/* ============================================
   株式会社Departure - コーポレートサイト CSS
   ホワイト＆ネイビー基調・信頼感重視デザイン
============================================ */

/* ----- CSS変数 ----- */
:root {
  --color-navy: #1a2e4a;
  --color-navy-dark: #0f1e32;
  --color-navy-mid: #1e3a5f;
  --color-navy-light: #2a4a75;
  --color-accent: #2c5f8a;
  --color-accent-hover: #1e4a6e;
  --color-gold: #b8973e;
  --color-white: #ffffff;
  --color-bg: #f9fafb;
  --color-bg-alt: #f0f4f8;
  --color-text: #1a2e4a;
  --color-text-mid: #3d5166;
  --color-text-light: #6b7f96;
  --color-border: #d6e0eb;
  --color-border-light: #e8edf3;

  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-serif: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;

  --radius: 4px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 4px rgba(26, 46, 74, 0.08);
  --shadow-md: 0 4px 16px rgba(26, 46, 74, 0.10);
  --shadow-lg: 0 8px 32px rgba(26, 46, 74, 0.13);

  --transition: 0.25s ease;
  --max-width: 1100px;
}

/* ----- リセット・ベース ----- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

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

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

ul {
  list-style: none;
}

/* ----- ユーティリティ ----- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.pc-only { display: inline; }
.sp-only { display: none; }

/* ----- ボタン ----- */
.btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background: var(--color-navy);
  color: var(--color-white);
  border: 2px solid var(--color-navy);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  font-family: var(--font-sans);
}

.btn-primary:hover {
  background: var(--color-navy-dark);
  border-color: var(--color-navy-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.8);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.15);
}

.btn-full {
  width: 100%;
  text-align: center;
  justify-content: center;
}

/* ============================================
   ヘッダー
============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo a {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-main {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.05em;
  font-family: 'Georgia', serif;
}

.logo-sub {
  font-size: 0.65rem;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
  font-weight: 400;
}

.global-nav ul {
  display: flex;
  align-items: center;
  gap: 36px;
}

.global-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-mid);
  letter-spacing: 0.05em;
  position: relative;
  padding-bottom: 4px;
}

.global-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-navy);
  transition: width var(--transition);
}

.global-nav a:hover {
  color: var(--color-navy);
}

.global-nav a:hover::after {
  width: 100%;
}

.nav-ec {
  padding: 8px 20px !important;
  background: var(--color-navy) !important;
  color: var(--color-white) !important;
  border-radius: var(--radius) !important;
  font-weight: 500 !important;
}

.nav-ec::after {
  display: none !important;
}

.nav-ec:hover {
  background: var(--color-navy-dark) !important;
  color: var(--color-white) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-navy);
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

.hamburger.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}
.hamburger.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ============================================
   ヒーローセクション
============================================ */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy-mid) 55%, var(--color-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 40px 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Ccircle cx='30' cy='30' r='1' fill='rgba(255,255,255,0.04)'/%3E%3C/svg%3E") repeat;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 760px;
}

.hero-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.18em;
  margin-bottom: 20px;
  font-weight: 400;
}

.hero-catch {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.45;
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}

.hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
  line-height: 1.9;
  margin-bottom: 44px;
  font-weight: 300;
}

.hero-deco {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-white);
  clip-path: ellipse(55% 100% at 50% 100%);
}

/* ============================================
   信頼バー
============================================ */
.trust-bar {
  background: var(--color-white);
  padding: 60px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.trust-list li {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 28px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.trust-list li:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-navy-light);
}

.trust-list i {
  font-size: 1.8rem;
  color: var(--color-navy);
}

.trust-list span {
  font-size: 0.82rem;
  color: var(--color-text-mid);
  line-height: 1.6;
  font-weight: 500;
}

/* ============================================
   共通セクション
============================================ */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--color-navy);
  border-radius: 2px;
}

.section-desc {
  font-size: 0.97rem;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-top: 24px;
}

/* ============================================
   事業内容
============================================ */
.business {
  background: var(--color-bg);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.business-card {
  background: var(--color-white);
  padding: 44px 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.business-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-navy);
}

.business-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-navy-light);
}

.business-icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.business-icon i {
  font-size: 1.4rem;
  color: var(--color-navy);
}

.business-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 14px;
  line-height: 1.5;
}

.business-card p {
  font-size: 0.9rem;
  color: var(--color-text-mid);
  line-height: 1.85;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
  transition: color var(--transition), gap var(--transition);
}

.card-link:hover {
  color: var(--color-navy);
  border-color: var(--color-navy);
  gap: 10px;
}

/* ============================================
   ECバナー
============================================ */
.ec-banner {
  background: linear-gradient(135deg, var(--color-navy-mid) 0%, var(--color-navy-light) 100%);
  padding: 80px 0;
}

.ec-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.ec-text {
  flex: 1;
}

.ec-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.ec-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.ec-desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.85;
  margin-bottom: 32px;
}

