/* Import Typography Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* Typography Fonts */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-code: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Monaco', 'Consolas', monospace;

    /* Primary Colors - Teal/Turquoise */
    --primary-teal: #00BCD4;
    --primary-dark: #00ACC1;
    --primary-light: #4DD0E1;
    --primary-pale: #E0F7FA;

    /* Greys */
    --grey-dark: #37474F;
    --grey-medium: #78909C;
    --grey-light: #B0BEC5;
    --grey-pale: #ECEFF1;

    /* UI Colors */
    --text-primary: #37474F;
    --text-secondary: #78909C;
    --heading-color: #00BCD4;

    /* System colors */
    --success-color: #4CAF50;
    --error-color: #EF4444;
    --bg-color: #FAFBFC;
    --panel-bg: #FFFFFF;
    --border-color: #E0E0E0;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
}

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

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
}

.container {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 100vh;
}

/* Header */
.main-header {
    background-color: white;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 32px;
    display: flex;
    align-items: center;
}

.header-logo-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.un-logo {
    height: 80px;
    width: auto;
}

.header-title-section h1 {
    color: var(--heading-color);
    font-size: 1.5rem;
    margin: 0;
}

.header-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.logout-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
}

.logout-btn:hover {
    background-color: var(--grey-pale);
    border-color: var(--grey-medium);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    min-height: 0;
}

/* Info Container - Collapsible */
.info-container {
    position: relative;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 32px;
    overflow: hidden;
    transition: all 0.3s ease;
    min-height: 0;
}

.info-container.collapsed {
    border-radius: 12px;
    min-height: 60px;
    overflow: visible;
}

.info-collapsed-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 60px 16px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity 0.3s ease 0.2s;
}

.info-collapsed-header .exclamation-icon {
    flex-shrink: 0;
    color: #99bead;
    background: linear-gradient(135deg, #dde8e3 0%, #c4d9cc 100%);
    border-radius: 50%;
    padding: 6px;
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-container.collapsed .info-collapsed-header {
    opacity: 1;
}

.info-toggle-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: white;
    border: 1px solid var(--border-color);
    padding: 8px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: var(--shadow-sm);
}

.info-container.collapsed .info-toggle-btn {
    top: 12px;
}

.info-toggle-btn:hover {
    background-color: #dde8e3;
    border-color: #99bead;
    transform: scale(1.05);
}

.info-toggle-btn svg {
    color: #99bead;
}

.info-content {
    padding: 24px;
    max-height: 2000px;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.info-container.collapsed .info-content {
    max-height: 0;
    padding: 0 24px;
    opacity: 0;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 20px;
    width: 100%;
}

.hero-title {
    color: #000000;
    font-size: 1.75rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.hero-subtitle {
    color: #000000;
    font-size: 1rem;
    margin-bottom: 6px;
    font-weight: 400;
}

.hero-description {
    color: #000000;
    font-size: 1rem;
    margin-bottom: 16px;
    font-weight: 400;
}

.info-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 12px;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-model {
    background-color: #91b9a7;
    color: white;
    border: 1px solid var(--primary-light);
}

.badge-corpus {
    background-color: var(--grey-pale);
    color: black;
    border: 1px solid var(--grey-light);
}

.disclaimer {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-style: italic;
    max-width: 900px;
    margin: 0 auto;
}

/* Tips Section */
.tips-section {
    background: #dde8e3;
    border-radius: 10px;
    padding: 12px 20px;
    margin-bottom: 0;
    border: 1px solid #d8d8d8;
    width: 100%;
}

.tips-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.tips-icon {
    color: #FFA500;
    fill: none;
    stroke: currentColor;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
}

.tips-header h3 {
    color: var(--grey-dark);
    font-size: 0.9rem;
    margin: 0;
}

.tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tips-list li {
    color: var(--text-primary);
    font-size: 0.8rem;
    padding: 3px 0;
    padding-left: 20px;
    position: relative;
}

.tips-list li:before {
    content: "•";
    position: absolute;
    left: 8px;
    color: var(--text-primary);
    font-weight: bold;
}

/* Features Section */
.features-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.feature-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    background-color: var(--grey-pale);
}

.feature-card.disabled:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-color);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.feature-icon-blue {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    color: #1976D2;
}

.feature-icon-green {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    color: #388E3C;
}

.feature-icon-teal {
    background: linear-gradient(135deg, #E0F7FA 0%, #B2EBF2 100%);
    color: #00ACC1;
}

.feature-card h4 {
    color: var(--grey-dark);
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin: 0;
}

/* Chat Interface */
.chat-interface {
    display: flex;
    gap: 0;
    flex: 1;
    height: 100%;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--panel-bg);
    border-radius: 0;
    padding: 16px;
    box-shadow: none;
    border: none;
    border-right: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    transition: transform 0.2s ease, width 0.2s ease;
    position: relative;
}

