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

:root {
    /* Colors - High contrast for accessibility */
    --primary-color: #2e7d32;
    --primary-dark: #1b5e20;
    --secondary-color: #ff6f00;
    --background: #f5f5f5;
    --surface: #ffffff;
    --text-primary: #212121;
    --text-secondary: #757575;
    --border: #e0e0e0;
    --user-message: #e8f5e9;
    --assistant-message: #fff3e0;
    --error: #d32f2f;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Typography - Large, readable fonts */
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-xxl: 24px;
    
    /* Layout */
    --header-height: 64px;
    --input-area-height: auto;
    --max-width: 1200px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-display: swap;
    margin: 0;
    padding: 0;
    overflow: visible;
}

/* Main Layout Structure */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 1000;
}

.app-container {
    display: flex;
    height: 100vh;
    padding-top: var(--header-height);
    overflow: visible;
}

/* Sidebar */
.sidebar {
    width: 70px;
    background-color: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    transition: width 0.3s ease;
    flex-shrink: 0;
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar:not(.collapsed) {
    width: 260px;
}

/* Hide labels by default (collapsed state) */
.sidebar.collapsed .sidebar-label {
    display: none;
}

.sidebar:not(.collapsed) .sidebar-label {
    display: inline;
}

/* Center icons when collapsed */
.sidebar.collapsed .sidebar-item {
    justify-content: center;
    padding: 1rem 0;
    min-height: 50px;
}

.sidebar.collapsed .sidebar-icon {
    margin-right: 0;
    font-size: 1.5rem;
}

/* Hide section titles when collapsed */
.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .sidebar-subtitle,
.sidebar.collapsed .sidebar-divider {
    display: none;
}

/* Adjust footer for collapsed state */
.sidebar.collapsed .sidebar-footer {
    padding: 0.5rem;
}

.sidebar.collapsed .connection-status {
    justify-content: center;
}

.sidebar.collapsed .status-text {
    display: none;
}

.sidebar.collapsed .status-dot {
    margin: 0 auto;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background-color: var(--background);
}

/* Info Panel */
.info-panel {
    width: 300px;
    background-color: var(--surface);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
    transition: transform 0.3s ease, width 0.3s ease;
}

.info-panel.hidden {
    transform: translateX(100%);
    width: 0;
}

/* Header */
.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sidebar-toggle {
    background-color: transparent;
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: 8px;
    transition: background-color 0.3s ease;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.icon-button {
    background-color: transparent;
    color: white;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: 8px;
    transition: background-color 0.3s ease;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.header-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.logo {
    font-size: var(--font-size-xxl);
}

.language-toggle {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 60px;
    min-height: 44px; /* Touch-friendly */
}

.language-toggle:hover,
.language-toggle:focus {
    background-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
    outline: 2px solid white;
    outline-offset: 2px;
}

.language-toggle:active {
    transform: scale(0.98);
}

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    scroll-behavior: smooth;
    background-color: var(--background);
}

/* Message Bubbles */
.message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    animation: slideIn 0.3s ease;
}

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

.message.user {
    align-self: flex-end;
}

.message.assistant {
    align-self: flex-start;
}

.message-bubble {
    padding: var(--spacing-md);
    border-radius: 16px;
    word-wrap: break-word;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message.user .message-bubble {
    background-color: var(--user-message);
    border-bottom-right-radius: 4px;
}

.message.assistant .message-bubble {
    background-color: var(--assistant-message);
    border-bottom-left-radius: 4px;
}

.message-text {
    font-size: var(--font-size-lg);
    line-height: 1.5;
    white-space: pre-wrap;
}

.message-timestamp {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    text-align: right;
}

.message.assistant .message-timestamp {
    text-align: left;
}

/* Input Area */
.input-area {
    background-color: var(--surface);
    border-top: 2px solid var(--border);
    padding: var(--spacing-md);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.message-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: var(--font-size-lg);
    font-family: inherit;
    resize: none;
    max-height: 120px;
    transition: border-color 0.3s ease;
}

.message-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.message-input:disabled {
    background-color: var(--background);
    cursor: not-allowed;
}

.send-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.send-button:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: scale(1.05);
}

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

.send-button:disabled {
    background-color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.5;
}

.send-icon {
    font-size: var(--font-size-xl);
}

.char-counter {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: right;
    margin-top: var(--spacing-xs);
}

/* ============================================
   SIDEBAR STYLES
   ============================================ */

.sidebar-nav {
    padding: var(--spacing-lg) 0;
    flex: 1;
}

.sidebar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.sidebar-subtitle {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0 var(--spacing-lg);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: transparent;
    border: none;
    border-left: 3px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    text-align: left;
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.sidebar-item:hover {
    background-color: rgba(46, 125, 50, 0.05);
    border-left-color: var(--primary-color);
}

.sidebar-item.active {
    background-color: rgba(46, 125, 50, 0.1);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.sidebar-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.sidebar-label {
    flex: 1;
}

.sidebar-divider {
    height: 1px;
    background-color: var(--border);
    margin: var(--spacing-md) var(--spacing-lg);
}

