@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@200;300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

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

:root {
    /* Enhanced modern color palette */
    --bg-primary: #161618;
    --bg-secondary: #1f1f23;
    --bg-tertiary: #28282e;
    --bg-hover: #2f2f35;
    --bg-card: #242428;
    --bg-elevated: #24242a;
    
    /* Border colors */
    --border-primary: #35353b;
    --border-secondary: #42424a;
    --border-accent: #5a5a62;
    --border-focus: #6b6b75;
    
    /* Text colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-disabled: #64748b;
    --text-accent: #6366f1;
    
    /* Accent colors - refined minimal theme */
    --accent-primary: #5a5a62;
    --accent-primary-hover: #6b6b75;
    --accent-primary-active: #4a4a52;
    --accent-secondary: #7a7a85;
    --accent-success: #5a5a62;
    --accent-success-hover: #6b6b75;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    --accent-highlight: #8b8b95;
    
    /* Enhanced shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.3);
    --shadow-accent: 0 4px 20px rgba(99, 102, 241, 0.25);
    --shadow-success: 0 4px 20px rgba(16, 185, 129, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    
    /* Border radius */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* Enhanced transitions */
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Spacing scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
}

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #1a1a1a;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    font-size: 14px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    padding: var(--space-12) 0;
    background: transparent;
    margin-bottom: 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

/* Logo Container */
.logo-container {
    flex-shrink: 0;
}

.header-logo {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: block;
}

/* Title Section */
.title-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    flex: 1;
}

.main-title {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 2.5rem;
    font-weight: 400;
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: #ffffff;
}

.title-primary {
    color: #ffffff;
    font-weight: 400;
}

.title-secondary {
    color: #ffffff;
    font-weight: 300;
    font-size: 0.8em;
    opacity: 0.8;
}

.subtitle {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
    margin: 0;
    letter-spacing: 0;
    line-height: 1.4;
}

/* Main Content */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-8);
    margin: var(--space-8) 0;
    padding: 0 var(--space-5);
    animation: fadeInUp 0.6s ease-out;
}

/* Upload Area */
.upload-area {
    background: var(--bg-card);
    border: 2px dashed var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-16) var(--space-8);
    text-align: center;
    transition: var(--transition-smooth);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: var(--accent-primary);
    border-radius: var(--radius-xl);
    opacity: 0;
    transition: var(--transition-smooth);
    filter: blur(30px);
    z-index: -1;
}

.upload-area:hover::before {
    opacity: 1;
}

.upload-area:hover {
    border-color: var(--border-secondary);
    background: var(--bg-elevated);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.2);
}

.upload-area:hover::before {
    opacity: 0;
}

.upload-area:active {
    transform: translateY(-2px);
    transition: var(--transition-fast);
}

.upload-area.drag-over {
    border-color: var(--border-accent);
    background: var(--bg-elevated);
    transform: scale(1.01);
    box-shadow: 0 8px 24px -8px rgba(0, 0, 0, 0.3);
    border-style: solid;
}

.upload-area.drag-over::before {
    background: radial-gradient(circle at center, rgba(139, 139, 149, 0.03) 0%, transparent 70%);
    opacity: 1;
}

.upload-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.upload-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: var(--space-5);
    display: block;
    transition: var(--transition-spring);
    position: relative;
    z-index: 1;
}

.upload-area:hover .upload-icon {
    color: var(--text-secondary);
    transform: scale(1.1) translateY(-2px);
}

.upload-area.drag-over .upload-icon {
    color: var(--text-primary);
    transform: scale(1.15) translateY(-4px);
    animation: bounce 0.6s ease-in-out;
}

.upload-area h3 {
    font-size: var(--text-lg);
    margin: 0;
    color: var(--text-primary);
    font-weight: 600;
}

.upload-area p {
    color: var(--text-muted);
    margin: 0;
    font-size: var(--text-sm);
    line-height: 1.5;
    max-width: 300px;
    text-align: center;
}

.browse-btn {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-secondary);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-lg);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    height: 52px;
    min-width: 160px;
    justify-content: center;
    position: relative;
    z-index: 1;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.browse-btn:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    border-color: var(--border-accent);
}

.browse-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.file-info {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-primary);
}

.file-info small {
    color: var(--text-muted);
    font-size: 13px;
}

/* Controls Section */
.controls-section {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    margin-top: var(--space-6);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 8px 32px -8px rgba(0, 0, 0, 0.08);
    animation: slideInRight 0.5s ease-out;
    position: relative;
}

.controls-section h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    letter-spacing: -0.025em;
}

/* Format Selection */
.format-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.format-option {
    cursor: pointer;
}

.format-option input[type="radio"] {
    display: none;
}

.format-label {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5) var(--space-6);
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    font-weight: 500;
    font-size: var(--text-sm);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.format-option input[type="radio"]:checked + .format-label {
    border-color: var(--border-accent);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    box-shadow: 0 0 0 1px var(--border-accent);
}

.format-label:hover {
    border-color: var(--border-secondary);
    background: var(--bg-tertiary);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.format-label i {
    font-size: 1.2rem;
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}

.option-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    cursor: pointer;
    padding: var(--space-5) var(--space-6);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    animation: fadeInUp 0.4s ease-out both;
}

.option-toggle:nth-child(1) { animation-delay: 0.1s; }
.option-toggle:nth-child(2) { animation-delay: 0.2s; }
.option-toggle:nth-child(3) { animation-delay: 0.3s; }
.option-toggle:nth-child(4) { animation-delay: 0.4s; }

.option-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.option-toggle:active {
    transform: scale(0.98);
    transition: var(--transition-fast);
}

