/*
Theme Name: Leaf & Living
Theme URI: https://leafandliving.jp
Author: Leaf & Living
Author URI: https://leafandliving.jp
Description: A natural, editorial lifestyle theme for Leaf & Living — inspired by international botanical magazines.
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: leafliving
Tags: blog, custom-logo, custom-menu, featured-images, full-width-template, post-formats, rtl-language-support, threaded-comments, translation-ready
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Colors */
  --color-bg:          #FAFAF7;
  --color-surface:     #FFFFFF;
  --color-border:      #E8E4DC;
  --color-text:        #1C1C1A;
  --color-text-muted:  #7A7A6E;
  --color-accent:      #3D5A3E;
  --color-accent-soft: #F0F4EF;
  --color-warm:        #C8A882;
  --color-warm-soft:   #FAF5EE;

  /* Typography */
  --font-display:  'Cormorant Garamond', 'Georgia', serif;
  --font-body:     'Jost', 'Helvetica Neue', sans-serif;
  --font-label:    'Jost', sans-serif;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  2rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  /* Layout */
  --container-width: 1200px;
  --content-width:   720px;
  --radius-sm: 2px;
  --radius-md: 6px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: 0.01em;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h4 { font-size: 1.4rem; }
h5 { font-size: 1.2rem; }
h6 { font-size: 1rem; }

p { margin-bottom: 1.5em; }
p:last-child { margin-bottom: 0; }

/* Category label */
.label {
  font-family: var(--font-label);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.container--narrow {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 72px;
  gap: var(--space-lg);
}

.site-header__nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.site-header__nav a {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color 0.2s var(--ease);
  position: relative;
}

.site-header__nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.3s var(--ease);
}

.site-header__nav a:hover { color: var(--color-text); }
.site-header__nav a:hover::after { width: 100%; }

.site-logo {
  text-align: center;
}

.site-logo a {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-text);
  transition: opacity 0.2s;
}
.site-logo a:hover { opacity: 0.7; }

.site-logo__tagline {
  font-family: var(--font-label);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: block;
  margin-top: -2px;
}

.site-header__actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-md);
}

/* ============================================================
   HERO — Featured Post
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
  border-bottom: 1px solid var(--color-border);
}

.hero__image {
  position: relative;
  overflow: hidden;
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.hero:hover .hero__image img { transform: scale(1.03); }

.hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl);
  background: var(--color-surface);
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.hero__title {
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  margin-bottom: var(--space-md);
  line-height: 1.15;
}

.hero__excerpt {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  max-width: 480px;
}

.hero__byline {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ============================================================
   READ MORE LINK
   ============================================================ */
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: gap 0.2s var(--ease);
}

.read-more::after {
  content: '→';
  transition: transform 0.2s var(--ease);
}

.read-more:hover { gap: 0.8em; }
.read-more:hover::after { transform: translateX(3px); }

/* ============================================================
   ARTICLE GRID
   ============================================================ */
.section {
  padding-block: var(--space-2xl);
}

.section__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.section__title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl) var(--space-lg);
}

.article-grid--featured {
  grid-template-columns: 1.6fr 1fr 1fr;
}

/* ============================================================
   ARTICLE CARD
   ============================================================ */
.card {
  display: flex;
  flex-direction: column;
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-border);
  margin-bottom: var(--space-md);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.card:hover .card__image img { transform: scale(1.05); }

.card__image--tall { aspect-ratio: 3 / 4; }
.card__image--wide { aspect-ratio: 16 / 9; }

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.card__date {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
  transition: color 0.2s var(--ease);
}

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

.card__excerpt {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   HORIZONTAL RULE / DIVIDER
   ============================================================ */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-xl);
}

.divider--botanical {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border: none;
  margin-block: var(--space-xl);
}

.divider--botanical::before,
.divider--botanical::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.divider--botanical span {
  font-size: 1.2rem;
  opacity: 0.4;
}

/* ============================================================
   CATEGORY BANNER
   ============================================================ */
.category-strip {
  display: flex;
  gap: 0;
  border-block: 1px solid var(--color-border);
  overflow-x: auto;
  scrollbar-width: none;
}

.category-strip::-webkit-scrollbar { display: none; }

.category-strip__item {
  flex: 1;
  min-width: 120px;
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  border-right: 1px solid var(--color-border);
  font-family: var(--font-label);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: all 0.2s var(--ease);
  cursor: pointer;
}

