/* ══════════════════════════════════════════════════
   Yotsuba B — 4chan /b/ blue theme
   Periwinkle bg, green accents, soft borders
   ══════════════════════════════════════════════════ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.5rem;
  --space-2xl: 2rem;
  --space-3xl: 3rem;

  --max-content: 42rem;
  --max-wide: 72rem;
  --main-pad-x: clamp(1rem, 3vw, 2rem);
  --header-pad-x: var(--main-pad-x);

  --radius-sm: 3px;
  --radius-md: 5px;
  --radius-lg: 7px;

  --transition-fast: 0.12s ease;
  --transition-base: 0.2s ease;

  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.0625rem;
  --font-size-h3: 1.125rem;
  --font-size-h2: 1.35rem;
  --font-size-h1: 1.75rem;

  color-scheme: light;
}

:root {
  --color-bg: #EEF2FF;
  --color-surface: rgba(238, 242, 255, 0.85);
  --color-surface-raised: rgba(224, 230, 250, 0.85);
  --color-surface-hover: rgba(212, 220, 245, 0.85);
  --color-text: #333333;
  --color-text-secondary: #555555;
  --color-muted: #888888;
  --color-accent: #789922;
  --color-accent-hover: #5C7A1A;
  --color-accent-strong: #5C7A1A;
  --color-accent-subtle: #E8F0D7;
  --color-border: #B8BED4;
  --color-border-hover: #A0A6BC;
  --color-divider: #C8CDE0;
  --color-focus-ring: #789922;
  --color-link: #0000EE;
  --color-link-hover: #DD0000;
  --color-link-visited: #551A8B;
  --color-code-bg: #E5E9F5;
  --color-blockquote-border: #789922;
  --color-blockquote-bg: #E8F0D7;

  --color-nav-hover: #C5D0E8;
  --color-tag-bg: #BCC5DD;
  --color-tag-text: #333333;
  --color-input-bg: #BCC5DD;
  --color-input-border: #AAAAAA;
  --color-input-focus-border: #789922;
  --color-card-bg: rgba(238, 242, 255, 0.85);
  --color-card-border: #B8BED4;
  --color-card-hover-border: #789922;
  --color-footer-border: #C8CDE0;
  --color-post-reply-bg: rgba(224, 230, 250, 0.88);
  --color-post-op-bg: rgba(238, 242, 255, 0.88);
  --color-post-border: #B7C5D9;
  --color-th-nav-bg: rgba(212, 220, 245, 0.85);



  --shadow-sm: 0 1px 1px rgba(0,0,0,0.04);
  --shadow-md: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg: 0 3px 8px rgba(0,0,0,0.06);
}

/* ── Base ── */
html {
  scroll-behavior: smooth;
  background: var(--color-bg);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 0.1em;
  transition: color var(--transition-fast);
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.4rem 0.75rem;
  background: var(--color-surface-raised);
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.skip-link:focus-visible {
  left: 0.5rem;
  top: 0.5rem;
}

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

h1, h2, h3 {
  line-height: 1.3;
  margin-top: 1.25em;
  margin-bottom: 0.35em;
  color: var(--color-text);
  font-weight: 700;
}

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

h1:first-child,
h2:first-child,
h3:first-child {
  margin-top: 0;
}

p {
  margin: 0 0 0.75em;
}

blockquote {
  margin: 0.75rem 0;
  padding: 0.5rem 0.65rem 0.5rem 0.85rem;
  border-left: 3px solid var(--color-blockquote-border);
  background: var(--color-blockquote-bg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 0.1em 0.35em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

pre {
  overflow-x: auto;
  padding: 0.75rem;
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  line-height: 1.45;
}

pre code {
  padding: 0;
  border: none;
  background: none;
}

.site-main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: #EEF2FF url("fade-blue.png") repeat-x 50% 0%;
}

/* ── Content ── */
.content {
  width: 100%;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: var(--space-xl) var(--main-pad-x);
}

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

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

.content--minimal {
  max-width: 34rem;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.content--blog {
  max-width: var(--max-wide);
}