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

.toggle-slider {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--bg-tertiary);
    border-radius: 26px;
    transition: var(--transition);
    flex-shrink: 0;
    border: 1px solid var(--border-primary);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: var(--transition-spring);
    box-shadow: var(--shadow-sm);
}

.option-toggle input[type="checkbox"]:checked + .toggle-slider {
    background: var(--accent-highlight);
    border-color: var(--accent-highlight);
    box-shadow: 0 0 0 2px rgba(139, 139, 149, 0.1);
}

.option-toggle input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(22px);
    box-shadow: var(--shadow);
}

.toggle-label {
    font-weight: 500;
    color: var(--text-primary);
    user-select: none;
    font-size: 15px;
}

/* Convert Button */
.convert-btn {
    width: 100%;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-secondary);
    padding: var(--space-5) var(--space-8);
    border-radius: var(--radius-lg);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    height: 60px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.convert-btn:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    border-color: var(--border-accent);
}

.convert-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.convert-btn:disabled {
    background: var(--text-disabled);
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-sm);
}

.convert-btn:disabled::before {
    display: none;
}

/* Preview Section */
.preview-section {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    margin-top: var(--space-6);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 8px 32px -8px rgba(0, 0, 0, 0.08);
    max-height: 500px;
    overflow: hidden;
    animation: fadeInUp 0.4s ease-out 0.2s both;
    position: relative;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
}

.preview-header h3 {
    color: var(--text-primary);
    font-size: var(--text-lg);
    font-weight: 600;
}

.copy-btn {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    height: 36px;
}

.copy-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.preview-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius);
    padding: 20px;
    font-family: 'IBM Plex Mono', 'JetBrains Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    color: var(--text-secondary);
}

/* Info Section */
.info-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.info-card h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
}

.info-card h3 i {
    color: var(--text-secondary);
    font-size: 18px;
}

.info-content p {
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.path-info {
    margin-top: 16px;
}

.path-item {
    margin-bottom: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border-left: 3px solid var(--border-accent);
}

.path-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 8px;
    font-size: 15px;
    font-weight: 600;
}

.path-item code {
    background: var(--bg-primary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-family: 'IBM Plex Mono', 'JetBrains Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
    color: var(--text-secondary);
    font-size: 13px;
}

.info-card ul {
    list-style: none;
    padding-left: 0;
}

.info-card li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
    color: var(--text-secondary);
    font-size: 15px;
}

.info-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-muted);
    font-weight: bold;
    font-size: 14px;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--space-12) 0;
    background: transparent;
    margin-top: var(--space-10);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 20px;
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 10px 16px;
    border-radius: var(--radius);
    transition: var(--transition);
    font-weight: 500;
    font-size: 14px;
}

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

.footer-links a i {
    font-size: 1.2rem;
}

.footer-info {
    border-top: 1px solid var(--border-primary);
    padding-top: 24px;
}

.disclaimer {
    color: var(--accent-warning);
    font-size: 14px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}

.disclaimer i {
    color: var(--accent-warning);
    font-size: 16px;
}

.made-with-love {
    color: var(--text-primary);
    font-size: 15px;
    margin-bottom: 12px;
    font-weight: 500;
}

.heart-icon {
    color: #e74c3c;
    animation: heartbeat 1.5s ease-in-out infinite;
}

.license {
    color: var(--text-muted);
    font-size: 13px;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    25% {
        transform: translateY(-8px) scale(1.05);
    }
    50% {
        transform: translateY(-4px) scale(1.02);
    }
    75% {
        transform: translateY(-2px) scale(1.01);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}



/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
    border: 2px solid var(--accent-primary);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 10;
}

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

.processing {
    animation: pulse 2s ease-in-out infinite;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    background: var(--accent-success);
    color: white;
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    transform: translateX(400px);
    transition: var(--transition-smooth);
    z-index: 1000;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    font-size: var(--text-sm);
    max-width: 300px;
}

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

.toast.error {
    background: var(--lms-accent-red);
}

.toast.warning {
    background: var(--lms-accent-yellow);
    color: var(--lms-bg-primary);
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--border-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .format-options {
        grid-template-columns: 1fr;
    }
    
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .header-logo {
        width: 56px;
        height: 56px;
    }
    
    .upload-area {
        padding: 40px 20px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer-links a {
        justify-content: center;
    }
    
    .disclaimer {
        flex-direction: column;
        gap: 5px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-3);
    }
    
    .main-title {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    .header-logo {
        width: 48px;
        height: 48px;
    }
    
    .upload-area {
        padding: 30px 15px;
    }
    
    .upload-icon {
        font-size: 3rem;
    }
    
    .header-logo {
        width: 70px;
        height: 70px;
    }
    
    .logo-container::before {
        top: -6px;
        left: -6px;
        right: -6px;
        bottom: -6px;
    }
    
    .footer-links {
        gap: 10px;
    }
    
    .toggle-slider {
        width: 36px;
        height: 18px;
    }
    
    .toggle-slider::before {
        width: 14px;
        height: 14px;
        top: 2px;
        left: 2px;
    }
    
    .option-toggle input[type="checkbox"]:checked + .toggle-slider::before {
        transform: translateX(18px);
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* File drag animation */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.upload-area.drag-over {
    animation: pulse 1s ease-in-out infinite;
}

/* Enhanced Focus States */
.browse-btn:focus,
.convert-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(139, 139, 149, 0.2);
}

.option-toggle:focus-within {
    outline: none;
    box-shadow: 0 0 0 2px rgba(139, 139, 149, 0.15);
}

.format-label:focus-within {
    outline: none;
    box-shadow: 0 0 0 2px rgba(139, 139, 149, 0.15);
}

/* Polished Interaction States */
.controls-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.preview-section:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}