/* Root Variables - Consolidate all variables */
:root {
    --primary-color: #5cb85c;
    --secondary-color: #4cae4c;
    --text-color: #333;
    --light-gray: #f4f4f4;
    --border-color: #ddd;
    --header-height: 70px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 2px 5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --radius-sm: 4px;
    --radius-md: 8px;
    --dark-bg: #1a1a1a;
    --dark-text: #f0f0f0;
    --container-width: 1200px;
}

/* Global Styles */
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-gray);
    margin: 0;
    padding-top: var(--header-height);
    overflow-x: hidden;
    width: 100%;
}

/* Common Container Styles - Gộp các container styles */
.container,
.header-container,
.hero-section,
.tts-container,
.controls-container,
.model-controls,
.text-input-container,
.language-toolbar,
.vocals-toolbar {
    max-width: var(--container-width);
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
    padding: 20px;
}

/* Header Styles */
.main-header {
    background: #fff;
    box-shadow: var(--shadow-md);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo Styles */
.logo a {
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
}

.logo span {
    color: var(--primary-color);
    font-weight: 800;
}

/* Navigation Styles */
.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links {
    display: flex;
    gap: 20px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a i {
    font-size: 1.1em;
    color: var(--primary-color);
}

.nav-links a:hover {
    background: var(--light-gray);
}

.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a.premium-btn {
    background: var(--primary-color);
    color: white !important;
}

.nav-links a.premium-btn i {
    color: white;
}

.nav-links a.premium-btn:hover {
    background: var(--secondary-color) !important;
    transform: translateY(-1px);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    /* Ẩn mặc định trên desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-color);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

@media (max-width: 768px) {
    .main-nav {
        position: relative;
    }

    .mobile-menu-btn {
        display: block;
        margin-left: auto;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: calc(var(--header-height) - 20px);
        right: 0;
        width: 200px;
        background: #fff;
        flex-direction: column;
        padding: 10px 0;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        border-radius: 4px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links li a {
        width: 100%;
        padding: 10px 16px;
        justify-content: flex-start;
    }

    .nav-links li a.premium-btn {
        display: inline-flex;
        width: auto;
        padding: 8px 16px;
        margin-left: 16px;
    }

    .nav-links li a i {
        margin-right: 8px;
    }

    .mobile-menu-btn.active .hamburger {
        background: transparent;
    }

    .mobile-menu-btn.active .hamburger::before {
        transform: rotate(45deg);
        top: 0;
    }

    .mobile-menu-btn.active .hamburger::after {
        transform: rotate(-45deg);
        bottom: 0;
    }
}

/* Main Content Styles */
.container {
    max-width: 1000px;
    /* Reduced from 1200px */
    margin: 0 auto;
    padding: 40px 15px;
    /* Adjusted horizontal padding */
    max-width: 1200px;
    /* Match header-container width */
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

/* Hero Section - Updated */
.hero-section {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 8px;
    margin: 20px auto;
    width: 100%;
    max-width: 1000px;
    box-sizing: border-box;
}

.hero-section h2 {
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    color: var(--text-color);
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-section p {
    font-size: clamp(1rem, 2vw, 1.1rem);
    color: #666;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 30px 15px;
        margin: 15px auto 25px;
    }
}

@media (prefers-color-scheme: dark) {
    .hero-section {
        background: linear-gradient(135deg, #242424 0%, #1a1a1a 100%);
    }

    .hero-section p {
        color: #999;
    }
}

/* Form Controls */
.controls-container {
    background: #fff;
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin: 20px;
    box-sizing: border-box;
    width: calc(100% - 40px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
    max-width: 1000px;
    width: calc(100% - 30px);
    margin: 15px auto;
}

/* Toggle Styles */
.multilingual-toggle,
.vocals-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.multilingual-toggle input[type="checkbox"],
.vocals-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.multilingual-toggle label,
.vocals-toggle label {
    cursor: pointer;
    user-select: none;
}

/* Toolbar Styles */
.multilingual-toolbar,
.vocals-toolbar {
    background-color: #f5f5f5;
    border-radius: 8px;
    padding: 15px;
    margin: 10px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.multilingual-toolbar .toolbar-content,
.vocals-toolbar .toolbar-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.multilingual-toolbar .toolbar-hint,
.vocals-toolbar .toolbar-hint {
    font-size: 14px;
    color: #666;
}

.multilingual-toolbar .toolbar-example,
.vocals-toolbar .toolbar-example {
    font-size: 13px;
    color: #888;
    font-style: italic;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {

    .multilingual-toolbar,
    .vocals-toolbar {
        background-color: #2a2a2a;
    }

