/* =========================================
   hubpage - style.css
   Base: Mono Template
   ========================================= */

/* =========================================
   Design System - Variables
   ========================================= */
:root {
    /* Colors */
    --bg-color: #111111;
    --text-main: #ffffff;
    --text-sub: #888888;
    --text-muted: #555555;
    --accent-color: #333333;
    --hover-color: #1a1a1a;

    /* Typography */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.25rem;
    --font-xl: 1.5rem;
    --font-2xl: 2rem;
    --font-3xl: 2.5rem;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

/* =========================================
   Reset & Base
   ========================================= */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--text-sub);
}

a.site-link {
    text-decoration: underline;
}

/* =========================================
   Layout
   ========================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Desktop Layout */
@media (min-width: 1024px) {
    .layout-wrapper {
        display: flex;
        min-height: 100vh;
    }

    .sidebar {
        width: 35%;
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        padding: var(--spacing-2xl);
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        border-right: 1px solid var(--accent-color);
        z-index: 10;
        opacity: 0;
    }

    .main-content {
        margin-left: 35%;
        width: 65%;
        padding: var(--spacing-2xl);
    }
}

/* Tablet & Mobile Layout */
@media (max-width: 1023px) {
    .layout-wrapper {
        display: block;
    }

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        padding: var(--spacing-xl) var(--spacing-md);
        border-bottom: 1px solid var(--accent-color);
        opacity: 0;
    }

    .main-content {
        width: 100%;
        margin: 0;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .sidebar-footer {
        margin-top: var(--spacing-xl);
    }
}

/* =========================================
   Typography
   ========================================= */
.site-title {
    font-size: var(--font-3xl);
    font-weight: 700;
    letter-spacing: -0.05em;
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.1;
}

.site-role {
    font-size: var(--font-sm);
    color: var(--text-sub);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.site-bio {
    font-size: var(--font-base);
    color: #cccccc;
    max-width: 400px;
    line-height: 1.8;
}

/* =========================================
   Navigation
   ========================================= */
.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    margin-bottom: var(--spacing-xs);
}

.nav-item a {
    font-size: var(--font-sm);
    color: var(--text-sub);
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.nav-item a:hover {
    color: var(--text-main);
    padding-left: 5px;
}

.nav-divider {
    height: 1px;
    background: var(--accent-color);
    margin: var(--spacing-md) 0;
}

/* =========================================
   Service Cards (Work Items)
   ========================================= */
.work-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.work-item {
    margin-bottom: var(--spacing-2xl);
    opacity: 0;
    transform: translateY(30px);
    cursor: pointer;
    outline: none;
    display: block;
}

.work-item:focus .work-img {
    filter: brightness(1.2);
    transform: scale(1.02);
}

.work-image-container {
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    background-color: #222;
    position: relative;
}

@media (max-width: 768px) {
    .work-image-container {
        height: 250px;
    }
}

.work-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.7s cubic-bezier(0.2, 1, 0.3, 1), filter 0.5s ease;
    filter: brightness(0.9);
}

.work-item:hover .work-img {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.work-info {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px solid var(--accent-color);
    padding-bottom: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.work-title {
    font-size: var(--font-lg);
    font-weight: 500;
}

.work-cat {
    font-size: var(--font-sm);
    color: var(--text-sub);
}

/* External link indicator */
.work-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--text-main);
    transition: width 0.3s ease;
}

.work-item:hover::after {
    width: 100%;
}

/* =========================================
   Footer
   ========================================= */
.copyright {
    font-size: var(--font-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-lg);
}

/* =========================================
   About Page Specific
   ========================================= */
.about-content {
    max-width: 800px;
}

.about-section {
    margin-bottom: var(--spacing-2xl);
}

.about-section h2 {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--accent-color);
}

.about-section p {
    color: #cccccc;
    margin-bottom: var(--spacing-sm);
}

.about-section ul {
    list-style: none;
    padding: 0;
}

.about-section li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--accent-color);
    color: #cccccc;
}