.sidebar.hidden {
    transform: translateX(-100%);
    width: 0;
    padding: 0;
    border: none;
    overflow: hidden;
}

.sidebar-logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 0;
    margin-bottom: 12px;
    position: relative;
}

.sidebar-logo-section .un-logo {
    height: 60px;
    width: auto;
    max-width: 100%;
}

.btn-new-chat-top {
    width: 100%;
    background-color: #008285;
    color: white;
    padding: 12px 16px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.btn-new-chat-top:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 12px;
    position: relative;
}

.sidebar-hide-btn {
    background: transparent;
    border: none;
    padding: 6px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    flex-shrink: 0;
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
}

.sidebar-show-btn {
    background: transparent;
    border: none;
    padding: 6px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    flex-shrink: 0;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
}

.sidebar-hide-btn:hover,
.sidebar-show-btn:hover {
    background-color: var(--grey-pale);
    color: var(--text-primary);
}

.sidebar-hide-btn svg,
.sidebar-show-btn svg {
    width: 18px;
    height: 18px;
}

.sidebar-title-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-header h2 {
    font-size: 1.1rem;
    margin: 0;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-toggle-btn {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    opacity: 1;
}

.sidebar-toggle-btn:hover {
    background-color: var(--grey-pale);
    color: #99bead;
}

/* Sidebar collapsed state */
.sidebar.collapsed {
    width: 80px;
    padding: 16px 8px;
    align-items: center;
    z-index: 10;
}

.sidebar.collapsed .conversations-list {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    display: none;
}

.sidebar.collapsed .sidebar-toggle-btn {
    display: none;
}

.sidebar.collapsed .sidebar-logo-section {
    justify-content: center;
    align-items: center;
    padding: 8px 0;
    margin-bottom: 8px;
    position: relative;
    flex-direction: column;
}

.sidebar.collapsed .sidebar-logo-section .un-logo {
    display: none;
}

.sidebar.collapsed .sidebar-hide-btn {
    position: static !important;
    margin: 0 auto;
    margin-bottom: 4px;
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    padding: 8px;
    justify-content: center;
    align-items: center;
    display: flex !important;
    top: auto;
    right: auto;
    background: transparent;
}

.sidebar-hide-btn .collapse-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
    display: none;
}

.sidebar.collapsed .sidebar-hide-btn .collapse-logo {
    display: block !important;
    width: 32px;
    height: 32px;
}

.sidebar.collapsed .sidebar-hide-btn svg {
    display: none;
}

.sidebar-separator {
    display: none;
    width: 100%;
    height: 1px;
    background-color: var(--border-color);
    margin: 12px 0;
}

.sidebar.collapsed .sidebar-separator {
    display: block;
    margin: 2px 0 16px 0;
}

.sidebar.collapsed .btn-new-chat-top {
    width: 36px;
    height: 36px;
    padding: 0;
    margin-bottom: 12px;
    border-radius: 50%;
    justify-content: center;
}

.sidebar.collapsed .btn-new-chat-top span {
    display: none;
}

.sidebar.collapsed .btn-new-chat-top svg {
    width: 18px;
    height: 18px;
}

.sidebar.collapsed .user-profile-section {
    margin-top: auto;
}

.sidebar.collapsed .user-profile-item {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
}

.sidebar.collapsed .user-profile-avatar {
    width: 36px;
    height: 36px;
    margin: 0;
}

.sidebar.collapsed .user-profile-name {
    display: none;
}

.sidebar.collapsed .user-profile-menu {
    position: fixed !important;
    left: calc(80px + 8px);
    right: auto;
    bottom: 16px;
    min-width: 160px;
    z-index: 10001 !important;
}

.conversations-list {
    flex: 1;
    overflow-y: auto;
    margin-top: 8px;
    transition: opacity 0.2s ease, max-height 0.3s ease;
}

.loading-conversations {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.conversation-item {
    padding: 14px 12px;
    margin-bottom: 8px;
    background-color: var(--bg-color);
    border: 1px solid transparent;
    border-radius: 12px;
    transition: all 0.2s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    position: relative;
}

.conversation-item:hover {
    background-color: #dde8e3;
    border-color: #91b9a7;
}

.conversation-item.active {
    background-color: #dde8e3;
    border-color: #99bead;
}

.conversation-content {
    flex: 1;
    min-width: 0;
    cursor: pointer;
}

.conversation-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conversation-title-input {
    width: 100%;
    padding: 4px 8px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-body);
    border: 2px solid #99bead;
    border-radius: 6px;
    outline: none;
    background-color: white;
    color: var(--text-primary);
}

