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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #8b5cf6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;
    
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background-color);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* GDPR Banner */
.gdpr-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    padding: 20px;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: none;
}

.gdpr-banner.show {
    display: block;
}

.gdpr-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.gdpr-text h3 {
    color: var(--text-primary);
    margin-bottom: 5px;
    font-size: 16px;
}

.gdpr-text p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 600px;
}

.gdpr-buttons {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

/* Header */
.header {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.nav-brand h1 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--border-light);
}

.language-selector select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-primary);
    cursor: pointer;
}

/* App Section */
.app-section {
    background: var(--surface-color);
    padding: 60px 0;
    border-bottom: 1px solid var(--border-light);
}

.app-header {
    text-align: center;
    margin-bottom: 50px;
}

.app-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.app-header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.app-container {
    display: grid;
    grid-template-columns: 320px 1fr 320px;
    gap: 30px;
    align-items: start;
}

/* Enhanced Control Panel */
.control-panel {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    height: fit-content;
    position: sticky;
    top: 100px;
    overflow: hidden;
}

.panel-section {
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    background: var(--surface-color);
}

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

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.section-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 8px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--background-color);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Enhanced Entries Section */
.entries-container {
    position: relative;
    margin-bottom: 16px;
}

#entries-input {
    width: 100%;
    min-height: 200px;
    max-height: 300px;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-family: 'Inter', monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    transition: var(--transition);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

#entries-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

#entries-input::placeholder {
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
}

.entries-counter {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

.quick-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow);
}

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

.btn-secondary {
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-sm:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

/* Examples Grid */
.examples-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 16px;
}

.example-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.example-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.example-card.active {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.example-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
}

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

/* Enhanced Color Customization */
.color-customization {
    margin-bottom: 24px;
}

.color-customization label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.color-presets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.color-preset {
    display: flex;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    background: var(--surface-color);
}

.color-preset:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.color-preset.active {
    border-color: var(--primary-color);
    background: var(--background-color);
    box-shadow: var(--shadow);
}

.color-swatch {
    flex: 1;
    height: 24px;
    border-radius: 4px;
    margin: 0 2px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.custom-colors {
    margin-top: 16px;
}

.custom-colors label {
    margin-bottom: 8px;
}

#custom-colors-input {
    width: 100%;
    height: 80px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--background-color);
    color: var(--text-primary);
    font-family: 'Inter', monospace;
    font-size: 13px;
    resize: vertical;
    margin-bottom: 8px;
}

#custom-colors-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Enhanced Settings Group */
.settings-group {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.setting-item {
    display: flex;
    flex-direction: column;
}

.setting-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 8px 0;
}

.setting-toggle input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    width: 44px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    position: relative;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.setting-toggle input[type="checkbox"]:checked + .toggle-slider {
    background: var(--primary-color);
}

.setting-toggle input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(20px);
}

.setting-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

.setting-label i {
    width: 16px;
    text-align: center;
    color: var(--text-secondary);
}

/* Enhanced Sliders */
.slider-label {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.duration-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Enhanced Ad Space */
.ad-space {
    padding: 20px;
    background: linear-gradient(135deg, var(--background-color), var(--surface-color));
    border-top: 1px solid var(--border-light);
}

.ad-placeholder {
    padding: 30px 20px;
    background: var(--surface-color);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    text-align: center;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ad-placeholder small {
    font-size: 12px;
    opacity: 0.7;
}

/* New Content Sections */
.content-section {
    padding: 80px 0;
}

.content-section.bg-light {
    background: var(--background-color);
}

.content-header {
    text-align: center;
    margin-bottom: 60px;
}

.content-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.content-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.content-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.content-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.content-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 32px;
}

.content-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.content-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Steps */
.steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 30px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Privacy Grid */
.privacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.privacy-item {
    padding: 40px;
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.privacy-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.privacy-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 40px 20px;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Features Section */
.features-section {
    padding: 80px 0;
    background: var(--surface-color);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--surface-color);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 32px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Use Cases Section */
.usecases-section {
    padding: 80px 0;
    background: var(--surface-color);
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.usecase-card {
    background: var(--surface-color);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.usecase-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.usecase-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 32px;
}

.usecase-icon.education { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.usecase-icon.business { background: linear-gradient(135deg, #10b981, #34d399); }
.usecase-icon.games { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.usecase-icon.personal { background: linear-gradient(135deg, #ef4444, #f87171); }

.usecase-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.usecase-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: var(--background-color);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: var(--transition-fast);
}

.faq-question:hover {
    background: var(--border-light);
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.faq-question i {
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-answer p {
    padding-bottom: 24px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    text-align: center;
    color: #94a3b8;
}

/* History Panel */
.history-panel {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.history-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.stat-item {
    background: var(--background-color);
    padding: 16px;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detailed-history {
    max-height: 300px;
    overflow-y: auto;
}

.history-record {
    padding: 12px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-record:last-child {
    border-bottom: none;
}

.history-record .entry {
    font-weight: 500;
}

.history-record .timestamp {
    font-size: 12px;
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 280px 1fr;
        gap: 20px;
    }
    
    .history-panel {
        grid-column: 1 / -1;
        position: static;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .control-panel, .history-panel {
        position: static;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface-color);
        padding: 20px;
        box-shadow: var(--shadow-lg);
    }
    
    .content-grid,
    .privacy-grid,
    .features-grid,
    .usecases-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-value {
        font-size: 2.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .gdpr-content {
        flex-direction: column;
        text-align: center;
    }
    
    .gdpr-buttons {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .control-panel, .history-panel {
        padding: 0;
    }
    
    .panel-section {
        padding: 20px;
    }
    
    .color-presets, .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .history-stats {
        grid-template-columns: 1fr;
    }
    
    .app-header h1 {
        font-size: 2rem;
    }
    
    .content-header h2 {
        font-size: 2rem;
    }
}