:root{--vt-c-white: #ffffff;--vt-c-white-soft: #f8f8f8;--vt-c-white-mute: #f2f2f2;--vt-c-black: #181818;--vt-c-black-soft: #222222;--vt-c-black-mute: #282828;--vt-c-indigo: #2c3e50;--vt-c-divider-light-1: rgba(60, 60, 60, .29);--vt-c-divider-light-2: rgba(60, 60, 60, .12);--vt-c-divider-dark-1: rgba(84, 84, 84, .65);--vt-c-divider-dark-2: rgba(84, 84, 84, .48);--vt-c-text-light-1: var(--vt-c-indigo);--vt-c-text-light-2: rgba(60, 60, 60, .66);--vt-c-text-dark-1: var(--vt-c-white);--vt-c-text-dark-2: rgba(235, 235, 235, .64)}:root{--color-background: var(--vt-c-white);--color-background-soft: var(--vt-c-white-soft);--color-background-mute: var(--vt-c-white-mute);--color-border: var(--vt-c-divider-light-2);--color-border-hover: var(--vt-c-divider-light-1);--color-heading: var(--vt-c-text-light-1);--color-text: var(--vt-c-text-light-1);--section-gap: 160px}@media (prefers-color-scheme: dark){:root{--color-background: var(--vt-c-black);--color-background-soft: var(--vt-c-black-soft);--color-background-mute: var(--vt-c-black-mute);--color-border: var(--vt-c-divider-dark-2);--color-border-hover: var(--vt-c-divider-dark-1);--color-heading: var(--vt-c-text-dark-1);--color-text: var(--vt-c-text-dark-2)}}*,*:before,*:after{box-sizing:border-box;margin:0;font-weight:400}body{min-height:100vh;color:var(--color-text);background:var(--color-background);transition:color .5s,background-color .5s;line-height:1.6;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;font-size:15px;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{display:flex;justify-content:center;align-items:center;height:100vh;width:100%;background:linear-gradient(135deg,#0f172a,#064e3b)}#app main{width:100%}.chat-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;position:relative}.chat-wrapper:before{content:"";position:absolute;inset:0;pointer-events:none}.chat-container{width:100%;max-width:480px;height:700px;background:#fff;border-radius:20px;box-shadow:0 25px 50px -12px #00000040,0 0 0 1px #ffffff1a;display:flex;flex-direction:column;overflow:hidden;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;position:relative;z-index:1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.chat-header{background:linear-gradient(135deg,#10b981,#059669);padding:16px 20px;display:flex;align-items:center;justify-content:space-between;color:#fff}.header-info{display:flex;align-items:center;gap:12px}.avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff}.admin-avatar{background:#fff3}.minimize-btn{background:#fff3;border:none;border-radius:8px;padding:8px;color:#fff;cursor:pointer;transition:background-color .2s}.minimize-btn:hover{background:#ffffff4d}.messages-container{flex:1;overflow-y:auto;padding:20px;background:#f8fafc;display:flex;flex-direction:column;gap:16px}.messages-container::-webkit-scrollbar{width:4px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:2px}.message{display:flex;gap:8px;align-items:flex-start}.user-message{flex-direction:row-reverse}.message-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:4px}.admin-message .message-avatar{background:#10b981;color:#fff}.user-message .message-avatar{background:#e5e7eb;color:#6b7280}.message-content{max-width:70%;display:flex;flex-direction:column;gap:4px}.user-message .message-content{align-items:flex-end}.message-bubble{padding:12px 16px;border-radius:18px;font-size:14px;line-height:1.4;word-wrap:break-word;white-space:pre-line}.admin-message .message-bubble{background:#fff;color:#374151;border:1px solid #e5e7eb}.user-message .message-bubble{background:#10b981;color:#fff}.message-time{font-size:11px;color:#9ca3af;padding:0 4px}.typing-indicator{background:#fff;border:1px solid #e5e7eb;border-radius:18px;padding:12px 16px;display:flex;gap:4px;align-items:center}.typing-indicator span{width:6px;height:6px;border-radius:50%;background:#10b981;animation:typing 1.4s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.5}30%{transform:translateY(-10px);opacity:1}}.input-container{padding:16px 20px;background:#fff;border-top:1px solid #e5e7eb}.input-wrapper{display:flex;gap:8px;align-items:center}.message-input{flex:1;padding:12px 16px;border:1px solid #d1d5db;border-radius:24px;font-size:14px;outline:none;transition:border-color .2s,box-shadow .2s}.message-input:focus{border-color:#10b981;box-shadow:0 0 0 3px #10b9811a}.message-input::placeholder{color:#9ca3af}.send-button{width:44px;height:44px;border-radius:50%;background:#10b981;border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background-color .2s,transform .1s}.send-button:hover:not(:disabled){background:#059669;transform:scale(1.05)}.send-button:disabled{background:#d1d5db;cursor:not-allowed;transform:none}.send-button:active:not(:disabled){transform:scale(.95)}@media (min-width: 768px){.chat-container{max-width:520px;height:750px}}@media (min-width: 1024px){.chat-container{max-width:580px;height:800px}}@media (max-width: 480px){.chat-wrapper{padding:0}.chat-container{max-width:100%;height:100vh;border-radius:0}.message-content{max-width:85%}}.upload-button{width:44px;height:44px;border-radius:50%;background:#f3f4f6;border:1px solid #d1d5db;color:#6b7280;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.upload-button:hover{background:#e5e7eb;color:#10b981;border-color:#10b981}.image-preview{padding:12px 0}.preview-container{background:#f8fafc;border:1px solid #e5e7eb;border-radius:12px;padding:12px;display:flex;align-items:center;gap:12px}.preview-image{width:60px;height:60px;object-fit:cover;border-radius:8px;border:1px solid #e5e7eb}.preview-info{flex:1;display:flex;align-items:center;justify-content:space-between}.preview-name{font-size:14px;color:#374151;font-weight:500}.remove-preview{background:#fee2e2;border:none;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;color:#dc2626;cursor:pointer;transition:background-color .2s}.remove-preview:hover{background:#fecaca}.message-image{max-width:200px;max-height:200px;border-radius:12px;margin-bottom:8px;cursor:pointer;transition:transform .2s}.message-image:hover{transform:scale(1.02)}.image-message{padding:8px!important}.image-message span{display:block;margin-top:8px}@media (max-width: 480px){.message-image{max-width:150px;max-height:150px}.preview-image{width:50px;height:50px}}