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var(--accent);background:transparent;color:var(--accent);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .15s}.chat-send-btn:not(:disabled):hover{background:var(--accent);color:#000}.chat-send-btn:disabled{opacity:.2;cursor:default;border-color:var(--text-muted);color:var(--text-muted)}.chat-input-footer{text-align:center;padding:6px 0 0;font-size:11px;color:var(--text-muted);font-family:var(--font-mono)}.limit-warning{color:#f44}.vpn-instruction{max-width:440px;animation:vpnFadeIn .5s ease-out}@keyframes vpnFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.vpn-header{display:flex;align-items:center;gap:10px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}.vpn-header-icon{width:36px;height:36px;border-radius:4px;border:1px solid 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a{color:var(--accent);text-decoration:underline}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media(max-width:768px){.app,.main{height:100dvh}.main--sidebar-open{margin-left:0}.sidebar{width:220px}.sidebar--open{box-shadow:0 0 40px #000c}.messages{padding:12px 8px}.welcome h1{font-size:15px}.message{font-size:12px;gap:8px}.message-avatar{display:none}.vpn-instruction{max-width:100%}.vpn-header{gap:8px}.vpn-header-icon{width:30px;height:30px}.vpn-header-title{font-size:13px}.vpn-header-sub{font-size:10px}.vpn-platform-header{padding:9px 10px;font-size:12px}.vpn-platform-content{padding:0 10px 10px}.vpn-buttons{flex-direction:column}.vpn-btn{padding:10px 14px;font-size:12px;justify-content:center}.vpn-notice{padding:10px}.vpn-notice-text{font-size:10px}.chat-input-wrapper{padding:0 8px 8px;padding-bottom:max(8px,env(safe-area-inset-bottom))}.chat-input{font-size:16px}.chat-input-footer{font-size:10px}.chat-input-container{padding:6px 8px}.chat-send-btn{width:32px;height:32px}}