* {
margin: 0;
padding: 0;
box-sizing: border-box;
}

:root {
--bg-primary: #f7f5f3;
--bg-secondary: #f8f9fa;
--bg-tertiary: #e9ecef;
--text-primary: #1f2937;
--text-secondary: #495057;
--text-tertiary: #1f2937;
--text-muted: #6c757d;
--accent-color: #b85c3e;
--accent-hover: #b86245;
--user-bubble: #dbd3c8;
--ai-bg: transparent;
--border-color: #e7e7e7;
--border-color-secondary: #1a1a1a;
--copy-btn-bg: #e9ecef;
--copy-btn-hover: #dee2e6;
--copy-btn-after: #dee2e6;
}

[data-theme="dark"] {
--bg-primary: #1a1a1a;
--bg-secondary: #2a2a2a;
--bg-tertiary: #6a6a6a;
--text-primary: #ffffff;
--text-secondary: #cccccc;
--text-tertiary: #1f2937;
--text-muted: #888888;
--accent-color: #b85c3e;
--accent-hover: #b86245;
--user-bubble: #6a6a6a;
--ai-bg: transparent;
--border-color: #3a3a3a;
--border-color-secondary: #cccccc;
--copy-btn-bg: #4a4a4a;
--copy-btn-hover: #5a5a5a;
--copy-btn-after: #5a5a5a;
}

body {
font-family: 'Inter', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
color: var(--text-primary);
min-height: 100vh;
display: flex;
flex-direction: column;
transition: all 0.1s ease;
background-color: var(--bg-primary);
}

/* Top Navigation Bar */
.top-nav {
height: 60px;
background: var(--bg-primary);
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 20px;
position: sticky;
top: 0;
z-index: 100;
}

.nav-left {
display: flex;
align-items: center;
}

.site-name {
color: var(--text-primary);
font-size: 24px;
font-weight: 700;
margin-left: 16px;
}

.nav-right {
display: flex;
align-items: center;
gap: 12px;
}

/* Articles Link, Top Nav Bar */
.nav-link {
color: var(--text-primary);
text-decoration: none;
font-size: 16px;
font-weight: 400;
margin-left: 24px;
padding: 8px 12px;
border-radius: 6px;
}

.nav-link:hover {
color: var(--accent-color);
}

/* Main PERANTAU CONNECT Link, Top Nav Bar */
.home-link {
color: var(--text-primary);
text-decoration: none;
padding: 8px 12px;
border-radius: 6px;
}

.home-link:hover {
color: var(--text-primary);
}

/* Theme Toggle */
.theme-toggle {
background: transparent;
border: none;
border-radius: 50%;
padding: 6px;
cursor: pointer;
display: flex;
align-items: center;
gap: 8px;
transition: all 0.1s ease;
position: relative;
}

.theme-toggle:hover {
background: var(--copy-btn-hover);
}

.theme-toggle:hover:after {
content: "Dark/Light Mode";
position: absolute;
top: 45px;
right: 0;
background: var(--bg-tertiary);
color: var(--text-primary);
padding: 6px 8px;
border-radius: 4px;
font-size: 12px;
white-space: nowrap;
z-index: 1000;
border: 1px solid var(--border-color);
}

.theme-icon {
width: 20px;
height: 20px;
color: var(--text-primary);
transition: all 0.1s ease;
}

/* Main Container */
.main-container {
flex: 1;
display: flex;
flex-direction: column;
max-width: 900px;
margin: 0 auto;
width: 100%;
position: relative;
}

/* Chat Interface */
.chat-interface {
flex: 1;
display: flex;
flex-direction: column;
transition: all 0.1s ease;
}

.welcome-section {
flex: 0;
display: flex;
flex-direction: column;
align-items: center;
justify-content: flex-end;
padding: 20px;
text-align: center;
}

.welcome-text {
font-size: 48px;
font-weight: 700;
color: var(--text-primary);
margin-bottom: 20px;
line-height: 1.3;
}

