/*
Theme Name: LIG Blog Theme
Theme URI: https://liginc.co.jp/blog
Author: Manus
Description: A WordPress theme inspired by LIG blog design
Version: 1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lig-blog-theme
Tags: blog, custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* Reset CSS */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
    display: block;
}

body {
    line-height: 1;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: #333;
    background-color: #f8f8f8;
}

ol, ul {
    list-style: none;
}

blockquote, q {
    quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* Base Styles */
a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #666;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
}

h1 {
    font-size: 28px;
}

h2 {
    font-size: 24px;
}

h3 {
    font-size: 20px;
}

h4 {
    font-size: 18px;
}

p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* Header */
.site-header {
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.site-logo {
    max-width: 150px;
}

.site-navigation ul {
    display: flex;
}

.site-navigation li {
    margin-left: 20px;
}

.site-navigation a {
    font-weight: 500;
}

/* Search Form */
.search-form {
    position: relative;
    max-width: 300px;
}

.search-form input[type="search"] {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 30px;
    font-size: 14px;
}

.search-form button {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
}

/* Section Headers */
.section-header {
    margin-bottom: 30px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    display: inline-block;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
    margin-left: 10px;
}

/* Article Cards */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.article-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.article-thumbnail {
    position: relative;
    overflow: hidden;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.article-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content {
    padding: 20px;
}

.article-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    align-items: center;
    margin-top: 15px;
    font-size: 14px;
    color: #666;
}

.article-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-right: 10px;
}

.article-date {
    margin-left: auto;
}

/* Category Labels */
.category-label {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    margin-right: 5px;
    margin-bottom: 5px;
}

.category-web {
    background-color: #3498db;
}

.category-design {
    background-color: #9b59b6;
}

.category-tech {
    background-color: #2ecc71;
}

.category-ai {
    background-color: #8e44ad;
}

.category-seo {
    background-color: #27ae60;
}

.category-app {
    background-color: #e74c3c;
}

.category-system {
    background-color: #f39c12;
}

.category-media {
    background-color: #16a085;
}

.category-pr {
    background-color: #c0392b;
}

/* Sidebar */
.sidebar {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.sidebar-widget {
    margin-bottom: 30px;
}

.sidebar-widget-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.sidebar-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.sidebar-category-link {
    display: block;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    color: #fff;
    transition: opacity 0.3s ease;
}

.sidebar-category-link:hover {
    opacity: 0.9;
    color: #fff;
}

/* Footer */
.site-footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-widget-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #fff;
}

.footer-widget ul li {
    margin-bottom: 10px;
}

.footer-widget a {
    color: #ccc;
}

.footer-widget a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: #999;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .site-navigation {
        margin-top: 15px;
        width: 100%;
    }
    
    .site-navigation ul {
        flex-direction: column;
    }
    
    .site-navigation li {
        margin-left: 0;
        margin-bottom: 10px;
    }
    
    .article-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        margin-top: 30px;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 24px;
    }
    
    h2 {
        font-size: 20px;
    }
    
    h3 {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .article-title {
        font-size: 16px;
    }
}