/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@700&family=Noto+Sans+JP:wght@400;700&display=swap');

/* --- CSS Variables (Theme: PixelBloom) --- */
:root {
    --bg-color: #1a1a1a;
    --surface-color: #2c2c2c;
    --text-color: #e0e0e0;
    --heading-color: #ffffff;
    --accent-color-1: #ff00ff; /* Neon Pink */
    --accent-color-2: #00ffff; /* Neon Blue */
    --accent-color-3: #00ff00; /* Neon Green */
    --border-color: #444444;
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-display: 'JetBrains Mono', monospace;
    --shadow-glow: 0 0 8px var(--accent-color-2, #00ffff);
}

/* --- General Reset & Body Styling --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    color: var(--heading-color);
    margin-bottom: 0.8em;
    line-height: 1.3;
}

h1 { font-size: 2.8rem; color: var(--accent-color-1); }
h2 { font-size: 2rem; color: var(--accent-color-2); }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1.2em;
}

a {
    color: var(--accent-color-2);
    text-decoration: none;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

a:hover {
    color: var(--accent-color-1);
    text-shadow: 0 0 5px var(--accent-color-1);
}

ul, ol {
    margin-left: 20px;
    margin-bottom: 1.2em;
}

li {
    margin-bottom: 0.5em;
}

/* --- Header & Navigation --- */
.site-header {
    background-color: var(--surface-color);
    border-bottom: 2px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 30px;
}

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

.site-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
}

.site-title a {
    color: var(--heading-color);
    text-shadow: 0 0 8px var(--accent-color-1);
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 25px;
}

.main-nav a {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    padding: 5px 10px;
}

/* --- Main Layout --- */
.main-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .main-layout {
        grid-template-columns: 3fr 1fr;
    }
}

.main-content {
    background-color: var(--surface-color);
    padding: 30px;
    border: 1px solid var(--border-color);
}

/* --- Article & Page Styling --- */
.page-header h1, .article-header h1 {
    margin-bottom: 20px;
}

.article-meta {
    font-size: 0.9em;
    color: #aaa;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.article-content a {
    font-weight: bold;
    border-bottom: 1px dotted var(--accent-color-2);
}
.article-content a:hover {
    border-bottom-style: solid;
}

.article-content img {
    max-width: 100%;
    height: auto;
    margin: 20px 0;
}

/* --- Blog Articles Section (Homepage) --- */
.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 600px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 900px) {
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.article-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 15px var(--accent-color-1);
}

.article-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.article-card p {
    flex-grow: 1;
    font-size: 0.95em;
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    font-family: var(--font-display);
    font-weight: 700;
    background-color: var(--accent-color-1);
    color: var(--bg-color);
    padding: 8px 15px;
    text-align: center;
    transition: background-color 0.3s ease;
}

.read-more:hover {
    background-color: var(--accent-color-2);
    text-shadow: none;
}

/* --- Sidebar --- */
.sidebar {
    padding-top: 30px;
}

.widget {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-bottom: 30px;
}

.widget-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-color-1);
    color: var(--accent-color-1);
}

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

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

.widget li a::before {
    content: '>> ';
    color: var(--accent-color-2);
    font-weight: bold;
}

/* --- Call to Action (CTA) --- */
.cta-section {
    background-color: var(--surface-color);
    border: 2px solid var(--accent-color-2);
    padding: 30px;
    margin: 40px 0;
    text-align: center;
    box-shadow: var(--shadow-glow);
}

.cta-section h3 {
    color: var(--accent-color-2);
}

/* --- Footer --- */
.site-footer {
    background-color: var(--surface-color);
    border-top: 2px solid var(--border-color);
    color: #aaa;
    padding: 40px 0;
    margin-top: 40px;
    text-align: center;
    font-size: 0.9em;
}

.footer-links {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 0 0 15px;
    padding: 0;
}

/* --- Responsive Adjustments --- */
@media (max-width: 767px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }

    .site-header .container {
        flex-direction: column;
        gap: 20px;
    }

    .main-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        padding-top: 0;
    }
}