/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Based on your Kotlin theme */
    --dark-maroon: #330000;
    --pale-cream: #FFCC99;
    --primary-gold: #CC9900;
    --primary-gold-dark: #664D00;
    --muted-yellow: #DDDD99;
    --tertiary-maroon: #993333;
    --surface-maroon: #401A1A;
    --surface-variant: #593333;
    --outline-maroon: #804D4D;
    --error-red: #FF4444;
    --success-green: #4CAF50;
    --disabled-content: #AA8888;
    --divider-soft: rgba(128, 77, 77, 0.5);
    --focus-glow: rgba(204, 153, 0, 0.3);
    --ripple-color: rgba(204, 153, 0, 0.16);
    --selection-color: rgba(204, 153, 0, 0.25);
    --shadow-color: rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--dark-maroon);
    color: var(--pale-cream);
    overflow: hidden;
}

.hidden {
    display: none !important;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Tab Bar */
.tab-bar {
    display: flex;
    align-items: center;
    background-color: var(--surface-maroon);
    border-bottom: 1px solid var(--outline-maroon);
    padding: 8px 12px;
    gap: 12px;
    min-height: 50px;
}

.tabs-container {
    display: flex;
    gap: 8px;
    flex: 1;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--outline-maroon) var(--surface-maroon);
}

.tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--surface-variant);
    border: 1px solid var(--outline-maroon);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    min-width: 150px;
    max-width: 200px;
}

.tab:hover {
    background-color: var(--tertiary-maroon);
    border-color: var(--primary-gold);
    box-shadow: 0 0 8px var(--focus-glow);
}

.tab.active {
    background-color: var(--primary-gold-dark);
    border-color: var(--primary-gold);
}

.tab-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 14px;
    color: var(--pale-cream);
}

.tab-close {
    background: none;
    border: none;
    color: var(--pale-cream);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.tab-close:hover {
    background-color: var(--error-red);
    color: white;
}

.btn-add-tab {
    padding: 8px 12px;
    background-color: var(--primary-gold);
    border: none;
    border-radius: 8px;
    color: var(--dark-maroon);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-weight: 600;
}

.btn-add-tab:hover {
    background-color: var(--pale-cream);
    box-shadow: 0 0 12px var(--focus-glow);
    transform: scale(1.05);
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* Tab Content */
.tab-content {
    display: none;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    padding: 48px;
    background-color: var(--dark-maroon);
}

.tab-content.active {
    display: block;
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 64px;
    padding: 48px 0;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    color: var(--primary-gold);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-logo {
    max-width: 500px;
    width: 100%;
    height: auto;
    margin: 0 auto 24px;
    display: block;
    /* filter: drop-shadow(0 0 20px rgba(204, 153, 0, 0.3)); */
    transition: all 0.3s ease;
}

.hero-subtitle {
    font-size: 28px;
    color: var(--muted-yellow);
    margin-bottom: 24px;
    font-weight: 600;
}

.hero-description {
    font-size: 18px;
    color: var(--pale-cream);
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.feature-card {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    box-shadow: 0 8px 24px var(--shadow-color), 0 0 40px rgba(204, 153, 0, 0.1);
    transform: translateY(-4px);
}

.feature-card svg {
    color: var(--primary-gold);
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    color: var(--pale-cream);
    margin-bottom: 12px;
    font-weight: 600;
}

.feature-card p {
    font-size: 14px;
    color: var(--muted-yellow);
    line-height: 1.6;
}

/* Download Section */
.download-section {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 16px;
    padding: 48px;
    text-align: center;
}

.download-title {
    font-size: 36px;
    color: var(--pale-cream);
    margin-bottom: 12px;
    font-weight: 700;
}

.download-subtitle {
    font-size: 18px;
    color: var(--muted-yellow);
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 600px;
    margin: 0 auto 32px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 32px;
    background-color: var(--surface-variant);
    border: 2px solid var(--outline-maroon);
    border-radius: 12px;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    position: relative;
    overflow: hidden;
}

