p{color:var(--muted);margin:0}.page-action{border:0;border-radius:12px;padding:12px 18px;background:var(--accent);color:#fff;font-weight:700;cursor:pointer}.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}.contact-card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:18px;display:flex;align-items:center;gap:13px;text-align:left;color:var(--text);cursor:pointer}.contact-card:hover{border-color:var(--accent);transform:translateY(-2px)}.contact-card>span:nth-child(2){display:grid;gap:4px;min-width:0}.contact-card small{color:var(--muted);overflow:hidden;text-overflow:ellipsis}.contact-card i{margin-left:auto;color:var(--accent);font-style:normal;font-size:12px}.page-empty{color:var(--muted);padding:50px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{min-height:230px;padding:28px;border-radius:22px;color:#fff;position:relative;overflow:hidden}.feature-card>span{font-size:34px}.feature-card h2{margin:40px 0 7px}.feature-card p{opacity:.8}.feature-card button{border:1px solid #ffffff55;background:#ffffff22;color:#fff;padding:8px 12px;border-radius:9px}.feature-card.violet{background:linear-gradient(145deg,#6c5ce7,#9b59b6)}.feature-card.green{background:linear-gradient(145deg,#00b894,#00cec9)}.feature-card.orange{background:linear-gradient(145deg,#e17055,#fdcb6e)}.profile-card,.settings-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:26px;max-width:720px}.profile-card{display:flex;align-items:center;gap:20px;margin-bottom:18px}.profile-avatar{width:82px;height:82px;border-radius:28px;display:grid;place-items:center;color:#fff;font-size:26px;font-weight:800}.profile-card h2{margin:0 0 5px}.profile-card p{color:var(--muted)}.online-chip{font-size:12px;color:#00a878;background:#00b89418;padding:5px 9px;border-radius:20px}.settings-card{padding:6px 18px}.settings-card button{width:100%;display:flex;align-items:center;gap:16px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);padding:18px 6px;text-align:left;cursor:pointer}.settings-card button:last-child{border-bottom:0}.settings-card button>span{font-size:22px;color:var(--accent)}.settings-card button div{display:grid;gap:4px;flex:1}.settings-card small{color:var(--muted)}.settings-card i{font-style:normal;color:var(--muted);font-size:22px}
@media(max-width:900px) and (min-width:761px){.app-shell{grid-template-columns:78px 290px 1fr}.app-shell.non-chat{grid-template-columns:78px 1fr}.feature-grid{grid-template-columns:1fr}}
@media(max-width:760px){.app-shell,.app-shell.non-chat{height:100dvh;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr);padding-bottom:64px}.sidebar,.chat,.non-chat .chat{grid-column:1;grid-row:1}.non-chat .chat{display:block}.mobile-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:20;bottom:0;left:0;right:0;height:64px;background:var(--panel);border-top:1px solid var(--line)}.mobile-nav button{border:0;background:transparent;color:var(--muted);display:grid;place-items:center;padding:7px}.mobile-nav button span{font-size:20px}.mobile-nav button small{font-size:11px}.mobile-nav button.active{color:var(--accent)}.content-page{padding:24px 16px}.page-header{align-items:flex-start}.page-action{padding:10px}.contact-grid{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr}}

/* Profile and account settings */
.profile-card .outline-btn{margin-left:auto;border:1px solid var(--accent);background:transparent;color:var(--accent);border-radius:11px;padding:9px 14px;cursor:pointer}.settings-title{max-width:720px;margin:26px 4px 10px;font-size:13px;color:var(--muted);font-weight:600}.setting-row{width:100%;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding:18px 6px;margin:0;cursor:pointer}.setting-row:last-child{border-bottom:0}.setting-row>span{font-size:22px;color:var(--accent);width:25px;text-align:center}.setting-row div{display:grid;gap:4px;flex:1}.setting-row small{color:var(--muted);font-weight:400}.switch-input{position:absolute;opacity:0;pointer-events:none}.switch{width:44px;height:24px;border-radius:20px;background:#cbcbd5;position:relative;transition:.2s}.switch:after{content:"";position:absolute;width:18px;height:18px;border-radius:50%;background:#fff;left:3px;top:3px;box-shadow:0 1px 4px #0003;transition:.2s}.switch-input:checked+.switch{background:var(--accent)}.switch-input:checked+.switch:after{transform:translateX(20px)}.danger-row strong{color:#d63031}.color-picker{display:flex;gap:12px;margin:8px 0 24px}.color-dot{width:38px;height:38px;border-radius:50%;margin:0;display:grid;place-items:center;color:#fff;cursor:pointer}.color-dot input{display:none}.color-dot span{opacity:0}.color-dot input:checked+span{opacity:1}.info-dialog #infoBody{color:var(--muted);line-height:1.75;padding:20px 0 28px}.info-dialog .primary{margin-top:4px}
@media(max-width:760px){.profile-card{align-items:flex-start;flex-wrap:wrap}.profile-card .outline-btn{margin-left:0;width:100%}.profile-avatar{width:64px;height:64px;border-radius:20px}.settings-card{padding:4px 12px}.setting-row{gap:11px}.setting-row>span{font-size:19px}}