.sidebar-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border);
}

/* ============================================
   INFO PANEL STYLES
   ============================================ */

.info-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    background-color: var(--surface);
}

.info-panel-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.info-panel-content {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.info-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.info-section:last-child {
    border-bottom: none;
}

.info-section-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.info-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.info-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.tips-list li {
    padding: var(--spacing-sm) 0;
    font-size: 14px;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--spacing-lg);
}

.tips-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.topic-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
    justify-content: flex-start;
}

.topic-tag {
    background-color: rgba(46, 125, 50, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(46, 125, 50, 0.3);
    border-radius: 16px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.topic-tag:hover {
    background-color: rgba(46, 125, 50, 0.2);
    transform: translateY(-1px);
}

/* Loading Indicator */
.loading-indicator {
    position: fixed;
    bottom: calc(var(--input-area-height) + var(--spacing-md));
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--surface);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
}

.loading-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.loading-dots span {
    width: 12px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

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

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

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* Welcome Message */
.welcome-message {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: auto;
    background-color: var(--surface);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.welcome-message h2 {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.welcome-message p {
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

/* Scrollbar Styling */
.chat-container::-webkit-scrollbar {
    width: 8px;
}

.chat-container::-webkit-scrollbar-track {
    background: var(--background);
}

.chat-container::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
        --spacing-lg: 16px;
    }
    
    .header {
        padding: 0 var(--spacing-md);
    }
    
    .header-title {
        font-size: var(--font-size-lg);
    }
    
    /* App container with left padding for icon sidebar */
    .app-container {
        padding-left: 70px;
    }
    
    /* Sidebar styles are in sidebar-panels-v2.css */
    
    .info-panel {
        display: none !important;
    }
    
    .chat-container {
        padding: var(--spacing-md);
    }
    
    .message {
        max-width: 90%;
    }
    
    .message-text {
        font-size: var(--font-size-base);
    }
    
    .welcome-message {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* Tablet Responsiveness */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }
    
    .info-panel {
        width: 260px;
    }
}

/* Accessibility - Focus Indicators */
button:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .header,
    .input-area,
    .loading-indicator {
        display: none;
    }
    
    .chat-container {
        overflow: visible;
    }
}

/* Structured Message Formatting */
.structured-message {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.message-heading {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin: var(--spacing-sm) 0;
}

.message-list {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.message-list li {
    margin: var(--spacing-xs) 0;
    line-height: 1.6;
}

.bullet-item {
    list-style-type: disc;
}

.numbered-item {
    list-style-type: decimal;
}

/* Expandable Sections */
.expandable-section {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: rgba(46, 125, 50, 0.05);
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s ease;
}

.section-header:hover {
    background-color: rgba(46, 125, 50, 0.1);
}

.section-header:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

.section-title {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--primary-color);
}

.expand-icon {
    font-size: 12px;
    color: var(--primary-color);
    transition: transform 0.2s ease;
}

.section-body {
    padding: var(--spacing-md);
    animation: slideDown 0.3s ease;
}

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

/* Recommendation List */
.recommendation-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.recommendation-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background-color: rgba(46, 125, 50, 0.05);
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
}

.recommendation-action {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.recommendation-impact {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Tradeoff List */
.tradeoff-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tradeoff-item {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-left: 3px solid var(--secondary-color);
    background-color: rgba(255, 111, 0, 0.05);
}

/* Outcome List */
.outcome-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.outcome-item {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-left: 3px solid #4caf50;
    background-color: rgba(76, 175, 80, 0.05);
}

/* Text Formatting */
.message-text strong {
    font-weight: 600;
    color: var(--text-primary);
}

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

/* Scheme Cards */
.scheme-cards-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.scheme-card {
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    background-color: var(--surface);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.scheme-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.scheme-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border);
}

.scheme-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    flex: 1;
}

.scheme-category {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 16px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

.scheme-summary {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.scheme-section {
    margin: var(--spacing-md) 0;
}

.scheme-section-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.scheme-benefits-list,
.scheme-eligibility-list,
.scheme-documents-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.scheme-benefits-list li,
.scheme-documents-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.scheme-benefits-list li::before,
.scheme-documents-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.scheme-eligibility-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    background-color: rgba(46, 125, 50, 0.05);
    border-radius: 4px;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.eligibility-icon {
    color: var(--primary-color);
    font-weight: bold;
    flex-shrink: 0;
}

.scheme-steps-list {
    list-style: decimal;
    padding-left: var(--spacing-lg);
    margin: 0;
}

.scheme-steps-list li {
    padding: var(--spacing-sm) 0;
    font-weight: 500;
}

.scheme-learn-more {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.learn-more-toggle {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s ease;
    min-height: 44px;
}

.learn-more-toggle:hover {
    background-color: var(--primary-color);
    color: white;
}

.learn-more-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.learn-more-content {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: rgba(46, 125, 50, 0.02);
    border-radius: 8px;
    animation: slideDown 0.3s ease;
}

.scheme-details {
    margin: var(--spacing-md) 0;
    line-height: 1.6;
}

.scheme-contact {
    margin-top: var(--spacing-md);
}

.scheme-contact p {
    margin: var(--spacing-xs) 0;
}

.scheme-contact a {
    color: var(--primary-color);
    text-decoration: underline;
}

