/*
Theme Name: Undefined
Theme URI: https://example.com
Author: Your Name
Author URI: https://example.com
Description: A minimal, editorial-style theme for fashion and language blogging.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: undefined
Tags: minimal, blog, editorial, monochrome
*/

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

:root {
  --color-black: #111111;
  --color-white: #ffffff;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e8e8e8;
  --color-gray-400: #999999;
  --color-gray-600: #555555;

  --font-serif: 'Bodoni Moda', 'Shippori Mincho', 'Georgia', serif;
  --font-sans: 'Jost', 'Helvetica Neue', Arial, sans-serif;
  --font-jp: 'Shippori Mincho', 'Georgia', serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  --max-width: 1200px;
  --content-width: 720px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-jp);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: 0.03em;
}

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

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  opacity: 0.6;
}

/* ===================================
   TYPOGRAPHY
=================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 300;
  line-height: 1.25;
  letter-spacing: 0.04em;
}

p {
  margin-bottom: 1.5rem;
}

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

.container--narrow {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===================================
   HEADER
=================================== */
.site-header {
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  background: var(--color-white);
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.site-logo {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ===================================
   NAVIGATION
=================================== */
.site-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.site-nav a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-600);
  transition: color 0.2s;
}

.site-nav a:hover {
  color: var(--color-black);
  opacity: 1;
}

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-black);
  margin: 5px 0;
  transition: all 0.3s;
}

/* ===================================
   HERO / FEATURED
=================================== */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  border-bottom: 1px solid var(--color-gray-200);
}

.hero__label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-sm);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.03em;
  max-width: 820px;
  margin: 0 auto var(--spacing-sm);
  font-style: italic;
}

.hero__excerpt {
  font-family: var(--font-jp);
  font-size: 0.9rem;
  color: var(--color-gray-600);
  max-width: 560px;
  margin: 0 auto var(--spacing-sm);
  line-height: 1.9;
  letter-spacing: 0.04em;
}

.hero__meta {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 300;
  color: var(--color-gray-400);
  letter-spacing: 0.12em;
}

/* ===================================
   POST LIST (縦並び)
=================================== */
.posts-list {
  display: flex;
  flex-direction: column;
}

.post-list-item {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.post-list-item:first-child {
  border-top: 1px solid var(--color-gray-200);
}

.post-list-item__title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.35;
  letter-spacing: 0.02em;
  margin: 0.3rem 0 0.5rem;
}

.post-list-item__title a:hover {
  opacity: 0.5;
}

/* ===================================
   POST GRID (HOME)
=================================== */
.posts-section {
  padding: var(--spacing-lg) 0;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.post-card {
  border: none;
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-gray-200);
  transition: background 0.2s;
}

.post-card:hover {
  background: var(--color-gray-100);
}

.post-card__category {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: 0.3rem;
}

.post-card__title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.5;
  margin-bottom: var(--spacing-xs);
}

.post-card__excerpt {
  font-family: var(--font-jp);
  font-size: 0.82rem;
  color: var(--color-gray-600);
  line-height: 1.85;
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__meta {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 300;
  color: var(--color-gray-400);
  letter-spacing: 0.1em;
}

/* ===================================
   SINGLE POST
=================================== */
.post-header {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-bottom: 1px solid var(--color-gray-200);
  text-align: center;
}

.post-header__category {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-sm);
}

.post-header__title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.25;
  max-width: 750px;
  margin: 0 auto var(--spacing-sm);
}

.post-header__meta {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--color-gray-400);
  letter-spacing: 0.08em;
}

/* Post body content */
.post-content {
  padding: var(--spacing-lg) 0;
}

.post-content p {
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 2rem;
}

.post-content h2 {
  font-size: 1.3rem;
  margin: 3rem 0 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.post-content h3 {
  font-size: 1.1rem;
  margin: 2rem 0 0.75rem;
  font-weight: 400;
}

.post-content blockquote {
  border-left: 2px solid var(--color-black);
  padding-left: var(--spacing-md);
  margin: 2.5rem 0;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-gray-600);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: 3rem 0;
}

/* ===================================
   POST GRID LARGE (2-column top row)
=================================== */
.posts-grid--large {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-bottom: 2px;
}

.post-card--large {
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--color-gray-100);
}

.post-card__title--large {
  font-size: 1.4rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
}

.hero__excerpt {
  font-size: 0.95rem;
  color: var(--color-gray-600);
  max-width: 600px;
  margin: 0 auto var(--spacing-sm);
  line-height: 1.8;
}

/* ===================================
   SECTION HEADER
=================================== */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-black);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.section-header__title {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

.section-header__link {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--color-gray-400);
}

/* ===================================
   SIDEBAR
=================================== */
.sidebar-widget {
  margin-bottom: var(--spacing-lg);
}

.sidebar-widget__title {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-black);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.sidebar-widget ul {
  list-style: none;
}

.sidebar-widget li {
  font-size: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-gray-200);
}

/* ===================================
   FOOTER
=================================== */
.site-footer {
  border-top: 1px solid var(--color-gray-200);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer-col__title {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  font-size: 0.8rem;
  color: var(--color-gray-600);
  margin-bottom: 0.4rem;
}

.site-footer__bottom {
  max-width: var(--max-width);
  margin: var(--spacing-md) auto 0;
  padding: var(--spacing-sm) var(--spacing-md) 0;
  border-top: 1px solid var(--color-gray-200);
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: var(--color-gray-400);
  letter-spacing: 0.08em;
}

/* ===================================
   PAGINATION
=================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) 0;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.pagination a, .pagination span {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-gray-200);
}

.pagination .current {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

/* ===================================
   RESPONSIVE
=================================== */
@media (max-width: 900px) {
  .posts-grid {
    grid-template-columns: 1fr 1fr;
  }

  .posts-grid--large {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  :root {
    --spacing-lg: 2.5rem;
    --spacing-xl: 3.5rem;
  }

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

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-sm) var(--spacing-md);
  }

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

  .site-nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .nav-toggle {
    display: block;
  }
}