/* styles.css - Production Ready v3.0.3 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Material Dark theme colors */
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2d2d2d;
    --bg-hover: #383838;
    --bg-surface: #252525;
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #888888;
    
    --border-color: #404040;
    
    --accent-primary: #64b5f6;
    --accent-secondary: #1565c0;
    --accent-primary-alpha: rgba(100, 181, 246, 0.2);
    
    --user-message-bg-start: #64b5f6;
    --user-message-bg-end: #1565c0;
    --user-message-text: #ffffff;
    
    --ai-message-bg: #1e1e1e;
    --ai-message-text: #e0e0e0;
    --ai-message-border: transparent;
    
    --error-bg: #2a1a1a;
    --error-text: #f44336;
    --error-border: #f44336;
    
    --success-bg: #1a2a1a;
    --success-text: #4caf50;
    
    --warning-bg: #2a2a1a;
    --warning-text: #ff9800;
    
    --code-bg: #2d2d2d;
    --code-border: #404040;
    --code-text: #e2e8f0;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e0e0e0;
    --bg-hover: #d6d6d6;
    --bg-surface: #f0f0f0;
    
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #888888;
    
    --border-color: #cccccc;
    
    --accent-primary: #1976d2;
    --accent-secondary: #0d47a1;
    --accent-primary-alpha: rgba(25, 118, 210, 0.15);
    
    --user-message-bg-start: #1976d2;
    --user-message-bg-end: #0d47a1;
    --user-message-text: #ffffff;
    
    --ai-message-bg: #f5f5f5;
    --ai-message-text: #333333;
    --ai-message-border: transparent;
    
    --error-bg: #ffeaea;
    --error-text: #d32f2f;
    --error-border: #d32f2f;
    
    --success-bg: #e8f5e8;
    --success-text: #2e7d32;
    
    --warning-bg: #fff8e1;
    --warning-text: #f57c00;
    
    --code-bg: #f5f5f5;
    --code-border: #dddddd;
    --code-text: #1a1a1a;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    touch-action: pan-y;
    font-weight: 400;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    transition: var(--transition);
    background: var(--bg-primary);
}

/* Preloader Styles */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.preloader-logo {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

.preloader-logo i {
    font-size: 48px;
    color: var(--accent-primary);
}

.preloader-spinner {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: spin 1s linear infinite;
}

.preloader-spinner i {
    font-size: 24px;
    color: var(--accent-primary);
}

.preloader-text {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 10px;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

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

/* 404 Page Styles */
.page-404 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.error-container {
    text-align: center;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.error-logo {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.error-logo i {
    font-size: 64px;
    color: var(--accent-primary);
}

.error-container h1 {
    color: var(--text-primary);
    font-size: 24px;
    margin-bottom: 10px;
    font-weight: 500;
}

.error-container p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 30px;
}

.error-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    font-weight: 500;
    text-transform: none;
}

.error-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Header */
.app-header {
    padding: 12px 20px;
    padding-top: calc(12px + env(safe-area-inset-top, 0px));
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    height: 64px;
    z-index: 100;
    position: relative;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 16px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    background: var(--accent-primary-alpha);
}

.logo i {
    font-size: 20px;
    color: var(--accent-primary);
}

.logo:hover {
    transform: scale(1.05);
    background: var(--accent-primary);
}

.logo:hover i {
    color: white;
}

/* Model Select Button */
.model-select-btn {
    margin-right: 8px;
    flex-shrink: 0;
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 18px;
}

.model-select-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* Header Search */
.header-search-container {
    flex: 1;
    margin: 0 20px;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    height: 40px;
}

.search-wrapper i {
    position: absolute;
    left: 12px;
    color: var(--text-tertiary);
    z-index: 1;
    font-size: 16px;
}

.search-wrapper input {
    width: 100%;
    height: 40px;
    padding: 8px 40px 8px 36px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
    font-weight: 400;
}