.conversation-title-input:focus {
    box-shadow: 0 0 0 3px #dde8e3;
}

.conversation-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.conversation-menu-btn {
    background: transparent;
    border: none;
    padding: 6px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    opacity: 0;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.conversation-item:hover .conversation-menu-btn {
    opacity: 1;
}

.conversation-menu-btn:hover {
    background-color: var(--grey-pale);
    color: #99bead;
}

.conversation-menu-btn:active {
    transform: scale(0.95);
}

.conversation-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 8px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    z-index: 1000;
    min-width: 160px;
    overflow: hidden;
    animation: menuSlideIn 0.15s ease;
}

@keyframes menuSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
    text-align: left;
    font-family: var(--font-body);
}

.menu-item:hover {
    background-color: var(--grey-pale);
}

.menu-item svg {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

.menu-item.delete {
    color: var(--error-color);
    border-top: 1px solid var(--border-color);
}

.menu-item.delete:hover {
    background-color: #fee2e2;
}

.user-profile-section {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.user-profile-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background-color: var(--bg-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.user-profile-item:hover {
    background-color: #dde8e3;
    border-color: #91b9a7;
}

.user-profile-item.menu-open {
    background-color: #dde8e3;
}

.user-profile-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #99bead 0%, #91b9a7 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.user-profile-name {
    flex: 1;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-profile-menu {
    position: absolute;
    bottom: calc(100% + 4px);
    left: 8px;
    right: 8px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    z-index: 1000;
    overflow: hidden;
    animation: menuSlideUp 0.15s ease;
}

@keyframes menuSlideUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Chat Panel */
.chat-panel {
    flex: 1;
    background: var(--panel-bg);
    border-radius: 0;
    padding: 20px;
    box-shadow: none;
    border: none;
    display: flex;
    flex-direction: column;
    height: 100%;
    max-height: 100%;
    overflow: hidden;
    position: relative;
    transition: flex 0.2s ease;
}

.chat-panel.expanded {
    flex: 1;
}

.chat-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.sidebar-show-btn {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
}

/* Chat Header Actions */
.chat-header-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.header-action-btn {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.header-action-btn:hover {
    background: var(--grey-pale);
    color: var(--primary-teal);
}

.header-action-btn:active {
    transform: scale(0.95);
}

.header-action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.header-action-btn svg {
    width: 20px;
    height: 20px;
}

/* Expand/Collapse Button */
.expand-btn {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.expand-btn:hover {
    background: var(--grey-pale);
    color: var(--primary-teal);
}

.expand-btn:active {
    transform: scale(0.95);
}

/* Fullscreen Mode */
.chat-panel.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 9999;
    max-width: 100vw !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

.chat-panel.fullscreen .chat-container {
    max-height: calc(100vh - 200px) !important;
    user-select: text; /* Ensure text selection works in fullscreen */
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

/* Ensure message content is selectable in fullscreen */
.chat-panel.fullscreen .message-content {
    user-select: text !important;
    -webkit-user-select: text !important;
    -moz-user-select: text !important;
    -ms-user-select: text !important;
    pointer-events: auto !important;
}

/* Hide other elements when in fullscreen */
body.chat-fullscreen .main-header,
body.chat-fullscreen .info-container,
body.chat-fullscreen .sidebar,
body.chat-fullscreen .main-footer,
body.chat-fullscreen .search-controls {
    display: none !important;
}

/* Ensure input container and context bar are visible in fullscreen */
.chat-panel.fullscreen .input-container,
.chat-panel.fullscreen #context-bar {
    display: block !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

body.chat-fullscreen .chat-interface {
    padding: 0 !important;
    gap: 0 !important;
}

body.chat-fullscreen .main-content {
    padding: 0 !important;
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    margin-bottom: 12px;
    padding: 16px;
    background-color: var(--bg-color);
    border-radius: 12px;
    min-height: 0;
    max-height: 100%;
    scroll-behavior: auto;
    -webkit-overflow-scrolling: touch;
    position: relative;
}

/* Background content shown when chat is empty */
.chat-background-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100%;
    padding: 20px;
    max-width: 700px;
    margin: 0 auto;
}

/* Scroll to bottom button */
.scroll-to-bottom-btn {
    position: absolute;
    bottom: 80px;
    right: 40px;
    width: 44px;
    height: 44px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8);
    transition: all 0.2s ease;
    z-index: 100;
    color: white;
    pointer-events: none;
}

.scroll-to-bottom-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    pointer-events: auto;
}

.scroll-to-bottom-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-to-bottom-btn:active {
    transform: scale(0.95);
}

.scroll-to-bottom-btn svg {
    width: 20px;
    height: 20px;
}

.welcome-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.welcome-message h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.welcome-message p {
    font-size: 1rem;
    color: var(--text-secondary);
}

