/*
Theme Name: Sound & Image
Theme URI: https://soundnimage.com
Author: Sound & Image
Author URI: https://soundnimage.com
Description: 映画批評サイト「Sound & Image」用カスタムテーマ
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: soundnimage
*/


/* ==========================================================================
   CSS Variables / Design Tokens
   ========================================================================== */
:root {
    /* Colors */
    --color-primary: #1a1a1a;
    --color-secondary: #f5f5f5;
    --color-accent: #d9c45f;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    --color-background: #fdfdfd;
    --color-background-dark: #222;

    /* Typography */
    --font-family-heading: 'Noto Serif JP', serif;
    --font-family-body: -apple-system, BlinkMacSystemFont, Roboto, "Segoe UI", "Helvetica Neue", HelveticaNeue, YuGothic, "Yu Gothic Medium", "Yu Gothic", Verdana, Meiryo, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-h1: 2.5rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.375rem;
    --line-height-base: 1.8;
    --line-height-heading: 1.4;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 5rem;

    /* Layout */
    --container-width: 1200px;
    --content-width: 800px;

    /* Header */
    --header-height: 5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Text Selection */
::selection {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

::-moz-selection {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family-body);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    background-image: url('assets/bg_p0026_l.png');
    background-image: image-set(
        url('assets/bg_p0026_l.webp') type('image/webp'),
        url('assets/bg_p0026_l.png') type('image/png')
    );
    background-repeat: repeat;
    background-position: left top;
    background-size: auto;
    background-attachment: scroll;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background overlay to make it subtle */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(253, 253, 253, 0.60);
    z-index: -1;
    pointer-events: none;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 600;
    line-height: var(--line-height-heading);
    color: var(--color-primary);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

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

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.content-wrapper {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    padding: var(--spacing-md) 0;
    border-bottom: none;
    position: sticky;
    top: 0;
    background: var(--color-background-dark);
    z-index: 100;
}

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

.site-branding {
    display: flex;
    align-items: center;
}

.site-logo {
    font-family: var(--font-family-heading);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--color-background);
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-logo__main {
    display: block;
}

.site-logo__and {
    font-size: 0.75em;
    font-weight: 600;
    letter-spacing: -0.1em;
    /* font-style: italic; */
    margin: 0 0.1em;
}

.site-logo__sub {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.9);
    font-family: var(--font-family-body);
}

.site-logo__desc {
    display: block;
    font-size: 0.625rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.8);
    font-family: var(--font-family-body);
    margin-top: 0.25rem;
}

.site-logo:hover {
    color: var(--color-accent);
}

.site-logo:hover .site-logo__sub,
.site-logo:hover .site-logo__desc {
    color: var(--color-accent);
}

.site-tagline {
    font-size: var(--font-size-small);
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.05em;
}

/* Header Social Icons */
.header-social {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: auto;
    height: auto;
    padding: 0;
    color: rgba(255, 255, 255, 0.7);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
    line-height: 1;
}

.search-toggle svg {
    display: block;
}

.search-toggle:hover {
    color: var(--color-accent);
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.social-icon:hover {
    color: var(--color-accent);
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: clamp(1.5rem, 3vw, 4rem);
}

.main-navigation ul {
    display: flex;
    gap: clamp(1.5rem, 3vw, 4rem);
    list-style: none;
}

.main-navigation a {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.7);
}

.main-navigation a:hover,
.main-navigation .current a {
    color: var(--color-background);
}

.main-navigation .search-toggle:hover {
    color: var(--color-background);
}

/* Hamburger Toggle (hidden on desktop) */
.hamburger-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 10;
}

.hamburger-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    border-radius: 1px;
}

.hamburger-toggle.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.hamburger-toggle.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}


.hero__title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 0;
    line-height: 1;
}

.hero__title .site-logo__image {
    max-width: 320px;
    margin: 0 auto;
}

.hero__tagline {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    font-family: var(--font-family-heading);
}

/* ==========================================================================
   Featured Article
   ========================================================================== */
.featured-section {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--color-border);
}

.featured-article {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.featured-article__image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.featured-article__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* filter: grayscale(100%); */
    transition: transform var(--transition-base), filter var(--transition-base);
}

