:root{--bg: #0a0a0f;--bg-chat: #111118;--bg-bubble-me: #14b8a6;--bg-bubble-them: #1a1a24;--text-primary: #f0f0f0;--text-secondary: #9ca3af;--text-muted: #4b5563;--border: rgba(255,255,255,.06);--accent: #14b8a6;--accent-glow: rgba(20,184,166,.15);--radius: 16px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text-primary);min-height:100vh;min-height:100dvh;overflow:hidden;-webkit-font-smoothing:antialiased}#root{height:100vh;height:100dvh;display:flex;flex-direction:column}.chat-container{display:flex;flex-direction:column;height:100%;background:var(--bg)}.chat-header{padding:12px 16px;background:#0a0a0ff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;flex-shrink:0;z-index:10}.chat-header .avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#0d9488);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;color:#000;flex-shrink:0}.chat-header .info h1{font-size:14px;font-weight:700;line-height:1.2}.chat-header .info p{font-size:11px;color:var(--text-muted)}.messages-area{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:6px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.05) transparent}.msg-group{display:flex;flex-direction:column;gap:2px;max-width:80%}.msg-group.me{align-self:flex-end;align-items:flex-end}.msg-group.them{align-self:flex-start;align-items:flex-start}.msg-bubble{padding:10px 14px;border-radius:18px;font-size:14px;line-height:1.45;word-break:break-word;animation:fadeUp .2s ease}.msg-group.me .msg-bubble{background:var(--bg-bubble-me);color:#000;border-bottom-right-radius:4px}.msg-group.them .msg-bubble{background:var(--bg-bubble-them);color:var(--text-primary);border-bottom-left-radius:4px}.msg-time{font-size:10px;color:var(--text-muted);padding:0 4px}.input-area{padding:12px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom));background:#0a0a0ff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--border);display:flex;align-items:flex-end;gap:8px;flex-shrink:0}.input-area textarea{flex:1;background:var(--bg-bubble-them);color:var(--text-primary);border:1px solid var(--border);border-radius:20px;padding:10px 16px;font-size:14px;font-family:inherit;resize:none;outline:none;max-height:120px;line-height:1.4;transition:border-color .2s}.input-area textarea:focus{border-color:var(--accent)}.input-area textarea::placeholder{color:var(--text-muted)}.send-btn{width:40px;height:40px;border-radius:50%;background:var(--accent);border:none;color:#000;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;flex-shrink:0}.send-btn:hover{background:#0d9488;transform:scale(1.05)}.send-btn:active{transform:scale(.95)}.send-btn:disabled{opacity:.3;cursor:default;transform:none}.install-banner{padding:10px 16px;background:linear-gradient(90deg,var(--accent-glow),rgba(139,92,246,.08));border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px;flex-shrink:0;animation:fadeDown .3s ease}.install-banner p{font-size:12px;color:var(--text-secondary)}.install-banner p strong{color:var(--accent)}.install-banner button{padding:6px 14px;border-radius:20px;font-size:11px;font-weight:700;border:none;cursor:pointer;transition:all .2s}.install-btn-primary{background:var(--accent);color:#000}.install-btn-dismiss{background:transparent;color:var(--text-muted)}.expired-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;text-align:center}.expired-container h1{font-size:24px;font-weight:900;margin:16px 0 8px}.expired-container p{color:var(--text-secondary);font-size:14px;max-width:320px;margin-bottom:24px}.btn-reopen{padding:12px 24px;border-radius:12px;font-size:14px;font-weight:700;background:var(--accent);color:#000;border:none;cursor:pointer;transition:all .2s}.btn-reopen:hover{background:#0d9488}.btn-reopen:disabled{opacity:.4;cursor:default}.btn-reopen.sent{background:#22c55e26;color:#22c55e;border:1px solid rgba(34,197,94,.2)}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:16px}.loading-screen .spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.date-separator{text-align:center;padding:8px 0;font-size:11px;color:var(--text-muted);font-weight:600}@keyframes fadeUp{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}.messages-area::-webkit-scrollbar{width:4px}.messages-area::-webkit-scrollbar-track{background:transparent}.messages-area::-webkit-scrollbar-thumb{background:#ffffff0d;border-radius:4px}.smart-reply-bar{display:flex;align-items:center;gap:6px;padding:8px 16px;overflow-x:auto;scrollbar-width:none;flex-shrink:0;animation:fadeUp .25s ease}.smart-reply-bar::-webkit-scrollbar{display:none}.smart-reply-icon{color:var(--accent);flex-shrink:0;opacity:.6}.smart-reply-chip{padding:7px 14px;border-radius:20px;font-size:12px;font-weight:500;font-family:inherit;white-space:nowrap;background:#14b8a614;color:var(--accent);border:1px solid rgba(20,184,166,.15);cursor:pointer;transition:all .2s ease;flex-shrink:0}.smart-reply-chip:hover{background:#14b8a62e;border-color:#14b8a659;transform:translateY(-1px);box-shadow:0 2px 8px #14b8a626}.smart-reply-chip:active{transform:scale(.97)}