:root{--bg: #F5F0E8;--bg-warm: #EDE5D8;--surface: #FFFFFF;--border: #D9CFC0;--border-light: #E8DFD2;--text: #1A1612;--muted: #6B5E4F;--accent: #C17F3E;--accent-hover: #a96a2f;--accent-light: rgba(193,127,62,.1);--radius: 16px;--radius-sm: 6px;--success: #4A9E52;--success-dim: rgba(74, 158, 82, .1);--error: #C94040;--error-dim: rgba(201, 64, 64, .1)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden;overscroll-behavior:none;position:fixed;width:100%;touch-action:none}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.app-layout{display:flex;position:fixed;left:0;top:var(--vvtop, 0px);width:100%;height:var(--vvh, 100dvh);overflow:hidden}.sidebar{position:relative;width:360px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border-light);display:flex;flex-direction:column;overflow:hidden}.main{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden;background:var(--bg)}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);gap:8px}.empty-icon{font-size:48px;opacity:.3}.back-btn{display:none;width:36px;height:36px;border:none;background:none;cursor:pointer;font-size:20px;color:var(--accent);flex-shrink:0}@media(max-width:768px){.sidebar{width:100%;position:absolute;top:0;right:0;bottom:0;left:0;z-index:10}.app-layout.thread-open .sidebar{display:none}.app-layout:not(.thread-open) .main{display:none}.back-btn{display:flex;align-items:center;justify-content:center}}.club-avatar{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-weight:600;font-size:16px;color:var(--surface);background:var(--accent);transition:border-radius .2s,transform .1s;position:relative;overflow:hidden}.club-avatar:hover{border-radius:10px;transform:scale(1.05)}.club-avatar.active{border-radius:8px}.club-avatar.active:before{content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);width:4px;height:20px;background:var(--accent);border-radius:0 4px 4px 0}.club-avatar img{width:100%;height:100%;object-fit:cover}.club-avatar .unread-badge{position:absolute;bottom:-2px;right:-2px;min-width:16px;height:16px;border-radius:8px;background:var(--error);color:#fff;font-size:10px;font-weight:600;display:flex;align-items:center;justify-content:center;padding:0 4px;border:2px solid var(--bg-warm)}.sidebar-header-bar{height:56px;padding:0 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border-light);flex-shrink:0}.sidebar-header-title{font-size:17px;font-weight:700;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-header-badge{font-size:11px;font-weight:600;color:var(--accent);background:var(--accent-light);padding:2px 8px;border-radius:9999px;flex-shrink:0}.sidebar-back-btn{width:36px;height:36px;border-radius:50%;border:none;background:none;color:var(--accent);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}.sidebar-back-btn:hover{background:var(--accent-light)}.thread-search{padding:6px 12px;position:relative;flex-shrink:0}.thread-search-input{width:100%;padding:8px 32px 8px 12px;border:1px solid var(--border-light);border-radius:8px;font-size:16px;font-family:inherit;background:var(--bg);outline:none}.thread-search-input:focus{border-color:var(--accent)}.thread-search-clear{position:absolute;right:18px;top:50%;transform:translateY(-50%);border:none;background:none;font-size:18px;color:var(--muted);cursor:pointer}.sidebar-scroll{flex:1;overflow-y:auto;padding:4px 0;touch-action:pan-y;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.sidebar-slide-in{animation:slideInFromRight .2s ease}@keyframes slideInFromRight{0%{transform:translate(30px);opacity:.5}to{transform:translate(0);opacity:1}}.club-list-item{display:flex;align-items:center;gap:12px;padding:10px 16px;cursor:pointer;transition:background 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.msg-check{color:#c17f3e80}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--text);color:var(--surface);padding:8px 20px;border-radius:9999px;font-size:13px;font-weight:500;z-index:2000;animation:toastIn .2s ease,toastOut .2s ease 1.8s forwards}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes toastOut{0%{opacity:1}to{opacity:0}}.create-thread-bar{padding:8px 12px;border-bottom:1px solid var(--border-light);flex-shrink:0}.create-thread-toggle{width:100%;padding:8px 12px;border:1px dashed var(--border);border-radius:10px;background:none;color:var(--accent);font-size:13px;font-weight:500;font-family:inherit;cursor:pointer;transition:background .15s}.create-thread-toggle:hover{background:var(--accent-light)}.create-thread-form{display:flex;gap:6px;align-items:center}.create-thread-form