.search-wrapper input:focus {
    background: var(--bg-hover);
    box-shadow: 0 0 0 2px var(--accent-primary-alpha);
}

.search-wrapper input::placeholder {
    color: var(--text-tertiary);
}

.search-clear {
    position: absolute;
    right: 8px;
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    font-size: 14px;
}

.search-clear:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Header Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
}

.control-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    width: 40px;
    flex-shrink: 0;
}

.control-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* Chat area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    background: var(--bg-primary);
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    scroll-behavior: smooth;
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    transition: var(--transition);
}

/* Custom scrollbar for messages */
.messages-container::-webkit-scrollbar {
    width: 8px;
}

.messages-container::-webkit-scrollbar-track {
    background: transparent;
}

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

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

/* Floating Particles */
.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-particle {
    position: absolute;
    font-size: 24px;
    opacity: 0.1;
    animation: float-particle 15s infinite linear;
    user-select: none;
    pointer-events: none;
}

@keyframes float-particle {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.1;
    }
    25% {
        transform: translate(20px, -20px) rotate(90deg);
        opacity: 0.15;
    }
    50% {
        transform: translate(40px, 10px) rotate(180deg);
        opacity: 0.1;
    }
    75% {
        transform: translate(20px, 30px) rotate(270deg);
        opacity: 0.15;
    }
    100% {
        transform: translate(0, 0) rotate(360deg);
        opacity: 0.1;
    }
}

/* Minimap and navigation */
.chat-minimap-container {
    position: absolute;
    right: 20px;
    top: 20px;
    bottom: 180px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 10;
    width: 32px;
    align-items: center;
    height: calc(100vh - 280px);
}

.minimap-header {
    display: flex;
    justify-content: center;
    margin-bottom: 0;
    order: 1;
}

.chat-minimap {
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    order: 2;
    flex: 1;
}

.minimap-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    transition: transform 0.1s ease;
}

.minimap-message {
    width: 90%;
    margin: 2px auto;
    background: var(--border-color);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    cursor: pointer;
    height: 8px;
    min-height: 4px;
    border-left: 3px solid transparent;
}

.minimap-message.user {
    background: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

.minimap-message.ai {
    background: var(--text-tertiary);
    border-left-color: var(--text-tertiary);
}

.minimap-message:hover {
    transform: scale(1.1);
    z-index: 2;
}

.minimap-message.search-highlighted {
    background: var(--accent-primary) !important;
    border-left-color: var(--accent-primary) !important;
    box-shadow: 0 0 3px var(--accent-primary);
}

.minimap-viewport {
    position: absolute;
    left: 0;
    width: 100%;
    background: rgba(100, 181, 246, 0.3);
    border: 1px solid var(--accent-primary);
    border-radius: 2px;
    pointer-events: none;
    transition: top 0.1s ease, height 0.1s ease;
}

.minimap-navigation {
    display: flex;
    flex-direction: column;
    gap: 8px;
    order: 3;
    margin-bottom: 0;
}

.nav-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    box-shadow: var(--shadow-sm);
    opacity: 0.9;
}

.nav-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
    opacity: 1;
}

.nav-btn.active {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
    opacity: 1;
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

.nav-btn:disabled:hover {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    transform: none;
}

/* Message Styles - Material Design */
.message {
    max-width: 80%;
    padding: 16px 20px;
    border-radius: var(--radius-xl);
    line-height: 1.6;
    animation: fadeIn 0.3s ease;
    position: relative;
    font-size: 14px;
    word-wrap: break-word;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
}

.message:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.message-user {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--user-message-bg-start), var(--user-message-bg-end));
    color: var(--user-message-text);
    margin-left: auto;
    box-shadow: var(--shadow-md);
}

.message-ai {
    align-self: flex-start;
    background: var(--ai-message-bg);
    color: var(--ai-message-text);
    border: none;
    margin-right: auto;
    box-shadow: var(--shadow-sm);
}