.about-section li:last-child {
    border-bottom: none;
}

/* Activity cards */
.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.activity-card {
    background: var(--hover-color);
    padding: var(--spacing-md);
    border: 1px solid var(--accent-color);
}

.activity-card h3 {
    font-size: var(--font-lg);
    margin: 0 0 var(--spacing-xs) 0;
}

.activity-card p {
    font-size: var(--font-sm);
    color: var(--text-sub);
    margin: 0;
}

/* =========================================
   Privacy Page Specific
   ========================================= */
.privacy-content {
    max-width: 800px;
}

.privacy-content h1 {
    font-size: var(--font-2xl);
    margin-bottom: var(--spacing-xl);
}

.privacy-content h2 {
    font-size: var(--font-lg);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.privacy-content p {
    color: #cccccc;
    margin-bottom: var(--spacing-sm);
}

.privacy-content ul {
    color: #cccccc;
    padding-left: var(--spacing-md);
}

.privacy-content li {
    margin-bottom: var(--spacing-xs);
}

.last-updated {
    font-size: var(--font-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-2xl);
}

/* =========================================
   Utility Classes
   ========================================= */
.text-muted {
    color: var(--text-muted);
}

.text-sub {
    color: var(--text-sub);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* =========================================
   News Section
   ========================================= */
.news-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--accent-color);
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.news-title {
    font-size: var(--font-sm);
    color: var(--text-sub);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0;
}

.news-more {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

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

.news-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-sm);
    color: var(--text-sub);
}

.news-date {
    color: #888888;
    font-size: var(--font-xs);
    white-space: nowrap;
    min-width: 80px;
}

.news-text {
    color: #e5e5e5;
}

.news-tag {
    font-size: var(--font-xs);
    color: var(--text-muted);
    background: var(--hover-color);
    padding: 0.1rem 0.4rem;
    border-radius: 2px;
    margin-left: 0.5rem;
}

/* Article Links */
.news-item .article-link {
    display: flex;
    gap: var(--spacing-md);
    width: 100%;
    transition: all 0.3s ease;
}

.news-item .article-link .news-date {
    min-width: 80px;
}

.article-link:hover {
    color: var(--text-main);
}

.article-link:hover .news-text {
    color: var(--text-main);
}

.article-link:hover .news-date {
    color: var(--text-sub);
}

/* =========================================
   Article Page Specific
   ========================================= */

/* Article pages - dark navy background for better readability */
.main-content:has(.article-content) {
    background-color: #0f1419;
}

.article-content {
    max-width: 800px;
}

.article-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid #2a3038;
}

.article-date {
    font-size: var(--font-sm);
    color: var(--text-muted);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.article-title {
    font-size: var(--font-2xl);
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
}

.article-body {
    color: #e5e5e5;
    line-height: 2;
}

.article-body h2 {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid #2a3038;
    color: var(--text-main);
}

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

.article-body ul {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.article-body li {
    margin-bottom: var(--spacing-xs);
}

.article-body strong {
    color: var(--text-main);
}

.article-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--spacing-md) 0;
    border-radius: 4px;
}

.article-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid #2a3038;
}

.back-link {
    font-size: var(--font-sm);
    color: var(--text-sub);
    transition: color 0.3s ease;
}

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

/* =========================================
   Services Page Specific
   ========================================= */
.services-content {
    max-width: 900px;
}

.service-detail {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--accent-color);
}

.service-detail:last-child {
    border-bottom: none;
}

.service-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-sm);
}

.service-detail h2 {
    font-size: var(--font-xl);
    font-weight: 600;
    margin: 0;
}

.service-category {
    font-size: var(--font-sm);
    color: var(--text-sub);
}

.service-description {
    color: #cccccc;
    margin-bottom: var(--spacing-md);
    line-height: 1.9;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md) 0;
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-sub);
    font-size: var(--font-sm);
}

.service-features li::before {
    content: "→ ";
    color: var(--text-muted);
}

.service-link {
    display: inline-block;
    font-size: var(--font-sm);
    color: var(--text-main);
    border: 1px solid var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-md);
    transition: all 0.3s ease;
}

.service-link:hover {
    background: var(--text-main);
    color: var(--bg-color);
}