/* CSS Reset Sederhana */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f0f4f0 0%, #e3f2fd 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    padding: 1rem;
}

/* Scalable Typography */
.scalable-text {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    line-height: 1.5;
}

/* Flexible Grid Container */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    width: 100%;
    max-width: 1200px;
    padding: 1rem;
    margin: 0 auto;
}

/* --- CSS UNTUK MODAL/FORMULIR TELAH DIHAPUS --- */

/* Kontainer Chat */
#chat-container {
    width: 100%;
    max-width: 800px;
    height: 80vh;
    max-height: 700px;
    background-color: #ffffff;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#chat-header {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    font-weight: 600;
    font-size: 1.25rem;
    border-bottom: 1px solid #45a049;
    padding: 1rem;
    text-align: center;
    position: relative;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Hamburger Menu Icon */
.menu-toggle {
    display: none;
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    margin: 0 0.5rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
    display: block;
    width: 100%;
    text-align: center;
    padding: 1rem;
    -webkit-tap-highlight-color: transparent;
}

.nav-menu a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

#chat-box {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1rem;
    background-color: #fafafa;
    display: flex;
    flex-direction: column;
    background-image: radial-gradient(#e0e0e0 1px, transparent 1px);
    background-size: 20px 20px;
}

.message {
    margin-bottom: 0.75rem;
    max-width: 85%;
    line-height: 1.5;
    word-wrap: break-word;
    padding: 0.75rem 1rem;
    border-radius: 1.25rem;
    animation: fadeIn 0.3s ease-in-out;
}

/* Pesan dari Pengguna (KE KANAN, UKURAN PAS) */
.user-message {
    background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
    color: white;
    border-radius: 20px 20px 5px 20px;
    align-self: flex-end;
    margin-left: auto;
    text-align: right;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Pesan dari Bot (KE KIRI) */
.bot-message {
    background: linear-gradient(135deg, #f1f1f1 0%, #e0e0e0 100%);
    color: #333;
    border: 1px solid #e0e0e0;
    border-radius: 20px 20px 20px 5px;
    align-self: flex-start;
    margin-right: auto;
    text-align: left;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

#input-area {
    display: flex;
    padding: 1rem;
    border-top: 1px solid #e0e0e0;
    background-color: #ffffff;
    flex-shrink: 0;
    gap: 0.5rem;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.05);
}

#upload-button {
    border: none;
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    color: white;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
    min-height: 3rem;
    min-width: 3rem;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

#upload-button:hover {
    background: linear-gradient(135deg, #1976D2 0%, #1565C0 100%);
    transform: scale(1.05);
}

#upload-button:active {
    transform: scale(0.95);
}
#user-input {
    flex-grow: 1;
    border: 2px solid #e0e0e0;
    border-radius: 1.25rem;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
    min-height: 3rem;
    outline: none;
    background-color: #f9f9f9;
}

#user-input:focus {
    border-color: #4CAF50;
    outline: none;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.4);
}

#send-button {
    border: none;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
    min-height: 3rem;
    min-width: 3rem;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

#send-button:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

#send-button:active {
    transform: scale(0.95);
}

/* Media Queries for Responsive Design */
@media (min-width: 768px) {
    #chat-container {
        width: 90%;
        max-width: 800px;
        height: 90vh;
        max-height: 700px;
        border-radius: 0.75rem;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    #chat-header {
        font-size: 1.1em;
        padding: 1rem 1.25rem;
    }
    
    .message {
        padding: 0.75rem 1rem;
    }
    
    #user-input {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
    
    #send-button {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #4CAF50;
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    

/* Fade-in Animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-menu li {
    margin: 0.5rem 0;
}
}