/* WeChat-inspired profile layout */
:root{--accent:#07c160;--accent2:#10b85a;--bubble:#e9f8ee}.rail{background:#2f3032}.content-page{background:#ededed}.wechat-profile{width:min(720px,100%);margin:0 auto;padding-bottom:34px}.wechat-title{padding:4px 0 24px}.wechat-title h1{font-size:30px;margin:0;font-weight:700}.wechat-user-card{width:100%;border:0;background:var(--panel);border-radius:4px;display:flex;align-items:center;gap:18px;padding:28px 24px;text-align:left;color:var(--text);cursor:pointer}.wechat-user-card:hover{background:#fafafa}.profile-avatar{width:72px;height:72px;border-radius:8px}.wechat-user-copy{display:grid;gap:8px;flex:1;min-width:0}.wechat-user-copy strong{font-size:22px}.wechat-user-copy small{font-size:14px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.wechat-user-copy em{width:max-content;color:#07c160;background:#e8f8ef;border-radius:14px;padding:4px 9px;font-size:11px;font-style:normal}.wechat-card-icons{color:#a3a3aa;white-space:nowrap}.wechat-profile .settings-title{margin:25px 4px 8px;color:#888;font-size:13px}.wechat-profile .settings-card{max-width:none;border:0;border-radius:4px;padding:0 18px}.wechat-profile .settings-card button,.wechat-profile .setting-row{min-height:64px;padding:12px 2px}.wechat-profile .settings-card button>span,.wechat-profile .setting-row>span{width:34px;flex:0 0 34px}.wechat-profile .settings-card strong,.wechat-profile .setting-row strong{font-size:16px;font-weight:500}.wechat-profile .settings-card small,.wechat-profile .setting-row small{font-size:12px}.setting-icon{height:34px;border-radius:7px;display:grid!important;place-items:center;color:#fff!important;font-size:17px!important}.setting-icon.blue{background:#4b8df8}.setting-icon.purple{background:#8c62e8}.setting-icon.green{background:#07c160}.setting-icon.orange{background:#f5a623}.setting-icon.cyan{background:#22b7c9}.wechat-profile .switch{background:#c5c6ca}.wechat-profile .switch-input:checked+.switch{background:#07c160}.wechat-logout{width:100%;margin-top:26px;border:0;border-radius:4px;padding:16px;background:var(--panel);color:#e64340;font-weight:500;cursor:pointer}.wechat-logout:hover{background:#fafafa}.dark .content-page{background:#111}.dark .wechat-user-card:hover,.dark .wechat-logout:hover{background:#292937}
@media(max-width:760px){.content-page{padding:0 16px 24px}.wechat-title{padding:28px 0 20px}.wechat-title h1{font-size:28px}.wechat-user-card{padding:24px 18px}.profile-avatar{width:64px;height:64px;border-radius:7px}.wechat-user-copy strong{font-size:20px}.wechat-profile .settings-card{padding:0 14px;border-radius:5px}.wechat-profile .settings-card button,.wechat-profile .setting-row{min-height:62px}.wechat-profile .settings-title{margin-top:22px}.mobile-nav{height:62px}.app-shell,.app-shell.non-chat{padding-bottom:62px}}