.empty-conversations {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.empty-conversations p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Search Controls */
.search-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
    padding: 8px 12px;
    background-color: transparent;
    border-radius: 10px;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
}

.filter-btn:hover {
    background-color: var(--grey-pale);
    border-color: var(--grey-medium);
}

.output-format {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.output-format label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.output-format select {
    flex: 1;
    max-width: 300px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    background: white;
    cursor: pointer;
    color: var(--text-primary);
}

.output-format select:disabled {
    background-color: white;
    color: var(--grey-medium);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Filters Panel */
.filters-panel {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 8px;
    overflow: hidden;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.filters-content {
    padding: 16px;
}

.filter-section {
    margin-bottom: 16px;
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

/* Time Range */
.date-range {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.date-input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.date-input-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.date-input {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.date-input:disabled {
    background-color: var(--grey-pale);
    color: var(--grey-medium);
    cursor: not-allowed;
    opacity: 0.6;
}

.date-input:disabled::-webkit-calendar-picker-indicator {
    cursor: not-allowed;
    opacity: 0.5;
}

.date-input:focus {
    outline: none;
    border-color: var(--primary-teal);
    box-shadow: 0 0 0 3px var(--primary-pale);
}

.date-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    color: var(--primary-teal);
}

/* Document Types */
.document-types-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.radio-option:hover {
    background-color: var(--grey-pale);
}

.radio-option input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-teal);
}

.radio-option input[type="radio"]:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.radio-label {
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
}

.radio-option:has(input:disabled) {
    opacity: 0.5;
    cursor: not-allowed;
}

.radio-option:has(input:disabled) .radio-label {
    cursor: not-allowed;
    color: var(--text-secondary);
}

.radio-option:has(input:disabled):hover {
    background-color: transparent;
}

/* Input Container */
.input-container {
    padding-top: 32px;
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    background-color: white;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 8px 12px;
    transition: all 0.2s ease;
}

.input-wrapper:focus-within {
    border-color: var(--primary-teal);
    box-shadow: 0 0 0 3px var(--primary-pale);
}

.input-wrapper textarea {
    flex: 1;
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
    resize: none;
    outline: none;
    min-height: 24px;
    max-height: 150px;
    line-height: 1.5;
    padding: 8px;
    color: var(--text-primary);
}

.input-wrapper textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.input-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 8px;
}

.btn-attach {
    background: transparent;
    color: var(--text-secondary);
    padding: 10px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-attach:hover {
    background-color: var(--grey-pale);
    transform: scale(1.1);
}

.btn-voice {
    background: transparent;
    color: var(--text-secondary);
    padding: 10px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-voice:hover {
    background-color: var(--grey-pale);
    color: var(--primary-teal);
}

.btn-send {
    background-color: #008285;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.2s ease;
    min-width: 44px;
    min-height: 44px;
}

.btn-send svg {
    color: white;
    stroke: white;
}

.btn-send:hover:not(:disabled) {
    background-color: #006d70;
    transform: translateY(-1px);
    color: white;
}

.btn-send:hover:not(:disabled) svg {
    color: white;
    stroke: white;
}

.btn-send:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Context Bar */
.context-bar {
    margin-bottom: 12px;
    animation: slideDown 0.2s ease;
}

.context-bar-content {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background-color: var(--primary-pale);
    border: 1px solid var(--primary-light);
    border-radius: 10px;
}

.context-bar-content svg {
    flex-shrink: 0;
    color: var(--primary-teal);
}

.context-bar-content .context-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.context-bar-content .context-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-dark);
    text-transform: uppercase;
}

.context-bar-content .context-quote {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-style: italic;
}

.context-close-btn {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.context-close-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--error-color);
}

/* Selection Tooltip */
.selection-tooltip {
    position: fixed;
    z-index: 10000; /* Higher than fullscreen panel (9999) */
    animation: fadeIn 0.2s ease;
    pointer-events: auto; /* Ensure clicks work */
}

.ask-agent-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background-color: var(--primary-teal);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.3);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.ask-agent-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.4);
}

.ask-agent-btn svg {
    width: 16px;
    height: 16px;
}

/* Messages */
.message {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    animation: fadeIn 0.3s ease;
}

.message.user {
    justify-content: flex-end;
}

.message.assistant {
    justify-content: flex-start;
    align-items: flex-start;
}

.message-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: 600;
    font-size: 0.875rem;
}

.message.assistant .message-icon {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-wrapper {
    max-width: 85%;
    flex: 0 1 auto;
    width: fit-content;
    position: relative;
}

.message-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.message-header.user {
    flex-direction: row-reverse;
}