.download-btn:hover {
    background-color: var(--primary-gold-dark);
    box-shadow: 0 4px 16px var(--focus-glow), 0 0 50px rgba(204, 153, 0, 0.15);
    transform: translateX(8px);
}

.download-btn svg {
    flex-shrink: 0;
}

.download-btn.windows svg {
    color: #00A4EF;
}

.download-btn.macos svg {
    color: var(--pale-cream);
}

.download-btn.linux svg {
    color: #FCC624;
}

.download-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.download-info .platform {
    font-size: 20px;
    font-weight: 600;
    color: var(--pale-cream);
    margin-bottom: 4px;
}

.download-info .file-info {
    font-size: 14px;
    color: var(--muted-yellow);
}

.version-info {
    font-size: 14px;
    color: var(--disabled-content);
    margin-top: 32px;
}

/* Coming Soon Section */
.coming-soon-section {
    margin-top: 48px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(51, 0, 0, 0.6), rgba(204, 153, 0, 0.1));
    border: 1px solid var(--primary-gold);
    border-radius: 16px;
    text-align: center;
}

.coming-soon-section h3 {
    font-size: 28px;
    color: var(--primary-gold);
    margin-bottom: 24px;
    font-weight: 600;
}

.coming-soon-platforms {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.platform-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 32px;
    background-color: var(--surface-maroon);
    border: 2px solid var(--outline-maroon);
    border-radius: 12px;
    transition: all 0.3s ease;
    min-width: 140px;
    position: relative;
    overflow: hidden;
}

.platform-badge::before {
    content: 'SOON';
    position: absolute;
    top: 8px;
    right: -25px;
    background: linear-gradient(135deg, var(--primary-gold), #FFD700);
    color: var(--dark-maroon);
    font-size: 10px;
    font-weight: 700;
    padding: 4px 30px;
    transform: rotate(45deg);
    letter-spacing: 1px;
}

.platform-badge:hover {
    border-color: var(--primary-gold);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(204, 153, 0, 0.3);
}

.platform-badge svg {
    width: 48px;
    height: 48px;
    color: var(--primary-gold);
}

.platform-badge span {
    font-size: 16px;
    font-weight: 600;
    color: var(--pale-cream);
}

.kmp-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
    color: var(--muted-yellow);
    background-color: rgba(0, 0, 0, 0.3);
    padding: 16px 24px;
    border-radius: 8px;
    margin-top: 24px;
    line-height: 1.6;
}

.kmp-info svg {
    flex-shrink: 0;
    color: var(--primary-gold);
}

.kmp-info strong {
    color: var(--primary-gold);
    font-weight: 600;
}

/* About Section */
.about-hero {
    text-align: center;
    margin-bottom: 64px;
    padding: 48px 0;
}

.about-title {
    font-size: 56px;
    font-weight: 700;
    color: var(--primary-gold);
    margin-bottom: 16px;
}

.about-subtitle {
    font-size: 24px;
    color: var(--muted-yellow);
    font-weight: 600;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.about-section h2,
.team-section h2,
.tech-section h2,
.contact-section h2 {
    font-size: 32px;
    color: var(--primary-gold);
    margin-bottom: 20px;
    font-weight: 700;
}

.about-section p {
    font-size: 16px;
    color: var(--pale-cream);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-section strong {
    color: var(--primary-gold);
    font-weight: 600;
}

/* Team Section */
.team-intro {
    font-size: 18px;
    color: var(--muted-yellow);
    margin-bottom: 32px;
    font-weight: 600;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.team-card {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.team-card:hover {
    box-shadow: 0 8px 24px var(--shadow-color), 0 0 40px rgba(204, 153, 0, 0.1);
    transform: translateY(-4px);
}

.team-avatar {
    width: 80px;
    height: 80px;
    background-color: var(--primary-gold-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.team-avatar svg {
    color: var(--primary-gold);
}

.team-card h3 {
    font-size: 22px;
    color: var(--pale-cream);
    margin-bottom: 8px;
    font-weight: 600;
}

