/* ===============================
   FOXJIN MEDIA
   articles.html / articles-en.html

   Purpose:
   - Japanese online news / media style
   - Mobile-first
   - Tablet friendly
   - Desktop magazine layout
   - No dark/light theme toggle
   - Reuses Foxjin header/nav/menu/language-toggle wiring
================================ */

/* ===============================
   DESIGN TOKENS
================================ */

:root {
  --ink: #141414;
  --ink-soft: #444444;
  --muted: #707070;

  --paper: #f7f3ea;
  --paper-deep: #eee5d2;
  --white: #ffffff;

  --line: #ddd2bf;
  --line-dark: #b8aa92;

  --gold: #c79a2d;
  --gold-soft: #ead29a;

  --red: #b3312b;
  --red-soft: #e7c1bd;

  --green: #1f8a5b;

  --shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
  --shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.06);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --header-height-mobile: 78px;
  --header-height-desktop: 86px;

  --max-width: 1180px;
}

/* ===============================
     RESET
  ================================ */

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

html {
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
li,
figure,
blockquote {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: radial-gradient(
      circle at 88% 8%,
      rgba(199, 154, 45, 0.16),
      transparent 24%
    ),
    radial-gradient(circle at 4% 18%, rgba(179, 49, 43, 0.08), transparent 22%),
    var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", Arial, sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

/* ===============================
     GLOBAL LAYOUT
  ================================ */

.site-header,
main,
.site-footer {
  padding-left: 20px;
  padding-right: 20px;
}

.section-inner {
  width: min(var(--max-width), 100%);
  margin: 0 auto;
}

/* ===============================
     ACCESSIBILITY
  ================================ */

.nav-link:focus-visible,
.lang-link:focus-visible,
.menu-toggle:focus-visible,
.topic-pill:focus-visible,
.article-card:focus-visible,
.problem-card:focus-visible,
.read-link:focus-visible,
.cta-button:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

/* ===============================
     HEADER
  ================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(247, 243, 234, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: var(--header-height-mobile);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 900;
  min-width: 0;
}

.logo-img {
  width: 58px;
  height: 58px;
  object-fit: contain;
  flex: 0 0 auto;
}

.logo-text {
  color: var(--ink);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* ===============================
     LANGUAGE TOGGLE
  ================================ */

.language-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.lang-link {
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.lang-link:hover {
  color: var(--ink);
}

.lang-link.active {
  background: var(--ink);
  color: var(--white);
}

/* ===============================
     MOBILE MENU BUTTON
  ================================ */

.menu-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.menu-toggle span {
  width: 21px;
  height: 2px;
  background: var(--ink);
  margin: 0 auto;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===============================
     NAVIGATION
  ================================ */

.site-nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  z-index: 1000;
}

.site-nav.active {
  display: flex;
}

.nav-link {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 800;
  line-height: 1.2;
}

.nav-link:hover,
.nav-link.active {
  color: var(--red);
}

/* ===============================
     HERO
  ================================ */

.media-hero {
  padding: 3rem 0 2rem;
  border-bottom: 3px solid var(--ink);
}

.media-kicker {
  color: var(--red);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.media-hero h1 {
  max-width: 940px;
  font-size: clamp(2.2rem, 9vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
  margin-bottom: 1rem;
}

.media-hero p {
  max-width: 720px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* ===============================
     MAIN MEDIA LAYOUT
  ================================ */

.media-layout {
  padding: 2rem 0 4rem;
}

.media-grid {
  display: grid;
  gap: 2rem;
}

.media-main {
  min-width: 0;
}

/* ===============================
     FEATURED STORY
  ================================ */

.featured-story {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.featured-image {
  aspect-ratio: 16 / 9;
  min-height: 180px;
  background: linear-gradient(rgba(20, 20, 20, 0.2), rgba(20, 20, 20, 0.4)),
    linear-gradient(135deg, #2b2b2b, #7b1f1b);
}

.featured-content {
  padding: 1.4rem;
}

.section-label,
.article-category {
  display: inline-flex;
  align-items: center;
  color: var(--red);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.featured-content h2 {
  font-size: clamp(1.55rem, 6vw, 3rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.featured-content p {
  color: var(--ink-soft);
  margin-bottom: 1.2rem;
}

.read-link {
  display: inline-flex;
  color: var(--ink);
  font-weight: 900;
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  line-height: 1.2;
}

.read-link:hover {
  color: var(--red);
}

/* ===============================
     TOPIC STRIP
  ================================ */

.topic-strip {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  flex-wrap: nowrap;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.topic-pill {
  flex: 0 0 auto;
  padding: 0.65rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 800;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.topic-pill:hover,
.topic-pill.active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

/* ===============================
     SECTION HEADERS
  ================================ */

.media-section {
  margin-top: 2.4rem;
}

.media-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.7rem;
  margin-bottom: 1rem;
}

.media-section-header h2 {
  font-size: 1.35rem;
  line-height: 1.2;
}

/* ===============================
     ARTICLE GRID
  ================================ */

.article-grid {
  display: grid;
  gap: 1rem;
}

.article-card {
  background: var(--white);
  border: 1px solid var(--line);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--line-dark);
}

.article-thumb {
  aspect-ratio: 16 / 10;
  background: linear-gradient(rgba(20, 20, 20, 0.03), rgba(20, 20, 20, 0.08)),
    linear-gradient(135deg, #ece3d1, #c79a2d);
}

.article-body {
  padding: 1rem;
}

.article-body h3 {
  font-size: 1.08rem;
  line-height: 1.35;
  margin-bottom: 0.6rem;
}