.featured-article:hover .featured-article__image img {
    transform: scale(1.03);
    filter: grayscale(0%);
}

.featured-article__meta {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.featured-article__movie {
    color: var(--color-primary);
    font-weight: 500;
}

.featured-article__title {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.featured-article__title a {
    color: inherit;
}

.featured-article__title a:hover {
    color: var(--color-primary);
}

.featured-article__excerpt {
    color: var(--color-text-light);
    line-height: 1.9;
}

/* ==========================================================================
   Latest Section
   ========================================================================== */
.latest-section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    font-weight: 500;
    font-family: var(--font-family-body);
}

/* ==========================================================================
   Article Grid
   ========================================================================== */
.article-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.article-grid--archive {
    grid-template-columns: repeat(2, 1fr);
}

/* ==========================================================================
   Article Card
   ========================================================================== */
.article-card {
    display: flex;
    flex-direction: column;
}

.article-card__image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.article-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base), filter var(--transition-base);
}

.article-card:hover .article-card__image img {
    transform: scale(1.03);
    filter: grayscale(0%);
}

.article-card__meta {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.article-card__movie {
    color: var(--color-primary);
    font-weight: 500;
}

.article-card__title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
    font-weight: 600;
}

.article-card__title a {
    color: inherit;
}

.article-card__title a:hover {
    color: var(--color-primary);
}

.article-card__excerpt {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ==========================================================================
   View More Button
   ========================================================================== */
.view-more {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-fast);
}

.btn--outline {
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    background: transparent;
}

.btn--outline:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

/* ==========================================================================
   Archive Header (Search, Category, Tag)
   ========================================================================== */
.archive-header {
    text-align: center;
    padding: var(--spacing-xxl) 0;
    margin-bottom: var(--spacing-xxl);
    border-bottom: 1px solid var(--color-border);
}

.archive-title {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-sm);
}

.archive-description {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
}

/* ==========================================================================
   Page Header (Archive & About)
   ========================================================================== */
.page-header {
    text-align: center;
    padding: var(--spacing-xxl) 0;
    margin-bottom: var(--spacing-xxl);
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-sm);
}

.page-description {
    color: var(--color-text-light);
    font-size: var(--font-size-large);
}

/* ==========================================================================
   Pagination
   ========================================================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.pagination__link,
.pagination__current {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 2.5rem;
    height: 2.5rem;
    font-size: var(--font-size-small);
}

.pagination__current {
    background: var(--color-primary);
    color: var(--color-background);
}

.pagination__link:hover {
    color: var(--color-accent);
}

.pagination__dots {
    color: var(--color-text-light);
}

.pagination__next {
    margin-left: var(--spacing-sm);
}

/* ==========================================================================
   Single Article
   ========================================================================== */
.single-article__header {
    text-align: center;
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
}

.single-article__meta {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.single-article__category {
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.single-article__title {
    font-size: 2.25rem;
    line-height: 1.4;
    max-width: 800px;
    margin: 0 auto;
}

.single-article__title .title-sub {
    display: block;
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

.single-article__featured-image {
    margin-bottom: var(--spacing-xxl);
}

.single-article__featured-image img {
    width: 100%;
    max-height: 40vh;
    object-fit: contain;
}

/* Article Content */
.single-article__content {
    font-size: var(--font-size-large);
    line-height: 2;
}

.single-article__content p {
    margin-bottom: var(--spacing-lg);
}

.single-article__content .lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    font-family: var(--font-family-heading);
    font-style: italic;
    margin-bottom: var(--spacing-xl);
}

.single-article__content h2 {
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-lg);
}

.single-article__content blockquote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-md) var(--spacing-xl);
    border-left: 3px solid var(--color-text-light);
    background: var(--color-secondary);
}

.single-article__content blockquote p {
    font-family: var(--font-family-heading);
    font-style: italic;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.single-article__content blockquote cite {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    font-style: normal;
}

.article-figure {
    margin: var(--spacing-xl) 0;
}

.article-figure img {
    width: 100%;
}

.article-figure figcaption {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    text-align: center;
}

/* Article Content - Markdown Elements */
.single-article__content a:not([class]) {
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-primary);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.single-article__content a:not([class]):hover {
    color: var(--color-text-light);
    border-color: var(--color-text-light);
}