.team-card .role {
    font-size: 14px;
    color: var(--primary-gold);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.team-card .bio {
    font-size: 14px;
    color: var(--muted-yellow);
    line-height: 1.6;
}

/* Features List */
.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item:hover {
    transform: translateX(4px);
    box-shadow: 0 0 30px rgba(204, 153, 0, 0.08);
}

.feature-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.feature-item strong {
    display: block;
    color: var(--pale-cream);
    font-size: 16px;
    margin-bottom: 6px;
}

.feature-item p {
    font-size: 14px;
    color: var(--muted-yellow);
    line-height: 1.5;
    margin: 0;
}

/* Tech Section */
.tech-categories {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.tech-category h3 {
    font-size: 20px;
    color: var(--primary-gold);
    margin-bottom: 16px;
    font-weight: 600;
    border-bottom: 2px solid var(--outline-maroon);
    padding-bottom: 8px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.tech-item {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
}

.tech-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color), 0 0 30px rgba(204, 153, 0, 0.08);
}

.tech-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--pale-cream);
}

.tech-desc {
    font-size: 13px;
    color: var(--muted-yellow);
}

/* Contact Section */
.contact-section p {
    font-size: 16px;
    color: var(--pale-cream);
    line-height: 1.8;
    margin-bottom: 16px;
}

.contact-info {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 12px;
    padding: 24px;
    margin-top: 24px;
}

.contact-info p {
    margin-bottom: 12px;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

.contact-info strong {
    color: var(--primary-gold);
}

/* Left Sidebar */
.left-sidebar {
    width: 280px;
    background-color: var(--surface-maroon);
    border-right: 1px solid var(--outline-maroon);
    display: flex;
    flex-direction: column;
}

.sidebar-tabs {
    display: flex;
    background-color: var(--dark-maroon);
    border-bottom: 1px solid var(--outline-maroon);
}

.sidebar-tab {
    flex: 1;
    padding: 12px 8px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--disabled-content);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    transition: all 0.2s ease;
}

.sidebar-tab:hover {
    color: var(--pale-cream);
    background-color: var(--surface-variant);
}

.sidebar-tab.active {
    color: var(--primary-gold);
    border-bottom-color: var(--primary-gold);
    background-color: var(--surface-maroon);
}

.sidebar-content {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.sidebar-view {
    display: none;
    height: 100%;
    overflow-y: auto;
    padding: 12px;
}

.sidebar-view.active {
    display: block;
}

/* Thumbnails */
.thumbnails-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.thumbnail-item {
    position: relative;
    background-color: var(--surface-variant);
    border: 2px solid transparent;
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.thumbnail-item:hover {
    border-color: var(--primary-gold);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.thumbnail-item.active {
    border-color: var(--primary-gold);
    background-color: var(--primary-gold-dark);
}

.thumbnail-canvas {
    width: 100%;
    border-radius: 4px;
    background-color: white;
}

.thumbnail-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
}

.thumbnail-page-num {
    font-size: 12px;
    color: var(--muted-yellow);
}

.thumbnail-bookmark {
    color: var(--primary-gold);
}

/* Table of Contents */
.toc-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toc-item {
    padding: 8px 12px;
    background-color: var(--surface-variant);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 13px;
}

.toc-item:hover {
    background-color: var(--tertiary-maroon);
    color: var(--primary-gold);
}

.toc-item-level-1 {
    margin-left: 0;
}

.toc-item-level-2 {
    margin-left: 16px;
    font-size: 12px;
}

.toc-item-level-3 {
    margin-left: 32px;
    font-size: 11px;
}

/* Bookmarks */
.bookmarks-header {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-bottom: 12px;
}

.bookmarks-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bookmark-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    background-color: var(--surface-variant);
    border-radius: 6px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.bookmark-item:hover {
    border-color: var(--primary-gold);
    background-color: var(--tertiary-maroon);
}

.bookmark-info {
    flex: 1;
    cursor: pointer;
}

.bookmark-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--pale-cream);
    margin-bottom: 4px;
}

