/*
Theme Name: My SEO Theme
Theme URI: https://example.com/my-seo-theme/
Author: Your Name
Author URI: https://example.com/
Description: A complete, SEO-friendly WordPress theme with a modern, fast-loading design, semantic structure, and extensive dashboard controls.
Version: 1.1.0
Requires at least: 5.0
Tested up to: 6.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: my-seo-theme
*/

/* --- 1. CSS Custom Properties (Variables) --- */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --text-color: #343a40;
    --text-color-light: #666;
    --bg-color: #f8f9fa;
    --card-bg-color: #fff;
    --border-color: #dee2e6;
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.08);
}

/* --- 2. Base Styles & Reset --- */
html {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family-base);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: #0056b3;
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Screen reader text for accessibility */
.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;
}

/* --- 3. Layout: Header, Main, Footer --- */
.site-header {
    background-color: var(--card-bg-color);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--box-shadow);
}

.site-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-main {
    background-color: var(--card-bg-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--box-shadow);
}

.site-footer {
    background-color: var(--text-color);
    color: #fff;
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: var(--spacing-lg);
}

.site-footer a {
    color: #fff;
}

.site-footer a:hover {
    text-decoration: underline;
}

/* --- 4. Main Navigation --- */
.site-branding {
    flex-shrink: 0;
}

.site-title {
    margin: 0;
    font-size: 1.8rem;
}

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

.site-navigation {
    flex-grow: 1;
    text-align: right;
}

.site-navigation ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: inline-flex;
    align-items: center;
}

.site-navigation li a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease-in-out;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    position: relative;
    z-index: 100;
}

.mobile-menu-toggle .icon-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
}

/* --- 5. Content & Post Grid --- */
.site-content {
    padding: var(--spacing-lg) 0;
}

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

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.grid-item {
    background-color: var(--card-bg-color);
    border-radius: var(--radius-md);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
}

.grid-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.grid-item-content {
    padding: var(--spacing-md);
}

.grid-item h2 a {
    color: var(--text-color);
    text-decoration: none;
}

/* --- 6. Single Post & Pages --- */
.entry-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.entry-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.entry-meta {
    color: var(--text-color-light);
    font-size: 0.9rem;
}

.entry-content {
    font-size: 1.1rem;
    line-height: 1.8;
}

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

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

.tags-links {
    margin-top: var(--spacing-lg);
}

.tags-links a {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin: 0 var(--spacing-xs) var(--spacing-xs) 0;
    display: inline-block;
    color: var(--secondary-color);
}

.tags-links a:hover {
    background-color: var(--primary-color);
    color: #fff;
    text-decoration: none;
}

/* --- 7. Widgets & Sidebar --- */
.widget-area {
    padding-left: var(--spacing-lg);
}

.widget {
    background-color: var(--card-bg-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    font-size: 1.2rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

/* --- 8. Advertisements --- */
.ad-container {
    text-align: center;
    margin: var(--spacing-lg) auto;
    background-color: var(--card-bg-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.ad-container img,
.ad-container iframe,
.ad-container ins {
    max-width: 100% !important;
    height: auto !important;
    display: block;
    margin: 0 auto;
}

.ad-sticky-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--card-bg-color);
    box-shadow: 0 -4px 6px rgba(0,0,0,0.1);
    z-index: 999;
    padding: var(--spacing-sm) 0;
    border-radius: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Ad After Header Specific */
.ad-after-header {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

/* Ad Inside Single Content (after 3rd paragraph) */
.ad-in-content {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

/* Ad After Single Post Header */
.ad-single-after-header {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}


/* --- 9. Pagination --- */
.pagination {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.page-numbers {
    padding: var(--spacing-xs) var(--spacing-sm);
    text-decoration: none;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    margin: 0 var(--spacing-xs);
    transition: background-color 0.2s, color 0.2s;
    border-radius: var(--radius-sm);
}

.page-numbers:hover {
    background-color: var(--primary-color);
    color: #fff;
    text-decoration: none;
}

.page-numbers.current {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* --- 10. Helper Classes --- */
.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;
}

/* --- 11. Media Queries for Responsiveness --- */
@media (max-width: 768px) {
    .site-header-inner {
        flex-wrap: wrap;
    }

    .site-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--card-bg-color);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 99;
        text-align: left;
    }

    .site-navigation.is-open {
        display: block;
    }

    .site-navigation ul {
        flex-direction: column;
        display: block;
    }

    .site-navigation li a {
        padding: var(--spacing-sm);
        border-bottom: 1px solid var(--border-color);
    }

    .mobile-menu-toggle {
        display: block;
    }

    .site-main {
        padding: var(--spacing-md);
    }

    .entry-title {
        font-size: 2rem;
    }
    
    .ad-sticky-footer {
        display: none;
    }
}