.single-article__content strong {
    font-weight: 700;
}

.single-article__content em {
    font-style: italic;
}

.single-article__content del {
    text-decoration: line-through;
    color: var(--color-text-light);
}

.single-article__content mark {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 0.1em 0.3em;
}

.single-article__content h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.single-article__content ul,
.single-article__content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
}

.single-article__content ul {
    list-style-type: disc;
}

.single-article__content ol {
    list-style-type: decimal;
}

.single-article__content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

.single-article__content code {
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 0.9em;
    background: var(--color-secondary);
    padding: 0.2em 0.4em;
    border-radius: 3px;
}

.single-article__content pre {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: var(--color-secondary);
    overflow-x: auto;
    font-size: var(--font-size-small);
    line-height: 1.6;
}

.single-article__content pre code {
    padding: 0;
    background: none;
}

.single-article__content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--spacing-xl) 0;
}

/* Link Card (OGP Preview) */
.link-card {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-md) 0;
    text-decoration: none;
    color: var(--color-text);
    transition: background-color 0.15s ease, border-color 0.15s ease;
    max-height: 120px;
}

.link-card:hover {
    background-color: var(--color-secondary);
    border-color: #ccc;
    border-bottom: 1px solid #ccc;
}

.link-card__image {
    flex-shrink: 0;
    width: 180px;
}

.link-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.link-card__body {
    flex: 1;
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.25rem;
    overflow: hidden;
    min-width: 0;
}

.link-card__domain {
    font-size: 11px;
    color: var(--color-text-light);
    text-transform: lowercase;
    letter-spacing: 0.02em;
}

.link-card__title {
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--color-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.link-card__description {
    font-size: 12px;
    color: var(--color-text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.link-card--no-image .link-card__body {
    padding: 0.875rem 1rem;
}

@media (max-width: 640px) {
    .link-card__image {
        width: 100px;
    }
}

/* Movie Info (Amazon Link) */
.movie-info {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-secondary);
    margin: var(--spacing-xl) 0;
    align-items: stretch;
}

.movie-info__link {
    flex-shrink: 0;
    border-bottom: none;
    display: block;
}

.movie-info__link:hover {
    border-bottom: none;
}

.movie-info__image {
    width: 200px;
    height: 100%;
    object-fit:contain;
    display: block;
    transition: opacity var(--transition-fast);
}

.movie-info__link:hover .movie-info__image {
    opacity: 0.8;
}

.movie-info__details {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.movie-info__title {
    margin-top: 0 !important;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.movie-info__meta {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-small);
    margin-bottom: var(--spacing-md);
}

.movie-info__meta dt {
    color: var(--color-text-light);
}

.movie-info__meta dd {
    color: var(--color-text);
}

.movie-info__amazon-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.5rem 1.2rem;
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--color-primary);
    background: transparent;
    border: 1.5px solid var(--color-primary);
    border-radius: 100px;
    text-decoration: none;
    border-bottom: 1.5px solid var(--color-primary);
    transition: background var(--transition-fast), color var(--transition-fast);
    margin-top: auto;
    width: fit-content;
}

.movie-info__amazon-link:hover {
    background: var(--color-primary);
    color: #fff;
}

/* Article Footer */
.single-article__footer {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Article Layout with TOC Sidebar (PC)
   ========================================================================== */
.single-article__layout {
    position: relative;
}

.single-article__body {
    max-width: var(--content-width);
}

.toc-sidebar {
    display: none;
}

@media (min-width: 1280px) {
    .single-article__layout {
        max-width: var(--content-width);
    }

    .toc-sidebar {
        display: block;
        position: fixed;
        right: calc((100vw - var(--content-width)) / 2 - 260px);
        top: 100px;
        width: 220px;
        z-index: 50;
        transition: opacity 0.3s ease;
        opacity: 0;
        pointer-events: none;
    }

    .toc-sidebar__title {
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.15em;
        color: var(--color-text-light);
        margin-bottom: var(--spacing-sm);
        font-family: var(--font-family-body);
        font-weight: 600;
    }

