/*
Theme Name: SummitBlog
Theme URI: https://summitcode.pro
Author: Summit Code Pro
Author URI: https://summitcode.pro
Description: A professional WordPress theme for Summit Code Pro featuring McKinsey-style editorial design with infinite scrolling, three-column grid layout, and sophisticated typography for long-form content.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: summitblog
Tags: blog, grid-layout, custom-menu, featured-images, threaded-comments
*/

/* ==========================================================================
   CSS Reset
   ========================================================================== */

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

* {
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap: break-word;
}

a {
    text-decoration: none;
    color: inherit;
}

ul,
ol {
    list-style: none;
}

/* ==========================================================================
   Accessibility Utilities
   ========================================================================== */

/* Screen reader only text - visually hidden but accessible */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    background-color: #f1f1f1;
    border-radius: 3px;
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
    clip: auto !important;
    clip-path: none;
    color: #21759b;
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px 14px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000;
}

/* Skip link for keyboard navigation */
.skip-link {
    background-color: var(--color-background);
    color: var(--color-primary);
    font-weight: 700;
    left: 0;
    padding: 15px 23px 14px;
    position: absolute;
    text-decoration: none;
    top: -100px;
    z-index: 100000;
}

.skip-link:focus {
    top: 0;
}

/* Focus visible styles for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Remove focus outline for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* ==========================================================================
   CSS Custom Properties (Typography & Colors)
   ========================================================================== */

:root {
    /* Typography Scale */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-family-heading: 'Georgia', 'Times New Roman', serif;
    
    /* Font Sizes - Typographic Scale (1.25 ratio) */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-md: 1.125rem;   /* 18px */
    --font-size-lg: 1.25rem;    /* 20px */
    --font-size-xl: 1.5rem;     /* 24px */
    --font-size-2xl: 1.875rem;  /* 30px */
    --font-size-3xl: 2.25rem;   /* 36px */
    --font-size-4xl: 3rem;      /* 48px */
    
    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;
    
    /* Colors - Dark theme with golden accents inspired by Odoo page */
    --color-primary: #f4c430;        /* Golden yellow */
    --color-primary-dark: #d4a017;   /* Darker golden */
    --color-accent: #ffd700;         /* Bright gold */
    --color-text: #ffffff;           /* White text */
    --color-text-light: #cccccc;     /* Light gray text */
    --color-text-muted: #999999;     /* Muted gray text */
    --color-text-dark: #333333;      /* Dark text for light backgrounds */
    --color-background: #1a1a1a;     /* Dark background */
    --color-background-alt: #2a2a2a; /* Slightly lighter dark */
    --color-background-card: #2d2d2d; /* Card background */
    --color-border: #404040;          /* Dark border */
    --color-border-dark: #555555;    /* Darker border */
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Layout */
    --max-width-content: 1200px;
    --max-width-article: 720px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* ==========================================================================
   Base Typography
   ========================================================================== */

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}


/* ==========================================================================
   Top Navigation
   ========================================================================== */

.top-nav {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-xl);
}

.nav-menu li a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-menu li a:hover {
    color: var(--color-primary);
}

.nav-menu li.active a {
    color: var(--color-primary);
}

.nav-menu li.active a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    left: 0;
    transition: transform var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* Hamburger animation when menu is open */
.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-background);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        gap: 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.is-open {
        display: flex;
    }
    
    .nav-menu li a {
        display: block;
        padding: var(--spacing-md);
    }
    
    .nav-menu li.active a::after {
        display: none;
    }
    
    .nav-menu li.active a {
        background: var(--color-background-alt);
        border-radius: 4px;
    }
}


/* ==========================================================================
   Site Header - Hero Section with Background
   ========================================================================== */

.site-header {
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.9), rgba(42, 42, 42, 0.8)), 
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="%23333" stroke-width="1" opacity="0.3"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    background-size: cover, 50px 50px;
    background-position: center, center;
    background-attachment: fixed;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.site-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(244, 196, 48, 0.1) 0%, 
        rgba(26, 26, 26, 0.8) 50%, 
        rgba(42, 42, 42, 0.9) 100%);
    pointer-events: none;
}