/* Mobile full-page scrolling and bottom safe area */
@media(max-width:760px){html,body{width:100%;height:100%;overflow:hidden;background:#ededed}.app-shell,.app-shell.non-chat{position:fixed;inset:0;width:100%;height:100dvh;min-height:0;padding:0;border-radius:0;overflow:hidden}.non-chat .chat{height:calc(100dvh - 62px - env(safe-area-inset-bottom));min-height:0;overflow:hidden}.content-page{height:100%;min-height:0;overflow-x:hidden;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;padding:0 16px calc(96px + env(safe-area-inset-bottom));scroll-padding-bottom:calc(96px + env(safe-area-inset-bottom))}.wechat-profile{min-height:min-content;padding-bottom:20px}.wechat-title{padding:20px 0 14px}.wechat-title h1{font-size:27px}.wechat-user-card{padding:18px 16px}.profile-avatar{width:60px;height:60px}.wechat-user-copy{gap:6px}.wechat-user-copy strong{font-size:19px}.wechat-user-copy small{font-size:12px}.wechat-profile .settings-title{margin:16px 4px 7px}.wechat-profile .settings-card button,.wechat-profile .setting-row{min-height:56px;padding:9px 2px}.wechat-profile .settings-card strong,.wechat-profile .setting-row strong{font-size:15px}.wechat-profile .setting-row>span,.wechat-profile .settings-card button>span{width:32px;flex-basis:32px}.setting-icon{height:32px}.wechat-logout{margin-top:18px;padding:14px}.mobile-nav{height:calc(62px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -1px 8px rgba(0,0,0,.04)}}
@media(max-width:760px){.sidebar,.chat-open .chat{height:calc(100dvh - 62px - env(safe-area-inset-bottom));min-height:0;overflow:hidden}}

/* WeChat-inspired contacts */
.wechat-contacts{width:min(720px,100%);margin:0 auto;position:relative;padding-bottom:30px}.contacts-head{display:flex;align-items:center;justify-content:space-between;padding:2px 0 22px}.contacts-head h1{font-size:30px;margin:0}.contacts-head button{width:38px;height:38px;border:0;border-radius:6px;background:transparent;color:var(--text);font-size:28px;cursor:pointer}.contacts-search{height:42px;background:var(--panel);border-radius:5px;display:flex;align-items:center;gap:8px;padding:0 13px;color:#999;margin-bottom:16px}.contacts-search input{width:100%;border:0;padding:8px 0;background:transparent;box-shadow:none}.contact-shortcuts,.alphabet-list section{background:var(--panel)}.wechat-entry,.wechat-contact{width:100%;border:0;background:transparent;color:var(--text);display:flex;align-items:center;text-align:left;cursor:pointer}.wechat-entry{min-height:62px;padding:8px 18px;gap:14px}.wechat-entry:not(:last-child),.wechat-contact:not(:last-child){border-bottom:1px solid var(--line)}.wechat-entry strong{font-size:16px;font-weight:500;flex:1}.wechat-entry i{font-style:normal;color:#aaa;font-size:20px}.shortcut-icon{width:38px;height:38px;border-radius:6px;color:#fff;display:grid;place-items:center;font-size:19px}.shortcut-icon.orange{background:#f6a623}.shortcut-icon.green{background:#07c160}.shortcut-icon.blue{background:#4b8df8}.contacts-count{padding:22px 4px 8px;color:#888;font-size:13px}.alphabet-list section{margin-bottom:0}.alphabet-list section h3{height:30px;margin:0;padding:7px 4px;background:#ededed;color:#888;font-size:12px;font-weight:500}.wechat-contact{min-height:62px;padding:8px 18px;gap:13px}.contact-avatar{width:42px;height:42px;border-radius:5px;color:#fff;display:grid;place-items:center;font-weight:700;flex:0 0 42px}.wechat-contact>span:last-child{min-width:0;display:grid;gap:3px}.wechat-contact strong{font-size:16px;font-weight:500}.wechat-contact small{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.letter-index{position:fixed;right:13px;top:50%;transform:translateY(-38%);z-index:5;display:grid;gap:2px;text-align:center}.letter-index a{color:#555;text-decoration:none;font-size:10px;line-height:15px;min-width:15px}.dark .alphabet-list section h3{background:#111}.dark .contacts-search{background:var(--panel)}
@media(max-width:760px){.wechat-contacts{width:100%;padding-bottom:60px}.contacts-head{padding:20px 0 14px}.contacts-head h1{font-size:27px}.contacts-head button{font-size:26px}.contacts-search{margin-bottom:12px}.contact-shortcuts,.alphabet-list section{margin-left:-16px;margin-right:-16px}.wechat-entry,.wechat-contact{padding-left:16px;padding-right:28px}.contacts-count{padding-top:17px}.alphabet-list section h3{padding-left:16px}.letter-index{right:2px;top:48%;}.wechat-contact small{max-width:220px}}