    .toc-sidebar__list {
        list-style: none;
        padding: 0;
        margin: 0;
        border-left: 2px solid var(--color-border);
    }

    .toc-sidebar__list li {
        margin: 0;
    }

    .toc-sidebar__link {
        display: block;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8125rem;
        color: var(--color-text-light);
        line-height: 1.5;
        border-left: 2px solid transparent;
        margin-left: -2px;
        transition: color var(--transition-fast), border-color var(--transition-fast);
        text-decoration: none;
        border-bottom: none;
    }

    .toc-sidebar__link:hover {
        color: var(--color-primary);
    }

    .toc-sidebar__link.is-active {
        color: var(--color-primary);
        border-left-color: var(--color-primary);
        font-weight: 500;
    }
}

/* ==========================================================================
   SNS Share Buttons
   ========================================================================== */
.sns-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    margin: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.sns-share__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-light);
    flex-shrink: 0;
}

.sns-share__buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex: 1;
}

.sns-share__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex: 1;
    padding: 0.6rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: 100px;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    text-decoration: none;
    border: 1.5px solid;
    border-bottom: 1.5px solid;
    line-height: 1;
    background: transparent;
}

.sns-share__button--x {
    color: #333;
    border-color: #ccc;
}

.sns-share__button--x:hover {
    background: #1a1a1a;
    color: #fff;
    border-color: #1a1a1a;
}

.sns-share__button--copy {
    color: #666;
    border-color: #ccc;
    cursor: pointer;
    background: transparent;
    font-family: inherit;
}

.sns-share__button--copy:hover {
    background: #666;
    color: #fff;
    border-color: #666;
}

.sns-share__button--line {
    color: #06c755;
    border-color: #06c755;
}

.sns-share__button--line:hover {
    background: #06c755;
    color: #fff;
    border-color: #06c755;
}

.sns-share__button svg {
    flex-shrink: 0;
}

.single-article__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.tag-label {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

a.tag {
    font-size: var(--font-size-small);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-secondary);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

a.tag:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

/* Post Navigation */
.post-navigation {
    padding: var(--spacing-xxl) 0;
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xxl);
}

.post-navigation .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.post-navigation__prev,
.post-navigation__next {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.post-navigation__next {
    text-align: right;
}

.post-navigation .nav-label {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.post-navigation .nav-title {
    font-family: var(--font-family-heading);
    font-size: 1.125rem;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.post-navigation a:hover .nav-title {
    color: var(--color-accent);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

.footer-nav {
    margin-bottom: var(--spacing-sm);
}

.footer-nav__link {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: var(--font-size-small);
}

.footer-nav__link:hover {
    color: var(--color-text);
}

.footer-copyright {
    margin: 0;
}

/* ==========================================================================
   Works / Media Page
   ========================================================================== */

/* Category Filter */
.works-filter {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
    justify-content: center;
}

.works-filter__button {
    padding: 0.4rem 1.2rem;
    font-size: var(--font-size-small);
    font-family: var(--font-family-body);
    font-weight: 500;
    color: var(--color-text-light);
    background: transparent;
    border: 1.5px solid var(--color-border);
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.works-filter__button:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.works-filter__button.is-active {
    color: #fff;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

/* Year Sections */
.works-year {
    margin-bottom: var(--spacing-xxl);
}

.works-year:last-child {
    margin-bottom: 0;
}

.works-year__heading {
    font-size: 1.25rem;
    font-family: var(--font-family-heading);
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    padding: 0.6rem 0;
    border-bottom: 2px solid var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

/* Works Item */
.works-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.works-item:last-child {
    border-bottom: none;
}

.works-item__date {
    flex-shrink: 0;
    width: 100px;
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    padding-top: 0.15rem;
}

.works-item__body {
    flex: 1;
    min-width: 0;
}

.works-item__category {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 0.15rem 0.6rem;
    border-radius: 3px;
    margin-bottom: 0.4rem;
}

.works-item__category--radio {
    color: #2563eb;
    background: #eff6ff;
}

.works-item__category--contribution {
    color: #059669;
    background: #ecfdf5;
}

.works-item__category--interview {
    color: #d97706;
    background: #fffbeb;
}

