/* ==========================================================================
   株式会社マルタニ工業 コーポレートサイト 共通スタイル
   ========================================================================== */

:root {
  --color-primary: #1b3a5c;      /* 濃紺（信頼感） */
  --color-primary-dark: #12293f;
  --color-primary-light: #2c5580;
  --color-accent: #e07b1a;       /* 安全色オレンジ（差し色） */
  --color-accent-dark: #c2660f;
  --color-safety-green: #2e7d4f; /* 安全色グリーン（補助） */
  --color-bg: #f4f6f8;
  --color-bg-alt: #eef1f4;
  --color-white: #ffffff;
  --color-text: #2b2f33;
  --color-text-light: #5a6169;
  --color-border: #d7dde2;
  --font-base: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
}

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

a:hover {
  text-decoration: underline;
}

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

ul {
  padding-left: 1.2em;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  background-color: var(--color-white);
  border-bottom: 4px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.site-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.site-logo .company-name-ja {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.site-logo .company-name-sub {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.main-nav a {
  display: block;
  padding: 10px 16px;
  color: var(--color-text);
  font-weight: 600;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.main-nav a:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  text-decoration: none;
}

.main-nav a.active {
  color: var(--color-white);
  background-color: var(--color-primary);
}

.nav-toggle {
  display: none;
}

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--color-white);
  padding: 96px 0;
  min-height: 440px;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(18,41,63,0.92) 0%, rgba(27,58,92,0.78) 42%, rgba(27,58,92,0.35) 75%, rgba(27,58,92,0.15) 100%);
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.hero-text {
  max-width: 600px;
}

.hero-text h1 {
  font-size: 2.1rem;
  line-height: 1.5;
  margin: 0 0 16px;
  color: var(--color-white);
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

.hero-text p {
  font-size: 1.05rem;
  color: #f1f4f7;
  margin: 0 0 24px;
  text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: opacity 0.2s ease;
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-accent:hover {
  opacity: 0.88;
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-outline:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  text-decoration: none;
}

/* ---------- プレースホルダー画像枠 ---------- */
.photo-placeholder {
  background-color: #e2e6ea;
  border: 2px dashed #9aa4ad;
  border-radius: 6px;
  color: #6b737b;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 20px;
  min-height: 220px;
}

.photo-placeholder.small {
  min-height: 140px;
  font-size: 0.85rem;
}

.photo-placeholder.tall {
  min-height: 320px;
  font-size: 1.1rem;
}

/* 実写真が入った場合（img要素）はプレースホルダー用の枠線・背景を解除し、
   写真として正しく表示する */
img.photo-placeholder {
  background-color: transparent;
  border: none;
  padding: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Coming Soon（写真準備中）枠 ---------- */
.photo-placeholder.coming-soon {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #e2e6ea 100%);
  border: 2px dashed var(--color-accent);
  flex-direction: column;
  gap: 8px;
}

.coming-soon-badge {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 14px;
  border-radius: 20px;
  text-transform: uppercase;
}

.coming-soon-sub {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 600;
}

.photo-placeholder.small.coming-soon .coming-soon-badge {
  font-size: 0.62rem;
  padding: 3px 10px;
}

/* ---------- セクション共通 ---------- */
.section {
  padding: 56px 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-title {
  font-size: 1.6rem;
  color: var(--color-primary);
  text-align: center;
  margin: 0 0 8px;
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  background-color: var(--color-accent);
  margin: 14px auto 0;
}

.section-lead {
  text-align: center;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 40px;
}

/* ---------- ページ用ヒーロー（下層ページ） ---------- */
.page-hero {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 40px 0;
  text-align: center;
}

.page-hero h1 {
  margin: 0 0 8px;
  font-size: 1.8rem;
}

.breadcrumb {
  font-size: 0.85rem;
  color: #cfdbe6;
}

.breadcrumb a {
  color: #cfdbe6;
  text-decoration: underline;
}

/* ---------- カードグリッド（トップページ 強み） ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px 22px;
  text-align: center;
}

.card .card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}

.card h3 {
  color: var(--color-primary);
  margin: 0 0 10px;
}

.card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin: 0;
}

/* ---------- サービス一覧（トップページ） ---------- */
.service-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.service-preview-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.service-preview-item .photo-placeholder {
  border-radius: 0;
  border-width: 0 0 2px 0;
  min-height: 110px;
}

.service-preview-item .label {
  padding: 12px 14px;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  font-size: 0.95rem;
}

/* ---------- お知らせ・会社情報テーブル ---------- */
.info-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
}

.info-table th,
.info-table td {
  border: 1px solid var(--color-border);
  padding: 14px 18px;
  text-align: left;
  vertical-align: top;
}

.info-table th {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  width: 200px;
  white-space: nowrap;
}

.info-table td.unconfirmed {
  color: var(--color-accent-dark);
}

.tag-unconfirmed {
  display: inline-block;
  background-color: #fdecd8;
  color: var(--color-accent-dark);
  border: 1px solid var(--color-accent);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 6px;
}

.notice-box {
  background-color: #fdf6ec;
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  padding: 16px 20px;
  color: #6b4a1a;
  font-size: 0.9rem;
  margin: 24px 0;
}

/* ---------- サービス詳細（services.html） ---------- */
.service-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 28px;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
}

.service-block .service-photo {
  flex: 1 1 280px;
}

.service-block .service-photo .photo-placeholder {
  height: 100%;
  min-height: 220px;
  border-radius: 0;
}

.service-block .service-text {
  flex: 2 1 400px;
  padding: 26px 28px;
}

.service-block .service-number {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 10px;
}

.service-block h3 {
  color: var(--color-primary);
  margin: 0 0 12px;
  font-size: 1.25rem;
}

.service-block p {
  margin: 0;
  color: var(--color-text);
}

/* ---------- お問い合わせページ ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 640px;
  margin: 0 auto;
}

.contact-info-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px;
}

.contact-info-card h3 {
  color: var(--color-primary);
  margin-top: 0;
}

.contact-info-card .icon-line {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.contact-info-card .icon-line .icon {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
}

.map-placeholder {
  display: block;
  width: 100%;
  height: 260px;
  margin-top: 18px;
  border-radius: 6px;
  overflow: hidden;
}

/* ---------- フッター ---------- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: #cfd8e0;
  padding: 36px 0 20px;
  margin-top: 0;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
}

.footer-company h2 {
  color: var(--color-white);
  font-size: 1.15rem;
  margin: 0 0 10px;
}

.footer-company p {
  margin: 0 0 4px;
  font-size: 0.9rem;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav a {
  color: #cfd8e0;
  font-size: 0.9rem;
  line-height: 2.2;
}

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

.footer-bottom {
  text-align: center;
  font-size: 0.78rem;
  color: #93a1ac;
  margin-top: 28px;
  border-top: 1px solid #2a4763;
  padding-top: 16px;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 860px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .service-preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .main-nav ul {
    gap: 0;
    width: 100%;
  }
  .main-nav a {
    padding: 8px 10px;
    font-size: 0.9rem;
  }
  .hero-text h1 {
    font-size: 1.5rem;
  }
  .service-preview-grid {
    grid-template-columns: 1fr 1fr;
  }
  .service-block {
    flex-direction: column;
  }
  .info-table th {
    width: 120px;
    white-space: normal;
  }
  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .service-preview-grid {
    grid-template-columns: 1fr;
  }
  .main-nav a {
    padding: 8px 8px;
    font-size: 0.82rem;
  }
}