.page-title {
  margin: 0 0 var(--space-lg);
  font-size: 36px;
  letter-spacing: -2px;
  color: #AF0A0F;
  font-weight: 700;
  font-family: Georgia, "Times New Roman", serif;
  text-align: center;
  width: 100%;
}

.content a {
  color: var(--color-link);
  text-decoration: underline;
}

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

.content a:visited {
  color: var(--color-link-visited);
}

/* ── Prose ── */
.content ul,
.content ol {
  margin: 0.5rem 0;
  padding-left: 1.35rem;
}

.content li + li {
  margin-top: 0.2rem;
}

.content hr {
  margin: 1.25rem 0;
  border: 0;
  border-top: 1px solid var(--color-divider);
}

.content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  margin: 0.75rem 0;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.content th,
.content td {
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.content th {
  background: var(--color-surface-raised);
  font-weight: 700;
}

.content img {
  border-radius: var(--radius-sm);
}

/* ── Greentext / Quote styling ── */
.greentext,
.content .greentext {
  color: var(--color-accent);
}

/* ── Board-style Header Bar ── */
.board-header {
  background: #DCE2F5;
  border-bottom: 1px solid;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .15);
  padding: 0 var(--main-pad-x);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.board-header-nav {
  display: flex;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0;
}

.board-header-nav a,
.board-header-nav .nav-bracket,
.board-header-nav .nav-sep {
  font-size: 9pt;
}

.board-header-nav a {
  display: block;
  padding: 0.2rem 0.45rem;
  color: #34345C;
  text-decoration: none;
  border-radius: 0;
}

.board-header-nav .nav-bracket {
  display: block;
  padding: 0.2rem 0.15rem;
  color: #34345C;
}

.board-header-nav .nav-sep {
  display: block;
  padding: 0.2rem 0;
  color: #34345C;
}

.board-header-nav a[aria-current="page"] {
  font-weight: 700;
  color: #34345C;
}

.site-social--nav {
  display: inline-flex;
  align-items: center;
}

.site-social--nav ul {
  display: flex;
  gap: 0;
}

.site-social--nav li {
  display: flex;
  align-items: center;
}

.board-header-nav .site-social--nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.35rem;
  font-size: 9pt;
  color: #34345C;
  text-decoration: none;
  border: none;
  border-radius: 0;
  background: none;
  transition: none;
}

.board-header-nav .site-social--nav a:hover {
  color: #34345C;
  background: none;
  border: none;
}

.site-social-sep {
  font-size: 9pt;
  color: #34345C;
  list-style: none;
}

.site-social--nav .site-social-icon {
  width: 0.85rem;
  height: 0.85rem;
  display: inline-block;
}

.site-social-sep {
  display: flex;
  align-items: center;
  font-size: 9pt;
  color: #34345C;
  padding: 0.2rem 0;
  list-style: none;
}

/* ── Post / Thread (imageboard-style) ── */
.post {
  background: var(--color-post-reply-bg);
  border: 1px solid var(--color-post-border);
  border-radius: 0;
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.post--op {
  background: var(--color-post-op-bg);
}

.post-header {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.15rem 0.5rem;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.post-name {
  font-weight: 700;
  color: var(--color-text);
  font-size: 0.8125rem;
}

.post-date {
  color: var(--color-muted);
  font-size: 0.6875rem;
}

.post-id {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.6875rem;
  cursor: pointer;
}

.post-id:hover {
  color: var(--color-link-hover);
}

.post-subject {
  display: block;
  font-weight: 700;
  color: #AF0A0F;
  font-size: 36px;
  letter-spacing: -2px;
  margin-bottom: var(--space-sm);
  font-family: Georgia, "Times New Roman", serif;
  text-align: center;
}

.post-excerpt {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-sm);
  color: #AF0A0F;
  text-align: center;
}

.post-body {
  font-size: var(--font-size-base);
  line-height: 1.6;
  clear: both;
}