.scheme-contact a:hover {
    color: var(--primary-dark);
}

.scheme-id {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 12px;
}

/* Mobile adjustments for scheme cards */
@media (max-width: 768px) {
    .scheme-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .scheme-category {
        align-self: flex-start;
    }
}

/* Scheme Action Buttons */
.scheme-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.scheme-action-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    min-height: 44px;
    flex: 1;
    min-width: 120px;
}

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

.scheme-action-btn.primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.scheme-action-btn.secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.scheme-action-btn.secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

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

.scheme-action-btn.copied {
    background-color: #4caf50;
    color: white;
    border-color: #4caf50;
}

/* Scheme Modal */
.scheme-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.scheme-modal.active {
    opacity: 1;
}

.scheme-modal-content {
    background-color: var(--surface);
    border-radius: 16px;
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 2px solid var(--border);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    position: relative;
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    flex: 1;
}

.modal-close-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background-color: transparent;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

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

.modal-close-btn:focus {
    outline: 2px solid var(--primary-color);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.scheme-detail-view {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.detail-section {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.detail-section:last-child {
    border-bottom: none;
}

.detail-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
}

.detail-section p {
    line-height: 1.6;
    margin: var(--spacing-sm) 0;
}

.detail-section ul,
.detail-section ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.detail-section li {
    margin: var(--spacing-xs) 0;
    line-height: 1.6;
}

.detail-section code {
    background-color: var(--background);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.scheme-id-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.copy-btn-inline {
    background-color: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px 8px;
    margin-left: var(--spacing-sm);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.copy-btn-inline:hover {
    background-color: var(--background);
    border-color: var(--primary-color);
}

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

/* Mobile adjustments for modal */
@media (max-width: 768px) {
    .scheme-modal {
        padding: 0;
    }
    
    .scheme-modal-content {
        max-height: 100vh;
        border-radius: 0;
        height: 100%;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-title {
        font-size: var(--font-size-lg);
        padding-right: 40px;
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .scheme-actions {
        flex-direction: column;
    }
    
    .scheme-action-btn {
        width: 100%;
    }
    
    .scheme-id-section {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Schemes Header */
.schemes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: rgba(46, 125, 50, 0.05);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.schemes-count {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.compare-schemes-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 44px;
}

.compare-schemes-btn:hover {
    background-color: #e65100;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

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

/* Comparison Modal */
.comparison-modal .scheme-modal-content {
    max-width: 900px;
}

.comparison-table-container {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-md);
    text-align: left;
    border: 1px solid var(--border);
}

.comparison-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.comparison-table td.comparison-label {
    background-color: rgba(46, 125, 50, 0.05);
    font-weight: 600;
    color: var(--primary-dark);
    white-space: nowrap;
}

.comparison-table tr:hover {
    background-color: rgba(46, 125, 50, 0.02);
}

.comparison-table .scheme-action-btn.small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 14px;
    min-height: 36px;
    width: 100%;
}

/* Mobile adjustments for comparison */
@media (max-width: 768px) {
    .schemes-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .compare-schemes-btn {
        width: 100%;
    }
    
    .comparison-table {
        font-size: 14px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-sm);
    }
    
    .comparison-table th {
        min-width: 120px;
    }
}

/* Connection Status Indicator */
.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    transition: all 0.3s ease;
}

.connection-status .status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.connection-status.online .status-dot {
    background-color: #4caf50;
}

.connection-status.offline .status-dot {
    background-color: #f44336;
    animation: none;
}

.connection-status.reconnecting .status-dot {
    background-color: #ff9800;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.connection-status .status-text {
    font-weight: 500;
    color: var(--text-secondary);
}

.connection-status.online .status-text {
    color: #4caf50;
}

.connection-status.offline .status-text {
    color: #f44336;
}

.connection-status.reconnecting .status-text {
    color: #ff9800;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + 50px);
    right: var(--spacing-md);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--surface);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
}

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

.toast-icon {
    font-size: var(--font-size-xl);
    font-weight: bold;
    flex-shrink: 0;
}

.toast-text {
    flex: 1;
    font-size: var(--font-size-base);
    line-height: 1.4;
}

.toast-success {
    border-left: 4px solid #4caf50;
}

.toast-success .toast-icon {
    color: #4caf50;
}

.toast-error {
    border-left: 4px solid #f44336;
}

.toast-error .toast-icon {
    color: #f44336;
}

.toast-warning {
    border-left: 4px solid #ff9800;
}

.toast-warning .toast-icon {
    color: #ff9800;
}

.toast-info {
    border-left: 4px solid #2196f3;
}

.toast-info .toast-icon {
    color: #2196f3;
}

/* Message Status Indicators */
.message-status {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    margin-top: var(--spacing-xs);
    color: var(--text-secondary);
}

.message-status .status-icon {
    font-size: 14px;
}

.message-status.status-sending {
    color: #ff9800;
}

.message-status.status-sending .status-icon {
    animation: rotate 1s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.message-status.status-sent {
    color: #4caf50;
}

