:root {
    /* Light Theme */
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 12px;
}

/* Dark Theme */
body.dark {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f1f5f9;
    --border-color: #334155;
    --accent-color: #60a5fa;
    --accent-hover: #93c5fd;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

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

/* Header */
header {
    margin-bottom: 30px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 32px;
    color: var(--accent-color);
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1.2;
}

.tagline {
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
}

body.dark .tagline {
    color: #94a3b8;
}

/* Main Navigation */
.main-nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.nav-link i {
    font-size: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Theme Button */
.theme-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.3s ease;
}

.theme-btn:hover {
    transform: rotate(15deg);
    box-shadow: var(--shadow);
}

/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.left-controls, .right-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

/* Select Box */
.select-box {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    min-width: 180px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

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

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

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

.btn.danger {
    background: var(--danger-color);
    color: white;
}

.btn.danger:hover {
    background: #dc2626;
}

.btn.success {
    background: var(--success-color) !important;
    color: white !important;
    border-color: var(--success-color) !important;
}

/* Editors Container - 2 columns */
.editors-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.editor-column {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Editor Header */
.editor-header {
    padding: 15px 20px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: var(--radius) var(--radius) 0 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.editor-header h3 {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.stats {
    font-size: 13px;
    color: #64748b;
    font-weight: 500;
}

body.dark .stats {
    color: #94a3b8;
}

.output-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.language-badge {
    background: var(--accent-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: capitalize;
}

/* Editor Wrapper */
.editor-wrapper {
    flex: 1;
    display: flex;
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    min-height: 500px;
    overflow: hidden;
}

.line-numbers {
    width: 60px;
    background: var(--bg-color);
    padding: 15px 10px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: #64748b;
    text-align: right;
    user-select: none;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
}

body.dark .line-numbers {
    color: #94a3b8;
    background: #1e293b;
}

.line-numbers div {
    padding: 0 10px;
    line-height: 1.5;
    min-height: 20px;
}

textarea {
    flex: 1;
    padding: 15px;
    border: none;
    background: transparent;
    color: var(--text-color);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: none;
    outline: none;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
    overflow-y: auto;
    tab-size: 4;
}

textarea:focus {
    outline: none;
}

#outputCode {
    background: var(--card-bg);
    color: var(--text-color);
}

/* Info Section */
.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.info-card {
    padding: 25px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card i {
    font-size: 40px;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.info-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--accent-color);
}

.info-card p {
    font-size: 14px;
    color: #64748b;
}

body.dark .info-card p {
    color: #94a3b8;
}

/* Related Tools */
.related-tools {
    margin: 50px 0 30px;
}

.related-tools h3 {
    font-size: 24px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.tool-card {
    display: block;
    padding: 25px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    text-align: center;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--accent-color);
    background: var(--accent-color);
    color: white;
}

.tool-card:hover i,
.tool-card:hover h4,
.tool-card:hover p {
    color: white;
}

.tool-card i {
    font-size: 32px;
    color: var(--accent-color);
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.tool-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--accent-color);
    transition: color 0.3s ease;
}

.tool-card p {
    font-size: 14px;
    color: #64748b;
    transition: color 0.3s ease;
}

body.dark .tool-card p {
    color: #94a3b8;
}

/* Ad Section */
.ad-section {
    margin: 40px 0;
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border-color);
}

/* Footer */
footer {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-logo i {
    font-size: 32px;
    color: var(--accent-color);
}

.footer-logo h4 {
    font-size: 20px;
    margin-bottom: 5px;
    color: var(--accent-color);
}

.footer-logo p {
    font-size: 14px;
    color: #64748b;
}

body.dark .footer-logo p {
    color: #94a3b8;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links h5 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-about h5 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.footer-about p {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.6;
}

body.dark .footer-about p {
    color: #94a3b8;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-color);
    font-size: 18px;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 10px;
}

body.dark .footer-bottom p {
    color: #94a3b8;
}

.footer-bottom a {
    color: var(--accent-color);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

.footer-note {
    font-size: 12px;
    color: #94a3b8;
    font-style: italic;
}

body.dark .footer-note {
    color: #64748b;
}

/* Spinner animation */
.fa-spin {
    animation: spin 1s linear infinite;
}

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

/* Scrollbar styling */
textarea::-webkit-scrollbar,
.line-numbers::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

textarea::-webkit-scrollbar-track,
.line-numbers::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb,
.line-numbers::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb:hover,
.line-numbers::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

body.dark textarea::-webkit-scrollbar-track,
body.dark .line-numbers::-webkit-scrollbar-track {
    background: #2d3748;
}

body.dark textarea::-webkit-scrollbar-thumb,
body.dark .line-numbers::-webkit-scrollbar-thumb {
    background: #4a5568;
}

body.dark textarea::-webkit-scrollbar-thumb:hover,
body.dark .line-numbers::-webkit-scrollbar-thumb:hover {
    background: #718096;
}

/* Hide file input */
#fileInput {
    display: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .editors-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .editor-wrapper {
        min-height: 400px;
    }
    
    .logo-area {
        gap: 20px;
    }
    
    .main-nav {
        gap: 10px;
    }
    
    .nav-link {
        padding: 8px 12px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 20px;
        align-items: stretch;
    }
    
    .logo-area {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .main-nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .left-controls, .right-controls {
        width: 100%;
        justify-content: center;
    }
    
    .editor-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .header-left {
        flex-direction: column;
        gap: 5px;
    }
    
    .info-section,
    .tools-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .editor-wrapper {
        min-height: 300px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 24px;
    }
    
    .tagline {
        font-size: 12px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .select-box {
        min-width: 150px;
        font-size: 13px;
    }
    
    .nav-link span {
        display: none;
    }
    
    .nav-link i {
        font-size: 18px;
    }
    
    .related-tools h3 {
        font-size: 20px;
    }
    
    .tool-card {
        padding: 20px;
    }
}