.article-body p {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 0.8rem;
}

.article-meta {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

/* ===============================
     SIDEBAR
  ================================ */

.media-sidebar {
  display: grid;
  gap: 1.2rem;
  margin-top: 2rem;
}

.sidebar-box {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1.2rem;
}

.sidebar-box h2 {
  font-size: 1rem;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.6rem;
  margin-bottom: 0.9rem;
}

.sidebar-box p {
  color: var(--muted);
  font-size: 0.92rem;
}

/* ===============================
     POPULAR RANKING
  ================================ */

.ranking-list {
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.ranking-list a {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 0.75rem;
  text-decoration: none;
  font-weight: 800;
  line-height: 1.35;
}

.ranking-list a:hover {
  color: var(--red);
}

.ranking-number {
  color: var(--red);
  font-size: 1.4rem;
  font-weight: 900;
  line-height: 1;
}

/* ===============================
     BROWSE BY PROBLEM
  ================================ */

.problem-grid {
  display: grid;
  gap: 0.8rem;
}

.problem-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 5px solid var(--red);
  padding: 1rem;
  text-decoration: none;
  font-weight: 900;
  line-height: 1.35;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.problem-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
  border-color: var(--line-dark);
}

.problem-card span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

/* ===============================
     CTA
  ================================ */

.media-cta {
  margin: 3rem 0 0;
  padding: 2rem;
  background: var(--ink);
  color: var(--white);
}

.media-cta h2 {
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  line-height: 1.15;
}

.media-cta p {
  color: #dddddd;
  margin: 0.7rem 0 1.2rem;
  max-width: 700px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.3rem;
  border-radius: 999px;
  background: var(--gold);
  color: var(--ink);
  text-decoration: none;
  font-weight: 900;
}

.cta-button:hover {
  background: var(--gold-soft);
}

/* ===============================
     FOOTER
  ================================ */

.site-footer {
  border-top: 1px solid var(--line);
  padding-top: 2rem;
  padding-bottom: 2rem;
  background: var(--white);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-inner p {
  color: var(--muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-nav a {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--red);
}

/* ===============================
     SMALL MOBILE
  ================================ */

@media (max-width: 520px) {
  .site-header,
  main,
  .site-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    min-height: var(--header-height-mobile);
  }

  .logo-img {
    width: 54px;
    height: 54px;
  }

  .logo-text {
    display: none;
  }

  .language-toggle {
    max-width: 118px;
  }

  .lang-link {
    padding: 6px 9px;
    font-size: 0.76rem;
  }

  .media-hero {
    padding: 2.3rem 0 1.6rem;
  }

  .media-hero h1 {
    font-size: clamp(2rem, 12vw, 3.2rem);
    line-height: 1;
  }

  .media-hero p {
    font-size: 0.98rem;
  }

  .media-layout {
    padding-top: 1.4rem;
  }

  .featured-content,
  .article-body,
  .sidebar-box {
    padding: 1rem;
  }

  .featured-content h2 {
    font-size: 1.55rem;
  }

  .media-section-header {
    align-items: flex-start;
  }

  .media-cta {
    padding: 1.4rem;
  }
}

/* ===============================
     MOBILE + TABLET
  ================================ */

@media (max-width: 1023px) {
  .site-nav {
    top: var(--header-height-mobile);
  }

  .media-grid {
    display: block;
  }

  .media-sidebar {
    position: static;
    margin-top: 2rem;
  }

  .featured-story {
    display: block;
  }

  .featured-image {
    aspect-ratio: 16 / 9;
    min-height: 180px;
  }

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

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

/* ===============================
     TABLET
  ================================ */

@media (min-width: 640px) and (max-width: 1023px) {
  .site-header,
  main,
  .site-footer {
    padding-left: 24px;
    padding-right: 24px;
  }

  .featured-story {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .featured-image {
    aspect-ratio: auto;
    min-height: 100%;
  }

  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .media-sidebar {
    grid-template-columns: repeat(2, 1fr);
  }

  .media-sidebar .sidebar-box:last-child {
    grid-column: 1 / -1;
  }
}

/* ===============================
     DESKTOP
  ================================ */

@media (min-width: 1024px) {
  .site-header,
  main,
  .site-footer {
    padding-left: 32px;
    padding-right: 32px;
  }

  .header-inner {
    min-height: var(--header-height-desktop);
  }

  .menu-toggle {
    display: none;
  }

  .site-nav {
    display: flex !important;
    position: static;
    flex-direction: row;
    align-items: center;
    background: transparent;
    border: none;
    box-shadow: none;
    gap: 0.4rem;
  }

  .nav-link {
    border: none;
    padding: 0.45rem 0.75rem;
    white-space: nowrap;
  }

  .media-hero {
    padding: 4.2rem 0 2.8rem;
  }

  .media-layout {
    padding: 2.5rem 0 5rem;
  }

  .media-grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }

  .featured-story {
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
  }

  .featured-image {
    aspect-ratio: auto;
    min-height: 360px;
  }

  .featured-content {
    padding: 2rem;
  }

  .article-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .media-sidebar {
    position: sticky;
    top: 106px;
    margin-top: 0;
  }
}

/* ===============================
     WIDE DESKTOP
  ================================ */

@media (min-width: 1280px) {
  .nav-link {
    padding-left: 0.95rem;
    padding-right: 0.95rem;
  }

  .featured-content {
    padding: 2.4rem;
  }

  .article-body {
    padding: 1.15rem;
  }
}

/* ===============================
     REDUCED MOTION
  ================================ */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}