/* Chat Messages Area */
.chat-messages {
flex: 1;
overflow-y: auto;
padding: 40px;
display: none;
}

.chat-messages.visible {
display: block;
}

.message-group {
margin-bottom: 10px;
width: 100%;
}

/* User Messages */
.user-message {
display: flex;
justify-content: flex-end;
margin-bottom: 8px;
}

.user-bubble {
background: var(--user-bubble);
color: var(--text-primary);
padding: 12px 18px;
border-radius: 18px 18px 4px 18px;
max-width: 70%;
word-wrap: break-word;
position: relative;
font-weight: 450;
}

/* AI Messages */
.ai-message {
background: var(--ai-bg);
color: var(--text-primary);
padding: 5px 0;
width: 100%;
position: relative;
}

.ai-content {
line-height: 1.6;
font-size: 16px;
}

/* AI Response Formatting */
.ai-content h1 {
font-size: 24px;
font-weight: 700;
color: var(--text-primary);
margin: 24px 0 16px 0;
border-bottom: 2px solid var(--border-color);
padding-bottom: 8px;
}

.ai-content h1:first-child {
margin-top: 0;
}

.ai-content h2 {
font-size: 20px;
font-weight: 600;
color: var(--text-primary);
margin: 20px 0 12px 0;
}

.ai-content h3 {
font-size: 18px;
font-weight: 600;
color: var(--text-secondary);
margin: 16px 0 8px 0;
}

.ai-content p {
margin: 12px 0;
color: var(--text-primary);
}

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

.ai-content li {
margin: 6px 0;
color: var(--text-primary);
}

.ai-content blockquote {
border-left: 4px solid var(--accent-color);
margin: 16px 0;
padding: 12px 16px;
background: var(--bg-secondary);
border-radius: 4px;
font-style: italic;
}

.ai-content code {
background: var(--bg-secondary);
padding: 2px 6px;
border-radius: 4px;
font-family: 'Monaco', 'Menlo', monospace;
font-size: 14px;
}

.ai-content a {
color: var(--accent-color);
text-decoration: underline;
}

.ai-content a:hover {
color: var(--accent-hover);
}

/* Copy Button */
.copy-button {
background: transparent;
border: 0px solid var(--border-color);
border-radius: 6px;
padding: 0px 0px;
cursor: pointer;
font-size: 12px;
color: var(--text-secondary);
transition: all 0.1s ease;
display: flex;
align-items: center;
gap: 4px;
margin-top: 8px;
margin-left: auto;
width: fit-content;
opacity: 0;
}

.message-group:hover .copy-button {
opacity: 1;
}

.copy-button:hover {
background: transparent;
color: var(--text-primary);
}

.copy-button.copied {
background: transparent;
color: var(--copy-btn-hover);
}

/* Disclaimer */
.disclaimer {
padding: 6px 0;
background: transparent;
text-align: center;
margin-top: 6px;
}

.disclaimer-content {
display: flex;
align-items: center;
justify-content: center;
gap: 8px;
}

.disclaimer-text {
color: var(--text-muted);
font-size: 13px;
line-height: 1.5;
}

/* Feedback Buttons */
.feedback-buttons {
display: flex;
gap: 8px;
margin-top: 2px;
opacity: 0;
transition: opacity 0.1s ease;
}

.message-group:hover .feedback-buttons {
opacity: 1;
}

.feedback-btn {
background: transparent;
border: 0px solid var(--border-color);
border-radius: 6px;
padding: 2px 6px;
cursor: pointer;
font-size: 12px;
color: var(--text-secondary);
transition: all 0.1s ease;
display: flex;
align-items: center;
gap: 4px;
}

.feedback-btn:hover {
background: transparent;
color: var(--text-primary);
}

.feedback-btn.selected {
background: var(--copy-btn-after);
color: white;
}

/* Thinking Animation */
.thinking-message {
background: var(--ai-bg);
padding: 20px 0;
width: 100%;
}

