/* ============================================================
   住友電装コーポレートサイト ワイヤーフレーム CSS
   カラー: 白黒（グレー）ベース
   ============================================================ */

:root {
  --black: #222;
  --dark: #444;
  --mid: #888;
  --light: #ccc;
  --lighter: #e5e5e5;
  --bg: #f5f5f5;
  --white: #fff;
  --accent: #555;
  --font: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--black);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---- Layout ---- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 64px 0; }
.section--gray { background: var(--bg); }
.section--dark { background: var(--black); color: var(--white); }

/* ---- Header ---- */
.header {
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Upper bar: utility (news link, lang, contact) */
.header__upper {
  background: var(--bg);
  border-bottom: 1px solid var(--lighter);
}
.header__upper-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 36px;
  font-size: 12px;
}
.header__upper-inner a {
  color: var(--mid);
  text-decoration: none;
  transition: color 0.15s;
}
.header__upper-inner a:hover { color: var(--black); }
.header__upper-inner .sep { color: var(--light); margin: 0 2px; }
.header__news-link { color: var(--dark) !important; font-weight: 500; }
.header__news-link:hover { color: var(--black) !important; }
.header__contact-btn {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid var(--dark);
  color: var(--dark) !important;
  font-size: 11px;
  transition: all 0.15s;
}
.header__contact-btn:hover { background: var(--dark); color: var(--white) !important; }

/* Lower bar: logo + global nav */
.header__lower {
  border-bottom: 1px solid var(--lighter);
}
.header__lower-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.header__logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--black);
  text-decoration: none;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.header__logo span { font-weight: 400; font-size: 12px; color: var(--mid); display: block; }

/* Global Nav */
.gnav { display: flex; gap: 0; list-style: none; }
.gnav > li { position: relative; }
.gnav > li > a {
  display: flex;
  align-items: center;
  height: 64px;
  padding: 0 14px;
  font-size: 13px;
  color: var(--dark);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}
.gnav > li > a:hover,
.gnav > li > a.is-active { border-color: var(--black); color: var(--black); }

/* Mega Menu */
.mega {
  display: none;
  position: absolute;
  top: 64px;
  left: 50%;
  transform: translateX(-50%);
  min-width: 520px;
  background: var(--white);
  border: 1px solid var(--lighter);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  padding: 24px 28px;
  z-index: 200;
}
.gnav > li:hover > .mega { display: flex; }
.mega__col { flex: 1; min-width: 0; }
.mega__col + .mega__col { margin-left: 24px; padding-left: 24px; border-left: 1px solid var(--lighter); }
.mega__heading {
  font-size: 12px;
  font-weight: 700;
  color: var(--mid);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.mega__list { list-style: none; }
.mega__list li { margin-bottom: 6px; }
.mega__list a {
  font-size: 13px;
  color: var(--dark);
  text-decoration: none;
  transition: color 0.15s;
}
.mega__list a:hover { color: var(--black); text-decoration: underline; }
.mega__desc {
  font-size: 11px;
  color: var(--mid);
  margin-top: 2px;
  line-height: 1.5;
}

/* Mobile menu toggle */
.menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* ---- Breadcrumb ---- */
.breadcrumb {
  padding: 12px 0;
  font-size: 12px;
  color: var(--mid);
  border-bottom: 1px solid var(--lighter);
}
.breadcrumb a { color: var(--mid); }
.breadcrumb a:hover { color: var(--black); }
.breadcrumb span { margin: 0 6px; }

/* ---- Page Header ---- */
.page-header {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--lighter);
}
.page-header h1 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--black);
}
.page-header .lead {
  margin-top: 16px;
  font-size: 15px;
  color: var(--dark);
  max-width: 720px;
  line-height: 1.8;
}
.page-header .section-label {
  font-size: 12px;
  color: var(--mid);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

/* ---- Content ---- */
.content { padding: 48px 0 64px; }
.content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--lighter);
}
.content h2:first-child { margin-top: 0; }
.content h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 32px 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--light);
}
.content p { margin-bottom: 16px; max-width: 760px; }
.content ul, .content ol { margin: 0 0 16px 24px; }
.content li { margin-bottom: 6px; }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; margin: 16px 0 24px; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  padding: 10px 14px;
  border: 1px solid var(--lighter);
  text-align: left;
  vertical-align: top;
}
th {
  background: var(--bg);
  font-weight: 600;
  white-space: nowrap;
}

/* ---- Cards ---- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin: 24px 0; }
.card {
  border: 1px solid var(--lighter);
  padding: 24px;
  background: var(--white);
}
.card__title { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.card__text { font-size: 14px; color: var(--dark); }
.card__link { display: inline-block; margin-top: 12px; font-size: 13px; }

