:root {
    --primary-color: #333333;
    --secondary-color: #ffffff;
    --accent-color: #555555;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #888888;
    --bubble-radius: 12px;
    --input-box-radius: 8px;
    --bg-color: #ffffff;
    --notification-red: #ff4444;
    --vision-blue: #3b82f6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    transition: all 0.3s ease;
}

body {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding-bottom: env(safe-area-inset-bottom);
}

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--secondary-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-size: 16px;
    color: var(--dark-gray);
    opacity: 0.8;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: relative;
}

.header {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--medium-gray);
    background-color: var(--secondary-color);
    z-index: 10;
}

.header-title {
    font-weight: 500;
    font-size: 18px;
    color: var(--primary-color);
    opacity: 0.8;
}

.header-button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: var(--primary-color);
    opacity: 0.7;
    padding: 8px 12px;
    border-radius: 8px;
}

.header-button:hover {
    background-color: var(--light-gray);
    opacity: 1;
}

.notification-button {
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: var(--primary-color);
    opacity: 0.7;
    padding: 8px;
    border-radius: 50%;
}

.notification-button:hover {
    background-color: var(--light-gray);
    opacity: 1;
}

.notification-indicator {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background-color: var(--notification-red);
    border-radius: 50%;
    display: block;
}

.notification-indicator.hidden {
    display: none;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    position: relative;
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    scroll-behavior: smooth;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
    position: relative;
    min-height: 100%;
    padding-bottom: 180px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: var(--bubble-radius);
    line-height: 1.5;
    opacity: 0.9;
    position: relative;
    transition: opacity 0.3s ease;
}

.message:hover {
    opacity: 1;
}

.user-message {
    align-self: flex-end;
    background-color: var(--accent-color);
    color: var(--secondary-color);
    border-bottom-right-radius: 5px;
    z-index: 2;
    position: relative;
}

.ai-message {
    align-self: flex-start;
    color: var(--primary-color);
    border-bottom-left-radius: 5px;
    background-color: transparent !important;
    box-shadow: none !important;
    padding: 5px 0 !important;
    border: none !important;
    max-width: 100% !important;
    width: 100%;
    margin-bottom: 20px;
    z-index: 2;
    position: relative;
}

/* Vision Model Indicator */
.vision-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    font-size: 11px;
    color: var(--vision-blue);
    margin-left: 8px;
    font-weight: 500;
}

.vision-indicator i {
    font-size: 10px;
}

.model-indicator {
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--vision-blue);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 500;
    white-space: nowrap;
    z-index: 3;
}

.user-message .model-indicator {
    background: var(--accent-color);
}

/* AI Message Actions */
.ai-message-content {
    position: relative;
    width: 100%;
    padding: 8px 0;
}

.ai-message-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.2s ease;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 4px 8px;
    border: 1px solid var(--medium-gray);
}

.ai-message:hover .ai-message-actions {
    opacity: 1;
}

.copy-ai-message {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 12px;
    color: var(--dark-gray);
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.copy-ai-message:hover {
    background: var(--light-gray);
    color: var(--primary-color);
}

.message-text {
    padding-right: 80px;
}

/* Container untuk blok kode */
.code-block-container {
    background: #1e293b;
    border-radius: 8px;
    margin: 15px 0;
    overflow: hidden;
    border: 1px solid #334155;
    max-width: 100%;
}

/* Header blok kode */
.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: #0f172a;
    border-bottom: 1px solid #334155;
}

.code-language {
    color: #94a3b8;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.copy-code-btn {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: background 0.2s;
}

.copy-code-btn:hover {
    background: #2563eb;
}

/* Blok kode */
.code-block {
    margin: 0;
    padding: 16px;
    background: #1e293b;
    overflow-x: auto;
    color: #e2e8f0;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.4;
    white-space: pre-wrap;
}

/* Kode inline */
.inline-code {
    background: #475569;
    color: #e2e8f0;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

/* Styling untuk teks biasa dalam pesan AI */
.ai-message p {
    margin-bottom: 12px;
    line-height: 1.6;
    color: var(--primary-color);
}