.works-item__category--event {
    color: #7c3aed;
    background: #f5f3ff;
}

.works-item__publication {
    font-size: var(--font-size-small);
    color: var(--color-primary);
    font-weight: 500;
}

.works-item__title {
    font-size: 1rem;
    font-family: var(--font-family-body);
    font-weight: 600;
    margin-bottom: 0.3rem;
    line-height: 1.5;
}

.works-item__title a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.works-item__title a:hover {
    color: var(--color-accent);
}

.works-item__description {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    line-height: 1.7;
    margin: 0;
}

/* Works Item Image */
.works-item__image {
    flex-shrink: 0;
    width: 200px;
    align-self: center;
}

.works-item__image a {
    display: block;
    border-bottom: none;
}

.works-item__image img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
    transition: opacity var(--transition-fast);
}

.works-item__image a:hover img {
    opacity: 0.8;
}

/* Works Detail (single page) */
.works-detail {
    padding: var(--spacing-lg);
    background: var(--color-secondary);
    margin-bottom: var(--spacing-xxl);
}

.works-detail__meta {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xs) var(--spacing-lg);
    font-size: var(--font-size-small);
    margin-bottom: var(--spacing-md);
}

.works-detail__meta dt {
    color: var(--color-text-light);
    font-weight: 500;
}

.works-detail__meta dd {
    color: var(--color-text);
}

.works-detail__external-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.2rem;
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--color-primary);
    background: transparent;
    border: 1.5px solid var(--color-primary);
    border-radius: 100px;
    text-decoration: none;
    border-bottom: 1.5px solid var(--color-primary);
    transition: background var(--transition-fast), color var(--transition-fast);
    margin-top: var(--spacing-xs);
}

.works-detail__external-link:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ==========================================================================
   About Page
   ========================================================================== */
.about-header {
    text-align: center;
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--color-border);
}

.about-title {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-lg);
}

.about-lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    font-family: var(--font-family-heading);
    line-height: 2;
}

.about-content {
    padding: 0 0 var(--spacing-xxl);
}

.about-content h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    margin-top: var(--spacing-xxl);
}

.about-content h2:first-child {
    margin-top: 0;
}

.about-content p {
    margin-bottom: var(--spacing-md);
    line-height: 2;
}

.about-content p:last-child {
    margin-bottom: 0;
}

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

.about-section:last-child {
    margin-bottom: 0;
}

.about-section h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.about-section p {
    margin-bottom: var(--spacing-md);
    line-height: 2;
}

.about-section p:last-child {
    margin-bottom: 0;
}

/* Perspective Grid */
.perspective-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.perspective-item {
    padding: var(--spacing-lg);
    background: var(--color-secondary);
}

.perspective-item h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-family-body);
    font-weight: 600;
}

.perspective-item p {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-bottom: 0;
    line-height: 1.8;
}

/* Author Profile */
.author-profile {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.author-image {
    aspect-ratio: 1;
    overflow: hidden;
}

.author-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-base);
}

.author-image:hover img {
    filter: grayscale(0%);
}

.author-name {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.author-bio {
    color: var(--color-text);
    line-height: 2;
}

.author-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

.social-link:hover {
    color: var(--color-accent);
}

/* Contact */
.contact-email {
    margin-top: var(--spacing-md);
}

.contact-email a {
    font-size: 1.125rem;
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-primary);
    padding-bottom: 2px;
}

.contact-email a:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .featured-article {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    /* Typography - Mobile */
    :root {
        --font-size-base: 15px;
        --font-size-small: 13px;
        --font-size-large: 16px;
        --font-size-h1: 1.75rem;
        --font-size-h2: 1.375rem;
        --font-size-h3: 1.125rem;
        --spacing-xxl: 2.5rem;
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
        --header-height: 3.5rem;
    }

    /* Header */
    .site-header {
        padding: var(--spacing-sm) 0;
    }

    .site-header .container {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0;
        justify-content: space-between;
        align-items: center;
    }

    .hamburger-toggle {
        display: flex;
        order: 3;
        margin-left: 0;
    }

    .site-branding {
        order: 1;
        width: auto;
        display: flex;
        justify-content: flex-start;
    }

