@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- Variabel Warna (Theme) --- */
:root {
    --bg-main: #f0f2f5;
    --bg-panel: #ffffff;
    --bg-chat: #E5DDD5;
    --bg-input: #ffffff;
    --border-color: #d1d7db;
    --text-primary: #111b21;
    --text-secondary: #54656f;
    --accent-primary: #008069;
    --accent-secondary: #00a884;
    --msg-sent-bg: #d9fdd3;
    --msg-received-bg: #ffffff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    --code-bg: #282c34;
    --code-text: #abb2bf;
}

body.dark-mode {
    --bg-main: #111b21;
    --bg-panel: #202c33;
    --bg-chat: #0b141a;
    --bg-input: #2a3942;
    --border-color: #2f3b44;
    --text-primary: #e9edef;
    --text-secondary: #8696a0;
    --accent-primary: #00a884;
    --accent-secondary: #008069;
    --msg-sent-bg: #005c4b;
    --msg-received-bg: #202c33;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    --code-bg: #1e1e1e;
    --code-text: #d4d4d4;
}

/* --- Reset & Global Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    transition: background-color 0.3s ease;
    overflow: hidden;
    /* Mencegah scroll di body */
}

.chat-app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-panel);
}

/* --- Sidebar --- */
.sidebar {
    width: 320px;
    /* Lebar fixed untuk desktop */
    flex-shrink: 0;
    /* Mencegah sidebar mengecil */
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    background-color: var(--bg-panel);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease;
    z-index: 100;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background-color: var(--bg-main);
    gap: 10px;
    /* Jarak antar elemen di header */
}

.sidebar-header .user-profile {
    flex-grow: 1;
    /* Biarkan nama profil memanjang */
}

.user-profile,
.chat-header-info {
    display: flex;
    align-items: center;
    color: var(--text-primary);
}

.profile-pic-container {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 15px;
    font-size: 20px;
    color: var(--bg-panel);
    flex-shrink: 0;
    /* Mencegah avatar menyusut */
}

.sidebar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-actions i,
.chat-header i.mobile-only {
    font-size: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s, transform 0.3s;
    padding: 5px;
    /* Tambahkan padding untuk area klik */
}

.sidebar-actions i:hover,
.chat-header i.mobile-only:hover {
    color: var(--accent-primary);
}

#theme-toggle:hover {
    transform: rotate(15deg);
}

/* --- Perbaikan: Sembunyikan ikon mobile-only secara default untuk desktop --- */
.mobile-only {
    display: none !important;
}

.new-chat-btn {
    background-color: var(--accent-primary);
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background-color 0.2s;
    white-space: nowrap;
    /* Mencegah teks tombol terpecah */
}

.new-chat-btn i {
    font-size: 16px;
    color: white;
}

.new-chat-btn:hover {
    background-color: var(--accent-secondary);
}

.chat-list {
    flex-grow: 1;
    overflow-y: auto;
}

.chat-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
    /* Diperlukan untuk tombol hapus */
}

.chat-item.active {
    background-color: var(--accent-secondary);
}

.chat-item.active .chat-name,
.chat-item.active .last-message {
    color: white;
}

.chat-item:not(.active):hover {
    background-color: var(--bg-main);
}

.chat-info {
    flex-grow: 1;
    overflow: hidden;
}

.chat-name {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.last-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --- Tombol Hapus Chat (Baru) --- */
.delete-chat-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    opacity: 0;
    /* Sembunyikan secara default */
    transition: opacity 0.2s, color 0.2s;
    padding: 5px;
}

.chat-item:hover .delete-chat-btn {
    opacity: 1;
    /* Tampilkan saat hover pada chat item */
}

.delete-chat-btn:hover {
    color: #f44336;
    /* Warna merah saat di-hover */
}

/* --- Main Chat --- */
.main-chat {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-chat);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px 16px;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
}

.chat-name-status {
    color: var(--text-primary);
}

.chat-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.chat-messages {
    flex-grow: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.welcome-message {
    text-align: center;
    margin: auto;
    color: var(--text-secondary);
}

.welcome-message h2 {
    color: var(--text-primary);
}

.message-wrapper {
    display: flex;
    align-items: flex-end;
    /* Menyelaraskan avatar dengan bagian bawah pesan */
    gap: 10px;
    max-width: 80%;
    animation: pop-in 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

@keyframes pop-in {
    0% {
        transform: translateY(10px) scale(0.95);
        opacity: 0;
    }