.message-error {
    align-self: flex-start;
    background: var(--error-bg);
    color: var(--error-text);
    border: none;
}

.message-image {
    max-width: 300px;
    margin-top: 12px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.message-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

/* Welcome message styles */
.welcome-content {
    max-width: 600px;
    margin: 0 auto 20px;
    padding: 20px;
    background: var(--ai-message-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    border: 1px solid var(--border-color);
}

.welcome-content h1 {
    color: var(--accent-primary);
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.welcome-content p {
    margin-bottom: 8px;
    font-size: 14px;
}

.welcome-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

.welcome-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.welcome-feature:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.welcome-feature i {
    font-size: 20px;
    color: var(--accent-primary);
}

.welcome-feature span {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
}

.welcome-actions {
    margin-top: 16px;
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.welcome-action-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.welcome-action-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.welcome-action-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.welcome-action-btn.secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.welcome-content.hidden {
    display: none;
}

/* Markdown Styles */
.message-content {
    line-height: 1.6;
}

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin: 1.2em 0 0.6em 0;
    font-weight: 500;
    line-height: 1.3;
}

.message-content h1 {
    font-size: 1.5em;
    padding-bottom: 0.3em;
}

.message-content h2 {
    font-size: 1.3em;
}

.message-content h3 {
    font-size: 1.1em;
}

.message-content p {
    margin: 0.8em 0;
}

.message-content ul,
.message-content ol {
    margin: 0.8em 0;
    padding-left: 1.5em;
}

.message-content li {
    margin: 0.3em 0;
}

.message-content blockquote {
    margin: 1em 0;
    padding: 0.5em 1em;
    border-left: 4px solid var(--accent-primary);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-style: italic;
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
}

.message-content th,
.message-content td {
    padding: 0.5em;
    border: 1px solid var(--border-color);
    text-align: left;
}

.message-content th {
    background: var(--bg-secondary);
    font-weight: 500;
}

.message-content strong {
    font-weight: 500;
    color: var(--text-primary);
}

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

.message-content code {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-family: 'Roboto Mono', 'Monaco', 'Menlo', monospace;
    font-size: 0.9em;
    border: 1px solid var(--code-border);
}

.message-content pre {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: var(--radius-md);
    padding: 1em;
    margin: 1em 0;
    overflow-x: auto;
    position: relative;
}

.message-content pre code {
    background: none;
    border: none;
    padding: 0;
    border-radius: 0;
    color: inherit;
    font-size: 0.9em;
    line-height: 1.4;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8em;
    padding-bottom: 0.5em;
    border-bottom: 1px solid var(--code-border);
}

.code-language {
    font-size: 0.8em;
    color: var(--text-tertiary);
    font-weight: 500;
}

.copy-code-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    padding: 0.4em 0.8em;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75em;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.3em;
}

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

.copy-code-btn.copied {
    background: var(--success-bg);
    color: var(--success-text);
}

/* Highlight.js overrides */
.hljs {
    background: transparent !important;
    padding: 0 !important;
}

/* Model indicator in messages */
.model-indicator {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 12px;
    font-style: italic;
    padding-top: 8px;
}

/* Message actions */
.message-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 12px;
    justify-content: flex-start;
    flex-wrap: wrap;
    align-items: center;
}

.action-btn-small {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 11px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    height: 28px;
    font-weight: 500;
}

.action-btn-small:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.action-btn-small:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Download file buttons */
.download-file-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 11px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.download-file-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* Speak button styles */
.speak-btn.speaking {
    background: var(--accent-primary-alpha) !important;
    color: var(--accent-primary) !important;
    animation: gentlePulse 2s ease-in-out infinite;
}

.speak-btn.speaking:hover {
    background: var(--error-bg) !important;
    color: var(--error-text) !important;
    animation: none;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    background: var(--ai-message-bg);
    border-radius: var(--radius-xl);
    max-width: 80%;
    align-self: flex-start;
}

