body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(to right, #6a11cb, #2575fc);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100svh;
    margin: 0;
    color: #333;
}

.hidden {
    display: none !important;
}

/* --- Styling Login Container --- */
.login-container {
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 40px;
    width: 90%;
    max-width: 400px;
    text-align: center;
}

.login-container h2 {
    color: #2575fc;
    margin-bottom: 30px;
    font-size: 1.8em;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    color: #555;
}

.input-group input {
    width: calc(100% - 24px); /* Account for padding */
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1em;
    outline: none;
    transition: border-color 0.3s;
}

.input-group input:focus {
    border-color: #2575fc;
}

#login-button {
    background-color: #2575fc;
    color: white;
    border: none;
    border-radius: 25px;
    padding: 12px 30px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: 700;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 10px rgba(37, 117, 252, 0.3);
    width: 100%;
    margin-top: 10px;
}

#login-button:hover {
    background-color: #1a60cc;
    transform: translateY(-2px);
}

#login-button:active {
    transform: translateY(0);
}

.error-message {
    color: #e74c3c;
    margin-top: 15px;
    font-weight: 500;
}


/* --- Styling Chat Container (Existing) --- */
.chat-container {
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 500px;
    height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.chat-header {
    background-color: #2575fc;
    color: white;
    padding: 15px 20px;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    text-align: center;
    font-size: 1.2em;
    font-weight: 700;
    display: flex; /* Untuk menempatkan tombol logout */
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    margin: 0;
    flex-grow: 1;
}

.logout-button {
    background-color: #e74c3c; /* Merah untuk logout */
    color: white;
    border: none;
    border-radius: 20px;
    padding: 8px 15px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.3s ease;
}

.logout-button:hover {
    background-color: #c0392b;
}

.chat-box {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    background-color: #f7f9fc;
    border-bottom: 1px solid #eee;
}

.message {
    display: flex;
    margin-bottom: 15px;
}

.message.user {
    justify-content: flex-end;
}

.message.bot {
    justify-content: flex-start;
}

.message-bubble {
    padding: 12px 18px;
    border-radius: 20px;
    max-width: 75%;
    line-height: 1.5;
    word-wrap: break-word;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.message.user .message-bubble {
    background-color: #2575fc;
    color: white;
    border-bottom-right-radius: 5px;
}

.message.bot .message-bubble {
    background-color: #e0e0e0;
    color: #333;
    border-bottom-left-radius: 5px;
}

.chat-input-container {
    display: flex;
    padding: 15px 20px;
    background-color: #ffffff;
    border-top: 1px solid #eee;
}

#user-input {
    flex-grow: 1;
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 25px;
    font-size: 1em;
    outline: none;
    transition: border-color 0.3s;
}

#user-input:focus {
    border-color: #2575fc;
}

#send-button {
    background-color: #2575fc;
    color: white;
    border: none;
    border-radius: 25px;
    padding: 12px 20px;
    margin-left: 10px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 700;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 10px rgba(37, 117, 252, 0.3);
}

#send-button:hover {
    background-color: #1a60cc;
    transform: translateY(-2px);
}

#send-button:active {
    transform: translateY(0);
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .chat-container {
        width: 100%;
        height: 100svh;
        border-radius: 0;
        box-shadow: none;
    }

    .chat-header {
        border-radius: 0;
    }

    .chat-input-container {
        padding: 10px 15px;
    }

    #user-input {
        padding: 10px 12px;
    }

    #send-button {
        padding: 10px 15px;
    }

    .login-container {
        width: 100%;
/*         height: 100vh; */
    	margin: 0 1rem;
        border-radius: 1rem;
        box-shadow: none;
        padding: 20px;
        display: flex; /* Ensure flex for full height content */
        flex-direction: column;
        justify-content: center;
    }
}

/* --- Bagian untuk Loading Spinner --- */

/* Gaya dasar spinner */
.loading-spinner {
    border: 4px solid rgba(255, 255, 255, 0.3); /* Warna border luar (sedikit transparan) */
    border-radius: 50%; /* Membuat lingkaran */
    border-top: 4px solid #fff; /* Warna spinner utama (putih) */
    width: 20px; /* Lebar spinner */
    height: 20px; /* Tinggi spinner */
    -webkit-animation: spin 1s linear infinite; /* Animasi untuk Safari */
    animation: spin 1s linear infinite; /* Animasi putar */
    display: inline-block; /* Agar bisa diatur posisinya */
    vertical-align: middle; /* Penempatan vertikal */
}

/* Keyframes untuk animasi putar */
@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Gaya tombol saat loading */
#send-button.loading {
    cursor: not-allowed; /* Ubah kursor saat tidak bisa diklik */
    background-color: #007bff; /* <--- UBAH INI: Warna biru yang lebih cerah */
    position: relative; /* Penting untuk penempatan spinner secara absolut */
    text-indent: -9999px; /* Sembunyikan teks "Kirim" */
    overflow: hidden; /* Pastikan teks yang ter-indent tetap tersembunyi */
    /* Opsional: Sesuaikan padding atau line-height jika spinner masih terlihat off-center
       tergantung pada desain spesifik tombol Anda.
       Misalnya:
       padding: 0;
       line-height: 1;
    */
}

/* Penempatan spinner di tengah tombol saat loading */
#send-button.loading .loading-spinner {
    position: absolute;
    top: 20%;
    left: 22%;
    transform: translate(-50%, -50%); /* Memastikan spinner di tengah secara sempurna */
    margin: 0; /* Pastikan tidak ada margin yang mengganggu */
    text-indent: 0; /* Tampilkan spinner */
}

/* Opsional: Gaya untuk pesan loading bot (jika ingin berbeda dari pesan bot biasa) */
.message.bot.loading-bot-message .message-bubble {
    font-style: italic;
    color: #888;
}