#app{width:100%;max-width:100%;height:100vh;height:100dvh;overflow-x:hidden;overflow-x:clip}*{margin:0;padding:0;box-sizing:border-box}:root{--app-bg: #f5f7fb;--app-surface: #ffffff;--app-primary: #4f7cff;--app-text: #0f1115;--app-text-secondary: #666666;--app-text-muted: #999999;--app-border: rgba(15, 17, 21, .06);--app-search-bg: #e9ecf4;--app-danger: #e53935}html,body{width:100%;max-width:100%;overflow-x:hidden;overflow-x:clip;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--app-bg)}html[data-theme=dark]{--app-bg: #1a1a1a;--app-surface: #363636;--app-text: #e0e0e0;--app-text-secondary: #b0b0b0;--app-text-muted: #888888;--app-border: rgba(255, 255, 255, .08);--app-search-bg: #404040;color-scheme:dark}html[data-theme=dark],html[data-theme=dark] body{background:#1a1a1a}#app{width:100%;max-width:100%;height:100vh;height:100dvh;overflow-x:hidden;background:var(--app-bg)}@media (max-width: 768px){:root{--app-bg: #f5f7fb;--app-surface: #ffffff;--app-surface-muted: #f5f5f5;--app-primary: #4f7cff;--app-text: #0f1115;--app-text-secondary: #666666;--app-text-muted: #999999;--app-border: rgba(15, 17, 21, .06);--app-search-bg: #e9ecf4;--app-danger: #e53935}html[data-theme=dark]{--app-bg: #1a1a1a;--app-surface: #363636;--app-surface-muted: #2d2d2d;--app-text: #e0e0e0;--app-text-secondary: #b0b0b0;--app-text-muted: #888888;--app-border: rgba(255, 255, 255, .08);--app-search-bg: #404040}html,body,#app{overflow-x:clip;max-width:100%;background:var(--app-bg)}body,#app,.user-layout,.mobile-view,.mobile-tab-shell,.mobile-tab-body,.mobile-channel-tab,.sidebar-room-list,.group-view,.favorites-view,.room-item-wrapper,.room-item,.room-name,.room-preview,.message-item-wrapper{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}input,textarea,select,[contenteditable=true],.search-input,.tag-input,.room-detail 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768px){.admin-layout.is-mobile{--admin-mobile-bg: var(--app-bg, #f5f7fb);--admin-mobile-surface: var(--app-surface, #ffffff);--admin-mobile-primary: var(--app-primary, #2196f3);--admin-mobile-text: var(--app-text, #0f1115);--admin-mobile-text-secondary: var(--app-text-secondary, #666666);--admin-mobile-border: var(--app-border, rgba(15, 17, 21, .06));background:var(--admin-mobile-bg)}.admin-layout.is-mobile .admin-main{margin-left:0;width:100%;min-width:0}.admin-layout.is-mobile .admin-header{display:none}.admin-layout.is-mobile .admin-content{min-height:calc(100vh - 52px - env(safe-area-inset-top));background:var(--admin-mobile-bg)}.admin-layout.is-mobile .admin-content-fill{height:calc(100vh - 52px - env(safe-area-inset-top))}.admin-layout.is-mobile .page-header,.admin-layout.is-mobile .dash-header,.admin-layout.is-mobile .admin-dashboard .section-head-wrap{flex-direction:column;align-items:stretch;gap:12px;padding:16px}.admin-layout.is-mobile .page-header h1,.admin-layout.is-mobile 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h1{margin:0;font-size:20px;font-weight:600;color:var(--admin-mobile-text)}.admin-mobile-page-sub{margin:4px 0 0;font-size:13px;color:var(--admin-mobile-text-secondary)}.admin-mobile-toolbar{display:flex;flex-direction:column;gap:10px;padding:12px 16px;background:var(--admin-mobile-surface, #fff);border-bottom:1px solid var(--admin-mobile-border)}.admin-mobile-toolbar-row{display:flex;gap:8px;flex-wrap:wrap}.admin-mobile-search{flex:1;min-width:0;padding:10px 12px;border:1px solid #e0e0e0;border-radius:8px;font-size:16px;background:#fff}.admin-mobile-btn{padding:10px 14px;border:none;border-radius:8px;font-size:14px;cursor:pointer;white-space:nowrap}.admin-mobile-btn-primary{background:var(--admin-mobile-primary, #2196f3);color:#fff}.admin-mobile-btn-secondary{background:#f0f0f0;color:#333}.admin-mobile-btn-danger{background:#ffebee;color:#c62828}.admin-mobile-list{padding:12px 16px;display:flex;flex-direction:column;gap:10px}.admin-mobile-card{background:var(--admin-mobile-surface, 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var(--admin-mobile-border)}.admin-mobile-step{flex:1;text-align:center;padding:8px 4px;border-radius:8px;font-size:13px;color:#999;background:#f5f5f5}.admin-mobile-step.active{background:#e3f2fd;color:#1565c0;font-weight:600}.admin-mobile-step.done{background:#e8f5e9;color:#2e7d32}.admin-sheet-fade-enter-active,.admin-sheet-fade-leave-active{transition:opacity .2s ease}.admin-sheet-fade-enter-from,.admin-sheet-fade-leave-to{opacity:0}.admin-sheet-slide-enter-active,.admin-sheet-slide-leave-active{transition:transform .25s ease}.admin-sheet-slide-enter-from,.admin-sheet-slide-leave-to{transform:translateY(100%)}}.admin-mobile-topbar{display:none}@media (max-width: 768px){.admin-layout.is-mobile .admin-mobile-topbar{display:flex;align-items:center;gap:10px;height:52px;padding:0 12px;padding-top:env(safe-area-inset-top);background:#fff;border-bottom:1px solid rgba(15,17,21,.06);position:sticky;top:0;z-index:900}.admin-layout.is-mobile .admin-sidebar,.admin-layout.is-mobile 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h2{margin:0;font-size:18px;color:#333}.admin-mobile-drawer-close{width:36px;height:36px;border:none;border-radius:8px;background:#f5f5f5;color:#666;font-size:22px;line-height:1;cursor:pointer;flex-shrink:0}.admin-mobile-drawer-nav{flex:1;min-height:0}.admin-mobile-drawer-nav .nav-item,.admin-mobile-drawer-nav .nav-sub-item{display:block;padding:12px 16px;color:#666;text-decoration:none}.admin-mobile-drawer-nav .nav-sub-item{padding-left:32px;font-size:14px}.admin-mobile-drawer-nav .nav-item.active,.admin-mobile-drawer-nav .nav-sub-item.active{background:#e3f2fd;color:#2196f3;font-weight:500}.admin-mobile-drawer-nav .nav-group-title{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;font-weight:600;color:#333;font-size:13px;cursor:pointer}.admin-mobile-drawer-nav .nav-group-items{background:#fafafa}.admin-mobile-drawer .sidebar-footer{flex-shrink:0;padding:16px;border-top:1px solid 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