.bookmark-page {
    font-size: 11px;
    color: var(--muted-yellow);
}

.bookmark-delete {
    background: none;
    border: none;
    color: var(--disabled-content);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.bookmark-delete:hover {
    background-color: var(--error-red);
    color: white;
}

/* Empty State */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
    color: var(--disabled-content);
    font-size: 13px;
    text-align: center;
}

/* PDF Display */
.pdf-display {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--dark-maroon);
    position: relative;
}

/* Welcome Screen */
.welcome-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 24px;
}

.welcome-card {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 20px;
    padding: 48px 32px;
    text-align: center;
    max-width: 460px;
    box-shadow: 0 4px 16px var(--shadow-color);
}

.welcome-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-gold);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.welcome-subtitle {
    font-size: 18px;
    color: var(--muted-yellow);
    margin-bottom: 32px;
}

/* PDF Viewer */
.pdf-viewer {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pdf-toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background-color: var(--surface-maroon);
    border-bottom: 1px solid var(--outline-maroon);
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.zoom-level {
    padding: 6px 12px;
    background-color: var(--surface-variant);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--muted-yellow);
    min-width: 60px;
    text-align: center;
}

.page-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-input {
    width: 50px;
    padding: 6px 8px;
    background-color: var(--surface-variant);
    border: 1px solid var(--outline-maroon);
    border-radius: 6px;
    color: var(--pale-cream);
    font-size: 13px;
    text-align: center;
}

.page-input:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 2px var(--focus-glow);
}

.page-total {
    font-size: 13px;
    color: var(--muted-yellow);
}

/* Canvas Container */
.canvas-container {
    flex: 1;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background-color: #2a2a2a;
}

#pdfCanvas {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
    background-color: white;
    max-width: 100%;
    max-height: 100%;
}

/* Right Sidebar - AI Chat */
.right-sidebar {
    width: 380px;
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 12px;
    margin: 12px;
    margin-left: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.ai-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--outline-maroon);
    background-color: var(--surface-maroon);
}

.ai-chat-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--pale-cream);
}

.ai-header-actions {
    display: flex;
    gap: 8px;
}

/* Error Banner */
.ai-error-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    margin: 8px 12px;
    background-color: var(--surface-maroon);
    border: 1px solid var(--error-red);
    border-radius: 10px;
    gap: 12px;
}

.ai-error-banner.hidden {
    display: none;
}

.ai-error-content {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.ai-error-content svg {
    color: var(--error-red);
    flex-shrink: 0;
}

#aiErrorText {
    font-size: 13px;
    color: var(--pale-cream);
    line-height: 1.4;
}

.btn-icon-small {
    background: none;
    border: none;
    padding: 4px;
    color: var(--disabled-content);
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-icon-small:hover {
    background-color: var(--surface-variant);
    color: var(--pale-cream);
}

/* Chat Messages Area */
.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}

.ai-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px 24px;
    color: var(--disabled-content);
    height: 100%;
}

.ai-welcome svg {
    margin-bottom: 16px;
    color: var(--primary-gold);
    opacity: 0.6;
}

.ai-welcome p {
    font-size: 14px;
    line-height: 1.5;
}

/* Message Bubbles */
.ai-message {
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.6;
    max-width: 85%;
    word-wrap: break-word;
    border: 1px solid transparent;
    position: relative;
}

.ai-message.user {
    background-color: var(--surface-maroon);
    border-color: var(--primary-gold);
    color: var(--pale-cream);
    align-self: flex-end;
    border-bottom-right-radius: 2px;
    margin-left: auto;
}

.ai-message.assistant {
    background-color: var(--surface-maroon);
    border-color: var(--outline-maroon);
    color: var(--pale-cream);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}

/* Markdown Styling in Messages */
.ai-message p {
    margin: 0 0 8px 0;
}

.ai-message p:last-child {
    margin-bottom: 0;
}

.ai-message code {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    font-family: 'Courier New', monospace;
}

.ai-message pre {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 8px 0;
}

.ai-message pre code {
    background: none;
    padding: 0;
}

.ai-message ul, .ai-message ol {
    margin: 8px 0;
    padding-left: 24px;
}

.ai-message li {
    margin: 4px 0;
}

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

.ai-message a {
    color: var(--primary-gold);
    text-decoration: none;
    border-bottom: 1px solid var(--primary-gold);
}

