:root{--glass-bg: rgba(20, 20, 22, .55);--glass-border: rgba(255, 255, 255, .18);--text-normal: #e7eaf0;--teal: #3cc6d8;--red: #e35050;--send-blue: #1f9bd1;--bot-bubble: #6a6a6a;--user-bubble: #cfe3f6;--user-text: #435463;--shadow-lg: 0 20px 60px rgba(0, 0, 0, .35);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text-normal)}body{margin:0}html,body,#root{height:100%}#root{height:100%;display:flex;justify-content:center;align-items:stretch;padding:0}.app-container{width:100%;max-width:800px;height:100%;padding:16px;box-sizing:border-box;display:flex}.chat-container{position:relative;display:flex;width:100%;flex-direction:column;height:100%;max-height:none;border-radius:22px;background:var(--glass-bg);border:1px solid var(--glass-border);box-shadow:var(--shadow-lg);overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.chat-header{position:relative;padding:18px 20px 10px;display:flex;align-items:center;justify-content:space-between}.chat-title{color:var(--teal);font-weight:700;letter-spacing:.2px}.chat-close{width:28px;height:28px;display:grid;place-items:center;border-radius:999px;border:1px solid rgba(0,0,0,.15);background:var(--red);color:#fff;cursor:pointer;box-shadow:0 6px 18px #e3505073}.chat-close:hover{filter:brightness(.95)}.chat-divider{height:1px;background:linear-gradient(90deg,#fff0,#ffffff59 10% 90%,#fff0)}.chat-messages{flex:1;padding:18px;overflow-y:auto;background:transparent}.loading-center{width:100%;display:flex;align-items:center;justify-content:center;padding:8px 0}.chat-message{display:flex;margin-bottom:10px}.chat-message-user{justify-content:flex-end}.chat-message-bot,.chat-message-system{justify-content:flex-start}.chat-bubble{max-width:75%;padding:10px 14px;border-radius:16px;font-size:14px;line-height:1.4;white-space:pre-line;box-shadow:0 4px 12px #00000040}.chat-message-user .chat-bubble{background:var(--user-bubble);color:var(--user-text);border-bottom-right-radius:6px}.chat-message-bot .chat-bubble{background:var(--bot-bubble);color:#fff;border-bottom-left-radius:6px}.chat-message-system .chat-bubble{margin:0 auto;background:transparent;color:#9aa3ad;font-style:italic;text-align:center;box-shadow:none}.chat-bubble-loading{display:inline-flex;align-items:center;gap:4px}.typing-indicator{display:inline-flex;align-items:center;gap:4px;min-width:40px;justify-content:flex-start}.typing-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#c8ccd1;animation:typing-bounce 1s infinite ease-in-out}.typing-dot:nth-child(2){animation-delay:.15s}.typing-dot:nth-child(3){animation-delay:.3s}@keyframes typing-bounce{0%,80%,to{transform:translateY(0);opacity:.5}40%{transform:translateY(-4px);opacity:1}}.chat-error{color:#ff9aa2;font-size:13px;padding:0 16px 4px}.chat-input-area{position:relative;padding:14px 16px;display:flex;gap:8px;align-items:center}.chat-input{flex:1;resize:none;box-sizing:border-box;height:48px;min-height:48px;border-radius:24px;border:none;padding:12px 64px 12px 16px;font-size:14px;line-height:24px;font-family:inherit;background:#fff;color:#1f2a37;box-shadow:0 1px #0000000d,0 8px 20px #0000002e;transition:box-shadow .15s ease,transform .15s ease}.chat-input::placeholder{color:#8a94a2}.chat-input:focus{outline:none;box-shadow:0 0 0 2px #3cc6d840,0 10px 24px #00000038}.send-button{border:none;cursor:pointer;display:grid;place-items:center}.send-fab{position:absolute;top:50%;right:20px;transform:translateY(-50%);width:40px;height:40px;border-radius:999px;background:var(--send-blue);box-shadow:none}.send-fab:hover{filter:brightness(1.05)}.send-fab:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}