/* ============================================
   Web Extension Lab — Design System
   webextlab.joifup.com
   ============================================

   Color palette: warm white + orange
   Audience: developers (DevOps, SRE, indie hackers)
   Pages: blog, privacy policies, hub index

   Accessibility:
   - #c2410c on #ffffff = 6.2:1 (AAA)
   - #fb923c on #1c1917 = 7.6:1 (AAA)
   ============================================ */

/* --- Design Tokens --- */

:root {
  /* Background */
  --color-bg: #faf9f7;
  --color-surface: #ffffff;

  /* Text */
  --color-text: #1c1917;
  --color-text-secondary: #78716c;

  /* Orange accent */
  --color-accent: #c2410c;
  --color-accent-hover: #9a3412;
  --color-accent-light: #fff7ed;
  --color-accent-surface: #ffedd5;

  /* Structural */
  --color-border: #e7e5e4;
  --color-code-bg: #f5f5f4;

  /* Layout */
  --max-width: 720px;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1c1917;
    --color-surface: #292524;
    --color-text: #fafaf9;
    --color-text-secondary: #a8a29e;
    --color-accent: #fb923c;
    --color-accent-hover: #fdba74;
    --color-accent-light: #431407;
    --color-accent-surface: #7c2d12;
    --color-border: #44403c;
    --color-code-bg: #44403c;
  }
}

/* --- Reset & Base --- */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  padding: 0 1rem 2rem;
}

/* Top accent bar */
body::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, #ea580c, #f59e0b);
  margin: 0 -1rem 2rem;
}

/* --- Layout --- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 2.5rem 2rem;
}

.container--narrow {
  max-width: 480px;
  margin-top: 3rem;
  text-align: center;
}

@media (max-width: 640px) {
  .container {
    padding: 1.5rem 1.25rem;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
}

/* --- Typography --- */

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.375rem;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* Force h2 underline to full width */
h2::after {
  content: "";
  display: block;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 0.75rem;
}

strong {
  font-weight: 600;
}

/* --- Links --- */

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

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

/* --- Lists --- */

ul, ol {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.375rem;
}

/* --- Code --- */

code {
  background: var(--color-code-bg);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-size: 0.875em;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
}

/* --- Table --- */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 0.75rem;
  font-size: 0.925rem;
}

th, td {
  text-align: left;
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

/* --- Components --- */

/* Language switcher */
.lang-switcher {
  text-align: right;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.lang-switcher a {
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.lang-switcher a:hover {
  background: var(--color-accent-light);
  text-decoration: none;
}

/* Meta text (dates, last-updated) */
.published-date,
.last-updated {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

/* Intro / lead paragraph */
.intro {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

/* Highlight box (callouts) */
.highlight-box {
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-accent);
  padding: 0.75rem 1rem;
  border-radius: 0 6px 6px 0;
  margin-bottom: 0.75rem;
}

/* CTA box */
.cta-box {
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1.25rem;
  border-radius: 0 6px 6px 0;
  margin: 2rem 0;
}

.cta-box a {
  font-weight: 600;
}

/* Screenshots */
.screenshot {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  margin: 1rem 0;
}

.screenshot-caption {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}

/* Site header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.site-header__logo {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.site-header__logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.site-header__nav {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
}

.site-header__nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

/* Site footer */
.site-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.site-footer__nav {
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.site-footer__nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

.site-footer__sep {
  color: var(--color-border);
  margin: 0 0.375rem;
}

.site-footer__copy {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  margin-bottom: 0;
}

/* --- Landing Page --- */

/* Hero */
.hero {
  text-align: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Section titles (landing page) */
.section-heading {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 1.25rem;
  padding-bottom: 0.375rem;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.section-heading::after {
  content: "";
  display: block;
}

/* Extension cards grid */
.extensions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.ext-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.15s;
}

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

.ext-card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.ext-card__body {
  padding: 0.875rem 1rem;
}

.ext-card__header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.ext-card__name {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}

.ext-card__tagline {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.ext-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.ext-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.ext-card__links a {
  text-decoration: none;
}

.ext-card__links a:hover {
  text-decoration: underline;
}

/* Badge */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge--live {
  background: #dcfce7;
  color: #166534;
}

.badge--soon {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

@media (prefers-color-scheme: dark) {
  .badge--live {
    background: #14532d;
    color: #86efac;
  }

  .badge--soon {
    background: var(--color-accent-light);
    color: var(--color-accent);
  }
}

/* Blog list */
.blog-list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 2.5rem;
}

.blog-item {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.blog-item__date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
  min-width: 5.5rem;
}

.blog-item__title {
  font-size: 0.925rem;
  font-weight: 500;
}

.blog-item__langs {
  margin-left: auto;
  font-size: 0.8rem;
  white-space: nowrap;
  color: var(--color-text-secondary);
}

.blog-item__langs a {
  font-size: 0.8rem;
}

/* Privacy links */
.privacy-list {
  list-style: none;
  padding-left: 0;
  columns: 2;
  column-gap: 1.5rem;
  margin-bottom: 2rem;
}

.privacy-list li {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

/* Separator */
.sep {
  color: var(--color-text-secondary);
  margin: 0 0.25rem;
}

/* Install button (inline) */
.btn-install {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.625rem;
  border-radius: 6px;
  background: var(--color-accent);
  color: #fff !important;
  text-decoration: none !important;
  transition: background 0.15s;
}

.btn-install:hover {
  background: var(--color-accent-hover);
  color: #fff !important;
}

/* --- Blog Index / Listing --- */

.blog-index__desc {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* Tag navigation */
.tag-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem;
  margin-bottom: 2rem;
}

.tag-nav__label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-right: 0.25rem;
}

/* Tag badge */
.tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}

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

.tag--sm {
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
}

.tag--active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.tag--active:hover {
  color: #fff;
}

/* Blog listing */
.blog-listing {
  list-style: none;
  padding-left: 0;
}

.blog-listing__item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}

.blog-listing__item:first-child {
  padding-top: 0;
}

.blog-listing__article--thumb {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.blog-listing__thumb {
  flex-shrink: 0;
  width: 140px;
}

.blog-listing__thumb img {
  width: 100%;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  display: block;
}

.blog-listing__item:last-child {
  border-bottom: none;
}

.blog-listing__date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.blog-listing__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0.25rem 0 0.375rem;
  border-bottom: none;
  display: block;
}

.blog-listing__title a {
  color: var(--color-text);
}

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

.blog-listing__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.blog-listing__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

/* Post tags (in article) */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.5rem;
}

/* Related posts */
.related-posts {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.related-posts__heading {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.related-posts__list {
  list-style: none;
  padding-left: 0;
}

.related-posts__list li {
  margin-bottom: 0.5rem;
  font-size: 0.925rem;
}

.related-posts__date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-left: 0.5rem;
}

/* Post navigation */
.post-nav {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.breadcrumb__sep {
  margin: 0 0.375rem;
  color: var(--color-border);
}

/* View all link */
.view-all {
  display: inline-block;
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

/* --- Responsive --- */

@media (max-width: 640px) {
  h1 {
    font-size: 1.5rem;
  }

  body::before {
    margin: 0 -1rem 1.5rem;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

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

  .blog-item {
    flex-direction: column;
    gap: 0.125rem;
  }

  .blog-item__langs {
    margin-left: 0;
  }

  .privacy-list {
    columns: 1;
  }

  .ext-card__header {
    flex-direction: column;
    gap: 0.125rem;
  }

  .blog-listing__article--thumb {
    flex-direction: column;
  }

  .blog-listing__thumb {
    width: 100%;
  }
}