.ai-message a:hover {
    color: var(--pale-cream);
    border-bottom-color: var(--pale-cream);
}

/* Typing Indicator */
.ai-typing-indicator {
    display: flex;
    align-items: center;
    padding: 12px 14px;
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 14px;
    border-bottom-left-radius: 2px;
    max-width: fit-content;
    gap: 10px;
}

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

.ai-typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-gold);
    border-radius: 50%;
    animation: typing-bounce 1.4s ease-in-out infinite;
}

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

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

@keyframes typing-bounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-8px);
        opacity: 1;
    }
}

.ai-typing-text {
    font-size: 13px;
    color: var(--muted-yellow);
}

/* Jump to Bottom Button */
.btn-jump-bottom {
    position: absolute;
    bottom: 90px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    color: var(--pale-cream);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
    z-index: 10;
}

.btn-jump-bottom:hover {
    background-color: var(--primary-gold);
    border-color: var(--primary-gold);
    color: var(--dark-maroon);
    transform: scale(1.05);
}

.btn-jump-bottom.hidden {
    display: none;
}

/* Input Container */
.ai-input-container {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--outline-maroon);
    background-color: var(--surface-maroon);
    align-items: flex-end;
}

.ai-input {
    flex: 1;
    padding: 10px 12px;
    background-color: var(--surface-variant);
    border: 1px solid var(--outline-maroon);
    border-radius: 8px;
    color: var(--pale-cream);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    min-height: 40px;
    max-height: 160px;
    line-height: 1.5;
    overflow-y: auto;
}

.ai-input:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 2px var(--focus-glow);
}

.ai-input::placeholder {
    color: var(--disabled-content);
}

/* Loading Spinner */
.ai-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--outline-maroon);
    border-top-color: var(--primary-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Buttons */
.btn-icon {
    background: none;
    border: 1px solid var(--outline-maroon);
    padding: 8px;
    border-radius: 6px;
    color: var(--pale-cream);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background-color: var(--primary-gold);
    border-color: var(--primary-gold);
    color: var(--dark-maroon);
    box-shadow: 0 0 8px var(--focus-glow);
    transform: scale(1.05);
}

.btn-icon:active {
    transform: scale(0.98);
}

.btn-primary {
    padding: 12px 24px;
    background-color: var(--primary-gold);
    border: none;
    border-radius: 8px;
    color: var(--dark-maroon);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--pale-cream);
    box-shadow: 0 0 16px var(--focus-glow);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-maroon);
}

::-webkit-scrollbar-thumb {
    background: var(--outline-maroon);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-gold);
}

/* Glow Effect - Shared Styles */
.glow-effect::before {
    content: '';
    position: absolute;
    top: var(--y, 50%);
    left: var(--x, 50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(204, 153, 0, 0.2), transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: opacity 0.5s, transform 0.5s;
    pointer-events: none;
    z-index: -1;
}

.glow-effect::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: radial-gradient(
        500px circle at var(--x, 50%) var(--y, 50%),
        var(--primary-gold),
        transparent 50%
    );
    -webkit-mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.glow-effect:hover::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.glow-effect:hover::after {
    opacity: 1;
}

/* Changelog Tab Styles */
.changelog-header {
    text-align: center;
    margin-bottom: 48px;
}

.changelog-header h1 {
    font-size: 42px;
    color: var(--pale-cream);
    margin-bottom: 12px;
    font-weight: 700;
}

.changelog-subtitle {
    font-size: 18px;
    color: var(--muted-yellow);
    margin-bottom: 32px;
}

.changelog-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.stat-card {
    background: linear-gradient(135deg, var(--surface-maroon), var(--primary-gold-dark));
    border: 1px solid var(--primary-gold);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-gold);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--pale-cream);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(
        to bottom,
        var(--primary-gold),
        var(--outline-maroon),
        var(--primary-gold)
    );
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
    padding-left: 80px;
}