.thinking-bubble {
display: flex;
align-items: center;
gap: 8px;
color: var(--text-secondary);
}

.thinking-dots {
display: flex;
gap: 4px;
}

.thinking-dots span {
width: 6px;
height: 6px;
background: var(--text-muted);
border-radius: 50%;
animation: thinking 1.4s infinite ease-in-out;
}

.thinking-dots span:nth-child(1) { animation-delay: -0.32s; }
.thinking-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes thinking {
0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
40% { transform: scale(1); opacity: 1; }
}

.chat-input-container {
/* Remove: position: sticky, bottom: auto, margin: 20% auto auto auto, min-height: 100% */
background: var(--bg-primary);
padding: 20px;
z-index: 50;
transition: all 0.1s ease;
display: flex;
align-items: center;
justify-content: center; /* centers horizontally too */
height: 90vh;
}

.chat-input-container.chat-started {
position: sticky;
min-height: auto;
align-items: stretch;
bottom: 0;
flex: none;
height: auto;
}

.input-wrapper {
width: 100%;
max-width: 900px;
margin: 0 auto;
}

.input-container {
display: flex;
background: var(--bg-secondary);
border-radius: 24px;
padding: 4px;
border: 1px solid var(--border-color);
transition: all 0.1s ease;
margin-bottom: 8px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.10);
}

.input-container:focus-within {
border-color: var(--accent-color);
}

.chat-input {
flex: 1;
background: transparent;
border: none;
padding: 16px 20px;
color: var(--text-primary);
font-size: 16px;
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
outline: none;
resize: none;
min-height: 24px;
max-height: 120px;
transition: all 0.1s ease;
}

.chat-input::placeholder {
color: var(--text-muted);
}

.send-button {
background: var(--accent-color);
border: none;
border-radius: 20px;
width: 40px;
height: 40px;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: background-color 0.1s ease;
margin: 4px;
}

.send-button:hover {
background: var(--accent-hover);
}

.send-button:disabled {
background: var(--text-muted);
cursor: not-allowed;
}

.send-button svg {
width: 20px;
height: 20px;
fill: white;
}

/* Template Categories */
.template-categories {
display: flex;
flex-direction: column;
gap: 16px;
margin-bottom: 0;
position: relative;
}

.template-categories.hidden {
display: none;
}

.category-container {
position: relative;
}

.category-buttons {
display: flex;
justify-content: center;
gap: 8px;
margin-bottom: 16px;
flex-wrap: wrap;
}

.category-btn {
background: transparent;
border: 1px solid var(--border-color-secondary);
color: var(--text-primary);
padding: 10px 16px;
border-radius: 20px;
cursor: pointer;
transition: all 0.2s ease;
font-size: 13px;
font-weight: 500;
text-align: center;
position: relative;
display: flex;
align-items: center;
justify-content: center;
gap: 6px;
white-space: nowrap;
}

.category-btn:hover {
background: var(--bg-tertiary);
border-color: var(--copy-btn-hover);
transform: translateY(-1px);
}

.category-btn.active {
background: var(--accent-color);
border-color: var(--bg-secondary);
color: white;
}

.category-icon {
width: 16px;
height: 16px;
opacity: 0.8;
}

/* Sample Questions */
.sample-questions {
display: flex;
flex-direction: column;
gap: 8px;
opacity: 0;
visibility: hidden;
transform: translateY(0);
transition: all 0.2s ease;
margin-bottom: 0;
max-height: 0;
overflow: hidden;
}

.sample-questions.visible {
opacity: 1;
visibility: visible;
transform: translateY(-10px);
margin-top: 1.5rem;
max-height: 300px;
}

.sample-question-btn {
display: block;
width: 70%;
background: transparent;
border: 1px solid var(--border-color);
color: var(--text-secondary);
padding: 14px 20px;
border-radius: 20px;
cursor: pointer;
transition: all 0.2s ease;
font-size: 14px;
text-align: left;
margin: 0 auto 5px auto;
}