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

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

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

.typing-indicator-inline {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 12px;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.typing-indicator-inline.fade-out {
    opacity: 0;
}

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

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

@keyframes gentlePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Input area */
.input-section {
    padding: 16px 24px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    position: relative;
}

/* Mode indicator */
.mode-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
    padding: 0 8px;
    opacity: 0.8;
    justify-content: center;
    font-weight: 500;
}

.mode-indicator i {
    font-size: 14px;
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    align-items: center;
}

.attach-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 20px;
    flex-shrink: 0;
    align-self: center;
    position: relative;
}

.attach-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

#userInput {
    flex: 1;
    padding: 16px 120px 16px 16px;
    border: none;
    border-radius: var(--radius-xl);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.5;
    resize: none;
    outline: none;
    transition: var(--transition);
    min-height: 56px;
    max-height: 120px;
    overflow-y: auto;
    font-family: inherit;
    font-weight: 400;
}

#userInput:focus {
    background: var(--bg-hover);
    box-shadow: 0 0 0 2px var(--accent-primary-alpha);
}

#userInput::placeholder {
    color: var(--text-tertiary);
    font-size: 14px;
}

.input-controls {
    position: absolute;
    right: 16px;
    bottom: 12px;
    display: flex;
    gap: 8px;
    align-items: center;
}

.input-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 16px;
}

.input-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.send-btn {
    background: var(--accent-primary);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 16px;
}

.send-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px) scale(1.05);
}

.send-btn:disabled {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    cursor: not-allowed;
    transform: none;
}

.send-btn.stop-generation {
    background: var(--error-bg);
    color: var(--error-text);
}

.send-btn.stop-generation:hover {
    background: var(--error-text);
    color: white;
}

/* Mode-specific input section colors */
.input-section.voice-mode-active {
    background: var(--success-bg) !important;
}

.input-section.image-mode-active {
    background: var(--warning-bg) !important;
}

.voice-mode-active #userInput {
    box-shadow: 0 0 0 2px var(--success-text);
}

.image-mode-active #userInput {
    box-shadow: 0 0 0 2px var(--warning-text);
}

/* Attached files */
.attached-files {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.attached-file {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 250px;
    transition: var(--transition);
}

.attached-file:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
}

.attached-file i {
    font-size: 16px;
}

.remove-file-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

.remove-file-btn:hover {
    background: var(--error-bg);
    color: var(--error-text);
}

/* Action buttons */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    flex-wrap: wrap;
}

.action-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    flex-shrink: 0;
    min-width: auto;
    max-width: none;
    font-weight: 500;
}

.action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.action-btn:disabled:hover {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Mode buttons */
.mode-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mode-btn.active {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
    flex: 1;
}

.mode-btn:not(.active) {
    width: 48px;
    padding: 8px;
    justify-content: center;
}

.mode-btn:not(.active) .btn-text {
    display: none;
}

.mode-btn.active .btn-text {
    display: inline;
}

.mode-btn#generateVoiceBtn.active {
    background: var(--success-bg);
    color: var(--success-text);
}

.mode-btn#generateImageBtn.active {
    background: var(--warning-bg);
    color: var(--warning-text);
}

/* Footer */
.app-footer {
    padding: 12px 24px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    height: 56px;
    position: relative;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
}

.current-chat-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.connection-status i {
    color: var(--success-text);
    font-size: 8px;
}

/* Footer Controls */
.footer-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 18px;
}

.footer-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* Sidebar Menu */
.sidebar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 360px;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-primary);
    z-index: 1000;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    border-left: 1px solid var(--border-color);
}

.sidebar-menu.active {
    right: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.sidebar-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sidebar-logo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary-alpha);
}

.sidebar-logo i {
    font-size: 24px;
    color: var(--accent-primary);
}

.sidebar-header h3 {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
}

.sidebar-close {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 20px;
}

.sidebar-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* PWA Install Button in Sidebar */
.pwa-install-section {
    margin-bottom: 16px;
}

