/*
 * Main Stylesheet for CodeCraft
 */

/* 1. CSS Variables & Theme Setup
--------------------------------------------- */
:root { /* Dark Theme */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --spacing-unit: 1.5rem;
    --color-bg: #1a1b26;
    --color-surface: #24283b;
    --color-text-primary: #c0caf5;
    --color-text-secondary: #a9b1d6;
    --color-headings: #ffffff;
    --color-accent: #7aa2f7;
    --color-border: #414868;
}
[data-theme="light"] {
    --color-bg: #eff1f5;
    --color-surface: #ffffff;
    --color-text-primary: #4c4f69;
    --color-text-secondary: #5c5f77;
    --color-headings: #313244;
    --color-accent: #1e66f5;
    --color-border: #ccd0da;
}

/* 2. Global Styles & Resets
--------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
body { background-color: var(--color-bg); color: var(--color-text-primary); font-family: var(--font-primary); line-height: 1.6; margin: 0; transition: background-color 0.3s ease, color 0.3s ease; }
a { color: var(--color-accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--color-text-primary); }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-mono); color: var(--color-headings); line-height: 1.2; margin: calc(var(--spacing-unit) * 1.5) 0 var(--spacing-unit); }
img { max-width: 100%; height: auto; display: block; }
.main-container { max-width: 1200px; margin: 0 auto; padding: var(--spacing-unit); }
.site-main { padding-top: var(--spacing-unit); }

/* 3. Header & Navigation
--------------------------------------------- */
#reading-progress-bar { position: fixed; top: 0; left: 0; height: 4px; background-color: var(--color-accent); width: 0%; z-index: 9999; transition: width 0.1s linear; }
.site-header { background-color: var(--color-surface); border-bottom: 1px solid var(--color-border); padding: 0 var(--spacing-unit); position: sticky; top: 0; z-index: 1000; }
.header-container { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; height: 70px; }
.site-title { font-size: 1.5rem; font-weight: 700; margin: 0; }
.main-navigation ul { margin: 0; padding: 0; list-style: none; display: flex; gap: var(--spacing-unit); }
.main-navigation a { font-weight: 700; font-size: 0.9rem; text-transform: uppercase; padding: 0.5em 0; border-bottom: 2px solid transparent; }
.main-navigation a:hover, .main-navigation .current-menu-item > a { color: var(--color-headings); border-bottom-color: var(--color-accent); }
.main-navigation .sub-menu { display: none; } /* Hide dropdowns for a clean look */
#theme-toggle { background: none; border: none; cursor: pointer; padding: 0; font-size: 1.5rem; line-height: 1; }
.icon-moon { display: none; }
[data-theme="light"] .icon-moon { display: inline; }
[data-theme="light"] .icon-sun { display: none; }
#live-search-container { position: relative; }
#live-search-field { background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: 4px; padding: 8px 12px; color: var(--color-text-primary); font-family: var(--font-primary); width: 250px; }
#live-search-results { position: absolute; top: 110%; left: 0; width: 100%; background-color: var(--color-surface); border: 1px solid var(--color-border); border-radius: 4px; z-index: 1001; box-shadow: 0 5px 15px rgba(0,0,0,0.2); display: none; }
#live-search-results ul { list-style: none; margin: 0; padding: 0; }
#live-search-results a { display: flex; align-items: center; gap: 10px; padding: 10px; border-bottom: 1px solid var(--color-border); }
.search-result-img, .search-result-img-placeholder { width: 40px; height: 40px; object-fit: cover; border-radius: 4px; background-color: var(--color-bg); flex-shrink: 0; }
.search-result-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#live-search-results li:last-child a { border-bottom: none; }
#live-search-results a:hover { background-color: var(--color-bg); }
.no-results { padding: 15px; color: var(--color-text-secondary); }

/* 4. Homepage & Archive Grids
--------------------------------------------- */
.homepage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-unit); }
.related-posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-unit); }
.archive-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--spacing-unit); }
.post-card { background-color: var(--color-surface); border: 1px solid var(--color-border); border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out; }
.post-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.2); }
.post-card-featured { grid-column: 1 / -1; }
.post-card-thumbnail { aspect-ratio: 16 / 9; overflow: hidden; background-color: var(--color-bg); }
.post-card-thumbnail img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.post-card:hover .post-card-thumbnail img { transform: scale(1.05); }
.post-card-content { padding: var(--spacing-unit); }
.post-card .entry-title { font-size: 1.25rem; margin: 0 0 0.5rem; }
.post-card .entry-title a { color: var(--color-headings); text-decoration: none; }
.post-card .entry-title a:hover { color: var(--color-accent); }
.post-card .entry-meta { font-size: 0.8rem; color: var(--color-text-secondary); }
.post-card-featured .entry-title { font-size: 2rem; }