.message-header.assistant {
    flex-direction: row;
}

.message-context-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background-color: var(--grey-pale);
    border-left: 3px solid #99bead;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.message-context-box svg {
    flex-shrink: 0;
    color: #99bead;
}

.message-context-box .context-text {
    font-style: italic;
    flex: 1;
}

.message-content {
    padding: 20px 24px;
    border-radius: 12px;
    line-height: 1.7;
    font-size: 0.875rem;
    width: fit-content;
    min-width: fit-content;
    max-width: 100%;
    height: fit-content;
    position: relative;
    z-index: 1;
}

/* Add extra top padding when sources button is present to prevent overlap */
.message-wrapper.has-sources .message-content {
    padding-top: 50px;
}

/* Ensure context box doesn't cover sources button */
.message-wrapper.has-sources .message-context-box {
    margin-top: 42px;
}

.message.user .message-content {
    background-color: #dde8e3;
    color: #4a504d;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.2);
}

.message.assistant .message-content {
    background-color: #f8f9fc;
    color: #4a504d;
    border: 1px solid #E9ECEF;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* ===== MARKDOWN RENDERING STYLES ===== */
.message.assistant .message-content h1,
.message.assistant .message-content h2,
.message.assistant .message-content h3,
.message.assistant .message-content h4,
.message.assistant .message-content h5,
.message.assistant .message-content h6 {
    font-family: var(--font-heading);
    color: var(--grey-dark);
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    line-height: 1.3;
    font-weight: 600;
}

.message.assistant .message-content h1:first-child,
.message.assistant .message-content h2:first-child,
.message.assistant .message-content h3:first-child,
.message.assistant .message-content h4:first-child {
    margin-top: 0;
}

.message.assistant .message-content h1 {
    font-size: 1.75rem;
    padding-bottom: 0.5em;
    border-bottom: 2px solid #99bead;
    color: #6b8e7a;
}

.message.assistant .message-content h2 {
    font-size: 1.4rem;
    padding-bottom: 0.4em;
    border-bottom: 1px solid #E9ECEF;
    color: #6b8e7a;
}

.message.assistant .message-content h3 {
    font-size: 1.2rem;
    color: var(--grey-dark);
}

.message.assistant .message-content h4 {
    font-size: 1.05rem;
    color: var(--grey-dark);
}

.message.assistant .message-content h5,
.message.assistant .message-content h6 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Paragraphs */
.message.assistant .message-content p {
    margin: 0 0 1em 0;
    line-height: 1.75;
}

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

/* Strong and Emphasis */
.message.assistant .message-content strong {
    font-weight: 600;
    color: var(--grey-dark);
}

.message.assistant .message-content em {
    font-style: italic;
    color: var(--text-primary);
}

/* Links */
.message.assistant .message-content a {
    color: #6b8e7a;
    text-decoration: none;
    border-bottom: 1px solid #99bead;
    transition: all 0.2s ease;
}

.message.assistant .message-content a:hover {
    color: #99bead;
    border-bottom-color: #99bead;
    background-color: #dde8e3;
    padding: 0 2px;
    margin: 0 -2px;
    border-radius: 2px;
}

/* Inline Code */
.message.assistant .message-content code {
    font-family: var(--font-code);
    font-size: 0.875em;
    background: linear-gradient(135deg, #2d4a3d 0%, #1a3d2e 100%);
    color: #e8f5e9;
    padding: 0.2em 0.5em;
    border-radius: 6px;
    font-weight: 500;
    letter-spacing: -0.3px;
}

/* Code Blocks */
.message.assistant .message-content pre {
    background: linear-gradient(145deg, #2d4a3d 0%, #1a3d2e 100%);
    border-radius: 12px;
    padding: 1.25em 1.5em;
    overflow-x: auto;
    margin: 1.25em 0;
    border: 1px solid #3d5a4d;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.1),
        0 2px 4px -1px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    position: relative;
}

.message.assistant .message-content pre::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 16px;
    width: 12px;
    height: 12px;
    background: #99bead;
    border-radius: 50%;
    box-shadow: 
        20px 0 0 #91b9a7,
        40px 0 0 #6b8e7a;
}

.message.assistant .message-content pre code {
    background: transparent;
    color: #e8f5e9;
    padding: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    display: block;
    padding-top: 1.5em;
}

/* Blockquotes */
.message.assistant .message-content blockquote {
    border-left: 4px solid #99bead;
    background: linear-gradient(90deg, #dde8e3 0%, transparent 100%);
    margin: 1.25em 0;
    padding: 1em 1.5em;
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--grey-dark);
    position: relative;
}