.header-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.header-content {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.site-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

.site-title a {
    color: var(--color-text);
    text-decoration: none;
}

.site-title a:hover {
    color: var(--color-primary);
}

.site-tagline {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.header-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.header-social a {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.header-social a:hover {
    color: var(--color-primary);
}

.header-browse {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.browse-label {
    color: var(--color-text-muted);
}

.browse-link {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

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

.browse-separator {
    color: var(--color-text-muted);
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */

.site-main {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}


/* ==========================================================================
   Site Footer
   ========================================================================== */

.site-footer {
    background: var(--color-background-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.footer-navigation {
    margin-bottom: var(--spacing-lg);
}

.footer-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-menu li a {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-menu li a:hover {
    color: var(--color-primary);
}

.footer-info {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.copyright a {
    color: var(--color-text-light);
}

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

/* ==========================================================================
   Topics Modal
   ========================================================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.is-open {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
}

.modal-content {
    position: relative;
    background: var(--color-background);
    padding: var(--spacing-2xl);
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    z-index: 1;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--color-text-muted);
    cursor: pointer;
    line-height: 1;
    padding: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-content h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xl);
    padding-right: var(--spacing-2xl);
}

.topics-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.topics-list li a {
    display: block;
    padding: var(--spacing-md);
    color: var(--color-text);
    background: var(--color-background-alt);
    border-radius: 4px;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.topics-list li a:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

.topics-list .count {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.topics-list li a:hover .count {
    color: rgba(255, 255, 255, 0.8);
}

/* Body scroll lock when modal is open */
body.modal-open {
    overflow: hidden;
}

/* Mobile modal styles (Requirements 12.4) */
@media (max-width: 768px) {
    .modal {
        align-items: flex-end;
    }
    
    .modal-content {
        width: 100%;
        max-width: 100%;
        padding: var(--spacing-lg);
        max-height: 85vh;
        border-radius: 16px 16px 0 0;
        margin: 0;
    }
    
    .modal-content h2 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-lg);
        text-align: center;
        padding-right: 0;
    }
    
    .modal-close {
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--color-background-alt);
        border-radius: 50%;
        font-size: var(--font-size-xl);
    }
    
    .topics-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        max-height: calc(85vh - 120px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .topics-list li a {
        padding: var(--spacing-md) var(--spacing-lg);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .topics-list .count {
        font-size: var(--font-size-xs);
    }
}


/* ==========================================================================
   Posts Grid Layout
   ========================================================================== */

.posts-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

/* Responsive Grid */
@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .posts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .posts-container {
        padding: 0 var(--spacing-md);
    }
}

/* Touch-friendly improvements for mobile (Requirements 12.5) */
@media (max-width: 768px) {
    /* Ensure smooth scrolling for infinite scroll */
    .posts-container,
    .single-post-container {
        -webkit-overflow-scrolling: touch;
    }
    
    /* Larger touch targets for mobile */
    .article-card {
        min-height: auto;
    }
    
    .card-title a,
    .card-category {
        padding: var(--spacing-sm);
        margin: calc(-1 * var(--spacing-sm));
    }
}

/* ==========================================================================
   Article Card Styles
   ========================================================================== */

.article-card {
    display: flex;
    flex-direction: column;
    background: var(--color-background-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.article-card:hover {
    box-shadow: 0 8px 25px rgba(244, 196, 48, 0.15);
    border-color: var(--color-primary);
}

.card-image {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-background-alt);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.article-card:hover .card-image img {
    transform: scale(1.05);
}

.card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background-alt);
}

.placeholder-icon {
    font-size: var(--font-size-4xl);
    opacity: 0.5;
}

.card-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin: var(--spacing-md) 0 var(--spacing-sm);
    padding: 0 var(--spacing-sm);
}

.card-title a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.card-title a:hover {
    color: var(--color-primary);
}

.card-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: 0 var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-normal);
    padding: 0 var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.card-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-background);
    background: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    margin: 0 var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    transition: background var(--transition-fast), color var(--transition-fast);
    align-self: flex-start;
}