/* WeChat-style plus popover */
.contact-add-wrap{position:relative}.contacts-head .contact-add-wrap>button{display:grid;place-items:center;line-height:1;border-radius:50%}.contacts-head .contact-add-wrap>button:hover,.contacts-head .contact-add-wrap>button[aria-expanded="true"]{background:#dcdcdc}.wechat-plus-menu{position:absolute;right:0;top:50px;width:168px;z-index:30;background:#4c4c4c;border-radius:5px;padding:3px 0;box-shadow:0 8px 24px rgba(0,0,0,.24)}.wechat-plus-menu:before{content:"";position:absolute;right:13px;top:-7px;border-left:7px solid transparent;border-right:7px solid transparent;border-bottom:8px solid #4c4c4c}.wechat-plus-menu button{width:100%;height:52px;border:0;border-bottom:1px solid #626262;background:transparent;color:#fff;display:flex;align-items:center;gap:14px;padding:0 17px;font-size:15px;text-align:left;cursor:pointer}.wechat-plus-menu button:last-child{border-bottom:0}.wechat-plus-menu button:hover{background:#5a5a5a}.wechat-plus-menu button span{width:24px;text-align:center;font-size:20px;color:#fff}.dark .contacts-head .contact-add-wrap>button:hover,.dark .contacts-head .contact-add-wrap>button[aria-expanded="true"]{background:#333}
@media(max-width:760px){.wechat-plus-menu{position:fixed;right:10px;top:62px;width:170px}.wechat-plus-menu:before{right:10px}.wechat-plus-menu button{height:50px}}

/* Personal QR friend card */
.qr-dialog{padding:24px 26px 26px}.qr-user{display:flex;align-items:center;gap:12px;margin:22px 0 16px}.qr-user .contact-avatar{width:46px;height:46px;flex-basis:46px}.qr-user>div{display:grid;gap:4px}.qr-user strong{font-size:17px}.qr-user small{color:var(--muted)}.qr-image-wrap{width:284px;height:284px;max-width:100%;margin:0 auto;display:grid;place-items:center;background:#fff;border-radius:8px;overflow:hidden}.qr-image-wrap img{display:block;width:100%;height:100%;object-fit:contain}.qr-image-wrap #qrLoading{color:#999;font-size:13px}.qr-dialog>p{text-align:center;color:var(--muted);font-size:12px;margin:14px 0 0}
@media(max-width:760px){#qrDialog{width:calc(100vw - 32px);max-width:360px}.qr-dialog{padding:22px 20px 24px}.qr-image-wrap{width:min(270px,calc(100vw - 76px));height:min(270px,calc(100vw - 76px))}}

/* Avatar image upload */
.avatar-upload{display:grid;grid-template-columns:74px 1fr;grid-template-rows:auto auto;column-gap:16px;align-items:center;margin:22px 0}.avatar-upload .profile-avatar{grid-row:1/3;width:74px;height:74px;border-radius:8px}.upload-avatar-btn{display:block;width:max-content;margin:0;border:1px solid #07c160;color:#07c160;border-radius:6px;padding:8px 14px;font-size:14px;cursor:pointer}.avatar-upload small{color:var(--muted);font-size:11px;margin-top:6px}.avatar,.avatar-mini,.profile-avatar,.contact-avatar{background-repeat:no-repeat!important;background-size:cover;background-position:center}
@media(max-width:760px){.avatar-upload{grid-template-columns:66px 1fr}.avatar-upload .profile-avatar{width:66px;height:66px}}

/* Conversation four-action plus menu */
.conversation-add-wrap{position:relative}.conversation-add-wrap .icon-btn[aria-expanded="true"]{background:#d8f2e1;color:#07c160}.conversation-plus-menu{top:50px;right:0;width:172px}.conversation-plus-menu button{height:50px}.conversation-plus-menu button span{font-family:"Segoe UI Symbol","PingFang SC",sans-serif}
@media(max-width:760px){.conversation-plus-menu{position:fixed;top:72px;right:12px;width:172px}.conversation-plus-menu:before{right:12px}.sidebar header{position:relative;z-index:12}}