input{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;font-family:inherit;outline:none;background:var(--surface);color:var(--text)}.create-thread-form input:focus{border-color:var(--accent)}.create-thread-btn{padding:8px 14px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;font-family:inherit;cursor:pointer;white-space:nowrap}.create-thread-btn:hover{background:var(--accent-hover)}.create-thread-cancel{width:28px;height:28px;border:none;border-radius:50%;background:var(--bg-warm);color:var(--muted);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center}@keyframes fbSlide{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@keyframes fbSlideOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-6px)}}.fb-btn{width:32px;height:32px;border-radius:50%;background:none;border:none;cursor:pointer;font-size:20px;line-height:1;filter:saturate(.85);transition:filter .2s,transform .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.fb-btn:hover{filter:saturate(1.2) brightness(1.1);transform:scale(1.15)}.fb-form{position:fixed;top:54px;right:12px;width:300px;padding:18px;background:var(--surface);border:1px solid var(--border-light);border-radius:14px;box-shadow:0 8px 32px #00000026;z-index:200}.fb-form.open{animation:fbSlide .15s ease}.fb-close{position:absolute;top:8px;right:10px;background:none;border:none;font-size:18px;cursor:pointer;color:var(--muted);padding:8px;line-height:1}.fb-close:hover{opacity:.7}.fb-form h4{font-size:15px;font-weight:600;margin-bottom:10px}.fb-form textarea{width:100%;resize:none;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:14px;font-family:inherit;outline:none;background:var(--bg);color:var(--text);box-sizing:border-box}.fb-form textarea:focus{border-color:var(--accent)}.fb-hint{font-size:12px;color:var(--muted);margin:6px 0 12px;line-height:1.4}.fb-submit{width:100%;padding:10px;border:none;border-radius:100px;background:var(--accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}.fb-submit:hover{background:var(--accent-hover)}.fb-submit:disabled{opacity:.6;cursor:not-allowed}.fb-error{font-size:13px;color:var(--error);margin-top:8px}.fb-success{text-align:center;padding:16px 0}.fb-success .check{width:40px;height:40px;border-radius:50%;background:var(--success);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;margin:0 auto 10px}.fb-success p{font-size:15px;font-weight:500}.chat-header{height:56px;padding:0 16px;border-bottom:1px solid var(--border-light);background:var(--surface);display:flex;align-items:center;gap:10px;flex-shrink:0}.chat-header-title{font-size:16px;font-weight:600;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-menu-wrapper{position:relative;flex-shrink:0}.chat-menu-btn{width:36px;height:36px;border-radius:50%;border:none;background:none;color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s}.chat-menu-btn:hover{background:var(--bg-warm);color:var(--text)}.chat-menu-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:999}.chat-menu-dropdown{position:absolute;top:100%;right:0;margin-top:4px;z-index:1000;background:var(--surface);border:1px solid var(--border-light);border-radius:12px;box-shadow:0 8px 24px #0000001f;padding:6px 0;min-width:200px;animation:menuFadeIn .12s ease}@keyframes menuFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.chat-menu-dropdown button{display:flex;align-items:center;gap:10px;width:100%;padding:10px 16px;border:none;background:none;font-size:14px;font-family:inherit;color:var(--text);cursor:pointer;transition:background .1s}.chat-menu-dropdown button:hover{background:var(--bg-warm)}.chat-menu-dropdown button svg{color:var(--muted);flex-shrink:0}.chat-menu-divider{height:1px;background:var(--border-light);margin:4px 0}.chat-panel-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#0000004d;animation:fadeIn .15s ease}.chat-panel{position:absolute;top:0;right:0;width:340px;height:100%;background:var(--surface);box-shadow:-4px 0 24px #0000001a;display:flex;flex-direction:column;animation:panelSlideIn .2s ease}@keyframes panelSlideIn{0%{transform:translate(100%)}to{transform:translate(0)}}.chat-panel-header{height:56px;padding:0 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border-light);font-size:17px;font-weight:700;flex-shrink:0}.club-info-panel{padding:32px 