/* ==========================================
   西海サスティナブルソリューション
   共通スタイル
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;600&family=Cormorant+Garamond:ital,wght@0,300;0,600;1,300&family=Noto+Sans+JP:wght@300;400&display=swap');

:root {
  --ink:        #2a2118;
  --brown:      #5d4037;
  --brown-mid:  #8d6e63;
  --brown-pale: #bcaaa4;
  --cream:      #fdf6ec;
  --cream-dark: #f0e6d3;
  --sea:        #4a7c8e;
  --sea-light:  #7fb3c2;
  --white:      #ffffff;

  --header-h:   72px;
  --font-serif: 'Noto Serif JP', 'Cormorant Garamond', serif;
  --font-sans:  'Noto Sans JP', sans-serif;
}

/* ─── Reset ──────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-serif);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.9;
  font-size: 15px;
}
a { color: var(--brown); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ─── HEADER ─────────────────────────────── */
#container { min-height: 100vh; }

header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--white);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  box-shadow: 0 1px 0 rgba(93,64,55,.12);
}

#logo a { display: block; text-decoration: none; line-height: 1; }
#logo img { height: 44px; width: auto; display: block; }

/* NAV */
#menubar nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
}
#menubar nav ul li a {
  font-family: var(--font-sans);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--ink);
  font-weight: 400;
  text-transform: uppercase;
  transition: color .2s;
}
#menubar nav ul li a:hover { color: var(--sea); text-decoration: none; }

/* ─── HAMBURGER ──────────────────────────── */
#menubar_hdr {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1000;
}
#menubar_hdr span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--brown);
  transition: all .3s;
  border-radius: 2px;
}

/* ─── HERO SLIDESHOW ─────────────────────── */
#mainimg-box {
  position: relative;
  width: 100%;
  height: calc(100vh - var(--header-h));
  max-height: 720px;
  overflow: hidden;
}
.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.slide.active { opacity: 1; }

.hero-caption {
  position: absolute;
  bottom: 80px;
  left: 60px;
  color: var(--white);
  z-index: 10;
}
.hero-caption h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 300;
  line-height: 1.2;
  text-shadow: 0 2px 20px rgba(0,0,0,.4);
  letter-spacing: .04em;
}
.hero-caption p {
  font-family: var(--font-sans);
  font-size: .8rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  margin-top: 10px;
  opacity: .85;
}

.slide-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: background .3s;
}
.dot.active { background: var(--white); }

/* ─── CONTENTS AREA ──────────────────────── */
#contents {
  padding: 60px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

main.column {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 60px;
}

/* ─── SECTIONS ───────────────────────────── */
section { margin-bottom: 60px; }

h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.9rem;
  font-weight: 300;
  letter-spacing: .06em;
  color: var(--brown);
  border-bottom: 1px solid var(--brown-pale);
  padding-bottom: 10px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
h2 .small {
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--brown-mid);
  text-transform: uppercase;
  font-weight: 300;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--brown);
}

p { margin-bottom: 14px; }

/* ─── NEWS LIST ──────────────────────────── */
dl.new { border-top: 1px solid var(--cream-dark); }
dl.new dt {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 0 4px;
  font-family: var(--font-sans);
  font-size: .82rem;
  color: var(--brown-mid);
}
dl.new dt span {
  background: var(--brown-pale);
  color: var(--white);
  font-size: .68rem;
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: .06em;
}
dl.new dt .icon-bg1 { background: var(--sea); }
dl.new dt .icon-bg2 { background: var(--brown-mid); }
dl.new dd {
  padding: 0 0 14px 0;
  border-bottom: 1px solid var(--cream-dark);
  font-size: .9rem;
}

/* ─── CARD GRID ──────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.card {
  background: var(--white);
  border: 1px solid var(--cream-dark);
  border-radius: 4px;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,.08); }
.card img { width: 100%; height: 200px; object-fit: cover; }
.card-content { padding: 20px; }
.card-content h3 { margin-top: 0; }
.card-content a {
  font-family: var(--font-sans);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--sea);
  font-weight: 400;
}

