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

:root {
    --bg-primary: #0D0D0D;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #262626;
    --text-primary: #ffffff;
    --text-muted: #9ca3af;
    --text-secondary: #d1d5db;
    --accent-blue: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #333333;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
}

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

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

/* Header */
header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Main Layout */
.main-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    padding: 2rem 20px;
    min-height: calc(100vh - 200px);
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 2rem;
    height: fit-content;
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.tool-list {
    list-style: none;
}

.tool-list li {
    margin-bottom: 0.25rem;
}

.tool-list a {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.tool-list a:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.tool-list a.active {
    background-color: var(--bg-tertiary);
    color: var(--accent-blue);
    font-weight: 500;
}

/* Main Content */
.main-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.tool-content {
    display: none;
}

.tool-content.active {
    display: block;
}

.tool-header {
    margin-bottom: 2rem;
}

.tool-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Editor */
.editor-wrapper {
    margin-bottom: 1.5rem;
}

.json-editor {
    width: 100%;
    min-height: 400px;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
}

.json-editor:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.json-editor.small {
    min-height: 300px;
}

.json-editor::placeholder {
    color: var(--text-muted);
}

/* Buttons */
.button-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

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

.btn-secondary:hover {
    background-color: #333333;
}

/* Result Area */
.result-area {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    min-height: 100px;
    max-height: 600px;
    overflow: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 13px;
    line-height: 1.6;
}

.result-area:empty::before {
    content: 'Results will appear here...';
    color: var(--text-muted);
}

.result-area.success {
    border-color: var(--success-color);
}

.result-area.error {
    border-color: var(--error-color);
}

.result-area pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--text-primary);
}

/* Diff Container */
.diff-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.diff-column h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

/* Tree View */
.tree-view {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
}

.tree-item {
    margin-left: 20px;
    position: relative;
}

.tree-key {
    color: #818cf8;
    font-weight: 600;
}

.tree-value {
    color: var(--text-primary);
}

.tree-string {
    color: #34d399;
}

.tree-number {
    color: #60a5fa;
}

.tree-boolean {
    color: #f59e0b;
}

.tree-null {
    color: var(--text-muted);
}

.tree-toggle {
    cursor: pointer;
    user-select: none;
    color: var(--text-muted);
    margin-right: 5px;
    display: inline-block;
    width: 12px;
}

.tree-toggle:hover {
    color: var(--accent-blue);
}

.tree-children {
    margin-left: 15px;
}

.tree-collapsed {
    display: none;
}

/* Diff Results */
.diff-added {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 3px solid var(--success-color);
    padding: 4px 8px;
    margin: 2px 0;
    display: block;
}

.diff-removed {
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--error-color);
    padding: 4px 8px;
    margin: 2px 0;
    display: block;
}

.diff-modified {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--warning-color);
    padding: 4px 8px;
    margin: 2px 0;
    display: block;
}

/* Options */
.path-query,
.sql-options,
.java-options,
.python-options,
.pretty-options {
    margin-bottom: 1.5rem;
}

.path-query label,
.sql-options label,
.java-options label,
.python-options label,
.pretty-options label {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.path-input,
.table-input {
    width: 100%;
    max-width: 500px;
    padding: 0.625rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.path-input:focus,
.table-input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.indent-select {
    padding: 0.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
}

/* Success/Error Messages */
.success-msg {
    color: var(--success-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.error-msg {
    color: var(--error-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.info-msg {
    color: var(--accent-blue);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Stats Display */
.stats {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--bg-primary);
    border-radius: 6px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.stat-value {
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 1.125rem;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
}

footer p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 240px 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .sidebar {
        position: relative;
        top: 0;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }

    .diff-container {
        grid-template-columns: 1fr;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .main-nav {
        gap: 1rem;
    }

    .stats {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .json-editor {
        font-size: 12px;
    }
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: #444444;
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Code Highlighting */
.json-key {
    color: #818cf8;
}

.json-string {
    color: #34d399;
}

.json-number {
    color: #60a5fa;
}

.json-boolean {
    color: #f59e0b;
}

.json-null {
    color: var(--text-muted);
}