.sample-question-btn:hover {
background: var(--copy-btn-hover);
border-color: var(--copy-btn-hover);
color: var(--text-primary);
transform: translateY(-1px);
}

/* Reset Button */
.reset-button {
background: transparent;
border: none;
border-radius: 50%;
padding: 6px;
cursor: pointer;
display: flex;
align-items: center;
gap: 8px;
transition: all 0.1s ease;
position: relative;
}

.reset-button:hover:after {
content: "New Session";
position: absolute;
top: 45px;
right: 0;
transform: none;
background: var(--bg-tertiary);
color: var(--text-primary);
padding: 6px 6px;
border-radius: 4px;
font-size: 12px;
white-space: nowrap;
z-index: 1000;
border: 1px solid var(--border-color);
}

.reset-button:hover {
background: var(--copy-btn-hover);
color: var(--text-primary);
}

/* Bottom Button Container */
.bottom-buttons {
display: flex;
justify-content: center;
align-items: center;
gap: 8px;
margin-bottom: 8px;
}

/* Info Button */
.info-button {
background: transparent;
border: none;
border-radius: 50%;
padding: 8px;
color: var(--text-secondary);
cursor: pointer;
transition: all 0.1s ease;
display: flex;
align-items: center;
gap: 6px;
position: relative;
}

.info-button:hover {
background: var(--copy-btn-hover);
color: var(--text-primary);
}

.info-button:hover:after {
content: "FAQ";
position: absolute;
top: -35px;
left: 50%;
transform: translateX(-50%);
background: var(--bg-tertiary);
color: var(--text-primary);
padding: 6px 8px;
border-radius: 4px;
font-size: 12px;
white-space: nowrap;
z-index: 1000;
border: 1px solid var(--border-color);
}

/* Feedback Button */
.feedback-button-container {
position: relative;
}

.feedback-btn-main {
background: transparent;
border: none;
border-radius: 50%;
padding: 8px;
color: var(--text-secondary);
cursor: pointer;
transition: all 0.1s ease;
display: flex;
align-items: center;
gap: 6px;
}

.feedback-btn-main:hover {
background: var(--copy-btn-hover);
color: var(--text-primary);
}

.feedback-btn-main:hover:after {
content: "Send Feedback";
position: absolute;
top: -35px;
left: 50%;
transform: translateX(-50%);
background: var(--bg-tertiary);
color: var(--text-primary);
padding: 6px 8px;
border-radius: 4px;
font-size: 12px;
white-space: nowrap;
z-index: 1000;
border: 1px solid var(--border-color);
}

/* FAQ Popup */
.faq-popup {
position: absolute;
bottom: 100%;
left: 50%;
transform: translateX(-50%);
background: var(--bg-secondary);
border: 1px solid var(--border-color);
border-radius: 12px;
padding: 20px;
width: 320px;
box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
z-index: 1000;
margin-bottom: 10px;
display: none;
}

.faq-popup.show {
display: block;
}

.faq-popup h3 {
font-size: 16px;
font-weight: 600;
margin-bottom: 12px;
color: var(--text-primary);
}

.faq-item {
margin-bottom: 12px;
}

.faq-item strong {
color: var(--text-primary);
font-weight: 600;
}

.faq-item p {
color: var(--text-secondary);
font-size: 14px;
line-height: 1.4;
margin-top: 4px;
}

/* Modal Styles */
.modal-overlay {
display: none;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.8);
z-index: 1000;
justify-content: center;
align-items: center;
}

.modal-content {
background: var(--bg-secondary);
border-radius: 16px;
padding: 30px;
max-width: 450px;
width: 90%;
border: 1px solid var(--border-color);
}

.modal-title {
font-size: 24px;
font-weight: 600;
color: var(--text-primary);
margin-bottom: 20px;
text-align: center;
}

.modal-subtitle {
color: var(--text-secondary);
margin-bottom: 25px;
text-align: center;
line-height: 1.4;
}