    .multilingual-toolbar .toolbar-hint,
    .vocals-toolbar .toolbar-hint {
        color: #ccc;
    }

    .multilingual-toolbar .toolbar-example,
    .vocals-toolbar .toolbar-example {
        color: #aaa;
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .controls-container {
        gap: 12px;
    }

    .multilingual-toggle,
    .vocals-toggle {
        padding: 6px 0;
    }

    .multilingual-toolbar,
    .vocals-toolbar {
        padding: 12px;
        margin: 8px 0;
    }
}

/* Common Button Styles - Gộp các button styles */
.btn,
.primary-btn,
.lang-btn,
.cookie-btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: white;
        padding: 20px;
        box-shadow: var(--shadow-md);
        flex-direction: column;
        align-items: stretch;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 12px 16px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-section h2 {
        font-size: 2rem;
    }

    .controls-container,
    .text-input-container,
    .language-toolbar {
        width: calc(100% - 30px);
        margin: 15px;
    }

    .container,
    .tts-container,
    .controls-container,
    .text-input-container,
    .language-toolbar {
        width: calc(100% - 20px);
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 20px;
    }

    .controls-container {
        padding: 16px;
        width: calc(100% - 20px);
        margin: 10px;
    }

    .hero-section h2 {
        font-size: 1.75rem;
    }

    .controls-container,
    .text-input-container,
    .language-toolbar {
        width: calc(100% - 20px);
        margin: 10px;
    }
}

/* TTS Container - Updated */
.tts-container {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 20px;
    margin: 20px auto;
    max-width: 1000px;
    /* Reduced from 1200px */
    box-sizing: border-box;
    width: 100%;
    max-width: 1200px;
    /* Match container width */
    width: 100%;
    overflow: hidden;
}

@media (max-width: 768px) {
    .tts-container {
        padding: 15px;
        margin: 15px auto;
    }

    .controls-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .voice-controls,
    .model-selection,
    .speed-control {
        width: 100%;
    }

    .model-selection {
        justify-content: flex-start;
    }

    .model-selection label {
        padding: 6px 12px;
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    .tts-container {
        padding: 10px;
        margin: 10px auto;
    }

    .controls-container {
        gap: 12px;
    }

    .voice-select {
        padding: 8px;
        font-size: 0.9em;
    }
}

/* Model Controls */
.model-controls {
    padding: 24px;
    margin: 20px auto;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.model-selection {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
}

.model-selection input[type="radio"] {
    display: none;
}

.model-selection label {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0;
}

.model-selection input[type="radio"]:checked+label {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Voice Controls */
.voice-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 10px 0;
    min-height: 10px;
    margin-top: -40px;
}

#countrySelect,
#voiceSelect {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1em;
    background: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
}

#countrySelect:hover,
#voiceSelect:hover {
    border-color: var(--primary-color);
}

#voiceSelectionDiv {
    opacity: 0;
    height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

#voiceSelectionDiv[style*="display: block"] {
    opacity: 1;
    height: auto;
    margin-top: 15px;
}

.voice-controls label {
    font-weight: 500;
    color: var(--text-color);
    margin-top: 10px;
    display: block;
}

/* Dark mode support for selects */
@media (prefers-color-scheme: dark) {

    #countrySelect,
    #voiceSelect {
        background: var(--dark-bg);
        color: var(--dark-text);
        border-color: var(--border-color);
    }

    #countrySelect:hover,
    #voiceSelect:hover {
        border-color: var(--primary-color);
    }

    .voice-controls label {
        color: var(--dark-text);
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {

    #countrySelect,
    #voiceSelect {
        padding: 12px;
        font-size: 16px;
        /* Prevent zoom on mobile */
    }

    .voice-controls {
        gap: 12px;
    }
}

#countrySelect {
    margin-bottom: 10px;
}

/* Responsive styles for voice controls */
@media (max-width: 768px) {
    .voice-controls label {
        margin-bottom: 5px;
    }

    #countrySelect,
    #voiceSelect {
        width: 100%;
    }
}

/* Speed Control */
.speed-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.speed-control input[type="range"] {
    flex: 1;
}

#speedDisplay {
    min-width: 40px;
    text-align: center;
}

/* Multilingual Toggle */
.multilingual-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
}

.multilingual-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

/* Text Input Area */
.text-input-container {
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin: 20px;
    padding: 24px;
    box-sizing: border-box;
    width: calc(100% - 40px);
    position: relative;
    max-width: 1000px;
    /* Added max-width */
    width: calc(100% - 30px);
    /* Adjusted from 40px */
    margin: 20px auto;
    /* Changed to auto for horizontal centering */
}

