/* Content Pages - Mobile-first, optimized for readability */

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

html {
    font-size: 18px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background: #fafafa;
    padding: 0;
    margin: 0;
}

/* Header */
.header {
    background: white;
    border-bottom: 1px solid #e5e5e5;
    padding: 1rem 1.25rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.back-link:hover {
    color: #F97316;
}

.logo-small {
    height: 32px;
    width: auto;
}

/* Main Content */
.content {
    max-width: 680px;
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
}

/* Category Badge */
.category-badge {
    display: inline-block;
    background: #FFF7ED;
    color: #C2410C;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 1rem;
}

/* Title */
h1 {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.25;
    color: #0a0a0a;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

/* Intro/TLDR */
.intro {
    font-size: 1.15rem;
    color: #444;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e5e5e5;
}

/* Section Headers */
h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #0a0a0a;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

/* Paragraphs */
p {
    margin-bottom: 1.25rem;
    color: #333;
}

/* Lists */
ul, ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
    color: #333;
}

li::marker {
    color: #F97316;
}

/* Code - Inline */
code {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.9em;
    background: #f0f0f0;
    padding: 0.15em 0.4em;
    border-radius: 4px;
    color: #c7254e;
}

/* Code Blocks */
pre {
    background: #1e1e2e;
    border-radius: 12px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    -webkit-overflow-scrolling: touch;
}

pre code {
    background: none;
    padding: 0;
    color: #e5e5e5;
    font-size: 0.85rem;
    line-height: 1.6;
}

.code-keyword { color: #FF79C6; }
.code-func { color: #8BE9FD; }
.code-string { color: #50FA7B; }
.code-comment { color: #6272A4; }
.code-number { color: #BD93F9; }

/* Callout Boxes */
.callout {
    background: #FFF7ED;
    border-left: 4px solid #F97316;
    padding: 1rem 1.25rem;
    border-radius: 0 8px 8px 0;
    margin: 1.5rem 0;
}

.callout-title {
    font-weight: 600;
    color: #C2410C;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.callout p {
    margin: 0;
    color: #7c2d12;
    font-size: 0.95rem;
}

.callout.tip {
    background: #ECFDF5;
    border-left-color: #10B981;
}

.callout.tip .callout-title {
    color: #047857;
}

.callout.tip p {
    color: #064e3b;
}

/* Key Insight Box */
.key-insight {
    background: linear-gradient(135deg, #FFF7ED 0%, #FEF3C7 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid #FDE68A;
}

.key-insight-title {
    font-weight: 700;
    color: #92400E;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.key-insight p {
    color: #78350F;
    margin: 0;
    font-size: 1.05rem;
}

/* Complexity Table */
.complexity-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.complexity-table th,
.complexity-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e5e5;
}

.complexity-table th {
    background: #f5f5f5;
    font-weight: 600;
    color: #333;
}

.complexity-table td {
    color: #555;
}

.complexity-table code {
    font-size: 0.85em;
}

/* When to Use */
.when-to-use {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.when-to-use h3 {
    margin-top: 0;
    color: #0a0a0a;
}

.when-to-use ul {
    margin-bottom: 0;
}

/* Strong/Bold */
strong {
    font-weight: 600;
    color: #0a0a0a;
}

/* Emphasis */
em {
    font-style: italic;
    color: #444;
}

/* Links */
a {
    color: #F97316;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Footer CTA */
.footer-cta {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 16px;
    padding: 2rem;
    margin-top: 3rem;
    text-align: center;
}

.footer-cta h3 {
    margin-top: 0;
    font-size: 1.25rem;
}

.footer-cta p {
    color: #666;
    margin-bottom: 1.5rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #F97316;
    color: white;
    padding: 0.875rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s, transform 0.2s;
}

.cta-button:hover {
    background: #EA580C;
    transform: translateY(-2px);
    text-decoration: none;
}

/* Responsive - larger screens */
@media (min-width: 768px) {
    html {
        font-size: 19px;
    }

    .content {
        padding: 3rem 2rem 5rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    pre {
        padding: 1.5rem;
    }
}

/* Print styles */
@media print {
    .header, .footer-cta {
        display: none;
    }

    .content {
        max-width: 100%;
        padding: 0;
    }
}