/* pSEO Pages - Extends content.css styles */

* {
    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;
    padding-bottom: 80px; /* Space for sticky CTA */
}

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

.header-content {
    max-width: 800px;
    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;
}

/* ============================================
   Breadcrumb Navigation
   ============================================ */
.breadcrumb {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem 1.25rem;
    font-size: 0.85rem;
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 0.5rem;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    color: #666;
    margin: 0;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: #ccc;
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #F97316;
}

.breadcrumb [aria-current="page"] {
    color: #333;
    font-weight: 500;
}

/* ============================================
   Main Content
   ============================================ */
.content {
    max-width: 800px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 4rem;
}

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

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: 1.5rem;
    margin-bottom: 0.75rem;
}

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

strong {
    font-weight: 600;
    color: #0a0a0a;
}

/* ============================================
   Category/Pattern 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;
}

.pattern-badge {
    display: inline-block;
    background: #EEF2FF;
    color: #4338CA;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
    text-decoration: none;
}

.pattern-badge:hover {
    background: #E0E7FF;
    text-decoration: none;
}

/* ============================================
   Difficulty Badges
   ============================================ */
.difficulty {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
    text-transform: capitalize;
}

.difficulty-easy {
    background: #ECFDF5;
    color: #047857;
}

.difficulty-medium {
    background: #FEF3C7;
    color: #B45309;
}

.difficulty-hard {
    background: #FEE2E2;
    color: #DC2626;
}

/* ============================================
   Problem Page Specific
   ============================================ */
.problem-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e5e5;
}

.problem-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1rem;
}

.time-estimate {
    color: #666;
    font-size: 0.85rem;
}

.problem-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.problem-tags .tag {
    background: #f5f5f5;
    color: #666;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

/* Problem Statement */
.problem-statement {
    margin-bottom: 2rem;
}

.statement-text {
    background: #f9f9f9;
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.examples {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 1.25rem;
}

.example {
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
}

.example:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.example-label {
    font-weight: 600;
    color: #666;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.example-input,
.example-output {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
    background: #f5f5f5;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.example-explanation {
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
}

/* ============================================
   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;
}

.one-liner {
    margin-top: 0.75rem;
    color: #92400E !important;
}

/* ============================================
   Trigger Words
   ============================================ */
.trigger-words {
    background: #f0f9ff;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.triggers {
    display: inline;
}

.trigger-tag {
    display: inline-block;
    background: #dbeafe;
    color: #1e40af;
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    margin: 0.25rem 0.25rem 0.25rem 0;
}

.trigger-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ============================================
   Reasoning Steps
   ============================================ */
.reasoning-steps {
    margin-top: 1.5rem;
}

.reasoning-step {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: #F97316;
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: 50%;
    margin-right: 0.75rem;
}

.step-question {
    font-weight: 600;
    color: #0a0a0a;
    margin-bottom: 0.75rem;
}

.step-answer {
    background: #ECFDF5;
    border-left: 3px solid #10B981;
    padding: 0.75rem 1rem;
    border-radius: 0 8px 8px 0;
    margin-bottom: 0.75rem;
}

.step-answer strong {
    color: #047857;
}

.step-explanation {
    color: #666;
    font-size: 0.95rem;
}

/* ============================================
   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;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

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;
}

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

/* ============================================
   Complexity Table
   ============================================ */
.complexity-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 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;
    width: 40%;
}

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

/* ============================================
   CTA Boxes
   ============================================ */
.cta-box {
    background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%);
    border: 1px solid #FED7AA;
    border-radius: 16px;
    padding: 2rem;
    margin: 2.5rem 0;
    text-align: center;
}

.cta-box h2 {
    margin-top: 0;
    font-size: 1.5rem;
    color: #C2410C;
}

.cta-box p {
    color: #7c2d12;
    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: all 0.2s;
}

.cta-button:hover {
    background: #EA580C;
    transform: translateY(-2px);
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.cta-primary {
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

/* Sticky Mobile CTA */
.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #e5e5e5;
    padding: 1rem;
    z-index: 99;
    display: flex;
    justify-content: center;
}

.sticky-cta .cta-button {
    width: 100%;
    max-width: 400px;
    justify-content: center;
}

@media (min-width: 768px) {
    .sticky-cta {
        display: none;
    }

    body {
        padding-bottom: 0;
    }
}

/* ============================================
   Related Problems / Aside
   ============================================ */
.related-problems,
.related-patterns,
.related-comparisons,
.other-cheatsheets {
    background: #f9f9f9;
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.related-problems h3,
.related-patterns h3,
.related-comparisons h3,
.other-cheatsheets h3 {
    margin-top: 0;
    font-size: 1.1rem;
}

.problem-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.problem-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
}

.problem-list li:last-child {
    border-bottom: none;
}

.problem-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #333;
    text-decoration: none;
}

.problem-list a:hover {
    color: #F97316;
}

.see-all-link {
    display: inline-block;
    margin-top: 1rem;
    color: #F97316;
    font-weight: 500;
}

/* ============================================
   Pattern Hub Specific
   ============================================ */
.pattern-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e5e5;
}

