/*
Theme Name: Misuna Tech
*/

/* ========================================
   CSS Variables (Design Tokens)
   ======================================== */
:root {
  --color-bg: #0a0a0f;
  --color-bg-card: #12121a;
  --color-bg-elevated: #1a1a24;
  --color-border: #2a2a38;
  --color-text: #e8e8ed;
  --color-text-muted: #8888a0;
  --color-accent: #f97316;
  --color-accent-hover: #fb923c;
  --color-link: #f97316;
  --color-link-hover: #fb923c;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ========================================
   Layout
   ======================================== */
.site-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.content-area {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .content-area {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Header
   ======================================== */
.site-header {
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
}

.site-title a {
  color: var(--color-text);
}

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

.site-description {
  margin: 0.25rem 0 0;
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* ========================================
   Posts List (Index)
   ======================================== */
.posts-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.post-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}

.post-item-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.post-item-link:hover {
  color: inherit;
}

.post-item-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
  min-height: 160px;
}

@media (max-width: 600px) {
  .post-item-inner {
    grid-template-columns: 1fr;
  }
}

.post-thumbnail-link {
  display: block;
  aspect-ratio: 16/10;
  background: var(--color-bg-elevated);
  overflow: hidden;
}

@media (max-width: 600px) {
  .post-thumbnail-link {
    aspect-ratio: 21/9;
  }
}

.post-thumbnail-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.post-item:hover .post-thumbnail-link img {
  transform: scale(1.05);
}

.post-thumbnail-link .placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 2.5rem;
  font-family: var(--font-mono);
}

.post-content-wrap {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.post-date {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
}

.post-title {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
}

.post-item-link .post-title {
  color: var(--color-text);
  transition: color var(--transition);
}

.post-item-link:hover .post-title {
  color: var(--color-accent);
}

.post-excerpt {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========================================
   Pagination
   ======================================== */
.pagination-wrap {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-weight: 500;
  transition: all var(--transition);
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
}

.pagination .page-numbers.dots {
  border: none;
  background: transparent;
  cursor: default;
}

.pagination .page-numbers.dots:hover {
  color: var(--color-text);
  background: transparent;
}

/* ========================================
   Sidebar
   ======================================== */
.sidebar {
  position: sticky;
  top: 100px;
}

.widget {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.widget-title {
  margin: 0 0 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

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

.widget li {
  margin-bottom: 0.5rem;
}

.widget li:last-child {
  margin-bottom: 0;
}

.widget a {
  color: var(--color-text-muted);
  font-size: 1rem;
}

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

.widget .tagcloud a,
.widget .cat-item a {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  margin: 0.2rem 0.2rem 0 0;
  background: var(--color-bg-elevated);
  border-radius: 4px;
  font-size: 0.95rem;
}

.widget .tagcloud a:hover,
.widget .cat-item a:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 1.5rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  font-size: 1rem;
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--color-text-muted);
}

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

/* ========================================
   404 Page
   ======================================== */
.error-404-wrap {
  text-align: center;
  padding: 4rem 2rem;
}

.error-404-code {
  font-size: 8rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-accent);
  font-family: var(--font-mono);
  text-shadow: 0 0 40px rgba(249, 115, 22, 0.35);
  margin-bottom: 0.5rem;
}

.error-404-title {
  font-size: 1.75rem;
  margin: 0 0 1rem;
  color: var(--color-text);
}

.error-404-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.error-404-link {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-bg) !important;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background var(--transition);
}

.error-404-link:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg) !important;
}

/* ========================================
   No posts
   ======================================== */
.no-posts {
  color: var(--color-text-muted);
  text-align: center;
  padding: 3rem 2rem;
}

/* ========================================
   Page Title (optional)
   ======================================== */
.page-header {
  margin-bottom: 2rem;
}

.page-title {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
}

/* ========================================
   Single Post
   ======================================== */
.single-post-header {
  margin-bottom: 1.5rem;
}

.single-post .post-date {
  display: block;
  margin-bottom: 0.5rem;
}

.single-post-title {
  margin: 0;
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.02em;
  position: relative;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--color-accent);
  text-shadow: 0 0 60px rgba(249, 115, 22, 0.12);
}

@media (max-width: 600px) {
  .single-post-title {
    font-size: 2rem;
  }
}

.single-post-thumbnail {
  margin-bottom: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.single-post-thumbnail img {
  width: 100%;
  height: auto;
}

.single-post-content {
  font-size: 1.0625rem;
  color: var(--color-text);
  line-height: 1.8;
}

.single-post-content p {
  margin-bottom: 1rem;
}

.single-post-content a {
  text-decoration: underline;
}

.single-post-content pre,
.single-post-content code {
  font-family: var(--font-mono);
  background: var(--color-bg-elevated);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

.single-post-content pre {
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1rem;
}

/* ========================================
   Block Editor Headings (h2〜h5 .wp-block-heading)
   ======================================== */
.single-post-content .wp-block-heading,
.entry-content .wp-block-heading {
  color: var(--color-text);
  font-weight: 600;
  line-height: 1.4;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  scroll-margin-top: 6rem;
}

.single-post-content .wp-block-heading:first-child,
.entry-content .wp-block-heading:first-child {
  margin-top: 0;
}

/* h2 */
.single-post-content h2.wp-block-heading,
.entry-content h2.wp-block-heading {
  font-size: 1.75rem;
  padding-left: 1rem;
  border-left: 4px solid var(--color-accent);
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.single-post-content h2.wp-block-heading:first-child,
.entry-content h2.wp-block-heading:first-child {
  margin-top: 0;
}

/* h3 */
.single-post-content h3.wp-block-heading,
.entry-content h3.wp-block-heading {
  font-size: 1.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--color-border);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

/* h4 */
.single-post-content h4.wp-block-heading,
.entry-content h4.wp-block-heading {
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

/* h5 */
.single-post-content h5.wp-block-heading,
.entry-content h5.wp-block-heading {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}