.category-strip__item:last-child { border-right: none; }
.category-strip__item:hover,
.category-strip__item--active {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

/* ============================================================
   SINGLE POST
   ============================================================ */
.post-header {
  padding-block: var(--space-2xl);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.post-header__meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.post-header__title {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  max-width: 860px;
  margin-inline: auto;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.post-header__excerpt {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin-inline: auto;
  line-height: 1.8;
}

.post-featured-image {
  width: 100%;
  max-height: 580px;
  object-fit: cover;
  display: block;
}

.post-content {
  padding-block: var(--space-2xl);
}

.post-content p {
  font-size: 1.05rem;
  line-height: 1.85;
  margin-bottom: 1.6em;
  color: var(--color-text);
}

.post-content h2 {
  font-size: 2rem;
  margin-top: 2.5em;
  margin-bottom: 0.8em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--color-border);
}

.post-content h3 {
  font-size: 1.5rem;
  margin-top: 2em;
  margin-bottom: 0.6em;
}

.post-content ul,
.post-content ol {
  list-style: initial;
  padding-left: 1.5em;
  margin-bottom: 1.6em;
}

.post-content li {
  margin-bottom: 0.5em;
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin-left: 0;
  margin-bottom: 1.6em;
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: 1.3rem;
  line-height: 1.6;
}

.post-content img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-block: var(--space-lg);
}

.image-credit {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: right;
  margin-top: -0.5rem;
  margin-bottom: var(--space-lg);
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-2xl);
  align-items: start;
}

.sidebar { position: sticky; top: 100px; }

.sidebar-widget {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-widget:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.sidebar-widget__title {
  font-family: var(--font-label);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

/* ============================================================
   FIXED PAGE CONTENT（page.php）
   ============================================================ */

.page-content {
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
}

.page-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 400;
  color: var(--color-text);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--color-border);
}

.page-content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.page-content p {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.page-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color 0.2s var(--ease);
}
.page-content a:hover { text-decoration-color: var(--color-accent); }

.page-content ul,
.page-content ol {
  padding-left: 1.5em;
  margin-bottom: var(--space-md);
  line-height: 1.85;
}

.page-content li { margin-bottom: 0.4em; }

.page-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-xl) 0;
}

/* ============================================================
   HEADER SEARCH
   ============================================================ */
.header-search__form {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
  background: var(--color-surface);
}

.header-search__form:focus-within {
  border-color: var(--color-accent);
}

.header-search__input {
  border: none;
  outline: none;
  background: transparent;
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-text);
  padding: 0.45em 0.75em;
  width: 180px;
  transition: width 0.3s var(--ease);
}

.header-search__input::placeholder {
  color: var(--color-text-muted);
}

.header-search__input:focus {
  width: 220px;
}

.header-search__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-left: 1px solid var(--color-border);
  padding: 0.45em 0.7em;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.header-search__btn:hover {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding-block: var(--space-2xl);
  margin-top: var(--space-2xl);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-lg);
}

.footer-brand__logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-brand__desc {
  font-size: 0.85rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  max-width: 280px;
}

.footer-nav__title {
  font-family: var(--font-label);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--space-md);
}

.footer-nav__list li {
  margin-bottom: var(--space-sm);
}

.footer-nav__list a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}

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

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  padding-block: var(--space-xl);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-label);
  font-size: 0.8rem;
  border: 1px solid var(--color-border);
  transition: all 0.2s var(--ease);
}

.pagination a:hover,
.pagination .current {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid--featured { grid-template-columns: 1fr 1fr; }
  .layout-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
}

@media (max-width: 768px) {
  .container { padding-inline: var(--space-md); }
  .hero { grid-template-columns: 1fr; }
  .hero__image { aspect-ratio: 4/3; }
  .hero__content { padding: var(--space-lg); }
  .article-grid { grid-template-columns: 1fr; }
  .site-header__inner {
    grid-template-columns: 1fr auto 1fr;
  }
  .site-header__nav { display: none; }
  .site-logo {
    grid-column: 2;
    white-space: nowrap;
  }
  .site-header__actions {
    grid-column: 3;
    justify-content: flex-end;
  }
  .header-search__input { width: 110px; }
  .header-search__input:focus { width: 130px; }
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }
}