/* ─── PAGE HERO (inner pages) ────────────── */
.page-hero {
  height: 320px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: 40px 60px;
}
.page-hero-title {
  color: var(--white);
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.8rem;
  font-weight: 300;
  text-shadow: 0 2px 20px rgba(0,0,0,.5);
  letter-spacing: .06em;
}
.page-hero-title span {
  display: block;
  font-size: .75rem;
  font-family: var(--font-sans);
  letter-spacing: .22em;
  text-transform: uppercase;
  opacity: .8;
  margin-bottom: 6px;
}

/* ─── SIDEBAR ────────────────────────────── */
.sub .box1 {
  background: var(--white);
  border: 1px solid var(--cream-dark);
  padding: 24px;
  margin-bottom: 32px;
  border-radius: 4px;
}
.sub h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: .1em;
  color: var(--brown);
  border-bottom: 1px solid var(--cream-dark);
  padding-bottom: 8px;
  margin-bottom: 12px;
  margin-top: 0;
}
ul.submenu { list-style: none; }
ul.submenu li a {
  display: block;
  padding: 7px 0;
  font-family: var(--font-sans);
  font-size: .82rem;
  color: var(--ink);
  border-bottom: 1px dotted var(--cream-dark);
  letter-spacing: .04em;
}
ul.submenu li a:hover { color: var(--sea); text-decoration: none; padding-left: 6px; }
ul.submenu li a::before { content: '— '; color: var(--brown-pale); font-size: .7rem; }

/* ─── TAB ────────────────────────────────── */
.tab-menu {
  display: flex;
  gap: 0;
  margin-bottom: 30px;
  border-bottom: 2px solid var(--brown-pale);
}
.tab-btn {
  padding: 10px 24px;
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-sans);
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--brown-mid);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all .2s;
}
.tab-btn.active {
  color: var(--brown);
  border-bottom-color: var(--brown);
  font-weight: 700;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── TABLE ──────────────────────────────── */
table.info {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}
table.info th, table.info td {
  padding: 18px 24px;
  border: 1px solid var(--cream-dark);
  font-size: .9rem;
  vertical-align: top;
}
table.info th {
  width: 200px;
  background: #fdfaf5;
  font-weight: 600;
  color: var(--brown);
  font-family: var(--font-sans);
}

/* ─── CONTACT FORM ───────────────────────── */
.form-wrap {
  max-width: 600px;
  margin: 0 auto;
  background: var(--white);
  padding: 48px;
  border: 1px solid var(--cream-dark);
  border-radius: 4px;
}
.form-wrap label {
  display: block;
  font-family: var(--font-sans);
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--brown-mid);
  margin-bottom: 6px;
  margin-top: 20px;
}
.form-wrap input, .form-wrap textarea, .form-wrap select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--brown-pale);
  background: var(--cream);
  font-family: var(--font-serif);
  font-size: .9rem;
  color: var(--ink);
  border-radius: 2px;
  outline: none;
  transition: border-color .2s;
}
.form-wrap input:focus, .form-wrap textarea:focus { border-color: var(--sea); background: var(--white); }
.form-wrap textarea { height: 140px; resize: vertical; }
.btn-submit {
  display: block;
  width: 100%;
  margin-top: 28px;
  padding: 16px;
  background: var(--brown);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: .85rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background .2s;
}
.btn-submit:hover { background: var(--sea); }

/* ─── FOOTER MENU ────────────────────────── */
#footermenu {
  background: var(--brown);
  display: flex;
  justify-content: center;
  gap: 0;
  list-style: none;
  flex-wrap: wrap;
}
#footermenu li a {
  display: block;
  padding: 14px 28px;
  color: rgba(255,255,255,.8);
  font-family: var(--font-sans);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: color .2s;
}
#footermenu li a:hover { color: var(--white); text-decoration: none; }

footer {
  background: var(--ink);
  text-align: center;
  padding: 28px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
footer small, footer .pr {
  color: rgba(255,255,255,.45);
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .08em;
}
footer small a, footer .pr a { color: rgba(255,255,255,.45); }