.timeline-marker {
    position: absolute;
    left: 18px;
    top: 8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 3px solid var(--dark-maroon);
    z-index: 1;
}

.timeline-marker.beta {
    background: linear-gradient(135deg, #FFD700, var(--primary-gold));
    box-shadow: 0 0 20px rgba(204, 153, 0, 0.6);
}

.timeline-marker.feature {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    box-shadow: 0 0 15px rgba(76, 175, 80, 0.5);
}

.timeline-marker.ai {
    background: linear-gradient(135deg, #9C27B0, #7B1FA2);
    box-shadow: 0 0 15px rgba(156, 39, 176, 0.5);
}

.timeline-marker.core {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    box-shadow: 0 0 15px rgba(33, 150, 243, 0.5);
}

.timeline-marker.start {
    background: linear-gradient(135deg, #FF5722, #E64A19);
    box-shadow: 0 0 15px rgba(255, 87, 34, 0.5);
}

.timeline-content {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 12px;
    padding: 24px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.timeline-content:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(204, 153, 0, 0.15);
}

.timeline-date {
    display: inline-block;
    font-size: 13px;
    color: var(--primary-gold);
    background-color: rgba(204, 153, 0, 0.1);
    padding: 4px 12px;
    border-radius: 12px;
    margin-bottom: 12px;
    font-weight: 600;
}

.timeline-title {
    font-size: 22px;
    color: var(--pale-cream);
    margin-bottom: 16px;
    font-weight: 600;
}

.timeline-commits {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.commit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background-color: rgba(0, 0, 0, 0.2);
    border-left: 3px solid var(--outline-maroon);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.commit-item:hover {
    background-color: rgba(204, 153, 0, 0.05);
    border-left-color: var(--primary-gold);
    transform: translateX(4px);
}

.commit-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.commit-badge.feature {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
}

.commit-badge.fix {
    background: linear-gradient(135deg, #FF9800, #F57C00);
    color: white;
}

.commit-badge.enhance {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
}

.commit-badge.merge {
    background: linear-gradient(135deg, #9C27B0, #7B1FA2);
    color: white;
}

.commit-badge.ai {
    background: linear-gradient(135deg, #E91E63, #C2185B);
    color: white;
}

.commit-badge.core {
    background: linear-gradient(135deg, #00BCD4, #0097A7);
    color: white;
}

.commit-badge.start {
    background: linear-gradient(135deg, #FF5722, #E64A19);
    color: white;
}

.commit-msg {
    flex: 1;
    color: var(--pale-cream);
    line-height: 1.4;
}

.commit-author {
    color: var(--primary-gold);
    font-weight: 600;
    font-size: 12px;
    flex-shrink: 0;
}

.changelog-footer {
    margin-top: 64px;
    text-align: center;
}

.changelog-footer h3 {
    font-size: 28px;
    color: var(--pale-cream);
    margin-bottom: 32px;
    font-weight: 600;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.highlight-card {
    background-color: var(--surface-maroon);
    border: 1px solid var(--outline-maroon);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.highlight-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(204, 153, 0, 0.2);
    border-color: var(--primary-gold);
}

.highlight-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.highlight-card h4 {
    font-size: 18px;
    color: var(--primary-gold);
    margin-bottom: 8px;
    font-weight: 600;
}

.highlight-card p {
    font-size: 14px;
    color: var(--muted-yellow);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .left-sidebar {
        width: 240px;
    }
    
    .right-sidebar {
        width: 280px;
    }
}

@media (max-width: 768px) {
    .left-sidebar,
    .right-sidebar {
        position: absolute;
        height: 100%;
        z-index: 10;
        box-shadow: 0 0 16px var(--shadow-color);
    }
    
    .left-sidebar {
        left: -280px;
        transition: left 0.3s ease;
    }
    
    .left-sidebar.visible {
        left: 0;
    }
    
    .right-sidebar {
        right: -320px;
        transition: right 0.3s ease;
    }
    
    .right-sidebar.visible {
        right: 0;
    }
}