24px;display:flex;flex-direction:column;align-items:center;text-align:center}.club-info-avatar{width:80px;height:80px;border-radius:50%;background:var(--accent-light);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;margin-bottom:16px}.club-info-name{font-size:20px;font-weight:700;margin:0}.club-info-level{font-size:13px;color:var(--accent);font-weight:600;margin-top:4px}.club-info-desc{font-size:14px;color:var(--muted);margin-top:12px;line-height:1.5}.club-info-stats{display:flex;gap:32px;margin-top:24px}.club-info-stat{display:flex;flex-direction:column;align-items:center}.club-info-stat-value{font-size:24px;font-weight:700;color:var(--accent)}.club-info-stat-label{font-size:12px;color:var(--muted);margin-top:2px}.message-list-wrapper{flex:1;position:relative;overflow:hidden;display:flex;flex-direction:column}.message-list{flex:1;overflow-x:hidden;overflow-y:auto;padding:16px 20px 0;display:flex;flex-direction:column;gap:4px;touch-action:pan-y;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.scroll-to-bottom{position:absolute;right:16px;bottom:12px;width:36px;height:36px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--text-dim);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 8px #00000026;z-index:10;transition:opacity .15s}.scroll-to-bottom:hover{background:var(--bg-warm);color:var(--text)}.msg-row{max-width:min(520px,100%);display:flex;flex-direction:column;min-width:0}.msg-row.incoming{align-self:flex-start}.msg-row.msg-group-middle,.msg-row.msg-group-last{margin-top:-2px}.msg-row.incoming.msg-group-first .msg-bubble,.msg-row.incoming.msg-group-first .msg-standalone-content{border-bottom-left-radius:4px}.msg-row.incoming.msg-group-middle .msg-bubble,.msg-row.incoming.msg-group-middle .msg-standalone-content{border-top-left-radius:4px;border-bottom-left-radius:4px}.msg-row.incoming.msg-group-last .msg-bubble,.msg-row.incoming.msg-group-last .msg-standalone-content{border-top-left-radius:4px}.msg-row.outgoing.msg-group-first .msg-bubble,.msg-row.outgoing.msg-group-first .msg-standalone-content{border-bottom-right-radius:4px}.msg-row.outgoing.msg-group-middle .msg-bubble,.msg-row.outgoing.msg-group-middle .msg-standalone-content{border-top-right-radius:4px;border-bottom-right-radius:4px}.msg-row.outgoing.msg-group-last .msg-bubble,.msg-row.outgoing.msg-group-last .msg-standalone-content{border-top-right-radius:4px}.msg-sender-line{display:flex;align-items:center;gap:6px;margin-bottom:2px;padding:0 2px}.msg-sender-name{font-size:13px;font-weight:600;color:var(--accent)}.msg-sender-role{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.3px;padding:1px 6px;border-radius:4px}.msg-sender-role.teacher{color:var(--accent);background:var(--accent-light)}.msg-sender-role.admin{color:var(--error);background:var(--error-dim)}.msg-bubble{padding:8px 12px;border-radius:var(--radius);font-size:14px;line-height:1.55;position:relative;word-wrap:break-word}.msg-row.incoming .msg-bubble{background:var(--surface);border:1px solid var(--border-light);border-bottom-left-radius:4px}.msg-row.outgoing .msg-bubble{background:var(--accent-light);border:1px solid rgba(193,127,62,.15);border-bottom-right-radius:4px}.msg-time-inline{float:right;font-size:11px;color:var(--muted);margin-left:8px;margin-top:4px;line-height:1}.msg-row.outgoing .msg-time-inline{color:#c17f3e99}.msg-time-standalone{display:block;font-size:11px;color:var(--muted);text-align:right;margin-top:2px;padding-right:2px}.msg-standalone-content{position:relative}.msg-reply-bar{font-size:12px;color:var(--muted);border-left:2px solid var(--accent);padding-left:8px;margin-bottom:4px;display:flex;flex-direction:column;gap:1px;overflow:hidden;min-width:0;max-width:100%}.msg-reply-name{font-weight:600;color:var(--accent);font-size:11px}.msg-reply-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.msg-row{position:relative}.msg-swipe-icon{position:absolute;top:50%;transform:translateY(-50%) scale(0);width:28px;height:28px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;opacity:0;transition:transform .15s ease,opacity .15s ease;pointer-events:none;z-index:1}.msg-row.swiping .msg-swipe-icon{transition:none}.msg-swipe-icon.visible{opacity:1;transform:translateY(-50%) scale(1)}.msg-swipe-icon svg{width:16px;height:16px;color:var(--accent)}.msg-context-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:999}.msg-context-menu{position:fixed;z-index:1000;background:var(--surface);border:1px solid var(--border-light);border-radius:8px;box-shadow:0 4px 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