.input-wrapper {
    position: relative;
    margin: 0;
    box-sizing: border-box;
    width: 100%;
}

#textInput {
    display: block;
    width: 100%;
    min-height: 150px;
    padding: 16px;
    margin: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1em;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
    background: #fff;
}

#textInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(92, 184, 92, 0.1);
}

.placeholder {
    position: absolute;
    top: 28px;
    left: 28px;
    color: #999;
    pointer-events: none;
    transition: all 0.3s ease;
}

#wordCount {
    margin-top: 12px;
    color: #666;
    font-size: 0.9em;
    text-align: right;
}

@media (max-width: 768px) {
    .text-input-container {
        margin: 15px;
        padding: 16px;
        width: calc(100% - 30px);
    }

    #textInput {
        min-height: 120px;
        padding: 12px;
        font-size: 0.95em;
    }

    .placeholder {
        top: 24px;
        left: 24px;
    }
}

@media (max-width: 480px) {
    .text-input-container {
        margin: 10px;
        padding: 12px;
        width: calc(100% - 20px);
    }

    #textInput {
        min-height: 100px;
        padding: 10px;
        font-size: 0.9em;
    }

    .placeholder {
        top: 20px;
        left: 20px;
        font-size: 0.9em;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .text-input-container {
        background: #242424;
    }

    #textInput {
        background: #333;
        color: var(--dark-text);
        border-color: #404040;
    }

    #textInput:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px rgba(92, 184, 92, 0.15);
    }

    #wordCount {
        color: #999;
    }
}

/* Common Toolbar Styles - Gộp các toolbar styles */
.language-toolbar,
.vocals-toolbar {
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    order: 3;
    padding: 15px;
    margin: 10px auto;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    box-sizing: border-box;
    width: 100%;
    max-width: 1200px;
}

.toolbar-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin: 0 auto;
    padding: 15px;
    width: 100%;
}

/* Tablet & Mobile Optimizations */
@media (max-width: 1024px) {

    .language-toolbar,
    .vocals-toolbar {
        position: sticky;
        top: calc(var(--header-height) + 10px);
        z-index: 100;
        margin: 10px;
        padding: 10px;
        background: rgba(248, 249, 250, 0.95);
        backdrop-filter: blur(8px);
    }
}

/* Mobile Specific */
@media (max-width: 768px) {

    .language-toolbar,
    .vocals-toolbar {
        width: calc(100% - 20px);
        margin: 8px auto;
        padding: 12px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {

    .language-toolbar,
    .vocals-toolbar {
        background: rgba(36, 36, 36, 0.95);
        border-color: #404040;
    }
}

/* Vocals specific styles */
.vocals-toolbar .toolbar-content {
    border-left: 4px solid #17a2b8;
    padding-left: 15px;
}

#vocalsToolbar ul li {
    color: #666;
    font-style: italic;
}

.toolbar-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #666;
}

.toolbar-example {
    display: none;
}

.toolbar-actions {
    display: flex;
    justify-content: center;
    max-width: 300px;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95em;
    transition: all 0.2s ease;
}

.lang-btn:before {
    content: none;
}

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

@media (max-width: 768px) {
    .toolbar-actions {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: #f8f9fa;
        padding: 8px;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        display: flex;
        gap: 8px;
        margin: 0 0 10px 0;
    }

    .toolbar-actions .lang-btn {
        padding: 6px 12px;
        font-size: 0.9em;
    }

    .text-input-container {
        position: relative;
        margin-top: 5px;
    }

    .language-toolbar {
        width: calc(100% - 40px);
        margin: 10px 20px;
        background: #f8f9fa;
        border-radius: 12px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .toolbar-content {
        flex-direction: column;
        gap: 12px;
        padding: 15px;
        width: 100%;
        margin: 0;
        align-items: center;
    }

    .toolbar-hint {
        display: none;
    }

    .toolbar-example {
        display: block;
        text-align: center;
        color: #666;
        font-size: 1em;
        margin: 0 0 12px 0;
        order: 1;
        width: 100%;
    }

    .toolbar-actions {
        width: 100%;
        order: 2;
        display: flex;
        justify-content: center;
    }

    .lang-btn {
        width: 100%;
        max-width: 400px;
        padding: 12px 20px;
        font-size: 1em;
        justify-content: center;
    }

    .lang-btn .shortcut {
        display: none;
    }
}

@media (max-width: 480px) {
    .language-toolbar {
        width: calc(100% - 20px);
        margin: 8px auto;
        padding: 12px;
    }

    .toolbar-content {
        flex-direction: column;
        gap: 12px;
        padding: 0;
        width: 100%;
    }