    100% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.chat-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    color: var(--bg-panel);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px;
    flex-shrink: 0;
    /* Mencegah avatar menyusut */
}

.message {
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.5;
    box-shadow: var(--shadow);
    position: relative;
    color: var(--text-primary);
    word-wrap: break-word;
    /* max-width diset di message-wrapper */
}

.message .content p {
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
    padding: 0;
}

.message-wrapper.sent {
    align-self: flex-end;
    /* Pesan terkirim ke kanan */
    flex-direction: row-reverse;
    /* Avatar di kanan */
}

.message-wrapper.received {
    align-self: flex-start;
    /* Pesan diterima di kiri */
}

.message-wrapper.sent .message {
    background-color: var(--msg-sent-bg);
}

.message-wrapper.received .message {
    background-color: var(--msg-received-bg);
}

.message-meta {
    float: right;
    clear: both;
    margin-top: 5px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.message .content img {
    max-width: 100%;
    border-radius: 6px;
    margin-top: 8px;
}

.content ul,
.content ol {
    padding-left: 20px;
    margin: 8px 0;
}

.content li {
    margin-bottom: 5px;
}

/* --- Code Blocks (Highlight.js) --- */
.content pre {
    position: relative;
    background-color: var(--code-bg);
    color: var(--code-text);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 10px 0;
    font-size: 0.9em;
}

.content code {
    font-family: 'Fira Code', 'Courier New', monospace;
}

.copy-code-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #ffffff20;
    border: none;
    color: white;
    padding: 5px 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8em;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.content pre:hover .copy-code-btn {
    opacity: 1;
}

/* --- Speaker Icon (TTS) --- */
.speaker-icon {
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s, transform 0.2s;
}

.speaker-icon:hover {
    color: var(--accent-primary);
    transform: scale(1.1);
}

.speaker-icon.playing {
    color: var(--accent-primary);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }

    100% {
        transform: scale(1);
    }
}

/* --- Typing Indicator --- */
#typing-indicator {
    margin-left: 15px;
    margin-bottom: 15px;
    max-width: 120px;
}

#typing-indicator .message {
    padding: 0;
    /* Hapus padding default di sini */
    background-color: var(--msg-received-bg);
    box-shadow: var(--shadow);
    /* Tambahkan shadow agar konsisten */
    border-radius: 8px;
    /* Pastikan border-radius diterapkan */
}

.typing-indicator-dots {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    /* Beri padding di sini agar bubble punya ukuran */
}

.typing-indicator-dots span {
    height: 8px;
    width: 8px;
    margin: 0 2px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    display: inline-block;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-indicator-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-indicator-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

.typing-indicator-dots span:nth-child(3) {
    animation-delay: 0s;
}

@keyframes bounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1.0);
    }
}

/* --- Input Area --- */
.chat-input-area {
    background-color: var(--bg-main);
    padding: 10px 16px;
    border-top: 1px solid var(--border-color);
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    /* Menyelaraskan input dengan tombol saat multi-baris */
    background-color: var(--bg-input);
    border-radius: 24px;
    /* Lebih bulat */
    padding: 5px;
}

#message-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    padding: 10px;
    font-size: 1rem;
    color: var(--text-primary);
    resize: none;
    /* Nonaktifkan resize manual */
    max-height: 120px;
    /* Batasi tinggi input */
    overflow-y: auto;
}

#message-input:focus {
    outline: none;
}

.input-action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 10px;
    transition: color 0.2s;
}

.input-action-btn:hover {
    color: var(--accent-primary);
}

.input-action-btn.send {
    color: var(--accent-primary);
}

/* --- Image Preview Dikecilkan --- */
.image-preview-container {
    position: relative;
    width: 60px;
    height: 60px;
    background: var(--bg-input);
    padding: 5px;
    border-radius: 8px;
    margin-bottom: 5px;
    /* Beri sedikit ruang dari input */
}

#image-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

.remove-image-btn {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #00000090;
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
}

/* --- Tampilan Responsif (Mobile) --- */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        transform: translateX(-100%);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        width: 85%;
        /* Lebar sidebar di mobile */
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-chat {
        width: 100%;
    }

    /* --- Perbaikan: Tampilkan ikon mobile-only hanya di mobile --- */
    .mobile-only {
        display: block !important;
    }

    .message-wrapper {
        max-width: 90%;
        /* Pesan di mobile bisa lebih lebar */
    }
}