.pwa-install-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: var(--shadow-md);
    position: relative;
}

.pwa-install-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.pwa-install-btn .badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
}

.pwa-install-btn-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.pwa-install-btn-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Sidebar Search */
.sidebar-search-container {
    margin-bottom: 16px;
}

.sidebar-search-container .search-wrapper {
    position: relative;
}

.sidebar-search-container .search-wrapper input {
    background: var(--bg-tertiary);
    border: none;
}

.sidebar-search-container .search-wrapper input:focus {
    background: var(--bg-hover);
}

/* Chat List */
.sidebar-section h4 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    max-height: 400px;
    overflow-y: auto;
}

.chat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
}

.chat-item:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
}

.chat-item.active {
    background: var(--accent-primary-alpha);
}

.chat-item-content {
    flex: 1;
    min-width: 0;
}

.chat-item-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.chat-item-preview {
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-item-actions {
    display: flex;
    gap: 4px;
    opacity: 1;
    transition: var(--transition);
}

.chat-item-action {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
}

.chat-item-action:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.chat-item-action.download-chat:hover {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
}

.chat-item-action.edit:hover {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
}

.chat-item-action.delete:hover {
    background: var(--error-bg);
    color: var(--error-text);
}

.chat-management-buttons {
    display: flex;
    gap: 12px;
    flex-direction: column;
}

.sidebar-btn {
    flex: 1;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
}

.sidebar-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.sidebar-btn.primary {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
}

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

.sidebar-btn.danger {
    background: var(--error-bg);
    color: var(--error-text);
}

.sidebar-btn.danger:hover {
    background: var(--error-text);
    color: white;
}

/* About section */
.about-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.about-item strong {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.about-item span {
    font-size: 13px;
    color: var(--text-tertiary);
    line-height: 1.4;
}

/* Sidebar Links */
.sidebar-links {
    margin-top: auto;
    padding: 20px 0;
    text-align: center;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 20px;
}

.link-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    text-align: left;
}

.link-item:hover {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    text-decoration: none;
}

.counters {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.github-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    margin-bottom: 20px;
    text-decoration: none;
}

.github-link:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
    text-decoration: none;
}

.github-link i {
    font-size: 20px;
    color: var(--text-secondary);
}

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

.watermark {
    color: var(--text-tertiary);
    font-size: 11px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.copyright {
    color: var(--text-tertiary);
    font-size: 12px;
    margin: 0;
    line-height: 1.4;
}

/* Modal styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 440px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal.large-modal {
    max-width: 90%;
    max-height: 90%;
    width: 800px;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 24px 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

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

.modal-body {
    padding: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.large-modal .modal-body {
    max-height: 70vh;
}

.modal-body::-webkit-scrollbar {
    width: 6px;
}

.modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

.modal-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.modal-input {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    transition: var(--transition);
    font-weight: 400;
}

.modal-input:focus {
    background: var(--bg-hover);
    box-shadow: 0 0 0 2px var(--accent-primary-alpha);
}

.modal-clear-input {
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.modal-clear-input:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-footer {
    padding: 0 24px 24px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.modal-btn {
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 500;
}

.modal-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.modal-btn.primary {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
}

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

.modal-btn.danger {
    background: var(--error-bg);
    color: var(--error-text);
}

.modal-btn.danger:hover {
    background: var(--error-text);
    color: white;
}

/* Message Modal Content */
.message-modal-content {
    line-height: 1.6;
    font-size: 16px;
}

.message-modal-content .message-content {
    max-height: 50vh;
    overflow-y: auto;
    padding-right: 10px;
}

.message-modal-content .message-content::-webkit-scrollbar {
    width: 6px;
}

.message-modal-content .message-content::-webkit-scrollbar-track {
    background: transparent;
}

.message-modal-content .message-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

/* Model list styles */
.model-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
}

.model-item {
    padding: 16px 20px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
}