    .toolbar-example {
        text-align: center;
        font-size: 0.9em;
        margin-bottom: 8px;
        order: 1;
        width: 100%;
    }

    .toolbar-actions {
        width: 100%;
        order: 2;
        justify-content: center;
    }

    .lang-btn {
        width: 100%;
        max-width: 400px;
        padding: 12px 20px;
        font-size: 1em;
        justify-content: center;
    }

    /* Voice Controls spacing */
    .voice-controls {
        gap: 12px;
        margin-bottom: 12px;
    }

    .speed-control {
        margin-bottom: 12px;
    }

    /* Consistent spacing */
    .controls-container {
        gap: 12px;
        padding: 15px;
    }
}

/* Even smaller screens */
@media (max-width: 480px) {

    .language-toolbar,
    .vocals-toolbar {
        width: calc(100% - 16px);
        margin: 8px auto;
        padding: 10px;
    }

    .toolbar-content {
        gap: 8px;
    }

    .toolbar-example {
        font-size: 0.85em;
    }

    .controls-container {
        padding: 12px;
        gap: 10px;
    }

    .voice-controls,
    .speed-control {
        gap: 8px;
    }

    .lang-btn {
        padding: 8px;
        font-size: 0.9em;
    }
}

/* Mobile & Tablet Sticky Toolbar Actions */
@media (max-width: 1024px) {
    .toolbar-actions {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: #f8f9fa;
        padding: 8px;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        display: flex;
        gap: 8px;
        margin: 0 0 10px 0;
    }

    .toolbar-actions .lang-btn {
        padding: 6px 12px;
        font-size: 0.9em;
    }

    .text-input-container {
        position: relative;
        margin-top: 5px;
    }
}

/* Adjust for smaller screens */
@media (max-width: 480px) {
    .toolbar-actions {
        padding: 6px;
    }

    .toolbar-actions .lang-btn {
        padding: 5px 10px;
        font-size: 0.85em;
    }
}

/* Mobile Styles */
@media (max-width: 480px) {
    .text-input-container {
        margin: 10px;
    }

    .lang-btn {
        padding: 6px 12px;
        font-size: 0.9em;
    }

    .toolbar-actions {
        padding: 6px;
        gap: 6px;
    }
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    .language-toolbar {
        background: rgba(45, 45, 45, 0.95);
    }

    .toolbar-actions {
        background: rgba(45, 45, 45, 0.95);
    }
}

/* Action Buttons */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.primary-btn {
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

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

#downloadLink {
    padding: 12px 24px;
    background: #fff;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

#downloadLink:hover {
    background: var(--light-gray);
}

@media (max-width: 768px) {
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }

    .action-buttons .primary-btn,
    .action-buttons #downloadLink {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .toolbar-content {
        flex-direction: column;
        align-items: center;
    }

    .toolbar-hint {
        text-align: center;
        justify-content: center;
    }

    .lang-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* Progress Bar */
#progressContainer {
    margin-top: 20px;
}

.progress {
    height: 6px;
    background: var(--light-gray);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

#progressBar {
    height: 100%;
    background: var(--primary-color);
    width: 0;
    transition: width 0.3s ease;
}

#progressPercentage {
    text-align: center;
    color: #666;
    font-size: 0.9em;
}

#loadingText {
    text-align: center;
    color: #666;
    margin-top: 5px;
}

/* Audio Player */
#audioPlayer {
    margin-top: 20px;
    width: 100%;
    border-radius: 6px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .controls-container {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    #downloadLink {
        text-align: center;
        justify-content: center;
    }
}

/* Speak button states */
#speakButton:disabled,
#speakButton.processing {
    background-color: #cccccc !important;
    cursor: not-allowed !important;
    opacity: 0.7;
    pointer-events: none;
}

.lang-transition * {
    transition: opacity 0.3s ease-in-out;
}

.fade-out {
    opacity: 0;
}

.primary-btn {
    transition: all 0.3s ease-in-out;
}

/* Footer Styles */
.main-footer {
    background: #fff;
    padding: 60px 0 20px;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-section h3 {
    color: var(--text-color);
    margin-bottom: 20px;
    font-size: 1.2em;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.contact-info li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.donate-info p {
    margin-bottom: 10px;
    font-size: 0.9em;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        display: none !important;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex !important;
        flex-direction: column;
    }

    .hero-section {
        padding: 40px 20px;
    }

    .hero-section h2 {
        font-size: 2em;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-section {
    animation: fadeIn 0.6s ease;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Enhanced Loading Wave Animation */
.loading-wave {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 20px 0;
    height: 30px;
    /* Thêm chiều cao cố định */
}