.message.assistant .message-content blockquote::before {
    content: '"';
    position: absolute;
    top: -5px;
    left: 12px;
    font-size: 3rem;
    color: #91b9a7;
    font-family: Georgia, serif;
    line-height: 1;
    opacity: 0.5;
}

.message.assistant .message-content blockquote p {
    margin: 0;
    position: relative;
    z-index: 1;
}

.message.assistant .message-content blockquote p:not(:last-child) {
    margin-bottom: 0.75em;
}

/* Unordered Lists */
.message.assistant .message-content ul {
    margin: 1em 0;
    padding-left: 0;
    list-style: none;
}

.message.assistant .message-content ul li {
    position: relative;
    padding-left: 1.75em;
    margin-bottom: 0.6em;
    line-height: 1.65;
}

.message.assistant .message-content ul li::before {
    content: '';
    position: absolute;
    left: 0.5em;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, #99bead 0%, #91b9a7 100%);
    border-radius: 50%;
}

.message.assistant .message-content ul li:last-child {
    margin-bottom: 0;
}

/* Nested lists */
.message.assistant .message-content ul ul,
.message.assistant .message-content ol ul {
    margin: 0.5em 0;
}

.message.assistant .message-content ul ul li::before {
    background: transparent;
    border: 2px solid #99bead;
    width: 4px;
    height: 4px;
}

/* Ordered Lists */
.message.assistant .message-content ol {
    margin: 1em 0;
    padding-left: 0;
    list-style: none;
    counter-reset: ol-counter;
}

.message.assistant .message-content ol li {
    position: relative;
    padding-left: 2.25em;
    margin-bottom: 0.6em;
    line-height: 1.65;
    counter-increment: ol-counter;
}

.message.assistant .message-content ol li::before {
    content: counter(ol-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 1.5em;
    height: 1.5em;
    background: linear-gradient(135deg, #99bead 0%, #91b9a7 100%);
    color: white;
    font-size: 0.75em;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.message.assistant .message-content ol li:last-child {
    margin-bottom: 0;
}

/* Nested ordered lists */
.message.assistant .message-content ol ol,
.message.assistant .message-content ul ol {
    margin: 0.5em 0;
    counter-reset: ol-counter;
}

.message.assistant .message-content ol ol li::before {
    background: transparent;
    border: 2px solid #99bead;
    color: #99bead;
}

/* Horizontal Rule */
.message.assistant .message-content hr {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, #91b9a7, #99bead, #91b9a7, transparent);
    margin: 2em 0;
    border-radius: 2px;
}

/* Tables */
.message.assistant .message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25em 0;
    font-size: 0.9rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.message.assistant .message-content thead {
    background: linear-gradient(135deg, #99bead 0%, #6b8e7a 100%);
    color: white;
}

.message.assistant .message-content th {
    padding: 0.875em 1em;
    text-align: left;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: none;
}

.message.assistant .message-content td {
    padding: 0.875em 1em;
    border-bottom: 1px solid #E9ECEF;
    color: var(--text-primary);
}

.message.assistant .message-content tbody tr:last-child td {
    border-bottom: none;
}

.message.assistant .message-content tbody tr:nth-child(even) {
    background-color: #f8fafc;
}

.message.assistant .message-content tbody tr:hover {
    background-color: #dde8e3;
}

/* Images */
.message.assistant .message-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 1em 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Definition Lists */
.message.assistant .message-content dl {
    margin: 1em 0;
}

.message.assistant .message-content dt {
    font-weight: 600;
    color: var(--grey-dark);
    margin-top: 1em;
}

.message.assistant .message-content dt:first-child {
    margin-top: 0;
}

.message.assistant .message-content dd {
    margin-left: 1.5em;
    margin-bottom: 0.5em;
    color: var(--text-secondary);
}

/* Keyboard shortcuts */
.message.assistant .message-content kbd {
    display: inline-block;
    padding: 0.2em 0.5em;
    font-family: var(--font-code);
    font-size: 0.85em;
    background: linear-gradient(180deg, #fff 0%, #f1f5f9 100%);
    border: 1px solid #d1d5db;
    border-radius: 6px;
    box-shadow: 
        0 2px 0 #d1d5db,
        inset 0 -1px 0 #e5e7eb;
    color: var(--grey-dark);
}

/* Mark/Highlight */
.message.assistant .message-content mark {
    background: linear-gradient(120deg, #dde8e3 0%, #c4d9cc 100%);
    padding: 0.1em 0.3em;
    border-radius: 4px;
    color: var(--grey-dark);
}

/* Abbreviations */
.message.assistant .message-content abbr {
    text-decoration: underline dotted #99bead;
    cursor: help;
}

/* Subscript and Superscript */
.message.assistant .message-content sub,
.message.assistant .message-content sup {
    font-size: 0.75em;
}