/* Simplified WeChat-style profile */
.wechat-profile .settings-title{display:none}.wechat-user-copy em{display:none}.wechat-card-icons{font-size:0}.wechat-card-icons:after{content:"›";font-size:22px;color:#999}.wechat-user-card{padding:22px 20px;gap:16px}.wechat-user-copy{gap:6px}.wechat-user-copy strong{font-size:20px}.wechat-user-copy small{font-size:13px}.wechat-profile .settings-card{margin-top:14px;padding:0 16px}.wechat-profile .settings-card small,.wechat-profile .setting-row small{display:none}.wechat-profile .settings-card button,.wechat-profile .setting-row{min-height:56px;padding:10px 0;gap:13px}.wechat-profile .settings-card button div,.wechat-profile .setting-row div{display:flex;align-items:center}.wechat-profile .settings-card strong,.wechat-profile .setting-row strong{font-size:16px;font-weight:400}.wechat-profile .settings-card button>span,.wechat-profile .setting-row>span{width:32px;flex-basis:32px}.setting-icon{width:32px!important;height:32px;border-radius:6px;font-size:16px!important}.wechat-profile .settings-card i{font-size:19px}.wechat-profile .switch{width:42px;height:24px}.wechat-profile .switch-input:checked+.switch:after{transform:translateX(18px)}.wechat-logout{margin-top:14px;padding:14px;font-size:16px}.wechat-title{padding-bottom:18px}
@media(max-width:760px){.wechat-title{padding:18px 0 13px}.wechat-title h1{font-size:26px}.wechat-user-card{padding:18px 16px}.profile-avatar{width:58px;height:58px}.wechat-user-copy strong{font-size:19px}.wechat-profile .settings-card{margin-top:12px;padding:0 14px}.wechat-profile .settings-card button,.wechat-profile .setting-row{min-height:54px}.wechat-logout{margin-top:12px}.wechat-profile{padding-bottom:14px}}

/* Private friend search and add */
.friend-search-box{display:flex;gap:8px;margin:22px 0 14px}.friend-search-box input{flex:1;min-width:0}.friend-search-box button{border:0;border-radius:8px;background:#07c160;color:#fff;padding:0 17px;font-weight:600;cursor:pointer}.friend-results{max-height:350px;overflow:auto;border-top:1px solid var(--line)}.friend-results>p{text-align:center;color:var(--muted);padding:32px 10px}.friend-result{display:flex;align-items:center;gap:12px;padding:12px 2px;border-bottom:1px solid var(--line)}.friend-result>div{display:grid;gap:4px;min-width:0;flex:1}.friend-result small{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.friend-result button{border:0;border-radius:6px;background:#e8f8ef;color:#07c160;padding:7px 12px;cursor:pointer}.friend-result button:disabled{color:#999;background:#eee}.friend-result .contact-avatar{width:42px;height:42px;flex-basis:42px}
@media(max-width:760px){#addFriendDialog{width:calc(100vw - 28px)}.friend-search-box button{padding:0 14px}.friend-results{max-height:50vh}}

/* Compact chat and a flexible composer for narrow screens. */
.chat-panel{min-height:0;grid-template-rows:auto minmax(0,1fr) auto auto}
.chat-header>div:nth-child(3){min-width:0}
.chat-header h2{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.messages{min-height:0}
.message-row{margin:12px 0;max-width:82%}
.message-row>div{min-width:0}
.sender:empty{display:none}
.bubble{border-radius:4px 12px 12px 12px;box-shadow:none}
.own .bubble{background:#95ec69;color:#172516;border:1px solid #88db61;border-radius:12px 4px 12px 12px}
.message-row time{font-size:11px;margin-top:4px}
.composer{align-items:center;gap:6px;padding:7px 8px;border-radius:12px;box-shadow:0 2px 12px #20212a08}
.composer textarea{min-width:0;width:0;flex:1 1 0;min-height:44px;height:44px;max-height:120px;padding:10px 8px;line-height:24px;font-size:16px;overflow-y:hidden}
.composer textarea::placeholder{color:var(--muted)}
.composer .attach,.composer .emoji{flex:0 0 40px;width:40px;height:44px}
.composer .send{flex:0 0 56px;width:56px;height:40px;border-radius:8px;font-size:14px;font-weight:600}
.composer button:focus-visible,.composer .attach:focus-within{outline:2px solid var(--accent);outline-offset:2px}
.attachment div{min-width:0}
.dark .own .bubble{background:#286b3b;color:#f3f3f8;border-color:#347e49}
@media(max-width:760px){
.chat-header{height:68px;padding:10px 12px;gap:10px}
.chat-header .avatar{width:40px;height:40px}
.header-actions{gap:0}
.header-actions button,.back-btn{padding:8px}
.messages{padding:14px 12px}
.message-row{max-width:88%;gap:8px}
.bubble{padding:9px 12px;font-size:15px}
.composer{margin:0 8px 8px;gap:2px;padding:6px}
.composer .attach,.composer .emoji{flex-basis:36px;width:36px}
}