.message-status.status-failed {
    color: #f44336;
}

.message-status.status-queued {
    color: #ff9800;
}

/* Retry Button */
.retry-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 36px;
}

.retry-button:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.retry-button:active:not(:disabled) {
    transform: translateY(0);
}

.retry-button:disabled {
    background-color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.retry-button .retry-icon {
    font-size: 16px;
    font-weight: bold;
}

/* Typing Indicator */
.typing-indicator-message {
    animation: slideIn 0.3s ease;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm) 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
    animation-delay: -0.16s;
}

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

/* Mobile Adjustments for New Features */
@media (max-width: 768px) {
    .toast-container {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
    
    .toast {
        padding: var(--spacing-sm);
    }
    
    .connection-status {
        font-size: 12px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .connection-status .status-dot {
        width: 8px;
        height: 8px;
    }
    
    .retry-button {
        width: 100%;
        justify-content: center;
    }
}

/* Accessibility - High Contrast Mode */
@media (prefers-contrast: high) {
    .connection-status.online .status-dot {
        border: 2px solid #4caf50;
    }
    
    .connection-status.offline .status-dot {
        border: 2px solid #f44336;
    }
    
    .toast {
        border: 2px solid var(--border);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .toast,
    .typing-indicator span,
    .message-status.status-sending .status-icon,
    .connection-status .status-dot {
        animation: none;
    }
    
    .toast.show {
        transition: opacity 0.1s ease;
    }
}

/* Estimated Wait Time Indicator */
.wait-time-estimate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: rgba(255, 152, 0, 0.1);
    border-top: 2px solid #ff9800;
    font-size: 14px;
    color: #ff9800;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.wait-time-estimate.show {
    opacity: 1;
    transform: translateY(0);
}

.wait-time-estimate .estimate-icon {
    font-size: 18px;
    animation: pulse 1.5s infinite;
}

.wait-time-estimate .estimate-text {
    font-weight: 500;
}

/* Success Animation */
.message-bubble.success-animation {
    animation: successPulse 0.6s ease;
}

@keyframes successPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 20px rgba(76, 175, 80, 0.3);
    }
    100% {
        transform: scale(1);
    }
}

/* Enhanced Message Status with Animation */
.message-status.status-sent {
    animation: fadeInSuccess 0.3s ease;
}

@keyframes fadeInSuccess {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Mobile Adjustments for New Features */
@media (max-width: 768px) {
    .wait-time-estimate {
        font-size: 12px;
        padding: var(--spacing-sm);
    }
    
    .wait-time-estimate .estimate-icon {
        font-size: 16px;
    }
}

/* Reduced Motion Support for New Animations */
@media (prefers-reduced-motion: reduce) {
    .message-bubble.success-animation,
    .message-status.status-sent,
    .wait-time-estimate {
        animation: none;
    }
    
    .wait-time-estimate.show {
        transition: opacity 0.1s ease;
    }
}

/* Mobile Interaction Enhancements - Task 28.1 */

/* Pull to Refresh Indicator */
.pull-to-refresh-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    transition: height 0.3s ease, opacity 0.3s ease;
    height: 0;
    opacity: 0;
}

.pull-to-refresh-indicator .refresh-icon {
    font-size: 24px;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.pull-to-refresh-indicator .refresh-text {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Swipe Gesture Actions */
.message.user {
    position: relative;
    overflow: visible;
}

.swipe-action-indicator {
    position: absolute;
    top: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    z-index: -1;
    pointer-events: none;
}

.swipe-action-indicator.delete {
    background-color: #f44336;
    color: white;
    right: 0;
    border-radius: 16px 0 0 16px;
}

.swipe-action-indicator.copy {
    background-color: #4caf50;
    color: white;
    left: 0;
    border-radius: 0 16px 16px 0;
}

.swipe-action-indicator .action-icon {
    font-size: 20px;
}

.swipe-action-indicator .action-text {
    font-weight: 600;
    font-size: 14px;
}

/* Touch Target Optimization */
button,
a,
input,
textarea,
[role="button"] {
    min-height: 44px;
    min-width: 44px;
}

.expand-icon,
.status-icon,
.toast-icon {
    padding: 8px;
    cursor: pointer;
}

/* Touch Feedback */
button:active,
.scheme-action-btn:active,
.learn-more-toggle:active,
[role="button"]:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
}

/* Mobile-specific adjustments */
@media (max-width: 768px) {
    /* Larger touch targets on mobile */
    .send-button {
        width: 60px;
        height: 60px;
    }
    
    .language-toggle {
        min-width: 70px;
        min-height: 48px;
    }
    
    /* Better spacing for swipe gestures */
    .message {
        margin: var(--spacing-sm) 0;
    }
    
    /* Optimize pull-to-refresh for mobile */
    .pull-to-refresh-indicator {
        max-height: 80px;
    }
}