.post-body > :last-child {
  margin-bottom: 0;
}

/* ── Post thumbnail (thread inline) ── */
.post-thumb-wrap {
  float: left;
  margin: 0 var(--space-lg) var(--space-sm) 0;
  padding: 0;
}

.post-thumb-link {
  display: block;
}

.post-thumb {
  display: block;
  max-width: 10rem;
  max-height: 12rem;
  width: auto;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: 0;
}

.post-thumb:hover {
  border-color: var(--color-border-hover);
}

.file-info {
  font-size: 0.6875rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
  clear: none;
}

.file-info a {
  color: var(--color-link);
}

/* ── Blog List (4chan catalog style) ── */
.catalog {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--space-md);
}

.catalog-item {
  margin: 0;
  min-width: 0;
  display: flex;
}

.catalog-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  color: inherit;
  text-decoration: none;
  background: rgba(182, 182, 182, 0.12);
  border: 2px solid rgba(111, 111, 111, 0.34);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.catalog-card:hover {
  text-decoration: none;
  color: #6699FF;
  border-color: rgba(111, 111, 111, 0.34);
  background: rgba(182, 182, 182, 0.12);
}

.catalog-thumb-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin-bottom: var(--space-xs);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.catalog-thumb {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.catalog-title {
  display: block;
  font-weight: 700;
  font-size: 0.8125rem;
  color: #AF0A0F;
  margin-bottom: 0.15rem;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.catalog-excerpt {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  color: #AF0A0F;
  font-size: 0.75rem;
  line-height: 1.4;
  margin-bottom: 0.25rem;
}

.catalog-meta {
  display: block;
  font-size: 0.625rem;
  color: var(--color-muted);
  margin-top: auto;
}

.catalog-list-empty {
  margin: 0;
  color: var(--color-muted);
  grid-column: 1 / -1;
}

/* ── Blog Index Header ── */
.blog-index-header {
  margin: 0 auto var(--space-xl);
  max-width: var(--max-content);
}

.blog-index-title {
  margin: 0 0 var(--space-sm);
  font-size: 36px;
  letter-spacing: -2px;
  color: #AF0A0F;
  font-weight: 700;
  font-family: Georgia, "Times New Roman", serif;
  text-align: center;
  width: 100%;
}

.blog-index-intro {
  text-align: center;
  color: #AF0A0F;
  font-size: var(--font-size-sm);
}

.blog-index-intro > :first-child {
  margin-top: 0;
}

.blog-index-intro > :last-child {
  margin-bottom: 0;
}

/* ── Blog Post (thread view) ── */
.blog-post-page .content--blog {
  max-width: var(--max-wide);
}

.blog-post {
  padding: 0;
}

.blog-post-body {
  font-size: var(--font-size-lg);
  line-height: 1.7;
}

.blog-post-body > :first-child {
  margin-top: 0;
}

.blog-post-body a {
  color: var(--color-link);
  text-decoration: underline;
}

.blog-post-body a:hover {
  color: var(--color-link-hover);
}

.blog-post-body h2,
.blog-post-body h3 {
  color: var(--color-text);
}

.blog-post-body blockquote {
  border-left-color: var(--color-blockquote-border);
}

/* ── Thread navigation bar ── */
.thread-nav {
  background: var(--color-th-nav-bg);
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: var(--space-sm) var(--space-lg);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.thread-nav a {
  color: var(--color-link);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.75rem;
}

.thread-nav a:hover {
  text-decoration: underline;
}

.thread-nav-title {
  color: var(--color-muted);
  font-size: 0.6875rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Hero / Intro band ── */
.hero-band {
  width: 100%;
  margin: 0;
  padding: var(--space-xl) var(--main-pad-x) 0;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-xl);
}

.hero-portrait-wrap {
  margin: 0;
  flex-shrink: 0;
}

.hero-portrait {
  display: block;
  width: clamp(5rem, 12vw, 7rem);
  height: clamp(5rem, 12vw, 7rem);
  border-radius: var(--radius-sm);
  object-fit: cover;
  object-position: center top;
  border: 1px solid var(--color-border);
}