.form-group {
margin-bottom: 20px;
}

.form-label {
display: block;
color: var(--text-primary);
margin-bottom: 8px;
font-weight: 500;
}

.form-input, .form-textarea {
width: 100%;
background: var(--bg-primary);
border: 2px solid var(--border-color);
border-radius: 8px;
padding: 12px 16px;
color: var(--text-primary);
font-size: 16px;
outline: none;
transition: border-color 0.1s ease;
}

.form-input:focus, .form-textarea:focus {
border-color: var(--accent-color);
}

.form-input::placeholder, .form-textarea::placeholder {
color: var(--text-muted);
}

.form-textarea {
resize: vertical;
min-height: 120px;
font-family: inherit;
}

.modal-button {
width: 100%;
background: var(--accent-color);
border: none;
border-radius: 8px;
padding: 12px 24px;
color: white;
font-size: 16px;
font-weight: 600;
cursor: pointer;
transition: background-color 0.1s ease;
margin-bottom: 10px;
}

.modal-button:hover {
background: var(--accent-hover);
}

.modal-button:disabled {
background: var(--text-muted);
cursor: not-allowed;
}

.modal-button.secondary {
background: var(--copy-btn-bg);
color: var(--text-primary);
}

.modal-button.secondary:hover {
background: var(--copy-btn-hover);
}

/* Character Counter */
.character-counter {
text-align: right;
font-size: 12px;
color: var(--text-muted);
margin-top: 5px;
}

.character-counter.warning {
color: #ff6b35;
}

/* Checkbox */
.checkbox-group {
display: flex;
align-items: flex-start;
gap: 12px;
margin-bottom: 25px;
}

.checkbox-input {
margin-top: 2px;
width: 18px;
height: 18px;
accent-color: var(--accent-color);
}

.checkbox-label {
color: var(--text-secondary);
font-size: 14px;
line-height: 1.4;
cursor: pointer;
}

/* Mobile Menu Styles */
.mobile-only {
    display: none;
}

.desktop-only {
    display: block;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 999;
    display: none;
    justify-content: center;
    align-items: center;
}

.mobile-menu-overlay.show {
    display: flex;
}

.mobile-menu {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-width: 200px;
}

.mobile-nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    text-align: center;
    padding: 12px;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.mobile-nav-link:hover {
    background: var(--bg-tertiary);
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    border-radius: 50%;
    padding: 6px;
    cursor: pointer;
    align-items: center;
    gap: 8px;
    transition: all 0.1s ease;
    position: relative;
}

.menu-icon {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
}

/* Floating Feedback Button */
.floating-feedback {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(184, 92, 62, 0.3);
    transition: all 0.2s ease;
    z-index: 999;
    color: white;
}

.floating-feedback:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(184, 92, 62, 0.4);
}

@media (max-width: 768px) {
    .floating-feedback {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    
    .floating-feedback svg {
        width: 16px;
        height: 16px;
    }

    .chat-input::placeholder {
        color: transparent;
    }

    .top-nav {
        padding: 0 15px;
    }

    .site-name {
        font-size: 16px;
    }

    .welcome-text {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .chat-messages {
        padding: 10px;
    }

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

    .user-bubble {
        max-width: 85%;
    }

    .ai-content h1 {
        font-size: 20px;
    }

    .ai-content h2 {
        font-size: 18px;
    }

    .category-buttons {
        flex-direction: column;
        align-items: center;
    }

    .category-btn {
        padding: 12px 16px;
        width: 100%;
        max-width: 200px;
    }

    .sample-question-btn {
        padding: 12px 16px;
        font-size: 13px;
    }

    .faq-popup {
        width: 280px;
    }

    .mobile-only {
            display: block;
        }
        
    .desktop-only {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
        background: transparent;
        border: none;
        border-radius: 50%;
        padding: 6px;
        cursor: pointer;
        align-items: center;
        gap: 8px;
        transition: all 0.1s ease;
        position: relative;
    }

    .nav-link {
        display: none;
    }

    .nav-link:hover {
        display: none;
    }
}