/* Haptic feedback visual indicator (optional) */
@keyframes hapticPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(46, 125, 50, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(46, 125, 50, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(46, 125, 50, 0);
    }
}

button.haptic-active {
    animation: hapticPulse 0.3s ease;
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .pull-to-refresh-indicator .refresh-icon,
    .swipe-action-indicator,
    button:active {
        transition: none;
        animation: none;
    }
    
    button:active {
        transform: none;
    }
}

/* Low-Bandwidth Optimizations - Task 28.2 */

/* Data Saver Toggle */
.data-saver-toggle {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 50px;
    min-height: 44px;
    margin-right: var(--spacing-sm);
}

.data-saver-toggle:hover,
.data-saver-toggle:focus {
    background-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
    outline: 2px solid white;
    outline-offset: 2px;
}

.data-saver-toggle:active {
    transform: scale(0.98);
}

/* Data Usage Indicator */
.data-usage-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(46, 125, 50, 0.05);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.data-usage-indicator .usage-icon {
    font-size: 14px;
}

.data-usage-indicator .usage-text {
    font-weight: 500;
}

/* Progressive Loading Indicator */
.load-more-indicator {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 14px;
}

.load-more-indicator button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.load-more-indicator button:hover {
    background-color: var(--primary-dark);
}

/* Image Lazy Loading */
img[data-src] {
    background-color: var(--background);
    min-height: 100px;
}

img.lazy-loading {
    opacity: 0.5;
    filter: blur(5px);
    transition: opacity 0.3s ease, filter 0.3s ease;
}

img.lazy-loaded {
    opacity: 1;
    filter: blur(0);
}

/* Data Saver Mode Styles */
body.data-saver-mode .message-bubble {
    box-shadow: none;
}

body.data-saver-mode .scheme-card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body.data-saver-mode .toast {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Reduced animations in data saver mode */
body.data-saver-mode * {
    animation-duration: 0.1s !important;
    transition-duration: 0.1s !important;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .data-saver-toggle {
        min-width: 44px;
        padding: var(--spacing-sm);
    }
    
    .data-usage-indicator {
        font-size: 11px;
    }
    
    .data-usage-indicator .usage-icon {
        font-size: 12px;
    }
}

/* Low bandwidth connection indicator */
.connection-status.slow {
    background-color: #fff3e0;
}

.connection-status.slow .status-dot {
    background-color: #ff9800;
}

.connection-status.slow .status-text {
    color: #ff9800;
}

/* Mobile-Specific UI Improvements - Task 28.3 */

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: calc(var(--input-area-height) + var(--spacing-lg));
    right: var(--spacing-lg);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: all 0.3s ease;
}

.fab:hover {
    background-color: var(--primary-dark);
    transform: scale(1.1);
}

.fab:active {
    transform: scale(0.95);
}

.fab.active {
    background-color: var(--error);
}

.fab .fab-icon {
    font-size: 28px;
    font-weight: 300;
    transition: transform 0.3s ease;
}

/* FAB Menu */
.fab-menu {
    position: fixed;
    bottom: calc(var(--input-area-height) + var(--spacing-lg) + 70px);
    right: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 999;
}

.fab-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface);
    border: none;
    border-radius: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    transform: scale(0.8);
    white-space: nowrap;
}

.fab-menu-item:hover {
    background-color: var(--background);
    transform: scale(1.05);
}

.fab-menu-item:active {
    transform: scale(0.95);
}

.fab-menu-icon {
    font-size: 20px;
}

.fab-menu-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Bottom Sheet */
.bottom-sheet-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.bottom-sheet-overlay.active {
    opacity: 1;
}

.bottom-sheet {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 90vh;
    background-color: var(--surface);
    border-radius: 20px 20px 0 0;
    display: flex;
    flex-direction: column;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.bottom-sheet.active {
    transform: translateY(0);
}

.bottom-sheet-handle {
    width: 40px;
    height: 4px;
    background-color: var(--border);
    border-radius: 2px;
    margin: var(--spacing-md) auto var(--spacing-sm);
    cursor: grab;
}

.bottom-sheet-handle:active {
    cursor: grabbing;
}

.bottom-sheet-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.bottom-sheet-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    flex: 1;
    padding-right: var(--spacing-md);
}

.bottom-sheet-close {
    background-color: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.bottom-sheet-close:hover {
    background-color: var(--background);
    color: var(--text-primary);
}

.bottom-sheet-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

/* Safe Area Insets */
:root {
    --safe-area-top: 0px;
    --safe-area-bottom: 0px;
    --safe-area-left: 0px;
    --safe-area-right: 0px;
}

@supports (padding-top: env(safe-area-inset-top)) {
    :root {
        --safe-area-top: env(safe-area-inset-top);
        --safe-area-bottom: env(safe-area-inset-bottom);
        --safe-area-left: env(safe-area-inset-left);
        --safe-area-right: env(safe-area-inset-right);
    }
}

.header {
    padding-top: calc(var(--spacing-md) + var(--safe-area-top));
    padding-left: calc(var(--spacing-md) + var(--safe-area-left));
    padding-right: calc(var(--spacing-md) + var(--safe-area-right));
}

.input-area {
    padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom));
    padding-left: calc(var(--spacing-md) + var(--safe-area-left));
    padding-right: calc(var(--spacing-md) + var(--safe-area-right));
}