.model-item:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
}

.model-item.selected {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
}

.model-item.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.model-item.disabled:hover {
    background: var(--bg-tertiary);
    transform: none;
}

.model-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.model-name {
    font-weight: 500;
    font-size: 16px;
}

.model-status {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    font-weight: 500;
}

.model-status.available {
    background: var(--success-bg);
    color: var(--success-text);
}

.model-status.coming-soon {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.model-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Help modal specific styles */
.help-content {
    line-height: 1.6;
}

.help-content h1 {
    color: var(--accent-primary);
    margin-bottom: 20px;
    font-size: 1.5em;
    font-weight: 500;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.help-content h2 {
    color: var(--text-primary);
    margin: 24px 0 16px 0;
    font-size: 1.2em;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.help-content ul {
    margin: 16px 0;
    padding-left: 20px;
}

.help-content li {
    margin-bottom: 8px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.help-content strong {
    color: var(--text-primary);
    font-weight: 500;
}

.help-content code {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9em;
}

.help-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.help-feature {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.help-feature:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.help-feature i {
    font-size: 24px;
    color: var(--accent-primary);
    margin-bottom: 8px;
    display: block;
}

.help-feature span {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.help-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
    flex-wrap: wrap;
}

.help-action-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.help-action-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.help-action-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.help-action-btn.secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Search highlight */
.search-highlight {
    background-color: rgba(100, 181, 246, 0.3);
    border-radius: 2px;
    padding: 0 2px;
    color: inherit !important;
}

/* Notification styles */
.notification {
    position: fixed;
    top: 80px;
    right: 24px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    max-width: 320px;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.notification.success {
    border-left: 4px solid var(--success-text);
}

.notification.error {
    border-left: 4px solid var(--error-text);
}

.notification.warning {
    border-left: 4px solid var(--warning-text);
}

.notification.info {
    border-left: 4px solid var(--accent-primary);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.notification-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Beta Badge */
.beta-badge {
    background: linear-gradient(135deg, var(--user-message-bg-start), var(--user-message-bg-end));
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
    vertical-align: middle;
}

/* Tutorial overlay */
.tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10010;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutorial-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    text-align: center;
    z-index: 10011;
    position: relative;
}

.tutorial-step {
    display: none;
}

.tutorial-step.active {
    display: block;
}

.tutorial-step h3 {
    color: var(--accent-primary);
    margin-bottom: 16px;
    font-size: 1.3em;
}

.tutorial-step p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.tutorial-highlight {
    position: absolute;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-md);
    background: rgba(100, 181, 246, 0.1);
    pointer-events: none;
    z-index: 10009;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.7);
    animation: tutorialPulse 2s ease-in-out infinite;
}

.tutorial-element-highlight {
    position: fixed;
    background: var(--accent-primary);
    color: white;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    z-index: 10013;
    white-space: nowrap;
    pointer-events: none;
    box-shadow: var(--shadow-lg);
    animation: elementHighlight 2s ease-in-out infinite;
}

.tutorial-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
}

.tutorial-btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    font-weight: 500;
}

.tutorial-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.tutorial-btn.secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.tutorial-btn.primary:hover {
    background: var(--accent-secondary);
}

@keyframes tutorialPulse {
    0%, 100% { border-color: var(--accent-primary); }
    50% { border-color: var(--accent-secondary); }
}

@keyframes elementHighlight {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Responsive styles */
@media (max-width: 768px) {
    .app-header {
        padding: 8px 16px;
        padding-top: calc(8px + env(safe-area-inset-top, 0px));
        height: 56px;
    }
    
    .header-content {
        gap: 12px;
    }
    
    .logo-container .logo {
        width: 36px;
        height: 36px;
    }
    
    .logo i {
        font-size: 18px;
    }
    
    .model-select-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
        margin-right: 4px;
    }
    