/* Conversation details */
#chatInfoDialog{width:min(540px,100vw);height:min(760px,90dvh);max-height:100dvh;background:var(--bg);border-radius:12px;overflow:auto}
.chat-info-head{position:sticky;top:0;z-index:1;display:grid;grid-template-columns:44px 1fr 44px;align-items:center;min-height:58px;background:var(--bg);border-bottom:1px solid var(--line);padding:4px 10px}
.chat-info-head h2{font-size:17px;text-align:center;margin:0;font-weight:600}
.chat-info-head button{border:0;background:none;color:var(--text);font-size:30px;height:44px;cursor:pointer}
.chat-info-body{padding-bottom:24px}
.chat-info-members{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px 10px;background:var(--panel);padding:24px 18px}
.chat-info-member{display:flex;flex-direction:column;align-items:center;gap:7px;min-width:0}
.chat-info-member .avatar,.chat-info-add>span{width:48px;height:48px;border-radius:8px}
.chat-info-member small{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:12px;font-weight:400}
.chat-info-add{border:0;background:none;padding:0;cursor:pointer}
.chat-info-add>span{display:grid;place-items:center;border:1px dashed var(--muted);color:var(--muted);font-size:30px}
.chat-info-group{margin-top:12px;background:var(--panel);padding:0 18px}
.chat-info-group>button,.chat-info-group>label{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:56px;border:0;border-bottom:1px solid var(--line);background:none;margin:0;padding:12px 0;color:var(--text);font-size:16px;font-weight:400;gap:12px}
.chat-info-group>button{cursor:pointer;text-align:left}
.chat-info-group>button span{color:var(--muted)}
.chat-info-group>:last-child{border-bottom:0}
.chat-info-group input[role=switch]{position:absolute;opacity:0;width:1px;height:1px}
.chat-info-group label i{margin-left:auto;width:44px;height:26px;flex-shrink:0;border-radius:20px;background:#c9cbd0;position:relative}
.chat-info-group label i:after{content:'';position:absolute;left:3px;top:3px;background:#fff;width:20px;height:20px;border-radius:50%;transition:transform .15s}
.chat-info-group input:checked+i{background:#07c160}
.chat-info-group input:checked+i:after{transform:translateX(18px)}
.chat-info-group input:focus-visible+i{outline:2px solid var(--accent);outline-offset:3px}
.chat-info-group select{font:inherit;max-width:50%;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:6px}
.chat-info-hint{font-size:12px;line-height:1.6;color:var(--muted);padding:0 18px}
#chatSettingsError{padding:0 18px}
.history-input{display:flex;gap:8px;padding:12px 0}
.history-input input{min-width:0;flex:1;font-size:16px}
.history-input button{background:#07c160;border:0;border-radius:8px;color:#fff;padding:0 12px}
#historyResults{font-size:14px;overflow-wrap:anywhere;padding-bottom:12px}
#historyResults article{border-top:1px solid var(--line);padding:12px 0}
#historyResults small{color:var(--muted);font-size:12px}
#historyResults p{white-space:pre-wrap;line-height:1.6;margin:6px 0}
.chat-panel[data-background=gray] .messages{background:#ededed}
.chat-panel[data-background=green] .messages{background:#eaf3e6}
.dark .chat-panel[data-background=gray] .messages{background:#252529}
.dark .chat-panel[data-background=green] .messages{background:#1e3026}
@media(max-width:760px){#chatInfoDialog{width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;margin:0;border-radius:0}.chat-info-body{padding-bottom:calc(24px + env(safe-area-inset-bottom))}}

