:root {
    --bg-primary: #000000;
    --bg-secondary: #1C1C1E; 
    --text-primary: #FFFFFF;
    --text-secondary: #8E8E93;
    --accent-color-start: #6A5ACD; /* Ungu */
    --accent-color-end: #4169E1; /* Biru */
    --border-color: #2A2A2C;
    --button-bg: #333333;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100vh;
    max-width: 800px; 
    margin: 0 auto;
    background-color: var(--bg-primary);
    position: relative;
}

/* Header Aplikasi */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    width: 100%;
    box-sizing: border-box;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
}

.icon-button {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5em;
    cursor: pointer;
}

.model-display {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
}

.model-logo-small {
    width: 24px;
    height: 24px;
}

/* Konten Utama */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center; /* Memusatkan logo di awal */
    align-items: center;
    overflow-y: auto;
    width: 100%;
    padding: 80px 20px 120px 20px; /* Atas, Kiri/Kanan, Bawah */
    box-sizing: border-box;
}

.initial-view {
    text-align: center;
}

.main-logo {
    width: 80px; /* Sesuaikan ukuran logo utama */
    height: auto;
    opacity: 0.9;
}

/* Riwayat Chat */
.chat-history {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* Mulai chat dari atas */
}

.chat-message {
    display: flex;
    flex-direction: column;
    margin-bottom: 25px;
    max-width: 100%;
}

.chat-message.ai {
    align-items: flex-start;
}

.chat-message.user {
    align-items: flex-end;
}

.ai-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.ai-icon {
    width: 30px;
    height: 30px;
}

.ai-name {
    font-weight: 600;
    font-size: 1.1em;
}

.message-content {
    width: 100%;
}

.message-text {
    line-height: 1.6;
    font-size: 1.05em;
}

.message-toolbar {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 15px;
}

.toolbar-button {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    transition: background-color 0.2s;
}

.toolbar-button:hover {
    background-color: var(--button-bg);
}

.suggestions-dropdown {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px 18px;
    border-radius: 15px;
    margin-top: 20px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    width: fit-content;
}

/* Area Input */
.input-area {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    background-color: var(--bg-primary);
}

.input-main {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--bg-secondary);
    border-radius: 30px;
    padding: 8px;
    max-width: 800px;
    margin: 0 auto;
}

.attach-button {
    background-color: var(--button-bg);
    border: none;
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 1.2em;
    cursor: pointer;
    flex-shrink: 0;
}

textarea#user-input {
    flex-grow: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1.1em;
    padding: 10px;
    resize: none;
    min-height: 28px;
    max-height: 200px;
    overflow-y: auto;
}

textarea#user-input::placeholder {
    color: var(--text-secondary);
}

.send-button {
    background-image: linear-gradient(to right, var(--accent-color-start), var(--accent-color-end));
    color: white;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s;
    font-size: 1.3em;
    flex-shrink: 0;
}
.send-button:hover {
    transform: scale(1.05);
}

/* Responsiveness */
@media (max-width: 768px) {
    .container {
        border-radius: 0;
    }
    .app-header, .input-area {
        padding: 15px;
    }
}