.card-category:hover {
    background: var(--color-accent);
    color: var(--color-background);
}

/* ==========================================================================
   Email Signup Widget Styles
   ========================================================================== */

.signup-widget {
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--color-background-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-xl);
    min-height: 280px;
}

.signup-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.signup-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.signup-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.signup-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
}

.signup-email {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.signup-email:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.signup-email::placeholder {
    color: var(--color-text-muted);
}

.signup-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: var(--color-background);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.signup-submit:hover {
    background: var(--color-primary-dark);
}

.signup-submit .arrow {
    font-size: var(--font-size-lg);
}

.signup-error {
    font-size: var(--font-size-sm);
    color: #dc3545;
    margin-top: var(--spacing-xs);
}

.signup-message {
    font-size: var(--font-size-sm);
    color: #28a745;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(40, 167, 69, 0.1);
    border-radius: 4px;
}

/* ==========================================================================
   Loading Indicator and End Message (Requirements 4.2, 4.3, 10.3, 10.5)
   ========================================================================== */

.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-3xl) var(--spacing-lg);
    color: var(--color-text-muted);
}

.loading-indicator span {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.02em;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Pulse animation for loading text */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading-indicator span {
    animation: pulse 1.5s ease-in-out infinite;
}

.end-message {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xl);
}

.end-message p {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.end-message p::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-background-alt);
    border-radius: 50%;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

/* Responsive loading indicator */
@media (max-width: 768px) {
    .loading-indicator {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .spinner {
        width: 28px;
        height: 28px;
    }
    
    .end-message {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .end-message p::before {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-md);
    }
}

/* ==========================================================================
   No Posts Message
   ========================================================================== */

.no-posts {
    text-align: center;
    padding: var(--spacing-3xl);
}

.no-posts h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

.no-posts p {
    color: var(--color-text-light);
}

/* ==========================================================================
   Pagination (noscript fallback)
   ========================================================================== */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-2xl) 0;
}

.pagination .nav-links {
    display: flex;
    gap: var(--spacing-sm);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    text-decoration: none;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.pagination a:hover {
    background: var(--color-background-alt);
    border-color: var(--color-border-dark);
}

.pagination .current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-background);
}


/* ==========================================================================
   Single Post Layout
   ========================================================================== */

.single-post-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.single-post {
    max-width: 70%;
    margin: 0 auto;
}

/* Single page header - hide blog heading section */
.single-page-header {
    display: none;
}

.back-link {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    transition: color var(--transition-fast);
}

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

.post-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.post-featured-image {
    margin: var(--spacing-xl) 0;
}

.post-featured-image .featured-image {
    width: 100%;
    height: auto;
    border-radius: 4px;
}

/* Single post mobile responsiveness */
@media (max-width: 768px) {
    .single-post-container {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .single-post {
        max-width: 100%;
    }
    
    .post-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-md);
    }
    
    .back-link {
        margin-bottom: var(--spacing-lg);
        padding: var(--spacing-sm) 0;
    }
    
    .post-featured-image {
        margin: var(--spacing-lg) calc(-1 * var(--spacing-md));
        border-radius: 0;
    }
    
    .post-featured-image .featured-image {
        border-radius: 0;
    }
}

/* ==========================================================================
   Social Sharing Buttons
   ========================================================================== */

.social-sharing {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.social-sharing a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-text-light);
    background: var(--color-background-alt);
    border-radius: 50%;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.social-sharing a:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

/* ==========================================================================
   Post Metadata
   ========================================================================== */

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.post-meta .meta-label {
    color: var(--color-text-muted);
}

.post-meta a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.post-meta a:hover {
    color: var(--color-primary-dark);
}

.post-categories,
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.post-categories a,
.post-tags a {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-background-alt);
    border-radius: 2px;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.post-categories a:hover,
.post-tags a:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

/* Mobile styles for social sharing and post meta */
@media (max-width: 768px) {
    .social-sharing {
        gap: var(--spacing-sm);
    }
    