/* Message actions */
.composer-wrap{min-width:0}
.message-action-strip{display:flex;align-items:center;gap:8px;margin:0 12px 8px;padding:10px 12px;border-radius:8px;background:var(--panel);border:1px solid var(--line);font-size:13px}
.message-action-strip>span{flex:1;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.message-action-strip button{flex-shrink:0;border:0;background:transparent;color:var(--accent);padding:8px 4px;font:inherit;cursor:pointer}
.message-action-strip button:disabled{opacity:.4}
.message-row{position:relative}
.message-more{flex:0 0 28px;width:28px;height:28px;border:0;border-radius:6px;background:var(--panel);color:var(--muted);cursor:pointer;font-size:18px;opacity:.6}
.message-more:focus-visible{outline:2px solid var(--accent)}
.message-row.selected .bubble{outline:2px solid var(--accent)}
.selection-dot{flex:0 0 20px;width:20px;height:20px;border:1px solid var(--accent);border-radius:50%;color:var(--accent);font-size:14px;text-align:center}
.message-recalled{text-align:center;color:var(--muted);font-size:12px;padding:12px}
.quoted-message{font-size:12px;padding:6px 8px;margin-bottom:8px;border-left:3px solid var(--muted);background:#80808012;color:var(--muted);max-height:72px;overflow:hidden}
.pinned-messages{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:13px;margin-bottom:14px;overflow-wrap:anywhere}
.pinned-messages summary{cursor:pointer;color:var(--accent)}
.pinned-messages p{white-space:pre-wrap;line-height:1.6;border-top:1px solid var(--line);padding-top:8px}
#messageMenu{width:min(330px,calc(100vw - 32px));max-height:80dvh;overflow:auto;padding:12px;border-radius:14px}
#messageMenu header{display:flex;align-items:center;justify-content:space-between;padding:4px 10px}
#messageMenu h3{font-size:15px;margin:8px 0}
#messageMenu header button{border:0;background:none;color:var(--muted);font-size:26px;cursor:pointer}
.message-menu-item,.forward-targets button{display:block;width:100%;border:0;background:transparent;text-align:left;font:inherit;padding:13px 12px;border-radius:8px;color:var(--text);cursor:pointer}
.message-menu-item:hover,.forward-targets button:hover{background:var(--bg)}
#messageMenu input,#messageMenu textarea{width:100%;min-width:0;font-size:16px}
#messageMenu textarea{min-height:150px;user-select:text}
.forward-targets{max-height:50dvh;overflow:auto}
@media(pointer:coarse){.message-row .bubble{-webkit-touch-callout:none;user-select:none}.message-more{font-size:17px;width:24px;flex-basis:24px}.message-action-strip{gap:4px;margin:0 8px 6px;padding:6px 8px}.message-row{max-width:96%}}

.message-menu-item{display:flex;align-items:center;gap:14px}.message-menu-item svg{width:23px;height:23px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

#voiceDialog{width:min(390px,calc(100vw - 32px));padding:34px 24px;text-align:center;background:var(--panel);color:var(--text);border-radius:22px}
#voiceDialog::backdrop{background:#142b25bb}
.voice-avatar{width:80px;height:80px;border-radius:24px;background:#e2f5ec;color:#07a85a;font-size:42px;display:grid;place-items:center;margin:0 auto 20px}
#voiceDialog h2{font-size:23px;margin:12px 0;overflow-wrap:anywhere}
#voiceStatus{font-size:14px;color:var(--muted);line-height:1.8;min-height:50px}
.voice-buttons{display:flex;justify-content:center;gap:16px;margin-top:24px}
.voice-buttons button{min-width:80px;min-height:48px;border:0;border-radius:24px;padding:12px 18px;cursor:pointer;font-size:15px}
#voiceAccept{background:#07c160;color:#fff}#voiceEnd{background:#e75151;color:#fff}#voiceMute,#voiceDone{background:var(--bg);color:var(--text)}
#voicePlay{border:0;background:var(--bg);color:var(--accent);border-radius:8px;padding:12px;margin-top:18px;cursor:pointer}
#voiceCallBtn{color:var(--accent)}

.composer-extras{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;padding:14px 20px 20px;background:var(--bg);border-top:1px solid var(--line)}
.composer-extras>button{display:flex;align-items:center;flex-direction:column;gap:9px;border:0;background:transparent;color:var(--text);padding:4px;cursor:pointer;min-width:0}
.composer-extras>button>span{display:grid;place-items:center;width:56px;height:56px;background:var(--panel);border:1px solid var(--line);border-radius:14px}
.composer-extras svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.composer-extras small{font-size:12px;white-space:nowrap;color:var(--muted)}
.composer-extras>button:disabled{opacity:.4;cursor:default}
.composer-extras>button:focus-visible{outline:2px solid var(--accent);border-radius:10px}
#composerPlus[aria-expanded=true]{color:var(--accent);background:var(--bubble)}
.file-preview{min-width:0;gap:12px}.file-preview>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-preview>button{flex-shrink:0}
@media(max-width:760px){.composer-extras{padding:10px 12px 16px;gap:6px}.composer-extras>button>span{width:52px;height:52px}}