.loading-wave span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    transform-origin: center center;
    animation: wave 1s ease-in-out infinite;
    will-change: transform;
    /* Tối ưu performance */
    -webkit-animation: wave 1s ease-in-out infinite;
    /* Safari support */
}

/* Điều chỉnh delay cho từng dot */
.loading-wave span:nth-child(1) {
    animation-delay: -0.4s;
    -webkit-animation-delay: -0.4s;
}

.loading-wave span:nth-child(2) {
    animation-delay: -0.3s;
    -webkit-animation-delay: -0.3s;
}

.loading-wave span:nth-child(3) {
    animation-delay: -0.2s;
    -webkit-animation-delay: -0.2s;
}

.loading-wave span:nth-child(4) {
    animation-delay: -0.1s;
    -webkit-animation-delay: -0.1s;
}

.loading-wave span:nth-child(5) {
    animation-delay: 0s;
    -webkit-animation-delay: 0s;
}

@keyframes wave {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

@-webkit-keyframes wave {

    0%,
    100% {
        -webkit-transform: translateY(0);
    }

    50% {
        -webkit-transform: translateY(-15px);
    }
}

/* Thêm smooth effect cho dots */
.loading-wave span {
    transition: background-color 0.3s ease;
}

/* Dark mode adjustment */
@media (prefers-color-scheme: dark) {
    .loading-wave span {
        background: var(--primary-color);
        opacity: 0.9;
    }
}

/* Tối ưu cho các thiết bị có màn hình nhỏ */
@media (max-width: 768px) {
    .loading-wave {
        gap: 6px;
        height: 24px;
    }

    .loading-wave span {
        width: 6px;
        height: 6px;
    }
}

/* Add new Loading Animation */
.loading-wave {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 20px 0;
}

.loading-wave span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: wave 1.5s ease-in-out infinite;
}

.loading-wave span:nth-child(1) {
    animation-delay: 0s;
}

.loading-wave span:nth-child(2) {
    animation-delay: 0.1s;
}

.loading-wave span:nth-child(3) {
    animation-delay: 0.2s;
}

.loading-wave span:nth-child(4) {
    animation-delay: 0.3s;
}

.loading-wave span:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes wave {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* Enhanced Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: var(--dark-text);
        --light-gray: #2d2d2d;
        --border-color: #404040;
    }

    body {
        background: var(--dark-bg);
        color: var(--dark-text);
    }

    .main-header,
    .tts-container,
    .language-toolbar,
    .main-footer {
        background: #242424;
    }

    .nav-links a:hover {
        background: var(--light-gray);
    }

    #textInput {
        background: #333;
        color: var(--dark-text);
    }

    .hero-section {
        background: linear-gradient(135deg, #242424 0%, #1a1a1a 100%);
    }

    /* Menu dark mode */
    .main-header {
        background: #1a1a1a;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links a {
        color: var (--dark-text);
    }

    .nav-links a:hover {
        background: #333;
    }

    .nav-links a i {
        color: var(--primary-color);
    }

    .hamburger,
    .hamburger::before,
    .hamburger::after {
        background: var(--dark-text);
    }

    /* Mobile menu in dark mode */
    @media (max-width: 768px) {
        .nav-links {
            background: #1a1a1a;
            border: 1px solid var(--border-color);
        }
    }

    /* TTS Container dark mode */
    .tts-container {
        background: #1a1a1a;
        border: 1px solid var(--border-color);
    }

    .controls-container {
        background: #242424;
        border: 1px solid var(--border-color);
    }

    #countrySelect,
    #voiceSelect {
        background: #333;
        color: var(--dark-text);
        border-color: var(--border-color);
    }

    #countrySelect:hover,
    #voiceSelect:hover {
        border-color: var(--primary-color);
    }

    .model-controls {
        background-color: #1a1a1a !important;
        /* Force override with !important */
        border: 1px solid var(--border-color);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .model-selection label {
        background: #333;
        color: var(--dark-text);
        border-color: #404040;
    }

    .model-selection label:hover {
        background: #3a3a3a;
        border-color: var (--primary-color);
    }

    .model-selection input[type="radio"]:checked+label {
        background: var(--primary-color);
        color: white;
        border-color: transparent;
    }

    .form-group label {
        color: var(--dark-text);
    }

    /* Tooltips và hints trong model controls */
    .model-controls .hint,
    .model-controls .tooltip {
        color: #999;
    }

    /* Speed control dark mode */
    .speed-control input[type="range"] {
        background: #333;
    }

