/* スキップリンク（アクセシビリティ） */
.skip-link { position: absolute; top: -100%; left: 1rem; background: var(--color-accent, #6B705C); color: #fff; padding: 0.5rem 1rem; border-radius: 0 0 4px 4px; font-size: 0.9rem; z-index: 9999; text-decoration: none; }
.skip-link:focus { top: 0; }

/*
  スタイル変数 (Theme Variables)
  和モダン・落ち着いたお洒落な雰囲気を演出するためのカラーとフォント設定
*/
:root {
    /* カラーパレット */
    --color-text-main: #333333;
    /* メインテキスト（墨色） */
    --color-text-muted: #666666;
    /* 少し薄いテキスト */
    --color-bg-main: #FAFAFA;
    /* メイン背景（少し温かみのある白） */
    --color-bg-section: #F2EFEA;
    /* セクション背景（薄い亜麻色） */
    --color-accent: #6B705C;
    /* アクセントカラー（落ち着いた緑、和モダン） */
    --color-accent-hover: #A5A58D;
    /* アクセントカラーのホバー時 */
    --color-white: #FFFFFF;
    --color-border: #E0E0E0;

    /* フォント（瓦ゴシックに近い Zen Kaku Gothic Antique） */
    --font-family-base: "Zen Kaku Gothic Antique", "Hiragino Kaku Gothic ProN", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;
    --font-family-serif: "Zen Kaku Gothic Antique", "Hiragino Kaku Gothic ProN", sans-serif;

    /* スペーシング */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 1rem;
    /* 16px */
    --spacing-lg: 2rem;
    /* 32px */
    --spacing-xl: 4rem;
    /* 64px */
}

/* 
  ベーススタイル (Base Styles) 
*/
body {
    font-family: var(--font-family-base);
    color: var(--color-text-main);
    background-color: var(--color-bg-main);
    line-height: 1.8;
    letter-spacing: 0.05em;
    /* 文字間隔を少し開けてゆったりと */
}

/* コンテナ（コンテンツの最大幅を制限し、中央寄せにする） */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* リンクアニメーション */
a {
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-accent);
}

/* 見出しの共通スタイル */
.section-title {
    font-family: var(--font-family-serif);
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-weight: normal;
    color: var(--color-accent);
}

.section-title::after {
    content: "";
    display: block;
    width: 40px;
    height: 2px;
    background-color: var(--color-accent);
    margin: var(--spacing-md) auto 0;
}

/* セクションの余白 */
.section-padding {
    padding: var(--spacing-xl) 0;
}

/* 
  ヘッダーとナビゲーション (共通パーツ) 
*/
.header {
    background-color: var(--color-white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    /* うっすらとした影 */
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-family-serif);
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 0.1em;
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-list a {
    font-size: 0.95rem;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
}

/* ハンバーガーメニューボタン（PC時は非表示） */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-sm);
    z-index: 200;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    margin-bottom: 5px;
    transition: all 0.3s;
}

.hamburger span:last-child {
    margin-bottom: 0;
}

/* ハンバーガーが開いた時のボタンの×印 */
.hamburger.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

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

/* レスポンシブ (スマホ表示: 768px以下) */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-list {
        display: none;
        /* 初期状態は非表示 */
        position: absolute;
        top: 80px;
        /* ヘッダーの高さ */
        left: 0;
        width: 100%;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md) 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    }

    .nav-list.is-active {
        display: flex;
        /* ボタンを押したら表示 */
    }

    .nav-list a {
        display: block;
        text-align: center;
        padding: var(--spacing-md);
    }
}

/* 
  フッター (共通パーツ) 
*/
.footer {
    background-color: var(--color-text-main);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-text {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ===== ページ共通・固有スタイル ===== */

/* ページヘッダー共通 */
.page-header { background-color: var(--color-bg-section); padding: var(--spacing-xl) 0; text-align: center; }
/* 山岳背景付きページヘッダー（Services / Works / Contact） */
.page-header--yama {
    background-image: linear-gradient(rgba(255,255,255,0.72), rgba(255,255,255,0.72)), url('/images/page-header.jpg');
    background-size: cover;
    background-position: center 40%;
}
.page-title { font-family: var(--font-family-serif); font-size: 2.5rem; color: var(--color-accent); margin-bottom: var(--spacing-sm); }
.page-subtitle { color: var(--color-text-muted); font-size: 0.95rem; }