.ai-message ul, .ai-message ol {
    margin: 12px 0;
    padding-left: 24px;
}

.ai-message li {
    margin-bottom: 6px;
    line-height: 1.5;
}

.ai-message strong {
    color: var(--primary-color);
    font-weight: 600;
}

.ai-message em {
    color: var(--dark-gray);
    font-style: italic;
}

.ai-message a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
}

.ai-message a:hover {
    text-decoration: underline;
}

.ai-message blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 16px;
    margin: 12px 0;
    color: var(--dark-gray);
    font-style: italic;
}

/* Animasi untuk pesan */
.message-content strong {
    font-weight: 600;
}

.message-content em {
    font-style: italic;
}

.message-content code {
    font-family: 'Courier New', monospace;
    background-color: rgba(0,0,0,0.05);
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 0.9em;
}

.message-content pre code {
    display: block;
    padding: 10px;
    overflow-x: auto;
    background-color: rgba(0,0,0,0.05);
    border-radius: 5px;
}

.message-content ul {
    padding-left: 20px;
    margin: 5px 0;
}

.message-content li {
    margin-bottom: 3px;
}

.message-content a {
    color: var(--accent-color);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

.message-actions {
    position: absolute;
    top: -15px;
    right: 0;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.2s ease;
    background-color: var(--secondary-color);
    padding: 2px 5px;
    border-radius: 15px;
}

.ai-message:hover .message-actions {
    opacity: 1;
}

.message-action {
    background-color: var(--secondary-color);
    border: 1px solid var(--medium-gray);
    border-radius: 50%;
    width: 25px;
    height: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 12px;
    color: var(--dark-gray);
}

.message-action:hover {
    background-color: var(--light-gray);
    color: var(--primary-color);
}

/* PERBAIKAN: Typing indicator yang tidak ketutupan */
.typing-indicator {
    display: inline-flex;
    align-items: center;
    padding: 5px 0;
    background-color: transparent !important;
    border-radius: 0;
    margin-left: 5px;
    opacity: 0.7;
    position: relative;
    z-index: 2;
}

.typing-dot {
    width: 10px;
    height: 10px;
    margin: 0 3px;
    background-color: var(--dark-gray);
    border-radius: 50%;
    animation: typingAnimation 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
    animation-delay: 0s;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingAnimation {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-5px); }
}

.input-section {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(var(--bg-color-rgb), 0.95);
    backdrop-filter: blur(10px);
    padding: 20px;
    z-index: 100;
    width: 100%;
    box-sizing: border-box;
}

/* Tambahkan variabel RGB untuk opacity */
:root {
    --bg-color-rgb: 255, 255, 255;
    --medium-gray-rgb: 224, 224, 224;
}

.input-container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.input-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--light-gray);
    border-radius: var(--input-box-radius);
    padding: 12px 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 100%;
    border: none;
}

.message-input {
    flex: 1;
    border: none;
    background: none;
    outline: none;
    padding: 8px;
    font-size: 16px;
    color: var(--primary-color);
    opacity: 0.9;
    width: calc(100% - 60px);
    background-color: transparent;
}

.send-button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: var(--accent-color);
    padding: 8px;
    border-radius: 50%;
}

.send-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.attach-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: var(--accent-color);
    padding: 8px;
    border-radius: 50%;
    margin-right: 5px;
}

.attach-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.history-panel {
    position: fixed;
    top: 0;
    left: -300px;
    width: 300px;
    height: 100%;
    background-color: var(--secondary-color);
    border-right: 1px solid var(--medium-gray);
    padding: 20px;
    overflow-y: auto;
    z-index: 1000;
    transition: left 0.3s ease;
}

.history-panel.show {
    left: 0;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.history-title {
    font-size: 18px;
    font-weight: 500;
}

.close-history {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--primary-color);
    opacity: 0.7;
}

.history-item {
    position: relative;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
    cursor: pointer;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0.8;
    background-color: var(--light-gray);
    padding-right: 30px;
}

.history-item:hover {
    background-color: var(--medium-gray);
    opacity: 1;
}

.delete-history-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 12px;
    color: var(--dark-gray);
    padding: 4px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.2s ease, background-color 0.2s ease;
}

.history-item:hover .delete-history-btn {
    opacity: 1;
}

.delete-history-btn:hover {
    background-color: rgba(255, 0, 0, 0.1);
    color: #ff4444;
}