.hero-copy {
  flex: 1;
  min-width: 0;
}

.hero-title {
  margin: 0;
  font-size: 36px;
  letter-spacing: -2px;
  line-height: 1.25;
  font-weight: 700;
  color: #AF0A0F;
  font-family: Georgia, "Times New Roman", serif;
  text-align: center;
}

.hero-lead {
  margin: 0.35rem 0 0;
  font-size: var(--font-size-sm);
  line-height: 1.55;
  color: #AF0A0F;
  text-align: center;
}

.hero-page .content--standard {
  padding-top: var(--space-xl);
}

.hero-page .content--standard > :first-child {
  margin-top: 0;
}

/* ── Social ── */
.site-social ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.site-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  text-decoration: none;
  padding: 0.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.site-social a:hover {
  color: var(--color-link);
  background: var(--color-nav-hover);
  border-color: var(--color-border);
  text-decoration: none;
}

.site-social-icon {
  width: 1rem;
  height: 1rem;
  display: block;
}

.site-social--hero {
  margin: var(--space-sm) 0 0;
}

.site-social--hero ul {
  gap: 0.35rem;
}

.site-social--footer a {
  width: 1.5rem;
  height: 1.5rem;
}

/* ── Footer ── */
.site-footer {
  margin-top: auto;
  padding: var(--space-lg) var(--main-pad-x);
  font-size: 0.6875rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-footer-border);
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  max-width: var(--max-wide);
  margin: 0 auto;
}

.site-footer-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.15rem 0.5rem;
  margin: 0;
}

.site-footer-copy,
.site-footer-tagline {
  margin: 0;
}

.site-footer-tagline::before {
  content: "·";
  margin-right: 0.4rem;
  color: var(--color-muted);
}

/* ── Tags ── */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  font-size: 0.6875rem;
  font-weight: 600;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.tag:hover {
  text-decoration: none;
  background: var(--color-accent-subtle);
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  background: var(--color-surface);
  color: var(--color-text);
}

.btn:hover {
  text-decoration: none;
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFEE;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #FFFFEE;
}

/* ── Forms ── */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
  display: block;
  width: 100%;
  padding: 0.35rem 0.5rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-input-focus-border);
}

.form-textarea {
  min-height: 5rem;
  resize: vertical;
}

/* ── Settings / Metadata table ── */
.meta-table {
  width: 100%;
  font-size: var(--font-size-sm);
  border-collapse: collapse;
}

.meta-table th {
  text-align: right;
  padding: 0.25rem 0.65rem 0.25rem 0;
  font-weight: 700;
  color: var(--color-accent);
  white-space: nowrap;
  vertical-align: top;
  width: 8rem;
}

.meta-table td {
  padding: 0.25rem 0;
  color: var(--color-text);
}

/* ── Emphasis markers ── */
.em {
  color: var(--color-accent);
  font-style: normal;
  font-weight: 700;
}

strong {
  font-weight: 700;
}

/* ── Spoiler ── */
.spoiler {
  background: var(--color-text);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  padding: 0 0.15em;
  transition: color var(--transition-base);
}

.spoiler:hover {
  color: var(--color-bg);
}

/* ── Two-column layout for content pages ── */
.layout-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

@media (max-width: 640px) {
  .layout-two-col {
    grid-template-columns: 1fr;
  }
}

/* ── Reply preview / post block ── */
.reply {
  background: var(--color-post-reply-bg);
  border: 1px solid var(--color-post-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm);
}

.reply-header {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.reply-header strong {
  color: var(--color-text);
}

.reply-quote {
  color: var(--color-accent);
}

/* ── Responsive ── */
@media (max-width: 720px) {
  .skip-link:focus-visible {
    left: var(--header-pad-x);
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .site-social--hero ul {
    justify-content: center;
  }

  .site-footer-inner {
    flex-direction: column;
    text-align: center;
  }

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

  .board-header {
    flex-direction: column;
    align-items: center;
  }
}