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

:root {
    --primary: #2563eb;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

header p {
    position: relative;
    z-index: 1;
    opacity: 0.95;
    font-size: 1.1rem;
    font-weight: 500;
}

.user-selector {
    display: flex;
    gap: 1rem;
    align-items: center;
    position: relative;
    z-index: 1;
    margin-top: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.user-selector select, .user-selector button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
}

.user-selector select {
    background: white;
    color: var(--text);
    min-width: 200px;
}

.user-selector button {
    background: var(--secondary);
    color: white;
    font-weight: 600;
}

/* Navigation */
nav {
    background: var(--card-bg);
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-tabs {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
    scrollbar-width: thin;
    /* Enhanced scroll visibility */
    scrollbar-color: rgba(255,255,255,0.3) transparent;
    position: relative;
}

.nav-tabs::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 40px;
    background: linear-gradient(to right, transparent, rgba(102, 126, 234, 0.3));
    pointer-events: none;
}

.nav-tab {
    padding: 1rem 1.5rem;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    font-weight: 500;
    color: var(--text-light);
    transition: all 0.2s;
}

.nav-tab:hover {
    background: var(--bg);
    color: var(--text);
}

.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Main Content */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    margin-bottom: 1.5rem;
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.1rem;
    margin: 1rem 0 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
}

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

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-block {
    width: 100%;
}

.btn-success {
    background: var(--secondary);
    color: white;
}

/* Recipe Collapse */
.recipe-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.recipe-details.expanded {
    max-height: 5000px;
}

/* Ingredient Filter Buttons */
.ingredient-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.ingredient-filter-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border);
    background: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.ingredient-filter-btn:hover {
    border-color: var(--primary);
    background: #eff6ff;
    transform: translateY(-1px);
}

.ingredient-filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.ingredient-filter-btn.active:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    text-align: center;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: var(--primary);
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-card .label {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

.spinner {
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde047;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #34d399;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #f87171;
}

/* Shopping List */
.shopping-category {
    margin-bottom: 1.5rem;
}

.shopping-category h3 {
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.shopping-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.shopping-item input[type="checkbox"] {
    margin-right: 0.75rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.shopping-item.purchased {
    text-decoration: line-through;
    opacity: 0.6;
}

/* Recipe Card */
.recipe-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.recipe-card h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.recipe-macros {
    display: flex;
    gap: 1rem;
    margin: 0.5rem 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.recipe-ingredients {
    margin-top: 0.75rem;
}

.recipe-ingredients ul {
    list-style: none;
    padding-left: 0;
}

.recipe-ingredients li {
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.recipe-ingredients li:before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    .nav-tab {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================================================
   ENHANCED MOBILE RESPONSIVENESS (Added for LAN access and mobile devices)
   ============================================================================ */

/* Mobile: Stack all grid layouts to single column */
@media (max-width: 768px) {
    /* Header adjustments */
    header h1 {
        font-size: 1.75rem;
    }

    header p {
        font-size: 0.95rem;
    }

    /* Navigation tabs - allow horizontal scroll */
    .nav-tabs {
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.5rem;
        scrollbar-width: thin;
    }

    .nav-tabs::-webkit-scrollbar {
        height: 4px;
    }

    .nav-tabs::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.3);
        border-radius: 2px;
    }

    .nav-tab {
        display: inline-block;
        min-width: auto;
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    /* Container padding for mobile */
    .container {
        padding: 0 0.75rem;
    }

    /* All grid layouts become single column on mobile */
    .stats-grid,
    .form-grid,
    [style*="display: grid"] {
        grid-template-columns: 1fr !important;
        gap: 0.75rem;
    }

    /* Forms - prevent iOS zoom on input focus */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px !important; /* Prevent iOS zoom */
        width: 100%;
    }

    /* Buttons - full width on mobile */
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }

    /* User selector - stack vertically */
    .user-selector {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .user-selector label {
        margin-bottom: 0.25rem;
    }

    .user-selector select,
    .user-selector button {
        width: 100%;
    }

    /* Stat cards - better mobile spacing */
    .stat-card {
        padding: 1rem;
    }

    .stat-value {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.85rem;
    }

    /* Charts - responsive */
    canvas {
        max-width: 100% !important;
        height: auto !important;
    }

    .chart-container {
        min-height: 200px;
        margin-bottom: 1rem;
    }

    /* Tables - horizontal scroll */
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    table th,
    table td {
        font-size: 0.85rem;
        padding: 0.5rem;
    }

    /* Cards - better spacing */
    .card {
        margin-bottom: 1rem;
        padding: 1rem;
    }

    /* Section headers - smaller on mobile */
    h2 {
        font-size: 1.25rem;
    }

    h3 {
        font-size: 1.1rem;
    }
}

/* Tablet adjustments (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 95%;
    }

    /* 2 columns on tablet */
    [style*="grid-template-columns: 1fr 1fr 1fr"] {
        grid-template-columns: 1fr 1fr !important;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Touch-friendly sizes (any touch device) */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets to iOS recommended 44px */
    .btn,
    .nav-tab,
    input,
    select,
    button {
        min-height: 44px;
    }

    /* Larger checkboxes and radio buttons */
    input[type="checkbox"],
    input[type="radio"] {
        width: 24px;
        height: 24px;
        margin-right: 0.5rem;
    }

    /* Larger tap targets for links */
    a {
        padding: 0.25rem;
        margin: -0.25rem;
    }
}