/* ─── PAGE TOP BUTTON ────────────────────── */
.pagetop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 800;
}
.pagetop a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--brown);
  color: var(--white);
  border-radius: 50%;
  font-size: 1rem;
  transition: background .2s, transform .2s;
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
}
.pagetop a:hover { background: var(--sea); transform: translateY(-3px); text-decoration: none; }

/* ─── APP PAGE ───────────────────────────── */
.app-wrap {
  display: flex;
  gap: 60px;
  align-items: center;
  flex-wrap: wrap;
}
.app-wrap .app-img { flex: 1; min-width: 260px; }
.app-wrap .app-img img { border-radius: 16px; width: 100%; }
.app-wrap .app-text { flex: 1.2; min-width: 280px; }
.app-wrap ul {
  list-style: none;
  margin-top: 16px;
}
.app-wrap ul li {
  padding: 10px 0;
  border-bottom: 1px dotted var(--cream-dark);
  font-family: var(--font-sans);
  font-size: .88rem;
}
.app-wrap ul li::before { content: '✦ '; color: var(--sea); font-size: .7rem; }

/* ─── BLOG PAGE ──────────────────────────── */
article.card small {
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--brown-pale);
}

/* ─── INNER SECTION ──────────────────────── */
.inner-section {
  padding: 60px 40px;
  max-width: 900px;
  margin: 0 auto;
}

/* ─── RESPONSIVE ──────────────────────────── */
@media (max-width: 900px) {
  /* ヘッダー */
  header { padding: 0 16px; height: 60px; }
  #logo img { height: 34px; }

  /* ナビ：フルスクリーンオーバーレイ */
  #menubar {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(42,33,24,.97);
    z-index: 950;
    padding: 80px 40px 40px;
    overflow-y: auto;
  }
  #menubar.open { display: flex; align-items: flex-start; }
  #menubar nav ul { flex-direction: column; gap: 0; width: 100%; }
  #menubar nav ul li a {
    color: var(--cream);
    font-size: 1.15rem;
    padding: 16px 0;
    display: block;
    border-bottom: 1px solid rgba(255,255,255,.1);
    letter-spacing: .14em;
  }

  /* ハンバーガーボタン：常に右上に固定 */
  #menubar_hdr {
    display: flex;
    position: fixed;
    top: 17px;
    right: 16px;
    z-index: 1000;
    background: var(--white);
    padding: 6px;
    border-radius: 4px;
  }
  #menubar_hdr.active { background: transparent; }
  #menubar_hdr.active span { background: var(--cream); }
  #menubar_hdr.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  #menubar_hdr.active span:nth-child(2) { opacity: 0; }
  #menubar_hdr.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  /* ヒーロー */
  #mainimg-box { height: 60vw; max-height: 420px; }
  .hero-caption { left: 20px; bottom: 40px; }
  .hero-caption h2 { font-size: clamp(1.4rem, 6vw, 2.2rem); }

  /* コンテンツ */
  main.column { grid-template-columns: 1fr; }
  .sub { display: none; }
  #contents { padding: 32px 16px; }

  /* 内ページ */
  .page-hero { height: 220px; padding: 24px 20px; }
  .page-hero-title { font-size: 1.6rem; }

  /* フォーム */
  .form-wrap { padding: 24px 16px; }

  /* アプリページ */
  .app-wrap { flex-direction: column; }

  /* フッターメニュー */
  #footermenu { flex-direction: column; align-items: center; }
  #footermenu li a { padding: 10px 20px; }

  /* ページトップボタン */
  .pagetop { bottom: 16px; right: 16px; }
}