.pattern-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.stat {
    text-align: center;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    border: 1px solid #e5e5e5;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #0a0a0a;
}

.stat-label {
    font-size: 0.8rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.difficulty-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tab {
    padding: 0.5rem 1rem;
    background: #f5f5f5;
    border-radius: 8px;
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.tab:hover {
    background: #e5e5e5;
}

.tab.active {
    background: #F97316;
    color: white;
}

.problems-grid {
    display: grid;
    gap: 1rem;
}

.problem-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.2s;
}

.problem-card:hover {
    border-color: #F97316;
    transform: translateX(4px);
}

.problem-card-title {
    color: #0a0a0a;
    font-weight: 500;
}

.problem-card .difficulty {
    font-size: 0.7rem;
}

/* Cheatsheet link */
.cheatsheet-link {
    margin-top: 2rem;
}

.cheatsheet-link a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: #EEF2FF;
    border-radius: 10px;
    color: #4338CA;
    text-decoration: none;
    font-weight: 500;
}

.cheatsheet-link a:hover {
    background: #E0E7FF;
}

.cheatsheet-icon {
    font-size: 1.25rem;
}

.arrow {
    margin-left: auto;
}

/* ============================================
   Comparison Page Specific
   ============================================ */
.comparison-header {
    margin-bottom: 2rem;
}

.tldr-box {
    background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid #A7F3D0;
}

.tldr-box p {
    margin-bottom: 0.75rem;
    color: #065F46;
    font-size: 1.05rem;
}

.tldr-box p:last-child {
    margin-bottom: 0;
}

.comparison-table-section {
    margin: 2rem 0;
}

/* Card-based comparison instead of table */
.comparison-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

.compare-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    border: 2px solid #e5e5e5;
    transition: all 0.2s;
}

.compare-card-orange {
    border-color: #F97316;
    background: linear-gradient(180deg, #FFF7ED 0%, #FFFFFF 100%);
}

.compare-card-purple {
    border-color: #6366F1;
    background: linear-gradient(180deg, #EEF2FF 0%, #FFFFFF 100%);
}

.compare-card-header {
    text-align: center;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid #e5e5e5;
}

.compare-card-orange .compare-card-header {
    border-color: #FED7AA;
}

.compare-card-purple .compare-card-header {
    border-color: #C7D2FE;
}

.compare-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.compare-card-orange .compare-card-title {
    color: #C2410C;
}

.compare-card-purple .compare-card-title {
    color: #4338CA;
}

.compare-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.compare-item:last-child {
    border-bottom: none;
}

.compare-item-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #666;
    margin-bottom: 0.25rem;
}

.compare-item-value {
    color: #1a1a1a;
    font-size: 0.95rem;
}

/* Card comparison rows - new structure */
.compare-card-rows {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.compare-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.compare-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #666;
}

.compare-value {
    color: #1a1a1a;
    font-size: 0.95rem;
    line-height: 1.4;
}

.compare-value code {
    background: #f3f4f6;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

.compare-card-orange .compare-card-header {
    color: #C2410C;
}

.compare-card-purple .compare-card-header {
    color: #4338CA;
}

.compare-item-value code {
    background: #f5f5f5;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* VS Badge */
.vs-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin: -0.5rem 0;
    z-index: 10;
}

.vs-badge span {
    background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    border-radius: 100px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

@media (max-width: 640px) {
    .comparison-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Legacy table styling (fallback) */
.table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    min-width: 500px;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e5e5e5;
}

.comparison-table th {
    background: #f9f9f9;
    padding: 1rem;
    font-weight: 600;
    text-align: left;
}

.comparison-table td {
    padding: 1rem;
    border-top: 1px solid #e5e5e5;
}

.comparison-table th:first-child {
    width: 25%;
}

.decision-flowchart {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 1.5rem;
}

.decision-item {
    padding: 1rem;
    margin-bottom: 0.75rem;
    background: #f9f9f9;
    border-radius: 8px;
}

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

.example-box {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 10px;
    padding: 1.25rem;
}

.example-box h3 {
    margin-top: 0;
    font-size: 0.95rem;
    color: #666;
}

.example-link {
    display: block;
    color: #0a0a0a;
    font-weight: 500;
}

/* ============================================
   Cheatsheet Page Specific
   ============================================ */
.cheatsheet-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e5e5;
}

.cheatsheet-section {
    margin-bottom: 2.5rem;
}

.trigger-section .trigger-tags {
    justify-content: flex-start;
}

.variations-list {
    list-style: none;
    padding: 0;
}

.variations-list li {
    padding: 0.75rem 1rem;
    background: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.problems-mini-grid {
    display: grid;
    gap: 0.75rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: white;
    border-top: 1px solid #e5e5e5;
    padding: 2rem 1.25rem;
    margin-top: 3rem;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.footer-content p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-nav a {
    color: #666;
    font-size: 0.9rem;
}

.footer-nav a:hover {
    color: #F97316;
}

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

    .content {
        padding: 2rem 2rem 4rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .pattern-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 480px) {
    .pattern-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .difficulty-tabs {
        flex-direction: column;
    }
}

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

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

    body {
        padding-bottom: 0;
    }
}