.voice-buttons{flex-wrap:wrap;gap:10px}#voiceOutput{background:var(--bg);color:var(--text)}#voiceOutputPanel{margin-top:20px;padding:14px;background:var(--bg);border-radius:12px;text-align:left}#voiceOutputPanel label{display:block;margin:0 0 8px;font-size:13px}#voiceOutputSelect{width:100%;min-width:0;font-size:16px;padding:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:8px}#voiceOutputChoose{border:0;background:var(--panel);color:var(--accent);padding:10px;border-radius:8px;margin-top:10px;cursor:pointer}#voiceOutputNote{font-size:12px;color:var(--muted);line-height:1.7;margin:10px 0 0}

/* Compact composer controls and WeChat-style emoji grid. */
.composer #composerPlus,.composer .emoji{width:36px;height:36px;flex:0 0 36px;border:0;border-radius:9px;padding:5px;box-shadow:none;-webkit-tap-highlight-color:transparent}
.composer #composerPlus svg{display:block;width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.composer #composerPlus:focus{outline:none;box-shadow:none}
.composer #composerPlus:focus-visible,.composer .emoji:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.composer #composerPlus[aria-expanded=true],.composer .emoji[aria-expanded=true]{background:var(--bubble);color:var(--accent)}
.composer{align-items:center;gap:5px}
.composer textarea{padding:10px 6px}
.emoji-panel{background:var(--bg);border-top:1px solid var(--line);padding:8px 12px 10px}
.emoji-tabs{display:flex;gap:6px;margin-bottom:6px}
.emoji-tabs button{border:0;border-radius:7px;padding:7px 14px;background:transparent;color:var(--muted);font-size:13px;cursor:pointer}
.emoji-tabs button.active{background:var(--panel);color:var(--accent);font-weight:600}
.emoji-grid{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:2px;max-height:min(28dvh,220px);overflow:auto;overscroll-behavior:contain}
.emoji-grid button{border:0;background:transparent;min-width:0;min-height:40px;padding:4px 0;font-size:27px;line-height:1.2;font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif;cursor:pointer;border-radius:6px}
.emoji-grid button:hover{background:var(--panel)}
.emoji-panel button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.emoji-footer{display:flex;align-items:center;gap:10px;padding-top:8px}
.emoji-footer span{flex:1;font-size:11px;color:var(--muted)}
.emoji-footer button{border:0;border-radius:7px;background:var(--panel);color:var(--text);padding:7px 12px;cursor:pointer;font-size:13px}
@media(max-width:360px){.emoji-grid{grid-template-columns:repeat(7,minmax(0,1fr))}.emoji-panel{padding-left:8px;padding-right:8px}}

/* Attachment previews and message cards */
.image-message{display:block;padding:0;margin:0;border:0;background:transparent;color:inherit;cursor:zoom-in;max-width:100%;border-radius:8px;overflow:hidden}
.image-message img{display:block;max-width:min(240px,48vw);max-height:300px;width:auto;height:auto;object-fit:contain;border-radius:8px}
.image-error{display:block;padding:16px;font-size:13px;max-width:200px}
.file-card{width:230px;max-width:100%;margin-top:0;padding:10px;gap:10px;background:var(--panel);color:var(--text);border:1px solid var(--line)}
.file-kind{width:42px;height:48px;flex:0 0 42px;display:grid;place-items:center;background:#eaf2fc;color:#3478bf;border-radius:7px;font-size:11px;font-weight:700}
.file-copy{display:grid;gap:6px;min-width:0}
.file-copy strong{font-size:14px;font-weight:500;overflow-wrap:anywhere;line-height:1.5}
.file-copy small{font-size:11px;color:var(--muted)}
.file-preview{align-items:center}
.pending-image{width:48px;height:48px;flex:0 0 48px;object-fit:cover;border-radius:6px}
.pending-file-icon{font-size:25px;flex:0 0 32px}
.pending-copy{flex:1;display:grid;gap:4px;min-width:0}
.pending-copy strong{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pending-copy small{font-size:11px;color:var(--muted)}
#imageViewer{width:min(900px,96vw);max-height:92dvh;padding:14px;background:var(--panel);color:var(--text)}
#imageViewer header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
#imageViewer header button{border:0;background:transparent;color:var(--text);font-size:26px;cursor:pointer}
#imageViewer>img{display:block;margin:auto;max-width:100%;max-height:68dvh;object-fit:contain}
#imageViewer p{font-size:13px;color:var(--muted)}
#imageViewer>a{display:block;text-align:center;color:var(--accent);padding:12px}
@media(max-width:760px){.file-preview{margin:0 8px 8px;padding:8px 10px}.file-card{width:190px}}