    #speedDisplay {
        color: var(--dark-text);
    }

    /* Loading wave dark mode */
    .loading-wave span {
        background: var(--primary-color);
        opacity: 0.9;
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .controls-container {
        gap: 15px;
    }

    .voice-select {
        font-size: 0.95em;
        padding: 10px;
    }

    .speed-control {
        flex-direction: column;
        align-items: stretch;
    }

    #textInput {
        font-size: 1.1em;
        padding: 15px;
    }

    .action-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .primary-btn,
    #downloadLink {
        width: 100%;
        justify-content: center;
        padding: 15px;
        font-size: 1.1em;
    }

    #progressContainer {
        margin-top: 15px;
    }

    #loadingText {
        font-size: 0.9em;
        line-height: 1.5;
    }

    .multilingual-toggle input[type="checkbox"] {
        width: 18px;
        height: 18px;
    }

    .model-selection label {
        padding: 10px 20px;
    }
}

/* Accessibility Improvements */
:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }

    .loading-wave span {
        animation: none !important;
    }
}

[aria-hidden="true"] {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.cookie-banner {
    position: fixed;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    width: 90%;
    max-width: 480px;
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    animation: slideUp 0.3s ease;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.cookie-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.cookie-content p {
    color: #666;
    line-height: 1.5;
    margin: 0;
    text-align: center;
}

.cookie-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.cookie-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate(-50%, 20px);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

@media (max-width: 480px) {
    .cookie-banner {
        bottom: 0;
        width: 100%;
        max-width: none;
        border-radius: 12px 12px 0 0;
    }
}

/* Tablet & Mobile Optimizations */
@media (max-width: 1024px) {

    .language-toolbar[style*="display: flex"],
    .language-toolbar[style*="display: block"],
    .vocals-toolbar[style*="display: block"] {
        position: sticky;
        top: calc(var(--header-height) + 10px);
        z-index: 100;
        margin: 10px;
        padding: 10px;
        background: rgba(248, 249, 250, 0.95);
        backdrop-filter: blur(8px);
        order: 3;
    }
}

/* Mobile Specific Optimizations */
@media (max-width: 480px) {

    .language-toolbar,
    .vocals-toolbar {
        margin: 8px;
        padding: 8px;
    }

    .toolbar-content {
        flex-direction: column;
        gap: 8px;
    }

    .toolbar-example {
        font-size: 0.85em;
        text-align: center;
        margin: 0;
    }

    .toolbar-actions {
        width: 100%;
    }

    .lang-btn {
        width: 100%;
        justify-content: center;
    }

    .lang-btn .shortcut {
        display: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {

    .language-toolbar,
    .vocals-toolbar {
        background: rgba(36, 36, 36, 0.95);
        border-color: #404040;
    }

    .toolbar-example {
        color: #999;
    }

    @media (max-width: 768px) {

        .language-toolbar[style*="display: flex"],
        .language-toolbar[style*="display: block"],
        .vocals-toolbar[style*="display: block"] {
            background: rgba(36, 36, 36, 0.95);
        }
    }
}

/* Responsive adjustments */
@media (max-width: 1024px) {

    .hero-section,
    .tts-container {
        width: calc(100% - 30px);
        margin: 15px auto;
    }
}

@media (max-width: 768px) {

    .hero-section,
    .tts-container {
        width: calc(100% - 20px);
        margin: 10px auto;
        padding: 15px;
    }
}

@media (max-width: 480px) {

    .hero-section,
    .tts-container {
        width: calc(100% - 16px);
        margin: 8px auto;
        padding: 12px;
    }
}

/* Fix horizontal scroll on mobile/tablet */
@media screen and (max-width: 1024px) {
    body {
        overflow-x: hidden;
        width: 100%;
    }

    .container,
    .tts-container,
    .controls-container,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar {
        width: calc(100% - 30px);
        margin-left: auto;
        margin-right: auto;
        box-sizing: border-box;
        overflow: visible;
    }

    .header-container {
        width: calc(100% - 30px);
        padding: 0;
    }
}

@media screen and (max-width: 768px) {

    .container,
    .tts-container,
    .controls-container,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar,
    .header-container {
        width: calc(100% - 20px);
    }
}

@media screen and (max-width: 480px) {

    .container,
    .tts-container,
    .controls-container,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar,
    .header-container {
        width: calc(100% - 16px);
    }
}

/* Container alignments */
.header-container,
.hero-section,
.tts-container,
.controls-container,
.model-controls,
.text-input-container,
.language-toolbar,
.vocals-toolbar {
    max-width: 1200px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

/* Model Controls alignment */
.model-controls {
    padding: 24px;
    margin: 20px auto;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.model-selection {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
}

