/* DevToolbox — Core Styles */
:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface-hover: #232733;
    --border: #2a2e3a;
    --text: #e4e4e7;
    --text-muted: #9ca3af;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #10b981;
    --code-bg: #1e2130;
    --radius: 8px;
    --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

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

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* Navigation */
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
}

.logo:hover { color: var(--primary); }

.logo-icon {
    font-family: 'SF Mono', 'Fira Code', monospace;
    background: var(--primary);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

header {
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 1.5rem 3rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--text), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
}

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

.hero-stats .stat strong {
    color: var(--primary);
    font-size: 1.2rem;
    font-weight: 700;
}

.hero-stats .stat-divider {
    width: 4px;
    height: 4px;
    background: var(--border);
    border-radius: 50%;
}

.search-box {
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    width: 100%;
    padding: 0.85rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.search-box input:focus {
    border-color: var(--primary);
}

.search-box input::placeholder { color: var(--text-muted); }

/* Tools Grid */
.tools-grid, .cheatsheets-section, .features {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.tools-grid h2, .cheatsheets-section h2, .features h2 {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    color: var(--text);
}

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

.tool-card {
    display: block;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.2s;
    color: var(--text);
}

.tool-card:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    color: var(--text);
}

.tool-icon {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.tool-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
}

.tool-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature {
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.feature h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.feature p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Footer */
footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer p + p { margin-top: 0.25rem; }

/* Tool Page Layout */
.tool-page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.tool-page h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.tool-page .description {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.tool-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tool-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.tool-panel label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

textarea, .code-output {
    width: 100%;
    min-height: 300px;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--code-bg);
    color: var(--text);
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: vertical;
    outline: none;
    tab-size: 2;
}

textarea:focus { border-color: var(--primary); }

.code-output {
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.tool-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

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

.status-bar {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 0.5rem 0;
}

.status-bar.success { color: var(--accent); }
.status-bar.error { color: #ef4444; }

/* Single column layout for some tools */
.tool-container.single {
    grid-template-columns: 1fr;
}

/* Cheatsheet page styles */
.cheatsheet-page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.cheatsheet-page h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.cheatsheet-page .description {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.cheatsheet-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
}

.cheatsheet-table th,
.cheatsheet-table td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    text-align: left;
}

.cheatsheet-table th {
    background: var(--surface);
    font-weight: 600;
    color: var(--primary);
}

.cheatsheet-table td {
    background: var(--code-bg);
}

.cheatsheet-table code {
    background: var(--surface);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.cheatsheet-table tr:hover td {
    background: var(--surface);
}

/* Section headers in cheatsheets */
.section-header {
    font-size: 1.35rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero { padding: 2.5rem 1rem 2rem; }
    .hero h1 { font-size: 1.75rem; }
    .hero p { font-size: 1rem; }
    .tool-container { grid-template-columns: 1fr; }
    .nav-links { gap: 1rem; font-size: 0.85rem; }
    .grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    .tool-page { padding: 1.5rem 1rem; }
    .tool-page h1 { font-size: 1.5rem; }
    .tool-actions { gap: 0.35rem; }
    .tool-actions .btn { padding: 0.5rem 0.85rem; font-size: 0.8rem; min-height: 44px; }
    textarea, .code-output { min-height: 200px; font-size: 0.85rem; }
    .features-grid { grid-template-columns: 1fr; }
    .cheatsheet-table { display: block; overflow-x: auto; white-space: nowrap; }
    .blog-post { padding: 1.5rem 1rem; }
    .blog-post h1 { font-size: 1.5rem; }
    .blog-post pre { font-size: 0.8rem; padding: 0.75rem; }
    .section-header { font-size: 1.1rem; }
    .breadcrumb { font-size: 0.8rem; padding: 0.5rem 1rem 0; }
    .btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
    .related-tools .grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    nav { padding: 0.75rem 1rem; }
    .logo { font-size: 1.1rem; }
    .nav-links { gap: 0.75rem; font-size: 0.8rem; }
    .hero h1 { font-size: 1.4rem; }
    .tool-page h1 { font-size: 1.3rem; }
    .tool-actions { flex-wrap: wrap; }
    .tool-card { padding: 1rem; }
    .tool-card h3 { font-size: 1rem; }
    .tool-card p { font-size: 0.85rem; }
    .grid { grid-template-columns: 1fr; }
}

/* Blog styles */
.blog-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.blog-page h1 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

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

.blog-list li {
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.blog-list li:hover {
    border-color: var(--primary);
}

.blog-list h3 { margin-bottom: 0.5rem; }

.blog-list .date {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.blog-list p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.blog-post {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.blog-post h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.blog-post .meta {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.blog-post h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

.blog-post h3 {
    font-size: 1.2rem;
    margin: 1.5rem 0 0.75rem;
}

.blog-post p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.blog-post code {
    background: var(--surface);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9em;
}

.blog-post pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.blog-post pre code {
    background: none;
    padding: 0;
}

.blog-post ul, .blog-post ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.blog-post li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

/* Related tools section */
.related-tools {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.related-tools h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.related-tools .grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* Breadcrumbs */
.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.75rem 1.5rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span.separator { margin: 0 0.5rem; opacity: 0.5; }
.breadcrumb span.current { color: var(--text); }

/* Embed banner */
.embed-banner {
    max-width: var(--max-width);
    margin: 1rem auto 0;
    padding: 0.75rem 1.5rem;
}

.embed-banner details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
}

.embed-banner summary {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.embed-banner pre {
    margin-top: 0.5rem;
    background: var(--code-bg);
    padding: 0.75rem;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.8rem;
}

.embed-banner code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--text);
}