/* 5. Single Post Layout
--------------------------------------------- */
.single-post-container, .after-content-area, .further-reading-area { max-width: 800px; margin: 0 auto; padding: 0 var(--spacing-unit); }
.single-post-layout .entry-title { font-size: clamp(2.5rem, 5vw, 4rem); text-align: center; margin-bottom: var(--spacing-unit); }
.single-post-layout .entry-meta { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 0.5rem 1rem; color: var(--color-text-secondary); font-size: 0.9rem; margin-bottom: calc(var(--spacing-unit) * 2); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); padding: var(--spacing-unit) 0; }
.entry-content { font-size: 1.1rem; line-height: 1.7; }
.entry-content img { border-radius: 4px; cursor: zoom-in; }
.advertisement { margin: var(--spacing-unit) 0; text-align: center; }

/* 6. After Content Sections
--------------------------------------------- */
.post-actions-bar { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; padding: var(--spacing-unit); margin-top: calc(var(--spacing-unit) * 2); border-top: 1px solid var(--color-border); }
.action-button { background-color: var(--color-surface); border: 1px solid var(--color-border); color: var(--color-text-secondary); padding: 10px 15px; border-radius: 20px; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: all 0.2s ease; position: relative; }
.action-button:hover:not(:disabled) { background-color: var(--color-bg); color: var(--color-text-primary); border-color: var(--color-accent); }
.action-button:disabled { opacity: 0.7; cursor: not-allowed; }
.action-button.liked { color: #ff6b6b; border-color: #ff6b6b; }
.action-button .tooltip-text { visibility: hidden; width: 80px; background-color: var(--color-accent); color: #fff; text-align: center; border-radius: 6px; padding: 5px 0; position: absolute; z-index: 1; bottom: 125%; left: 50%; margin-left: -40px; opacity: 0; transition: opacity 0.3s; }
.action-button.copied .tooltip-text { visibility: visible; opacity: 1; }
.author-box, .post-navigation, .related-posts { margin-top: calc(var(--spacing-unit) * 2); }
.author-box { display: flex; gap: var(--spacing-unit); align-items: center; background-color: var(--color-surface); padding: var(--spacing-unit); border-radius: 8px; }
.author-avatar img { border-radius: 50%; }

/* NEW: Styles for Post Navigation */
.post-navigation .nav-links { display: flex; justify-content: space-between; gap: var(--spacing-unit); }
.post-navigation .nav-previous, .post-navigation .nav-next { flex-basis: 0; flex-grow: 1; }
.post-navigation a { display: block; padding: var(--spacing-unit); background-color: var(--color-surface); border: 1px solid var(--color-border); border-radius: 8px; text-decoration: none; height: 100%; transition: border-color 0.2s ease; }
.post-navigation a:hover { border-color: var(--color-accent); }
.nav-title-wrapper { display: block; }
.nav-label { font-size: 0.8rem; color: var(--color-text-secondary); text-transform: uppercase; }
.nav-title { font-family: var(--font-mono); color: var(--color-headings); display: block; margin-top: 0.25rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-next { text-align: right; }

.related-posts { border-top: 1px solid var(--color-border); padding-top: var(--spacing-unit); }
.related-posts-title { text-align: center; }

/* 7. Social Share Modal
--------------------------------------------- */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.modal-content { background: var(--color-surface); padding: calc(var(--spacing-unit) * 2); border-radius: 8px; position: relative; width: 90%; max-width: 400px; }
.modal-close { position: absolute; top: 10px; right: 15px; background: none; border: none; font-size: 2rem; color: var(--color-text-secondary); cursor: pointer; }
.social-share-links { display: flex; flex-direction: column; gap: 1rem; margin-top: var(--spacing-unit); }
.social-share-links a { display: block; padding: 12px; background: var(--color-bg); border-radius: 4px; text-align: center; font-weight: bold; }

/* 8. Comments
--------------------------------------------- */
.comments-area { margin-top: var(--spacing-unit); padding-top: var(--spacing-unit); border-top: 1px solid var(--color-border); display: none; /* Hidden by default for toggle */ }
.comment-form .submit { background-color: var(--color-accent); border: none; color: var(--color-headings); padding: 12px 24px; font-weight: bold; cursor: pointer; border-radius: 4px; }

/* 9. Footer
--------------------------------------------- */
.site-footer { background-color: var(--color-surface); border-top: 1px solid var(--color-border); padding: calc(var(--spacing-unit) * 2) var(--spacing-unit); color: var(--color-text-secondary); font-size: 0.9rem; margin-top: calc(var(--spacing-unit) * 3);}
.footer-container { max-width: 1200px; margin: 0 auto; }
.footer-widgets { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: calc(var(--spacing-unit) * 2); margin-bottom: calc(var(--spacing-unit) * 2); }
.widget-title { color: var(--color-headings); margin-top: 0; font-size: 1.1rem; margin-bottom: 1rem; }
.footer-menu { list-style: none; margin: 0; padding: 0; }
.footer-menu li { margin-bottom: 0.5rem; }
.social-links { display: flex; flex-direction: column; gap: 0.5rem; }
.site-info { border-top: 1px solid var(--color-border); padding-top: var(--spacing-unit); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--spacing-unit); }