/* Screen Size Indicator (Debug Mode) */
.screen-size-indicator {
    position: fixed;
    top: calc(var(--header-height) + 10px);
    left: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-family: monospace;
    z-index: 9999;
    pointer-events: none;
}

/* Responsive Font Sizes */
@media (max-width: 320px) {
    :root {
        --font-size-base: 14px;
        --font-size-lg: 16px;
        --font-size-xl: 18px;
        --font-size-xxl: 20px;
    }
}

@media (min-width: 321px) and (max-width: 375px) {
    :root {
        --font-size-base: 15px;
        --font-size-lg: 17px;
        --font-size-xl: 19px;
        --font-size-xxl: 22px;
    }
}

@media (min-width: 376px) and (max-width: 428px) {
    :root {
        --font-size-base: 16px;
        --font-size-lg: 18px;
        --font-size-xl: 20px;
        --font-size-xxl: 24px;
    }
}

/* Mobile-specific adjustments for various screen sizes */
@media (max-width: 320px) {
    .header-title {
        font-size: 16px;
    }
    
    .message-bubble {
        padding: var(--spacing-sm);
    }
    
    .scheme-card {
        padding: var(--spacing-sm);
    }
    
    .fab {
        width: 48px;
        height: 48px;
        bottom: calc(var(--input-area-height) + var(--spacing-md));
        right: var(--spacing-md);
    }
    
    .fab .fab-icon {
        font-size: 24px;
    }
    
    .send-button {
        width: 48px;
        height: 48px;
    }
}

@media (min-width: 321px) and (max-width: 375px) {
    .header-title {
        font-size: 18px;
    }
}

@media (min-width: 376px) and (max-width: 428px) {
    .header-title {
        font-size: 20px;
    }
}

/* Landscape mode adjustments */
@media (max-height: 500px) and (orientation: landscape) {
    .header {
        height: 50px;
    }
    
    .header-title {
        font-size: 16px;
    }
    
    .input-area {
        padding: var(--spacing-sm);
    }
    
    .message-input {
        max-height: 80px;
    }
    
    .fab {
        bottom: calc(var(--spacing-lg) + 60px);
    }
    
    .bottom-sheet {
        max-height: 80vh;
    }
}

/* High DPI screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .message-bubble {
        box-shadow: 0 0.5px 1px rgba(0, 0, 0, 0.1);
    }
    
    .scheme-card {
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    .bottom-sheet {
        background-color: #1e1e1e;
    }
    
    .bottom-sheet-handle {
        background-color: #444;
    }
    
    .fab-menu-item {
        background-color: #2a2a2a;
        color: #fff;
    }
    
    .fab-menu-label {
        color: #fff;
    }
}

/* Accessibility - High Contrast Mode */
@media (prefers-contrast: high) {
    .fab {
        border: 2px solid white;
    }
    
    .bottom-sheet {
        border: 2px solid var(--border);
    }
    
    .fab-menu-item {
        border: 1px solid var(--border);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .fab,
    .fab .fab-icon,
    .fab-menu-item,
    .bottom-sheet,
    .bottom-sheet-overlay {
        transition: none;
        animation: none;
    }
    
    .bottom-sheet.active {
        transform: translateY(0);
    }
}

/* ============================================
   ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 10000;
    font-weight: 600;
    border-radius: 0 0 4px 0;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid white;
    outline-offset: 2px;
}

/* Visually hidden but accessible to screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible for better keyboard navigation */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Enhanced focus for interactive elements */
button:focus-visible,
a:focus-visible,
textarea:focus-visible,
input:focus-visible,
[role="button"]:focus-visible,
[role="menuitem"]:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(46, 125, 50, 0.1);
}

/* Ensure sufficient color contrast for focus */
.language-toggle:focus-visible {
    outline: 3px solid white;
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.3);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #1b5e20;
        --text-primary: #000000;
        --text-secondary: #424242;
        --border: #000000;
    }
    
    .message-bubble {
        border: 2px solid var(--border);
    }
    
    .send-button,
    .language-toggle,
    .fab {
        border: 2px solid white;
    }
    
    .scheme-card {
        border: 3px solid var(--primary-color);
    }
    
    button:focus-visible {
        outline: 4px solid var(--primary-color);
        outline-offset: 3px;
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .skip-link {
        transition: none;
    }
}

/* Ensure text remains visible during webfont load */
@font-face {
    font-display: swap;
}

/* Improve text readability */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Ensure minimum touch target size (44x44px) */
button,
a,
input,
textarea,
[role="button"],
[role="menuitem"] {
    min-height: 44px;
    min-width: 44px;
}

/* Exception for inline elements */
.message-text button,
.message-text a {
    min-height: auto;
    min-width: auto;
}

/* Improve readability with proper line height */
p,
li,
.message-text {
    line-height: 1.5;
}

/* Ensure sufficient spacing for readability */
.message-text {
    letter-spacing: 0.01em;
    word-spacing: 0.05em;
}

/* Support for user text size preferences */
@media (min-width: 320px) {
    html {
        font-size: 16px; /* Base size */
    }
}