/* Responsive adjustments */
@media screen and (max-width: 1024px) {

    .header-container,
    .hero-section,
    .tts-container,
    .controls-container,
    .model-controls,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar {
        width: calc(100% - 30px);
        padding-left: 15px;
        padding-right: 15px;
    }
}

@media screen and (max-width: 768px) {

    .header-container,
    .hero-section,
    .tts-container,
    .controls-container,
    .model-controls,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar {
        width: calc(100% - 20px);
        padding-left: 10px;
        padding-right: 10px;
    }
}

@media screen and (max-width: 480px) {

    .header-container,
    .hero-section,
    .tts-container,
    .controls-container,
    .model-controls,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar {
        width: calc(100% - 16px);
        padding-left: 8px;
        padding-right: 8px;
    }
}

#voiceSelectionDiv {
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

#voiceSelectionDiv[style*="display: block"] {
    opacity: 1;
    transform: translateY(0);
}

/* Language Transition */
.lang-transition {
    opacity: 0.8;
    transition: opacity 0.15s ease-in-out;
}

/* Language Selector Enhancement */
.language-select select {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: #fff;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.3s ease;
}

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

/* Language Select Styling */
.language-select {
    position: relative;
    display: inline-block;
}

.language-select select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding: 8px 32px 8px 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
    cursor: pointer;
    font-size: 14px;
}

.language-select::after {
    content: '\f0d7';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .language-select select {
        padding: 6px 28px 6px 12px;
        font-size: 13px;
    }
}

/* Enhanced Link Styles */
a {
    color: var(--primary-color);
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
    outline: none;
}

a:hover {
    color: var(--secondary-color);
}

/* Remove focus outline and add custom focus style */
a:focus {
    outline: none;
}

a:focus-visible {
    box-shadow: 0 0 0 2px rgba(92, 184, 92, 0.2);
    border-radius: 2px;
}

/* Add subtle underline effect on hover */
a:not(.logo a):not(.nav-links a):not(.premium-btn):after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}

a:not(.logo a):not(.nav-links a):not(.premium-btn):hover:after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* Footer link specific styles */
.footer-section a {
    color: #666;
    padding: 2px 0;
}

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

.contact-info a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.contact-info a:hover {
    background-color: rgba(92, 184, 92, 0.1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    a {
        color: #7cc17c;
    }

    .footer-section a {
        color: #999;
    }

    .footer-section a:hover {
        color: #7cc17c;
    }

    .contact-info a:hover {
        background-color: rgba(92, 184, 92, 0.15);
    }
}

/* Vocals Mode Styles */
.vocals-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
}

.vocals-toggle input[type="checkbox"] {
    margin-right: 8px;
}

.vocals-toolbar {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    padding: 15px;
    margin: 10px auto;
    position: relative;
    max-width: 1200px;
    display: none;
    order: 3;
}

.vocals-toolbar .toolbar-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vocals-toolbar .toolbar-hint {
    font-size: 14px;
    color: #666;
}

.vocals-toolbar .toolbar-example {
    font-size: 13px;
    color: #888;
    font-style: italic;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .vocals-toolbar {
        background-color: #2a2a2a;
    }

    .vocals-toolbar .toolbar-hint {
        color: #ccc;
    }

    .vocals-toolbar .toolbar-example {
        color: #aaa;
    }
}

/* Common Input Styles - Gộp các input styles */
.multilingual-toggle input[type="checkbox"],
.vocals-toggle input[type="checkbox"],
#vocalsToggle {
    width: 18px !important;
    height: 18px !important;
    margin: 0;
    cursor: pointer;
    vertical-align: middle;
}

@media (max-width: 768px) {

    .multilingual-toggle input[type="checkbox"],
    #vocalsToggle {
        width: 18px !important;
        height: 18px !important;
        margin: 0;
        cursor: pointer;
        vertical-align: middle;
    }
}

/* Đảm bảo thứ tự hiển thị các phần tử */
.tts-container {
    display: flex;
    flex-direction: column;
}

.controls-container {
    order: 1;
}

.model-controls {
    order: 2;
}

.language-toolbar {
    order: 3;
}

.vocals-toolbar {
    order: 3;
}

.text-input-container {
    order: 4;
}

.action-buttons {
    order: 5;
}

#progressContainer {
    order: 6;
}

#audioPlayer {
    order: 7;
}

/* Media Queries - Consolidated */
@media (max-width: 1024px) {

    .container,
    [class*="-container"],
    [class*="-toolbar"] {
        width: calc(100% - 30px);
        padding: 15px;
    }
}