/* ---- Stats ---- */
.stats { display: flex; gap: 32px; flex-wrap: wrap; margin: 32px 0; }
.stat {
  text-align: center;
  flex: 1;
  min-width: 120px;
  padding: 24px 16px;
  border: 1px solid var(--lighter);
}
.stat__number { font-size: 36px; font-weight: 700; line-height: 1.2; }
.stat__label { font-size: 13px; color: var(--mid); margin-top: 4px; }

/* ---- FAQ ---- */
.faq-item { border-bottom: 1px solid var(--lighter); padding: 16px 0; }
.faq-q {
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-q::after { content: "+"; font-size: 20px; color: var(--mid); transition: transform 0.2s; }
.faq-q.is-open::after { content: "−"; }
.faq-a { padding: 12px 0 4px; font-size: 14px; color: var(--dark); display: none; }
.faq-a.is-open { display: block; }

/* ---- Progress bars ---- */
.progress { margin: 8px 0 16px; }
.progress__bar {
  height: 20px;
  background: var(--lighter);
  border-radius: 4px;
  overflow: hidden;
}
.progress__fill {
  height: 100%;
  background: var(--dark);
  border-radius: 4px;
}
.progress__label { font-size: 13px; color: var(--mid); margin-top: 4px; }

/* ---- Timeline ---- */
.timeline { position: relative; padding-left: 32px; margin: 32px 0; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--lighter);
}
.timeline__item { position: relative; margin-bottom: 32px; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--dark);
  border: 2px solid var(--white);
}
.timeline__year { font-weight: 700; font-size: 15px; }
.timeline__text { font-size: 14px; color: var(--dark); margin-top: 4px; }

/* ---- Wireframe placeholders ---- */
.placeholder {
  background: var(--bg);
  border: 2px dashed var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mid);
  font-size: 14px;
  min-height: 200px;
  margin: 24px 0;
  text-align: center;
  padding: 24px;
}
.placeholder--hero { min-height: 400px; font-size: 24px; font-weight: 700; }
.placeholder--map { min-height: 360px; }
.placeholder--video { min-height: 300px; }

/* ---- Footer Pickup Banners ---- */
.footer-pickups {
  background: var(--dark);
  border-bottom: 1px solid #555;
  padding: 32px 0;
}
.footer-pickups__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-pickups__label {
  font-size: 11px;
  color: var(--mid);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-pickups__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.footer-pickup {
  display: block;
  border: 1px solid #555;
  padding: 20px;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.footer-pickup:hover {
  border-color: var(--light);
  background: rgba(255,255,255,0.05);
}
.footer-pickup__cat {
  font-size: 11px;
  color: var(--mid);
  margin-bottom: 6px;
}
.footer-pickup__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 4px;
}
.footer-pickup__desc {
  font-size: 12px;
  color: var(--light);
  line-height: 1.6;
}
@media (max-width: 768px) {
  .footer-pickups__grid { grid-template-columns: 1fr; }
}

/* ---- Footer ---- */
.footer {
  background: var(--black);
  color: var(--light);
  padding: 48px 0 32px;
  font-size: 13px;
}
.footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.footer__nav-group h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.footer__nav-group ul { list-style: none; }
.footer__nav-group li { margin-bottom: 4px; }
.footer__nav-group a { color: var(--light); text-decoration: none; font-size: 12px; }
.footer__nav-group a:hover { color: var(--white); }
.footer__bottom {
  border-top: 1px solid var(--dark);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer__copyright { font-size: 12px; color: var(--mid); }
.footer__links { display: flex; gap: 16px; }
.footer__links a { color: var(--mid); text-decoration: none; font-size: 12px; }

/* ---- CTA Banner ---- */
.cta-banner {
  background: var(--bg);
  border: 1px solid var(--lighter);
  padding: 32px;
  text-align: center;
  margin: 48px 0;
}
.cta-banner__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.cta-banner__links { display: flex; gap: 16px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.cta-banner__links a {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--dark);
  color: var(--dark);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.2s;
}
.cta-banner__links a:hover { background: var(--dark); color: var(--white); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .gnav { display: none; }
  .menu-toggle { display: block; }
  .gnav.is-open { display: flex; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--lighter); padding: 16px; z-index: 201; }
  .gnav.is-open > li > a { height: auto; padding: 10px 14px; }
  .mega { display: none !important; }
  .gnav.is-open .mega { display: block !important; position: static; transform: none; min-width: 0; box-shadow: none; border: none; padding: 0 0 0 16px; flex-direction: column; }
  .gnav.is-open .mega__col { margin: 0; padding: 0; border: none; }
  .gnav.is-open .mega__col + .mega__col { margin-top: 8px; }
  .gnav.is-open .mega__heading { display: none; }
  .header__upper-inner { gap: 10px; font-size: 11px; height: 32px; }
  .header__news-link { display: none; }
  .header__lower-inner { height: 56px; }
  .page-header h1 { font-size: 22px; }
  .stats { gap: 16px; }
  .stat { padding: 16px 8px; }
  .stat__number { font-size: 28px; }
  .card-grid { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: repeat(2, 1fr); }
}