/* Allow text to scale up to 200% */
@media (min-width: 320px) and (max-width: 768px) {
    html {
        font-size: calc(16px + (18 - 16) * ((100vw - 320px) / (768 - 320)));
    }
}

/* Ensure content reflows without horizontal scrolling */
.message-text,
.scheme-summary,
.scheme-section {
    max-width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
}

/* ARIA live region styling */
[aria-live="polite"],
[aria-live="assertive"] {
    position: relative;
}

/* Status messages should be announced but not intrusive */
[role="status"] {
    position: relative;
}

/* Ensure modals trap focus properly */
[role="dialog"],
[aria-modal="true"] {
    position: fixed;
    z-index: 2000;
}

/* Improve contrast for disabled elements */
button:disabled,
input:disabled,
textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Ensure error messages are clearly visible */
.error-message,
[role="alert"] {
    color: var(--error);
    font-weight: 600;
    padding: var(--spacing-sm);
    border-left: 4px solid var(--error);
    background-color: rgba(211, 47, 47, 0.1);
}

/* Success messages */
.success-message {
    color: #2e7d32;
    font-weight: 600;
    padding: var(--spacing-sm);
    border-left: 4px solid #2e7d32;
    background-color: rgba(46, 125, 50, 0.1);
}

/* Ensure links are distinguishable */
a {
    color: var(--primary-color);
    text-decoration: underline;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

a:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    text-decoration: none;
}

/* Improve form field accessibility */
input:invalid,
textarea:invalid {
    border-color: var(--error);
}

input:valid,
textarea:valid {
    border-color: var(--border);
}

/* Required field indicator */
[required]::after {
    content: " *";
    color: var(--error);
}

/* Ensure proper heading hierarchy */
h1 {
    font-size: var(--font-size-xxl);
    font-weight: 600;
    line-height: 1.2;
}

h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    line-height: 1.3;
}

h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.4;
}

/* Ensure tables are accessible */
table {
    border-collapse: collapse;
    width: 100%;
}

th {
    text-align: left;
    font-weight: 600;
}

/* Improve list accessibility */
ul,
ol {
    padding-left: 1.5em;
}

li {
    margin: 0.5em 0;
}

/* Ensure images are accessible */
img {
    max-width: 100%;
    height: auto;
}

img:not([alt]) {
    outline: 3px solid var(--error);
}

/* Print styles for accessibility */
@media print {
    .skip-link,
    .fab,
    .fab-menu,
    .loading-indicator,
    .connection-status,
    .toast-container {
        display: none !important;
    }
    
    .chat-container {
        overflow: visible;
        height: auto;
    }
    
    .message-bubble {
        page-break-inside: avoid;
    }
    
    a {
        text-decoration: underline;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
    }
}

/* Ensure proper color contrast in all states */
button:hover:not(:disabled) {
    filter: brightness(0.9);
}

button:active:not(:disabled) {
    filter: brightness(0.8);
}

/* Improve visibility of placeholder text */
::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Ensure selection is visible */
::selection {
    background-color: var(--primary-color);
    color: white;
}

::-moz-selection {
    background-color: var(--primary-color);
    color: white;
}

/* Support for forced colors mode (Windows High Contrast) */
@media (forced-colors: active) {
    button {
        border: 2px solid ButtonText;
    }
    
    .message-bubble {
        border: 1px solid CanvasText;
    }
    
    .skip-link:focus {
        outline: 2px solid Highlight;
    }
}

/* Ensure proper spacing for touch targets on mobile */
@media (max-width: 768px) {
    button,
    a,
    [role="button"] {
        min-height: 48px;
        min-width: 48px;
        padding: var(--spacing-md);
    }
    
    .send-button {
        width: 56px;
        height: 56px;
    }
    
    .language-toggle {
        min-height: 48px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* Ensure proper focus management for modals */
body.modal-open {
    overflow: hidden;
}

[aria-modal="true"] {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* Improve keyboard navigation visibility */
:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Remove outline for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* Ensure proper contrast for all text */
.text-primary {
    color: var(--text-primary);
}

.text-secondary {
    color: var(--text-secondary);
}

/* Ensure proper spacing between interactive elements */
button + button,
a + a,
[role="button"] + [role="button"] {
    margin-left: var(--spacing-sm);
}

/* Vertical spacing */
button + button:not(.inline),
a + a:not(.inline) {
    margin-left: 0;
    margin-top: var(--spacing-sm);
}

/* Ensure proper heading spacing */
h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 1em;
    margin-bottom: 0.5em;
}

h1:first-child,
h2:first-child,
h3:first-child {
    margin-top: 0;
}

/* Improve readability of long text */
.message-text,
.scheme-summary,
p {
    max-width: 70ch;
}

/* Ensure proper list styling */
ul,
ol {
    margin: 1em 0;
}

/* Improve table accessibility */
caption {
    font-weight: 600;
    text-align: left;
    padding: var(--spacing-sm) 0;
}

/* Ensure proper form layout */
label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

/* Improve input field accessibility */
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* Ensure proper button styling */
button {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
}