/* Task Lists (GitHub style) */
.message.assistant .message-content input[type="checkbox"] {
    width: 1.1em;
    height: 1.1em;
    margin-right: 0.5em;
    accent-color: #99bead;
    vertical-align: middle;
}

/* Details/Summary */
.message.assistant .message-content details {
    margin: 1em 0;
    padding: 0.75em 1em;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.message.assistant .message-content summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-dark);
    padding: 0.25em 0;
}

.message.assistant .message-content details[open] summary {
    margin-bottom: 0.75em;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 0.75em;
}

/* Footnotes */
.message.assistant .message-content .footnote-ref {
    font-size: 0.75em;
    vertical-align: super;
    color: var(--primary-teal);
    text-decoration: none;
}

.message.assistant .message-content .footnotes {
    margin-top: 2em;
    padding-top: 1em;
    border-top: 1px solid #e2e8f0;
    font-size: 0.9em;
    color: var(--text-secondary);
}

/* Streaming message animation */
.message.streaming .message-content {
    position: relative;
    min-height: 40px;
    transition: all 0.1s ease-out;
}

.message.streaming .message-content::after {
    content: '▌';
    animation: blink 0.8s ease-in-out infinite;
    margin-left: 2px;
    color: var(--primary-teal);
    display: inline-block;
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
        transform: scaleY(1);
    }
    50%, 100% {
        opacity: 0.3;
        transform: scaleY(0.95);
    }
}

/* Smooth text appearance */
.message.streaming .message-content {
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.6;
}

/* Message Actions */
.message-actions {
    display: flex;
    gap: 6px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #E9ECEF;
}

.message.assistant .message-actions {
    justify-content: flex-start;
}

.message.user .message-actions {
    justify-content: flex-end;
}

.action-btn {
    background: transparent;
    border: none;
    padding: 8px 10px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.action-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.action-btn:active {
    transform: scale(0.95);
}

.action-btn.copied {
    color: var(--primary-teal);
    background-color: var(--primary-pale);
}

.action-btn.thumbs-up-btn.active {
    color: var(--success-color);
    background-color: #E8F5E9;
}

.action-btn.thumbs-down-btn.active {
    color: var(--error-color);
    background-color: #FEE2E2;
}

.action-btn svg {
    width: 18px;
    height: 18px;
}

/* Sources Button */
.sources-button {
    position: absolute;
    top: 8px;
    right: 8px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
    z-index: 100;
    pointer-events: auto;
}

.sources-button:hover {
    background-color: var(--primary-pale);
    border-color: var(--primary-teal);
    color: var(--primary-teal);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.sources-count {
    font-weight: 600;
    color: var(--primary-teal);
}

.sources-label {
    font-weight: 500;
}

/* Sources Modal */
.sources-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.2s ease;
    backdrop-filter: blur(4px);
}

.sources-modal {
    background: #f8f9fc;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease;
    overflow: hidden;
    border: 1px solid #E9ECEF;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sources-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid #E9ECEF;
}

.sources-modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #4a504d;
}

.sources-header-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sources-counter {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.sources-modal-close {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.sources-modal-close:hover {
    background-color: #dde8e3;
    color: #99bead;
}

.sources-modal-content {
    padding: 0;
    overflow-y: auto;
    flex: 1;
    position: relative;
    min-height: 400px;
}

.source-page {
    display: none;
    padding: 24px;
    animation: fadeIn 0.3s ease;
}

.source-page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.source-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid #99bead;
}

.source-number-badge {
    flex-shrink: 0;
    background: linear-gradient(135deg, #99bead 0%, #91b9a7 100%);
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 6px 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    box-shadow: 0 2px 4px rgba(153, 190, 173, 0.3);
}

.source-title-main {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
    color: #4a504d;
    line-height: 1.4;
    flex: 1;
}

.source-link-main {
    color: #6b8e7a;
    text-decoration: none;
    border-bottom: 1px solid #99bead;
    transition: all 0.2s ease;
}

.source-link-main:hover {
    color: #99bead;
    border-bottom-color: #99bead;
    background-color: #dde8e3;
}

.source-metadata {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--grey-pale);
    border-left: 3px solid #99bead;
    border-radius: 8px;
}

.metadata-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.metadata-item svg {
    flex-shrink: 0;
    color: #99bead;
}

.metadata-link {
    color: #6b8e7a;
    text-decoration: none;
    word-break: break-all;
    border-bottom: 1px solid #99bead;
    transition: all 0.2s ease;
}

.metadata-link:hover {
    color: #99bead;
    border-bottom-color: #99bead;
    background-color: #dde8e3;
}

.source-actions {
    display: flex;
    justify-content: flex-end;
    padding-top: 16px;
    border-top: 1px solid #E9ECEF;
}

