/* Google Fonts: Noto Sans JP */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap');

/* ========== CSS変数（カラーパレット） ========== */
:root {
  --color-primary: #1a3c6e;
  --color-accent:  #2a6dd9;
  --color-bg:      #f5f5f5;
  --color-text:    #333333;
  --color-white:   #ffffff;
}

/* ========== リセット・基本スタイル ========== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul,
ol {
  list-style: none;
}

/* コンテナ */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ========== ヘッダー ========== */
.site-header {
  background-color: var(--color-white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.header-logo img {
  height: 36px;
  width: auto;
}

/* PC用ナビゲーション */
.site-nav {
  display: none;
}

.site-nav ul {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

/* ハンバーガーボタン */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* モバイルメニュー */
.mobile-nav {
  display: none;
  background-color: var(--color-white);
  border-top: 1px solid #eee;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav ul {
  padding: 0.5rem 0;
}

.mobile-nav li {
  border-bottom: 1px solid #f0f0f0;
}

.mobile-nav a {
  display: block;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  color: var(--color-text);
  transition: background-color 0.2s;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  background-color: #f0f5ff;
  color: var(--color-primary);
}

/* ========== ページヒーロー（各ページ上部） ========== */
.page-hero {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 3rem 0;
  text-align: center;
}

.page-hero h1 {
  font-size: 1.75rem;
  font-weight: 700;
}

.page-hero p {
  margin-top: 0.5rem;
  opacity: 0.85;
}

/* ========== セクション共通 ========== */
main {
  min-height: 60vh;
}

section {
  padding: 3rem 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color-accent);
}

/* ボタン */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

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

.btn-primary:hover {
  background-color: #1f5ab8;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-white);
  color: var(--color-white);
}

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

/* ========== ホームページ：ヒーローエリア ========== */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2a4f8c 60%, var(--color-accent) 100%);
  color: var(--color-white);
  padding: 5rem 0 4rem;
  text-align: center;
}

.hero-tagline {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1.25rem;
}

.hero-desc {
  font-size: 1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ========== ホームページ：サービスカード ========== */
.service-cards {
  display: grid;
  gap: 1.5rem;
}

.service-card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
  border-top: 4px solid var(--color-accent);
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.95rem;
  color: #555;
}

/* ========== ホームページ：会社紹介プレビュー ========== */
.about-preview {
  background-color: var(--color-white);
}

.about-content p {
  margin-bottom: 1.5rem;
  line-height: 1.9;
}

/* ========== サービスページ ========== */
.service-detail {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.service-detail h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.service-detail p {
  color: #555;
  line-height: 1.9;
}

.service-badge {
  display: inline-block;
  background-color: #e8f0fb;
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
}

.service-cta {
  text-align: center;
  padding: 2.5rem 2rem;
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.service-cta p {
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  color: var(--color-text);
}

/* ========== 会社概要ページ ========== */
.company-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.company-table th,
.company-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid #f0f0f0;
  font-size: 0.95rem;
  vertical-align: top;
}

.company-table th {
  width: 40%;
  font-weight: 700;
  color: var(--color-primary);
  background-color: #f7f9fc;
  white-space: nowrap;
}

.company-table tr:last-child th,
.company-table tr:last-child td {
  border-bottom: none;
}

/* ========== リクルートページ ========== */
.recruit-notice {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.recruit-notice p {
  font-size: 1.05rem;
  color: #555;
  margin-bottom: 0.75rem;
}

.recruit-notice p:last-child {
  margin-bottom: 0;
}

/* ========== お問い合わせフォーム ========== */
.contact-notice {
  background-color: #fff8f0;
  border-left: 4px solid #e67e22;
  padding: 1rem 1.25rem;
  border-radius: 0 4px 4px 0;
  font-size: 0.9rem;
  color: #7d4e00;
  margin-bottom: 2rem;
}

.contact-form {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.form-group .required {
  color: #e53e3e;
  margin-left: 0.3rem;
  font-size: 0.78rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background-color: var(--color-white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(42, 109, 217, 0.1);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}

/* チェックボックスグループ */
.form-group-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.form-group-checkbox input[type="checkbox"] {
  margin-top: 0.25rem;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.form-group-checkbox label {
  font-size: 0.9rem;
  cursor: pointer;
  line-height: 1.6;
}

.form-group-checkbox label a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* バリデーションエラー */
.form-error {
  display: none;
  color: #e53e3e;
  font-size: 0.85rem;
  margin-top: 0.35rem;
}

/* 送信エラー */
.form-submit-error {
  display: none;
  background-color: #fff5f5;
  border: 1px solid #e53e3e;
  color: #c53030;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}

/* 送信ボタン */
.btn-submit {
  width: 100%;
  padding: 0.9rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-submit:hover {
  background-color: #14305a;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========== プライバシーポリシーページ ========== */
.privacy-content {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.privacy-content h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2rem 0 0.75rem;
}

.privacy-content h2:first-child {
  margin-top: 0;
}

.privacy-content p,
.privacy-content li {
  font-size: 0.95rem;
  line-height: 1.9;
  color: #555;
}

.privacy-content ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-top: 0.5rem;
}

.privacy-content li {
  margin-bottom: 0.25rem;
}

.privacy-updated {
  font-size: 0.85rem;
  color: #888;
  margin-top: 2rem;
  text-align: right;
}

/* ========== サンクスページ ========== */
.thanks-section {
  text-align: center;
  padding: 4rem 0;
}

.thanks-icon {
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.thanks-icon svg {
  width: 5rem;
  height: 5rem;
}

.thanks-section h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.thanks-section p {
  color: #555;
  margin-bottom: 0.5rem;
}

.thanks-section .btn {
  margin-top: 2rem;
}

/* ========== フッター ========== */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 2.5rem 0;
  margin-top: 4rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* ========== レスポンシブ：768px以上 ========== */
@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .site-nav {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .service-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .company-table th {
    width: 25%;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ========== レスポンシブ：1024px以上 ========== */
@media (min-width: 1024px) {
  .hero {
    padding: 7rem 0 6rem;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .contact-form {
    max-width: 720px;
  }
}