/* Improve link accessibility */
a:not([class]) {
    text-decoration-skip-ink: auto;
}

/* Ensure proper focus for custom controls */
[tabindex="0"]:focus-visible,
[tabindex="-1"]:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Improve visibility of required fields */
[aria-required="true"]::before,
[required]::before {
    content: "* ";
    color: var(--error);
    font-weight: bold;
}

/* Ensure proper error message association */
[aria-invalid="true"] {
    border-color: var(--error);
    border-width: 2px;
}

[aria-describedby] + .error-message {
    margin-top: var(--spacing-xs);
}

/* Improve visibility of loading states */
[aria-busy="true"] {
    opacity: 0.6;
    pointer-events: none;
}

/* Ensure proper announcement of dynamic content */
[aria-live="polite"] {
    position: relative;
}

[aria-live="assertive"] {
    position: relative;
}

/* Improve visibility of expanded/collapsed states */
[aria-expanded="true"] .expand-icon {
    transform: rotate(90deg);
}

[aria-expanded="false"] .expand-icon {
    transform: rotate(0deg);
}

/* Ensure proper button states */
[aria-pressed="true"] {
    background-color: var(--primary-dark);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

[aria-pressed="false"] {
    background-color: var(--primary-color);
}

/* Improve visibility of selected items */
[aria-selected="true"] {
    background-color: rgba(46, 125, 50, 0.1);
    border-left: 4px solid var(--primary-color);
}

/* Ensure proper menu accessibility */
[role="menu"] {
    list-style: none;
    padding: 0;
    margin: 0;
}

[role="menuitem"] {
    display: block;
    width: 100%;
    text-align: left;
}

/* Improve visibility of current page/location */
[aria-current="page"],
[aria-current="location"] {
    font-weight: 600;
    color: var(--primary-color);
}

/* Ensure proper dialog accessibility */
[role="dialog"] {
    position: fixed;
    z-index: 2000;
}

[role="dialog"] [role="document"] {
    position: relative;
}

/* Improve visibility of alerts */
[role="alert"] {
    padding: var(--spacing-md);
    border-radius: 8px;
    font-weight: 500;
}

/* Ensure proper status message styling */
[role="status"] {
    padding: var(--spacing-sm);
    border-radius: 4px;
}

/* Improve visibility of progress indicators */
[role="progressbar"] {
    height: 4px;
    background-color: var(--border);
    border-radius: 2px;
    overflow: hidden;
}

[role="progressbar"]::before {
    content: "";
    display: block;
    height: 100%;
    background-color: var(--primary-color);
    width: var(--progress-value, 0%);
    transition: width 0.3s ease;
}

/* Ensure proper landmark accessibility */
[role="banner"],
[role="main"],
[role="contentinfo"],
[role="navigation"],
[role="complementary"] {
    position: relative;
}

/* Improve visibility of search landmarks */
[role="search"] {
    position: relative;
}

/* Ensure proper form accessibility */
[role="form"] {
    position: relative;
}

/* Improve visibility of region landmarks */
[role="region"][aria-labelledby] {
    position: relative;
}

/* End of Accessibility Enhancements */

/* Ensure proper button sizing on mobile */
@media (max-width: 768px) {
    .send-button {
        width: 48px;
        height: 48px;
    }
}

/* Fix for app container to ensure proper height */
.app-container {
    height: calc(100vh - var(--header-height));
    overflow: hidden;
}

/* Ensure main content takes available space */
.main-content {
    height: 100%;
    overflow: hidden;
}

/* Ensure chat container scrolls properly */
.chat-container {
    height: calc(100% - var(--input-area-height) - 100px);
    overflow-y: auto;
}

/* Fix input area positioning */
.input-area {
    position: relative;
    bottom: 0;
    width: 100%;
}

/* Ensure panels don't overflow */
.sidebar,
.info-panel {
    height: 100%;
    overflow-y: auto;
}

/* Mobile overlay fix */
@media (max-width: 768px) {
    .app-container {
        position: relative;
    }
    
    .sidebar,
    .info-panel {
        position: fixed;
        height: calc(100vh - var(--header-height));
        z-index: 999;
    }
    
    .sidebar {
        left: 0;
        top: var(--header-height);
    }
    
    .info-panel {
        right: 0;
        top: var(--header-height);
    }
    
    .main-content {
        width: 100%;
    }
}

/* Ensure proper z-index stacking */
.header {
    z-index: 1000;
}

.sidebar,
.info-panel {
    z-index: 999;
}

.fab {
    z-index: 998;
}

.fab-menu {
    z-index: 997;
}

.scheme-modal,
.bottom-sheet-overlay {
    z-index: 2000;
}

/* Fix for collapsed sidebar and hidden info panel */
.sidebar.collapsed {
    transform: translateX(-100%);
}

.info-panel.hidden {
    transform: translateX(100%);
}

/* Smooth transitions */
.sidebar,
.info-panel {
    transition: transform 0.3s ease;
}

/* Ensure content is visible during transitions */
.sidebar *,
.info-panel * {
    visibility: visible;
}

.sidebar.collapsed *,
.info-panel.hidden * {
    visibility: hidden;
}