/* =========================================================
   株式会社友栄 コーポレートサイト 共通スタイル
   イメージカラー：暖色系（ロゴの深紅をベースに）
   ========================================================= */

:root {
  --color-primary: #b0201f;       /* ロゴ深紅 */
  --color-primary-dark: #7f1413;
  --color-primary-light: #d94a3d;
  --color-accent: #e8963a;        /* 暖色アクセント（オレンジ） */
  --color-accent-light: #f6b25e;
  --color-warm-bg: #fdf6f1;       /* 温かみのある背景 */
  --color-warm-bg2: #fbeee6;
  --color-text: #2b2321;
  --color-text-light: #6b5f5a;
  --color-white: #ffffff;
  --color-border: #ece2da;
  --color-dark: #3a2c28;
  --shadow-sm: 0 2px 8px rgba(120, 40, 20, 0.06);
  --shadow-md: 0 8px 30px rgba(120, 40, 20, 0.10);
  --shadow-lg: 0 16px 48px rgba(120, 40, 20, 0.14);
  --radius: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
  --header-h: 88px;
  --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  color: var(--color-text);
  line-height: 1.8;
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================== ヘッダー ===================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo img { height: 48px; width: auto; }

.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a,
.main-nav > ul > li > span {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  white-space: nowrap;
  border-radius: 8px;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li > span:hover { color: var(--color-primary); background: var(--color-warm-bg2); }

/* ドロップダウン */
.has-dropdown .dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  min-width: 240px;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}
.has-dropdown .dropdown li { width: 100%; }
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown li a {
  display: block;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
}
.dropdown li a:hover { background: var(--color-warm-bg2); color: var(--color-primary); }

.header-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 12px 22px !important;
  border-radius: 999px !important;
  font-weight: 700;
}
.header-cta:hover { background: var(--color-primary-dark) !important; }

.header-tel {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.2;
  margin-left: 8px;
}
.header-tel .tel-num { font-size: 1.15rem; font-weight: 800; color: var(--color-primary); }
.header-tel .tel-label { font-size: 0.68rem; color: var(--color-text-light); }

/* ハンバーガー */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 26px; height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== 汎用セクション ===================== */
main { padding-top: var(--header-h); }

.section { padding: 90px 0; }
.section-warm { background: var(--color-warm-bg); }

.section-head { text-align: center; margin-bottom: 56px; }
.section-head .en {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.section-head h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.02em;
}
.section-head h2::after {
  content: '';
  display: block;
  width: 56px; height: 3px;
  background: var(--color-accent);
  margin: 18px auto 0;
  border-radius: 2px;
}
.section-head p { margin-top: 18px; color: var(--color-text-light); }

/* ボタン */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: #d5822a; transform: translateY(-2px); }
.btn-outline { background: transparent; border: 2px solid var(--color-primary); color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-lg { padding: 20px 48px; font-size: 1.08rem; }

/* ===================== ページヒーロー（下層） ===================== */
.page-hero {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--hero-img);
  background-size: cover;
  background-position: center;
  opacity: 0.22;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .en { font-size: 0.8rem; letter-spacing: 0.25em; opacity: 0.85; font-weight: 700; }
.page-hero h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); font-weight: 800; margin-top: 8px; }

/* パンくず */
.breadcrumb { background: var(--color-warm-bg); padding: 14px 0; font-size: 0.82rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb li:not(:last-child)::after { content: '›'; margin-left: 8px; color: #c9b8ae; }

/* ===================== カード ===================== */
.card-grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--color-border);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

/* 強み・特徴カード */
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  height: 100%;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature-card .icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.6rem;
  margin-bottom: 20px;
}
.feature-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.feature-card p { color: var(--color-text-light); font-size: 0.94rem; }

/* ===================== フォーム ===================== */
.form-wrap {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  padding: 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 0.94rem;
}
.form-group label .req {
  background: var(--color-primary);
  color: #fff;
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
  vertical-align: middle;
}
.form-group label .opt {
  background: #b3a99f;
  color: #fff;
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
  vertical-align: middle;
}
.form-control {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  background: #fdfaf7;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(176, 32, 31, 0.1);
}
textarea.form-control { resize: vertical; min-height: 140px; }
.form-submit { text-align: center; margin-top: 32px; }
.form-note { font-size: 0.82rem; color: var(--color-text-light); text-align: center; margin-top: 16px; }
.form-error { color: var(--color-primary); font-size: 0.82rem; margin-top: 6px; display: none; }
.form-group.invalid .form-control { border-color: var(--color-primary); }
.form-group.invalid .form-error { display: block; }

.form-success {
  display: none;
  background: #eaf6ec;
  border: 1.5px solid #93c79a;
  color: #2e6b36;
  padding: 20px;
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: 24px;
  font-weight: 600;
}

.form-error-msg {
  display: none;
  background: #fdeceb;
  border: 1.5px solid #e5a19d;
  color: var(--color-primary);
  padding: 18px 20px;
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: 24px;
  font-weight: 600;
  font-size: 0.92rem;
}

/* ===================== CTAバナー ===================== */
.cta-banner {
  background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary-light));
  color: #fff;
  text-align: center;
  padding: 72px 0;
}
.cta-banner h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); font-weight: 800; margin-bottom: 16px; }
.cta-banner p { margin-bottom: 32px; opacity: 0.95; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-banner .btn-primary { background: #fff; color: var(--color-primary); }
.cta-banner .btn-primary:hover { background: var(--color-warm-bg); }
.cta-banner .btn-outline { border-color: #fff; color: #fff; }
.cta-banner .btn-outline:hover { background: #fff; color: var(--color-primary); }

/* ===================== フッター ===================== */
.site-footer {
  background: var(--color-dark);
  color: #e4d8d2;
  padding: 64px 0 0;
}
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-logo { background: #fff; display: inline-block; padding: 12px 16px; border-radius: 10px; margin-bottom: 20px; }
.footer-logo img { height: 40px; }
.footer-company p { font-size: 0.88rem; color: #b9aca6; margin-bottom: 6px; }
.footer-tel { font-size: 1.5rem; font-weight: 800; color: #fff; margin: 12px 0 4px; }
.footer-col h4 { font-size: 1rem; margin-bottom: 18px; color: #fff; position: relative; padding-left: 14px; }
.footer-col h4::before { content: ''; position: absolute; left: 0; top: 6px; width: 4px; height: 16px; background: var(--color-accent); border-radius: 2px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.88rem; color: #cdbfb9; }
.footer-col ul li a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: #a89b95;
}
.footer-bottom a:hover { color: #fff; }

/* フェードイン */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===================== レスポンシブ ===================== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .header-tel { display: none; }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: min(320px, 85vw);
    height: calc(100vh - var(--header-h));
    background: #fff;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: var(--transition);
    overflow-y: auto;
    padding: 16px;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav > ul > li > a,
  .main-nav > ul > li > span { padding: 16px 12px; border-bottom: 1px solid var(--color-border); }
  .has-dropdown .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--color-warm-bg);
    display: none;
    margin: 0 0 8px;
  }
  .has-dropdown.open .dropdown { display: block; }
  .header-cta { text-align: center; margin-top: 12px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .form-wrap { padding: 28px 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}