/* Landscape mode on phones */
@media (max-width: 768px) and (orientation: landscape) {
    header {
        padding: 1rem 0;
    }

    header h1 {
        font-size: 1.5rem;
    }

    header p {
        display: none; /* Hide subtitle in landscape to save space */
    }

    .nav-tabs {
        padding: 0.25rem 0;
    }

    .chart-container {
        min-height: 150px;
    }
}

/* Plotly charts - mobile optimization */
@media (max-width: 768px) {
    .js-plotly-plot {
        width: 100% !important;
    }

    .plotly .modebar {
        display: none !important; /* Hide chart toolbar on mobile */
    }

    .plotly .svg-container {
        width: 100% !important;
    }
}

/* Print styles (bonus) */
@media print {
    header,
    nav,
    .btn,
    .user-selector {
        display: none;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    .card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* ========================================
   AI CHAT WIDGET STYLES
   ======================================== */

/* Chat Widget Container */
#chatWidget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: var(--font-family);
}

/* Floating Button (Collapsed State) */
.chat-float-button {
    min-width: 60px;
    height: 60px;
    padding: 0 16px;
    border-radius: 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-float-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.chat-float-button:active {
    transform: scale(0.95);
}

/* Chat Window (Expanded State) - Full Screen */
.chat-window {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #ffffff;  /* Solid white background for light mode */
    border-radius: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: chat-fade-in 0.2s ease;
    z-index: 10000;
}

/* Dark mode support removed - using consistent light theme */

@keyframes chat-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Chat Header */
.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.chat-header-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.chat-header-actions {
    display: flex;
    gap: 0.5rem;
}

.chat-header-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.chat-header-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Messages Container */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Welcome Message */
.chat-welcome {
    text-align: center;
    padding: 2rem 1rem;
}

.chat-welcome h3 {
    color: var(--text);
    margin-bottom: 0.5rem;
}

.chat-welcome p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.chat-examples {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
}

.chat-examples strong {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.chat-example-btn {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: var(--primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    text-align: left;
    width: 100%;
    transition: all 0.2s ease;
}

.chat-example-btn:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.5);
}

/* Individual Messages */
.chat-message {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    animation: chat-message-appear 0.3s ease;
}

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

.chat-message-user {
    align-items: flex-end;
}

.chat-message-ai {
    align-items: flex-start;
}

.chat-message-content {
    max-width: 80%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    line-height: 1.5;
    font-size: 0.95rem;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.chat-message-user .chat-message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-right-radius: 4px;
}

.chat-message-ai .chat-message-content {
    background: var(--card-bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}

.chat-message-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.chat-message-time {
    font-size: 0.75rem;
    color: var(--text-light);
    opacity: 0.7;
}

.chat-message-speaker {
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-message-speaker:hover {
    opacity: 1;
    background: rgba(102, 126, 234, 0.1);
}

.chat-message-speaker svg {
    color: var(--primary);
}

/* Speaker Toggle Button in Header */
.chat-speaker-btn {
    transition: all 0.2s;
}

.chat-speaker-btn.active {
    background: rgba(102, 126, 234, 0.15);
    color: var(--primary);
}

.chat-speaker-btn.active svg {
    stroke: var(--primary);
}

.chat-speaker-btn.speaking {
    animation: pulse-speaker 1.5s ease-in-out infinite;
}

@keyframes pulse-speaker {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }
}

/* Voice Selector */
.chat-voice-selector {
    padding: 0.5rem 1rem;
    background: rgba(102, 126, 234, 0.05);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    font-size: 0.875rem;
}

.chat-voice-select {
    flex: 1;
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: white;
    font-size: 0.75rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.chat-voice-select:hover {
    border-color: var(--primary);
}

.chat-voice-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

/* Suggested Questions */
.chat-suggested-questions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.chat-suggestion-chip {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: var(--primary);
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.chat-suggestion-chip:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateX(4px);
}

/* Data Sources */
.chat-data-sources {
    font-size: 0.75rem;
    color: var(--text-light);
    opacity: 0.8;
    margin-top: 0.25rem;
}

/* Loading Animation */
.chat-loading {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
}

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

.chat-loading-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.chat-loading-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes chat-loading-bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Slow Response Notice */
.chat-slow-response-notice {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 0.5rem;
    font-style: italic;
    opacity: 0.8;
    animation: fade-in 0.3s ease-in;
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 0.8; }
}

/* Input Container */
.chat-input-container {
    padding: 1rem;
    background: var(--card);
    border-top: 1px solid var(--border);
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--card-bg);
    color: var(--text);
    font-size: 0.95rem;
    font-family: var(--font-family);
    outline: none;
    transition: border-color 0.2s ease;
}

.chat-input:focus {
    border-color: var(--primary);
}

.chat-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.chat-send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    transform: scale(1.1);
}

.chat-send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    #chatWidget {
        bottom: 10px;
        right: 10px;
    }

    .chat-float-button {
        width: 50px;
        height: 50px;
    }

    .chat-window {
        width: calc(100vw - 20px);
        height: calc(100vh - 20px);
        max-width: 100%;
        max-height: 100%;
        border-radius: 12px;
    }

    .chat-message-content {
        max-width: 85%;
    }
}

/* Dark Mode Support (if implemented) */
@media (prefers-color-scheme: dark) {
    .chat-window {
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    }
}