    .header-search-container {
        flex: 1;
        margin: 0 8px;
    }
    
    .search-wrapper input {
        padding: 6px 32px 6px 28px;
        font-size: 13px;
    }
    
    .control-btn {
        width: 36px;
        height: 36px;
        padding: 6px;
        font-size: 14px;
    }
    
    .message {
        max-width: 90%;
        padding: 14px 16px;
    }
    
    .chat-minimap-container {
        position: fixed;
        right: 12px;
        top: 80px;
        bottom: 140px;
        width: 24px;
        gap: 8px;
        height: auto;
        z-index: 50;
    }
    
    .chat-minimap {
        height: 100%;
        width: 24px;
    }
    
    .minimap-navigation {
        position: relative;
        z-index: 60;
    }
    
    .nav-btn {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }
    
    .input-section {
        padding: 12px 16px 16px;
        padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    }
    
    .input-wrapper {
        gap: 8px;
    }
    
    #userInput {
        padding: 14px 100px 14px 14px;
        font-size: 15px;
        min-height: 52px;
    }
    
    .input-controls {
        right: 12px;
        bottom: 10px;
    }
    
    .input-btn, .send-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .action-buttons {
        gap: 8px;
    }
    
    .action-btn {
        padding: 8px 12px;
        font-size: 12px;
        height: 36px;
    }
    
    .app-footer {
        padding: 8px 16px;
        height: 48px;
    }
    
    .current-chat-info {
        font-size: 13px;
    }
    
    .connection-status {
        font-size: 12px;
    }
    
    .footer-controls {
        gap: 8px;
    }
    
    .footer-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .sidebar-menu {
        max-width: 320px;
    }
    
    .notification {
        top: 70px;
        right: 16px;
        left: 16px;
        max-width: none;
    }
    
    .preloader-logo {
        width: 60px;
        height: 60px;
    }
    
    .preloader-logo i {
        font-size: 36px;
    }
    
    .preloader-spinner {
        width: 32px;
        height: 32px;
    }
    
    .preloader-spinner i {
        font-size: 20px;
    }
    
    .welcome-content {
        padding: 20px;
        margin: 0 auto 16px;
    }
    
    .welcome-features {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .welcome-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .welcome-action-btn {
        width: 100%;
        justify-content: center;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
    
    .modal.large-modal {
        max-width: 95%;
        width: 95%;
    }
    
    .tutorial-content {
        padding: 20px;
        margin: 20px;
    }
    
    .tutorial-element-highlight {
        font-size: 12px;
        padding: 6px 10px;
        max-width: 200px;
        white-space: normal;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .app-header {
        padding: 6px 12px;
        padding-top: calc(6px + env(safe-area-inset-top, 0px));
    }
    
    .header-search-container {
        margin: 0 6px;
    }
    
    .model-select-btn {
        margin-right: 2px;
    }
    
    .message {
        max-width: 95%;
        padding: 12px 14px;
    }
    
    .chat-minimap-container {
        right: 8px;
        top: 70px;
        bottom: 130px;
        width: 20px;
        gap: 6px;
    }
    
    .chat-minimap {
        width: 20px;
    }
    
    .minimap-message {
        height: 6px;
        margin: 1px auto;
    }
    
    .minimap-navigation {
        gap: 4px;
    }
    
    .nav-btn {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }
    
    .input-section {
        padding: 8px 12px 12px;
        padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    }
    
    .action-buttons {
        justify-content: space-between;
    }
    
    .action-btn {
        flex: 1;
        justify-content: center;
        min-width: 0;
    }
    
    .mode-btn:not(.active) {
        width: 44px;
    }
    
    .mode-btn:not(.active) .btn-text {
        display: none;
    }
    
    .sidebar-menu {
        max-width: 100%;
    }
    
    .chat-management-buttons {
        flex-direction: column;
    }
    
    .footer-controls {
        gap: 6px;
    }
    
    .footer-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .welcome-content h1 {
        font-size: 20px;
    }
    