    .site-logo {
        font-size: 1.5rem;
        text-align: left;
        align-items: flex-start;
    }

    .site-logo__sub {
        font-size: 0.625rem;
        letter-spacing: 0.08em;
    }

    .site-logo__desc {
        font-size: 0.5625rem;
    }

    .main-navigation {
        order: 3;
        width: 100%;
        display: none;
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
        padding-top: var(--spacing-sm);
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        margin-top: var(--spacing-sm);
    }

    .main-navigation.is-open {
        display: flex;
    }

    .main-navigation ul {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .main-navigation a {
        font-size: 14px;
    }

    .main-navigation .search-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .main-navigation .search-toggle svg {
        width: 16px;
        height: 16px;
    }

    .header-social {
        order: 2;
        display: flex;
        gap: 0.5rem;
        align-items: center;
        margin-left: auto;
    }

    .header-social .social-icon {
        width: 32px;
        height: 32px;
    }

    .header-social svg {
        width: 18px;
        height: 18px;
    }

    /* Hero */
    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero__title .site-logo__image {
        max-width: 220px;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__tagline {
        font-size: 0.9375rem;
    }

    /* Featured Article */
    .featured-article__image {
        margin-bottom: 0.75rem;
    }

    .featured-article__meta {
        margin-bottom: 0.375rem;
    }

    .featured-article__title {
        font-size: 1.25rem;
        margin-bottom: 0.5rem;
    }

    .featured-article__excerpt {
        font-size: var(--font-size-small);
        line-height: 1.8;
    }

    /* Article Grid & Cards */
    .article-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .article-card__image {
        margin-bottom: 0.75rem;
    }

    .article-card__meta {
        font-size: 12px;
        margin-bottom: 0.375rem;
    }

    .article-card__title {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .article-card__excerpt {
        font-size: 13px;
    }

    /* Page Header */
    .page-title {
        font-size: var(--font-size-h1);
    }

    .page-description {
        font-size: 1rem;
    }

    /* Works / Media */
    .works-filter {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 0.4rem;
    }

    .works-filter__button {
        font-size: 12px;
        padding: 0.3rem 0.4rem;
        text-align: center;
        white-space: nowrap;
    }

    .works-item {
        flex-direction: column;
        gap: 0;
    }

    .works-item__date {
        width: auto;
        margin-bottom: 0.25rem;
        font-size: 12px;
    }

    .works-item__title {
        font-size: 0.9375rem;
    }

    .works-item__description {
        font-size: 12px;
    }

    .works-item__image {
        width: 100%;
        max-width: 300px;
        margin-top: var(--spacing-sm);
    }

    .works-item__image img {
        width: 100%;
        aspect-ratio: 3 / 2;
    }

    /* Single Article */
    .single-article__title {
        font-size: 1.5rem;
    }

    .single-article__title .title-sub {
        font-size: 1rem;
    }

    .single-article__meta {
        font-size: 12px;
    }

    .single-article__content {
        font-size: 0.9375rem;
        line-height: 1.9;
    }

    .single-article__content .lead {
        font-size: 1.0625rem;
    }

    .single-article__content h2 {
        font-size: 1.25rem;
    }

    .single-article__content h3 {
        font-size: 1.0625rem;
    }

    .single-article__content blockquote p {
        font-size: 1rem;
    }

    /* Movie Info */
    .movie-info {
        flex-direction: column;
        padding: var(--spacing-md);
    }

    /* SNS Share */
    .sns-share {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .sns-share__buttons {
        flex-direction: row;
    }

    .sns-share__button {
        font-size: 0.75rem;
        padding: 0.4rem 0.5rem;
    }

    .movie-info__image {
        width: 100%;
        max-width: 150px;
        margin: 0 auto;
    }

    .movie-info__title {
        font-size: 1rem;
        text-align: center;
    }

    .movie-info__meta {
        font-size: 12px;
    }

    /* Post Navigation */
    .post-navigation .container {
        grid-template-columns: 1fr;
    }

    .post-navigation__next {
        text-align: left;
    }

    .post-navigation .nav-title {
        font-size: 1rem;
    }

    /* About Page */
    .about-title {
        font-size: var(--font-size-h1);
    }