    .social-sharing a {
        width: 44px;
        height: 44px;
    }
    
    .post-meta {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .post-categories a,
    .post-tags a {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* ==========================================================================
   Article Content Typography (Requirements 5.5, 6.1, 6.3, 6.4)
   ========================================================================== */

.post-content {
    font-size: var(--font-size-md);
    line-height: var(--line-height-relaxed);
    color: var(--color-text);
}

/* Headings with typographic scale */
.post-content h1 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-top: var(--spacing-3xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.post-content h2 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.post-content h3 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.post-content h4 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.post-content h5 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.post-content h6 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Paragraphs with proper line-height and spacing */
.post-content p {
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
}

/* First paragraph after heading - no extra top margin */
.post-content h1 + p,
.post-content h2 + p,
.post-content h3 + p,
.post-content h4 + p,
.post-content h5 + p,
.post-content h6 + p {
    margin-top: 0;
}

/* Blockquotes with left border accent */
.post-content blockquote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-md) var(--spacing-xl);
    border-left: 4px solid var(--color-primary);
    background: var(--color-background-alt);
    font-style: italic;
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

.post-content blockquote p {
    margin-bottom: var(--spacing-sm);
}

.post-content blockquote p:last-child {
    margin-bottom: 0;
}

.post-content blockquote cite {
    display: block;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    font-style: normal;
    color: var(--color-text-muted);
}

.post-content blockquote cite::before {
    content: '— ';
}

/* Ordered lists with proper indentation and spacing */
.post-content ol {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-xl);
    list-style-type: decimal;
}

.post-content ol li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.post-content ol ol {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    list-style-type: lower-alpha;
}

.post-content ol ol ol {
    list-style-type: lower-roman;
}

/* Unordered lists with proper indentation and spacing */
.post-content ul {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-xl);
    list-style-type: disc;
}

.post-content ul li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.post-content ul ul {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    list-style-type: circle;
}

.post-content ul ul ul {
    list-style-type: square;
}

/* Nested list spacing */
.post-content li > ul,
.post-content li > ol {
    margin-top: var(--spacing-sm);
}


/* ==========================================================================
   Inline Link Styling (Requirements 6.2)
   McKinsey-style editorial link pattern
   ========================================================================== */

.post-content a {
    color: var(--color-primary);
    text-decoration: none;
    background-image: linear-gradient(
        to right,
        var(--color-primary) 0%,
        var(--color-primary) 100%
    );
    background-size: 100% 1px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: background-size var(--transition-fast), color var(--transition-fast);
}

.post-content a:hover {
    color: var(--color-primary-dark);
    background-size: 100% 2px;
}

.post-content a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Ensure visited links have subtle differentiation */
.post-content a:visited {
    color: var(--color-primary-dark);
}

/* Remove underline styling from images wrapped in links */
.post-content a:has(img) {
    background-image: none;
}

.post-content a img {
    transition: opacity var(--transition-fast);
}

.post-content a:hover img {
    opacity: 0.9;
}


/* ==========================================================================
   Standard Image Styling (Requirements 6.5)
   ========================================================================== */

.post-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--spacing-xl) auto;
    border-radius: 4px;
}

.post-content figure {
    margin: var(--spacing-xl) 0;
    max-width: 100%;
}

.post-content figure img {
    margin: 0 auto;
    width: 100%;
}

/* Caption styling below images */
.post-content figcaption {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
    font-style: italic;
    line-height: var(--line-height-normal);
}

/* WordPress block image alignment classes */
.post-content .aligncenter {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.post-content .alignleft {
    float: left;
    margin-right: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    max-width: 50%;
}

.post-content .alignright {
    float: right;
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    max-width: 50%;
}

/* WordPress block image with caption */
.post-content .wp-block-image {
    margin: var(--spacing-xl) 0;
}

.post-content .wp-block-image img {
    margin: 0;
}

.post-content .wp-block-image figcaption {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
}

/* Clear floats after floated images */
.post-content::after {
    content: '';
    display: table;
    clear: both;
}

/* Responsive image adjustments */
@media (max-width: 768px) {
    .post-content .alignleft,
    .post-content .alignright {
        float: none;
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
    }
}