@media (max-width: 768px) {
    /* ...existing mobile styles... */

    .container,
    .tts-container,
    .controls-container,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar,
    .header-container {
        width: calc(100% - 20px);
        padding: 10px;
    }
}

@media (max-width: 480px) {
    /* ...existing small screen styles... */

    .container,
    .tts-container,
    .controls-container,
    .text-input-container,
    .language-toolbar,
    .vocals-toolbar,
    .header-container {
        width: calc(100% - 16px);
        padding: 8px;
    }
}

/* Dark Mode - Consolidated */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: var(--dark-text);
        --light-gray: #2d2d2d;
        --border-color: #404040;
    }

    body {
        background: var(--dark-bg);
    }

    .main-header,
    .tts-container,
    .language-toolbar,
    .main-footer,
    .model-controls {
        background: #242424;
    }

    /* ...existing dark mode styles... */
}

/* Enhanced features styles for test.ttshub.com */

/* Secondary button styles */
.secondary-btn {
    padding: 10px 20px;
    background: #fff;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

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

/* Advanced Settings Panel */
.advanced-settings {
    background: #fff;
    border-radius: 8px;
    margin: 20px auto;
    max-width: 1000px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.advanced-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
}

.advanced-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.1em;
}

.advanced-header .toggle-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2em;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.advanced-header .toggle-btn.expanded {
    transform: rotate(180deg);
}

.advanced-content {
    padding: 20px;
    display: none;
}

.advanced-content.expanded {
    display: block;
}

.setting-group {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.setting-group label {
    min-width: 120px;
    font-weight: 500;
    color: var(--text-color);
}

.setting-group select,
.setting-group input[type="range"] {
    flex: 1;
    max-width: 200px;
}

.setting-group input[type="range"] {
    margin-right: 10px;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: #fff;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.modal-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.3em;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2em;
    color: #999;
    cursor: pointer;
    line-height: 1;
}

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

.modal-body {
    padding: 20px;
}

.batch-input label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-color);
}

.batch-input textarea {
    width: 100%;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    box-sizing: border-box;
}

.batch-settings {
    margin: 20px 0;
}

.setting-row {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 15px;
}

.setting-row label {
    min-width: 80px;
    font-weight: 500;
}

.batch-actions {
    text-align: center;
    margin: 20px 0;
}

.batch-status {
    text-align: center;
    padding: 15px;
    border-radius: 6px;
    margin: 15px 0;
}

.batch-status.processing {
    background: #e3f2fd;
    color: #1976d2;
}

.batch-status.completed {
    background: #e8f5e9;
    color: #388e3c;
}

.batch-status.error {
    background: #ffebee;
    color: #d32f2f;
}

.batch-results {
    margin-top: 20px;
}

.batch-result {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 10px;
    overflow: hidden;
}

.batch-result.completed {
    border-color: #4caf50;
}

.batch-result.failed {
    border-color: #f44336;
}

.result-info {
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.result-index {
    background: var(--primary-color);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9em;
    font-weight: bold;
    flex-shrink: 0;
}

.result-text {
    flex: 1;
    font-size: 0.9em;
    line-height: 1.4;
}

.download-btn {
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.85em;
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
    transition: background 0.3s ease;
}

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

.error-message {
    color: #f44336;
    font-size: 0.85em;
    font-style: italic;
}

/* Test Environment Indicator */
.test-indicator {
    position: fixed;
    top: 10px;
    left: 10px;
    background: #ff9800;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: bold;
    z-index: 9999;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Preview Error Notification */
.preview-error-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #f44336;
    color: white;
    padding: 10px 15px;
    border-radius: 4px;
    z-index: 10000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: slideInRight 0.3s ease;
}

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

/* Responsive Design for New Features */
@media (max-width: 768px) {
    .action-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .secondary-btn {
        width: 100%;
        justify-content: center;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .setting-group,
    .setting-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .setting-group label,
    .setting-row label {
        min-width: auto;
    }
    
    .result-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Dark Mode Support for New Features */
@media (prefers-color-scheme: dark) {
    .advanced-settings,
    .modal-content {
        background: var(--dark-bg);
        color: var(--dark-text);
    }
    
    .advanced-header,
    .modal-header {
        border-bottom-color: #444;
    }
    
    .batch-input textarea {
        background: #333;
        color: var(--dark-text);
        border-color: #555;
    }
    
    .batch-result {
        border-color: #555;
    }
}

/* Animation for expanding panels */
.advanced-content {
    transition: all 0.3s ease;
    overflow: hidden;
}

.advanced-content.collapsed {
    max-height: 0;
    padding: 0 20px;
}

.advanced-content.expanded {
    max-height: 500px;
    padding: 20px;
}