.btn-view-source {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #99bead 0%, #91b9a7 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(153, 190, 173, 0.3);
}

.btn-view-source:hover {
    background: linear-gradient(135deg, #91b9a7 0%, #6b8e7a 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(153, 190, 173, 0.4);
}

.btn-view-source svg {
    flex-shrink: 0;
}

.source-link:hover {
    color: #99bead;
    text-decoration: underline;
}

.source-title {
    color: #4a504d;
    word-break: break-word;
}

.sources-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-top: 1px solid #E9ECEF;
    background: var(--grey-pale);
}

.sources-nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: white;
    border: 1px solid #E9ECEF;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: #4a504d;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sources-nav-btn:hover:not(:disabled) {
    background: #dde8e3;
    border-color: #99bead;
    color: #99bead;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(153, 190, 173, 0.3);
}

.sources-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--grey-pale);
}

.sources-nav-btn svg {
    flex-shrink: 0;
}

.sources-nav-prev {
    flex-direction: row;
}

.sources-nav-next {
    flex-direction: row-reverse;
}

/* Responsive styles for sources modal */
@media (max-width: 768px) {
    .sources-modal {
        max-width: 95%;
        max-height: 90vh;
    }
    
    .source-header {
        flex-direction: column;
        gap: 12px;
    }
    
    .source-number-badge {
        align-self: flex-start;
    }
    
    .source-metadata {
        font-size: 0.85rem;
    }
    
    .sources-modal-footer {
        flex-direction: column;
        gap: 12px;
    }
    
    .sources-nav-btn {
        width: 100%;
        justify-content: center;
    }
    
    .sources-header-info {
        flex-direction: column;
        align-items: flex-end;
        gap: 8px;
    }
}

/* Footer */
.main-footer {
    background-color: white;
    border-top: 1px solid var(--border-color);
    padding: 24px 32px;
    margin-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.footer-nav {
    display: flex;
    gap: 24px;
}

.footer-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: var(--primary-teal);
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-conversations .spinner {
    width: 24px;
    height: 24px;
    border-width: 3px;
    border-color: rgba(0, 188, 212, 0.2);
    border-top-color: var(--primary-teal);
}

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

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--grey-light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--grey-medium);
}

/* Responsive Design */
@media (max-width: 968px) {
    .features-section {
        grid-template-columns: 1fr;
    }

    .chat-interface {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        max-height: 300px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .hero-title {
        font-size: 1.75rem;
    }
}

@media (max-width: 768px) {
    .sidebar-logo-section .un-logo {
        height: 50px;
    }
}

/* Footer */
.main-footer {
    background-color: var(--panel-bg);
    border-top: 1px solid var(--border-color);
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    margin-top: auto;
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.footer-nav {
    display: flex;
    gap: 24px;
    align-items: center;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: #99bead;
}

@media (max-width: 768px) {
    .main-footer {
        flex-direction: column;
        gap: 16px;
        padding: 20px 16px;
        text-align: center;
    }

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
}

/* Share Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.2s ease-in-out;
}

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

.modal {
    background: var(--panel-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--text-secondary);
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.share-info {
    text-align: center;
}

.share-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--primary-teal);
}

.share-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.share-features {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    text-align: left;
}

.share-features li {
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-teal);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
    margin-top: 10px;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-primary:disabled {
    background: var(--grey-light);
    cursor: not-allowed;
}

.share-link-section {
    text-align: center;
}

.share-success {
    margin-bottom: 24px;
}

.share-success svg {
    margin-bottom: 12px;
}

.share-success h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.share-link-container {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.share-url-input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: var(--font-code);
    background: var(--grey-pale);
    color: var(--text-primary);
}

.btn-copy {
    background: var(--primary-teal);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
}

.btn-copy:hover {
    background: var(--primary-dark);
}

.share-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 12px;
    padding: 12px;
    background: var(--grey-pale);
    border-radius: 6px;
    text-align: left;
}

.share-note strong {
    color: var(--text-primary);
}

.share-loading {
    text-align: center;
    padding: 40px 20px;
}

.share-loading .spinner {
    margin: 0 auto 20px auto;
}

.share-loading p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.share-existing, .share-warning {
    text-align: center;
}

.warning-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.btn-secondary {
    background: var(--grey-light);
    color: var(--text-primary);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

.btn-secondary:hover {
    background: var(--grey-medium);
    color: white;
}

.btn-secondary:disabled {
    background: var(--grey-pale);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-danger {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-danger:disabled {
    background: var(--grey-light);
    cursor: not-allowed;
    opacity: 0.6;
}

.share-regenerate-info {
    background: var(--grey-pale);
    padding: 16px;
    border-radius: 8px;
    margin-top: 16px;
}