/* ==========================================================================
   Offset Inline Image Styling (Requirements 6.6)
   Creates a distinctive image layout extending beyond the left content edge
   ========================================================================== */

.post-content .wp-block-image.is-style-offset-left,
.post-content figure.alignleft.offset-image,
.post-content .offset-left {
    width: calc(50% + 80px);
    max-width: none;
    margin-left: -80px;
    margin-right: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    float: left;
    clear: left;
}

.post-content .wp-block-image.is-style-offset-left img,
.post-content figure.alignleft.offset-image img,
.post-content .offset-left img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
}

/* Caption styling for offset images - aligned with content area */
.post-content .wp-block-image.is-style-offset-left figcaption,
.post-content figure.alignleft.offset-image figcaption,
.post-content .offset-left figcaption {
    padding-left: 80px;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
    text-align: left;
    font-style: italic;
}

/* Responsive: remove offset on smaller screens */
@media (max-width: 1024px) {
    .post-content .wp-block-image.is-style-offset-left,
    .post-content figure.alignleft.offset-image,
    .post-content .offset-left {
        width: 100%;
        max-width: 100%;
        margin-left: 0;
        margin-right: 0;
        float: none;
    }
    
    .post-content .wp-block-image.is-style-offset-left figcaption,
    .post-content figure.alignleft.offset-image figcaption,
    .post-content .offset-left figcaption {
        padding-left: 0;
        text-align: center;
    }
}

/* Clear floats after offset images in content */
.post-content .wp-block-image.is-style-offset-left + *,
.post-content figure.alignleft.offset-image + *,
.post-content .offset-left + * {
    clear: none;
}


/* ==========================================================================
   Related Posts Section (Requirements 7.1, 7.2, 7.3)
   ========================================================================== */

.related-posts {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.related-posts-heading {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.related-post-card {
    display: flex;
    flex-direction: column;
}

.related-post-image {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 4px;
    margin-bottom: var(--spacing-md);
    background: var(--color-background-alt);
}

.related-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.related-post-image:hover img {
    transform: scale(1.05);
}

.related-post-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
}

.related-post-image-placeholder .placeholder-icon {
    font-size: var(--font-size-3xl);
    opacity: 0.5;
}

.related-post-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.related-post-title a {
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.related-post-title a:hover {
    color: var(--color-primary);
}

.related-post-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    transition: gap var(--transition-fast);
}

.related-post-cta:hover {
    gap: var(--spacing-sm);
}

.related-post-cta .cta-arrow {
    transition: transform var(--transition-fast);
}

.related-post-cta:hover .cta-arrow {
    transform: translateX(4px);
}

/* Responsive: single column on mobile */
@media (max-width: 768px) {
    .related-posts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .related-posts-heading {
        font-size: var(--font-size-xl);
    }
}

/* ==========================================================================
   Single Post Infinite Scroll
   ========================================================================== */

.single-post-container {
    position: relative;
}

/* Post separator between infinite scroll loaded posts */
.post-separator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0;
    margin-bottom: var(--spacing-2xl);
}

.post-separator span {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--color-background-alt);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
}

/* Single post loading indicator */
#single-loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-3xl);
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-2xl);
}

#single-loading-indicator .spinner {
    width: 32px;
    height: 32px;
}

#single-loading-indicator span {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.02em;
    animation: pulse 1.5s ease-in-out infinite;
}

/* Single post end message */
#single-end-message {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-2xl);
}

#single-end-message p {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

#single-end-message p::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-background-alt);
    border-radius: 50%;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

/* AJAX loaded posts styling */
.single-post.ajax-loaded {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

/* Responsive adjustments for single post infinite scroll */
@media (max-width: 768px) {
    .post-separator {
        padding: var(--spacing-2xl) 0;
        margin-bottom: var(--spacing-xl);
    }
    
    .post-separator span {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    #single-loading-indicator,
    #single-end-message {
        padding: var(--spacing-2xl);
    }
    
    #single-loading-indicator .spinner {
        width: 28px;
        height: 28px;
    }
    
    #single-end-message p::before {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
}