    .about-lead {
        font-size: 1rem;
    }

    .about-section h2 {
        font-size: 1.125rem;
    }

    .about-section p {
        font-size: 0.9375rem;
    }

    .perspective-grid {
        grid-template-columns: 1fr;
    }

    .perspective-item h3 {
        font-size: 0.9375rem;
    }

    .perspective-item p {
        font-size: 13px;
    }

    .author-profile {
        grid-template-columns: 1fr;
    }

    .author-image {
        max-width: 200px;
    }

    .author-name {
        font-size: 1.125rem;
    }

    .author-bio {
        font-size: 0.9375rem;
    }

    /* Footer */
    .site-footer {
        font-size: 12px;
    }

    /* Pagination */
    .pagination {
        flex-wrap: wrap;
    }

    .pagination__link,
    .pagination__current {
        min-width: 2rem;
        height: 2rem;
        font-size: 12px;
    }
}

/* ==========================================================================
   404 Error Page
   ========================================================================== */

.error-404__content {
    text-align: center;
    padding: 4rem 0;
}

.error-404__action {
    margin-top: 2rem;
}

/* ==========================================================================
   Skip Link (Accessibility)
   ========================================================================== */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--spacing-md);
    z-index: 9999;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: #fff;
    font-size: var(--font-size-small);
    font-weight: 700;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
    color: #fff;
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   Focus Styles (Accessibility – WCAG 2.4.7)
   ========================================================================== */

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

a:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

button:focus-visible,
.btn:focus-visible,
.works-filter__button:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.site-header a:focus-visible,
.site-header button:focus-visible {
    outline-color: var(--color-accent);
}

/* ==========================================================================
   Reduced Motion (Accessibility – WCAG 2.3.3)
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==========================================================================
   Performance: content-visibility & will-change
   ========================================================================== */

.article-grid {
    content-visibility: auto;
    contain-intrinsic-size: auto 600px;
}

.site-footer {
    content-visibility: auto;
    contain-intrinsic-size: auto 80px;
}


/* ==========================================================================
   Search Panel (dropdown from header)
   ========================================================================== */

.search-panel {
    display: none;
    background: var(--color-primary);
    overflow: hidden;
}

.search-panel.is-open {
    display: block;
}

.search-panel__inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 24px 40px;
}

/* ---- Search Form ---- */

.search-form__field {
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 8px;
    transition: border-color 0.25s ease;
}

.search-form__field:focus-within {
    border-color: var(--color-accent);
}

.search-form__icon {
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.35);
}

.search-form__input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    letter-spacing: 0.03em;
    padding: 6px 0;
    -webkit-appearance: none;
    appearance: none;
}

.search-form__input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.search-form__input::-webkit-search-cancel-button {
    -webkit-appearance: none;
}

/* ---- Category Navigation ---- */

.search-panel__cats {
    margin-top: 32px;
}

.search-panel__cat-group {
    margin-bottom: 24px;
}

.search-panel__cat-group:last-child {
    margin-bottom: 0;
}

.search-panel__cat-heading {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.35);
    margin: 0 0 12px;
}

.search-panel__cat-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.search-panel__cat-list li a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 100px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.search-panel__cat-list li a:hover {
    color: #fff;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.05);
}

.search-panel__cat-count {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.3);
}

/* ---- Tag Navigation ---- */

.search-panel__tags {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.search-panel__tag-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.search-panel__tag {
    display: inline-block;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.45);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.search-panel__tag:hover {
    color: #fff;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Language Switcher
   ========================================================================== */

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 12px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.lang-switcher__item {
    padding: 3px 8px;
    border-radius: 3px;
    text-decoration: none;
    color: var(--color-text-light);
    transition: color 0.2s, background-color 0.2s;
}

.lang-switcher__item:hover {
    color: var(--color-primary);
    background-color: rgba(0, 0, 0, 0.05);
}

.lang-switcher__item--current {
    color: var(--color-background);
    background-color: var(--color-primary);
    font-weight: 700;
}

@media (max-width: 768px) {
    .lang-switcher {
        margin-left: 0;
        margin-top: 0;
    }

    .main-navigation .lang-switcher__item {
        padding-top: 0;
        padding-bottom: 0;
    }
}