.ec-icon-wrap {
  flex-shrink: 0;
}

.ec-icon-circle {
  width: 140px;
  height: 140px;
  border: 3px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
}

.ec-icon-circle i {
  font-size: 3rem;
  color: rgba(255,255,255,0.85);
}

/* ============================================
   会社情報
============================================ */
.company {
  background: var(--color-white);
}

.company-wrap {
  max-width: 780px;
  margin: 0 auto;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table th,
.company-table td {
  padding: 20px 28px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.93rem;
  line-height: 1.8;
  vertical-align: top;
}

.company-table th {
  width: 32%;
  font-weight: 600;
  color: var(--color-navy);
  background: var(--color-bg);
  white-space: nowrap;
}

.company-table td {
  color: var(--color-text-mid);
}

.company-table tr:first-child th,
.company-table tr:first-child td {
  border-top: 2px solid var(--color-navy);
}

/* ============================================
   お問い合わせ
============================================ */
.contact {
  background: var(--color-bg);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  padding: 40px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-item i {
  font-size: 1.2rem;
  color: var(--color-navy);
  margin-top: 4px;
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-value {
  font-size: 0.93rem;
  color: var(--color-accent);
  font-weight: 500;
  word-break: break-all;
}

.contact-value:hover {
  color: var(--color-navy);
}

.contact-note {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

/* フォーム */
.contact-form {
  background: var(--color-white);
  padding: 44px 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.required {
  font-size: 0.7rem;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 2px 7px;
  border-radius: 2px;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.93rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  line-height: 1.6;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(44, 95, 138, 0.1);
}

.form-group input.is-error,
.form-group textarea.is-error {
  border-color: #c0392b;
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.error-msg {
  display: block;
  font-size: 0.78rem;
  color: #c0392b;
  margin-top: 5px;
  min-height: 1.2em;
}

.form-submit {
  margin-top: 8px;
}

.form-submit .btn-primary {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 1rem;
  padding: 16px;
}

.form-result {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  text-align: center;
  display: none;
}

.form-result.success {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
  display: block;
}

.form-result.error {
  background: #ffeaea;
  color: #c62828;
  border: 1px solid #ef9a9a;
  display: block;
}

/* ============================================
   フッター
============================================ */
.site-footer {
  background: var(--color-navy-dark);
  color: rgba(255,255,255,0.85);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 60px 0 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  font-size: 1.8rem;
  font-weight: 700;
  font-family: 'Georgia', serif;
  color: var(--color-white);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.footer-tagline {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
  font-family: var(--font-serif);
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: flex-end;
}

.footer-nav a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}

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

.footer-info {
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-address p {
  font-size: 0.82rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}

.footer-address p strong {
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  font-size: 0.88rem;
}

.footer-address a {
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}

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

.footer-bottom {
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
}

/* ============================================
   スクロールトップボタン
============================================ */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-navy);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
  z-index: 999;
}

.scroll-top.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-navy-dark);
}

/* ============================================
   フェードインアニメーション
============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ============================================
   レスポンシブ
============================================ */
@media (max-width: 1024px) {
  .container {
    padding: 0 28px;
  }
  .header-inner {
    padding: 0 28px;
  }
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .pc-only { display: none; }
  .sp-only { display: inline; }

  /* ヘッダー */
  .hamburger {
    display: flex;
  }

  .global-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
  }

  .global-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .global-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 12px 0;
  }

  .global-nav li {
    width: 100%;
  }

  .global-nav a {
    display: block;
    padding: 16px 32px;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border-light);
  }

  .global-nav a::after {
    display: none;
  }

  .nav-ec {
    margin: 16px 32px !important;
    padding: 12px 20px !important;
    display: block !important;
    text-align: center !important;
  }

  /* ヒーロー */
  .hero {
    padding: 100px 28px 60px;
    min-height: 90vh;
  }

  /* 信頼バー */
  .trust-bar {
    padding: 40px 0;
  }

  .trust-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* セクション共通 */
  .section {
    padding: 72px 0;
  }

  /* 事業内容 */
  .business-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* EC */
  .ec-banner {
    padding: 60px 0;
  }

  .ec-inner {
    flex-direction: column;
    text-align: center;
    gap: 36px;
  }

  /* 会社情報 */
  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
    padding: 12px 20px;
  }

  .company-table th {
    padding-bottom: 6px;
    border-bottom: none;
    background: var(--color-bg);
  }

  .company-table td {
    padding-top: 6px;
    padding-bottom: 16px;
  }

  /* お問い合わせ */
  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-info,
  .contact-form {
    padding: 28px 24px;
  }

  /* フッター */
  .footer-top {
    flex-direction: column;
    gap: 28px;
    padding: 44px 0 32px;
  }

  .footer-nav ul {
    justify-content: flex-start;
  }

  .scroll-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 480px) {
  .container,
  .header-inner,
  .footer-inner {
    padding: 0 20px;
  }

  .trust-list {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .trust-list li {
    padding: 20px 12px;
  }

  .business-card {
    padding: 32px 24px;
  }

  .section {
    padding: 56px 0;
  }
}