:root{--primary-color:#1976d2;--primary-dark:#125aa2;--bg-light:#f4f4f4;--bg-dark:#1c1c1c;--text-dark:#2c3e50;--text-light:#f4f4f4;--card-bg:#fff;--card-bg-dark:#2a2a2a;--input-bg-dark:#444;--input-border-dark:#666}body{font-family:Segoe UI,sans-serif;background-color:var(--bg-light);color:var(--text-dark);margin:0;padding:40px 20px;text-align:center;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s ease,color .3s ease}h1,h2{color:var(--primary-color);margin-bottom:10px}.container{background:var(--card-bg);max-width:520px;margin:auto;padding:30px 25px;border-radius:14px;box-shadow:0 6px 14px rgba(0,0,0,.08);text-align:left;transition:background-color .3s ease}label{display:block;margin:14px 0 6px;font-weight:700;font-size:15px}input,select{width:100%;padding:10px;font-size:16px;margin-bottom:14px;border:1px solid #ccc;border-radius:8px;box-sizing:border-box;transition:background-color .3s ease,color .3s ease}button:focus,input:focus,select:focus{outline:2px solid var(--primary-color);outline-offset:2px}button{background-color:var(--primary-color);color:#fff;padding:12px;width:100%;font-size:16px;font-weight:700;border:none;border-radius:8px;cursor:pointer;transition:background-color .3s ease}button:hover{background-color:var(--primary-dark)}button:disabled{background-color:#aaa;cursor:not-allowed}.biz-logo{display:block;max-width:120px;margin:0 auto 20px}.status-msg{margin-top:12px;font-weight:700;color:#555}.warning{color:red;font-size:14px;margin-top:-10px;display:block;margin-bottom:10px}.booking-banner{background:#e3f2fd;padding:10px 14px;margin-bottom:20px;border-left:5px solid var(--primary-color);border-radius:6px;font-size:14px}.loading-msg{font-size:18px;color:#888}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background-color:#4caf50;color:#fff;padding:12px 20px;border-radius:8px;font-weight:700;box-shadow:0 4px 10px rgba(0,0,0,.1);animation:fadeInOut 3s ease-in-out forwards}@keyframes fadeInOut{0%{opacity:0;transform:translateX(-50%) translateY(10px)}10%{opacity:1;transform:translateX(-50%) translateY(0)}90%{opacity:1}to{opacity:0;transform:translateX(-50%) translateY(10px)}}.dark{background-color:var(--bg-dark);color:var(--text-light)}.dark .container{background:var(--card-bg-dark)}.dark input,.dark select{background:var(--input-bg-dark);color:var(--text-light);border:1px solid var(--input-border-dark)}.chat-button{position:fixed;bottom:20px;right:20px;background-color:var(--primary-color);color:#fff;padding:12px 16px;border-radius:50px;font-size:16px;font-weight:700;border:none;box-shadow:0 4px 6px rgba(0,0,0,.2);cursor:pointer}