    .welcome-feature {
        padding: 12px;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Hide scrollbar for minimap */
.chat-minimap::-webkit-scrollbar {
    display: none;
}

.chat-minimap {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Print styles */
@media print {
    .app-header,
    .input-section,
    .app-footer,
    .sidebar-menu,
    .sidebar-overlay,
    .modal-overlay,
    .chat-minimap-container {
        display: none !important;
    }
    
    .app-container {
        height: auto;
        overflow: visible;
    }
    
    .chat-main {
        overflow: visible;
    }
    
    .messages-container {
        overflow: visible;
    }
    
    body {
        background: white;
        color: black;
        overflow: visible;
    }
}

/* Input disabled state */
.input-disabled {
    opacity: 0.7;
    pointer-events: none;
}

.input-disabled #userInput {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
}

/* Streaming message styles */
.streaming-message {
    border-left: 3px solid var(--accent-primary);
}

.streaming-content {
    position: relative;
}

.streaming-text {
    min-height: 20px;
}

/* Audio player styles */
.audio-player {
    margin: 12px 0;
}

.audio-player audio {
    width: 100%;
    max-width: 300px;
    border-radius: var(--radius-md);
}

/* File attachment styles */
.attached-file {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 12px;
}

.attached-file i {
    font-size: 16px;
}

.remove-file {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

.remove-file:hover {
    background: var(--error-bg);
    color: var(--error-text);
}

/* Performance optimizations */
.message {
    content-visibility: auto;
    contain-intrinsic-size: 100px;
}

/* Dynamic input font size */
#userInput.dynamic-font {
    font-size: 18px;
    line-height: 1.4;
}

#userInput.dynamic-font.small {
    font-size: 16px;
    line-height: 1.5;
}

/* Search filter styles */
.message.search-hidden {
    display: none !important;
}

.message.search-visible {
    display: flex !important;
}

/* Parallax effects for mobile */
@media (max-width: 768px) {
    .app-container {
        transition: transform 0.1s ease-out;
    }
}

/* Mobile-specific minimap positioning */
@media (max-width: 768px) and (orientation: portrait) {
    .chat-minimap-container {
        top: 80px;
        bottom: 140px;
    }
}

@media (max-width: 768px) and (orientation: landscape) {
    .chat-minimap-container {
        top: 60px;
        bottom: 120px;
    }
}

/* Message Modal Footer Responsive Fixes */
.modal-footer {
    flex-wrap: wrap;
    gap: 8px;
}

.modal-footer .modal-btn {
    flex: 1;
    min-width: 120px;
    justify-content: center;
}

@media (max-width: 480px) {
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .modal-btn {
        width: 100%;
    }
}

/* Enhanced Tutorial Experience */
.tutorial-step {
    position: relative;
    z-index: 10012;
}

/* Improved Minimap Accuracy */
.minimap-message {
    height: auto;
    min-height: 4px;
    max-height: 20px;
}

/* Enhanced Mobile Experience */
@media (max-width: 768px) {
    .messages-container {
        -webkit-overflow-scrolling: touch;
    }
    
    .chat-minimap-container {
        touch-action: pan-y;
    }
}

/* Loading State Improvements */
.message.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Error State Visual Improvements */
.message-error {
    animation: errorPulse 2s ease-in-out;
}

@keyframes errorPulse {
    0%, 100% { background-color: var(--error-bg); }
    50% { background-color: rgba(244, 67, 54, 0.2); }
}

/* Fix for tutorial text visibility */
.tutorial-step p {
    color: var(--text-primary) !important;
    z-index: 10013;
    position: relative;
}

.tutorial-content {
    z-index: 10012 !important;
}

/* PWA Install Button Improvements */
.pwa-install-section {
    animation: slideInDown 0.5s ease-out;
}

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

/* GitHub Link Fix */
.github-link {
    text-decoration: none !important;
}

.github-link:focus,
.github-link:active {
    text-decoration: none !important;
}