.empty-chat {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0.6;
    padding: 20px;
    width: 100%;
    max-width: 600px;
}

.empty-chat i {
    font-size: 50px;
    margin-bottom: 20px;
    color: var(--dark-gray);
}

.empty-chat p {
    max-width: 70%;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.typing-message {
    opacity: 0;
    animation: fadeIn 0.3s ease forwards;
}

#fileInput {
    display: none;
}

.image-upload-container {
    position: relative;
    margin-bottom: 15px;
    border-radius: var(--input-box-radius);
    overflow: hidden;
    max-width: 300px;
    max-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--light-gray);
    padding: 10px;
}

.image-upload-preview {
    max-width: 100%;
    max-height: 150px;
    border-radius: 5px;
    display: block;
}

.image-upload-info {
    font-size: 12px;
    color: var(--dark-gray);
    margin-top: 5px;
}

.image-upload-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.image-upload-cancel {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(0,0,0,0.7);
    color: white;
    border: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    width: 100%;
}

/* Notification System */
.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 300px;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification.success {
    border-left: 4px solid #4CAF50;
    background: rgba(76, 175, 80, 0.1);
    color: #2E7D32;
}

.notification.error {
    border-left: 4px solid #f44336;
    background: rgba(244, 67, 54, 0.1);
    color: #C62828;
}

.notification.info {
    border-left: 4px solid #2196F3;
    background: rgba(33, 150, 243, 0.1);
    color: #1565C0;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.notification-content i {
    font-size: 18px;
}

/* Responsive design */
@media (max-width: 768px) {
    .chat-container {
        padding: 15px;
        padding-bottom: 160px;
    }
    
    .message {
        max-width: 90%;
    }
    
    .input-section {
        padding: 15px;
    }
    
    .history-panel {
        width: 280px;
        left: -280px;
    }
    
    .code-block {
        font-size: 12px;
        padding: 12px;
    }
    
    .ai-message-actions {
        opacity: 1;
        background: rgba(255, 255, 255, 0.8);
    }
    
    .message-text {
        padding-right: 70px;
    }
    
    .notification {
        right: 15px;
        bottom: 15px;
        max-width: calc(100% - 30px);
    }
    
    .vision-indicator {
        font-size: 10px;
        padding: 3px 6px;
    }
}

/* Scrollbar styling */
.chat-container::-webkit-scrollbar {
    width: 6px;
}

.chat-container::-webkit-scrollbar-track {
    background: transparent;
}

.chat-container::-webkit-scrollbar-thumb {
    background: var(--medium-gray);
    border-radius: 3px;
}

.chat-container::-webkit-scrollbar-thumb:hover {
    background: var(--dark-gray);
}

/* Success states for copy buttons */
.copy-success {
    background: #10b981 !important;
    color: white !important;
}

.copy-success i {
    color: white !important;
}

/* Source references styling - HIDDEN */
.source-references {
    display: none;
}

/* Mobile optimizations */
@media (max-width: 480px) {
    .header {
        padding: 12px 15px;
    }
    
    .header-title {
        font-size: 16px;
    }
    
    .chat-container {
        padding: 10px;
        padding-bottom: 150px;
    }
    
    .message {
        max-width: 95%;
        padding: 10px 12px;
    }
    
    .input-section {
        padding: 12px;
    }
    
    .input-box {
        padding: 10px 12px;
    }
    
    .message-input {
        font-size: 14px;
    }
    
    .ai-message-actions {
        opacity: 1;
        padding: 3px 6px;
    }
    
    .message-text {
        padding-right: 60px;
    }
    
    .vision-indicator {
        font-size: 9px;
        padding: 2px 5px;
    }
}

/* Safe area support for newer iPhones */
@supports (padding: max(0px)) {
    .input-section {
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
        padding-bottom: max(20px, env(safe-area-inset-bottom));
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .ai-message-actions {
        border: 2px solid var(--primary-color);
    }
    
    .copy-ai-message:hover {
        border: 1px solid var(--primary-color);
    }
    
    .vision-indicator {
        border: 2px solid var(--vision-blue);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none;
        animation: none;
    }
    
    .loading-spinner {
        animation: none;
    }
    
    .typing-dot {
        animation: none;
    }
}