/* index.html 固有 */
.hero { background-image: url('../images/hero.jpg'); background-color: #2a3f5f; background-size: cover; background-position: center; height: 70vh; min-height: 500px; display: flex; align-items: center; justify-content: center; text-align: center; position: relative; }
.hero::before { content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.3); }
.hero-content { position: relative; z-index: 1; color: var(--color-white); }
.hero-title { font-family: var(--font-family-serif); font-size: 3rem; margin-bottom: var(--spacing-md); text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5); }
.hero-subtitle { font-size: 1.2rem; letter-spacing: 0.1em; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5); }
.service-category-block { margin-top: var(--spacing-lg); }
.service-category-block + .service-category-block { margin-top: var(--spacing-xl); }
.service-category-label { font-family: var(--font-family-serif); font-size: 1rem; color: var(--color-white); background-color: var(--color-accent); display: inline-block; padding: 0.3rem 1rem; border-radius: 4px; margin-bottom: var(--spacing-md); }
.service-grid { display: flex; gap: var(--spacing-md); }
.service-card { flex: 1; background-color: var(--color-white); padding: var(--spacing-lg); border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); border-top: 3px solid var(--color-accent); transition: transform 0.3s ease, box-shadow 0.3s ease; text-align: center; text-decoration: none; display: block; cursor: pointer; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 8px 16px rgba(0,0,0,0.1); }
.service-card h3 { font-family: var(--font-family-serif); color: var(--color-accent); margin-bottom: 0.6rem; font-size: 1rem; }
.service-card p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.7; text-align: left; }
.instructor { background-color: var(--color-bg-section); }
.instructor-info .section-title::after { margin-left: 0; }
.instructor-flex { display: flex; align-items: center; gap: var(--spacing-xl); }
.instructor-image { flex: 1; max-width: 250px; border-radius: 50% 50% 0 0; overflow: hidden; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.instructor-image img { width: 100%; height: auto; object-fit: cover; object-position: top; display: block; }
.instructor-info { flex: 1; }
.instructor-info h3 { font-family: var(--font-family-serif); font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
.flow-steps { display: flex; gap: 0; margin-top: var(--spacing-lg); position: relative; counter-reset: step-counter; }
.flow-step { flex: 1; text-align: center; padding: var(--spacing-lg) var(--spacing-md); position: relative; }
.flow-step::after { content: "▶"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); color: var(--color-accent); font-size: 1.2rem; z-index: 1; }
.flow-step:last-child::after { display: none; }
.flow-step-number { display: flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 50%; background-color: var(--color-accent); color: var(--color-white); font-size: 1.2rem; font-weight: bold; margin: 0 auto var(--spacing-sm); }
.flow-step h3 { font-family: var(--font-family-serif); color: var(--color-accent); font-size: 1rem; margin-bottom: 0.4rem; }
.flow-step p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.5; }

/* services.html 固有 */
.service-category { margin-bottom: var(--spacing-xl); }
.service-category-title { font-family: var(--font-family-serif); font-size: 1.5rem; color: var(--color-white); background-color: var(--color-accent); padding: 0.6rem 1.4rem; border-radius: 6px; margin-bottom: var(--spacing-lg); display: inline-block; }
.service-cards { display: flex; flex-direction: column; gap: var(--spacing-md); }
.service-card-page { background-color: var(--color-white); border: 1px solid var(--color-border); border-radius: 10px; padding: var(--spacing-lg); box-shadow: 0 2px 8px rgba(0,0,0,0.05); display: flex; justify-content: space-between; align-items: flex-start; gap: var(--spacing-lg); }
.service-card-body { flex: 1; }
.service-card-body h3 { font-family: var(--font-family-serif); font-size: 1.15rem; color: var(--color-text-main); margin-bottom: 0.5rem; }
.service-card-body p { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.7; }
.service-card-price { text-align: right; flex-shrink: 0; min-width: 180px; }
.price-label { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 0.2rem; }
.price-value { font-size: 1.4rem; font-weight: bold; color: var(--color-accent); white-space: nowrap; }
.price-unit { font-size: 0.9rem; font-weight: normal; color: var(--color-text-muted); }

/* works.html 固有 */
.works-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2rem; margin-top: var(--spacing-lg); }
.work-card { background-color: var(--color-white); border-radius: 8px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); display: flex; flex-direction: column; }
.work-card-header { background-color: var(--color-accent); padding: 1rem 1.4rem; display: flex; align-items: center; gap: 0.8rem; }
.work-tag { display: inline-block; background-color: rgba(255,255,255,0.2); color: var(--color-white); font-size: 0.75rem; padding: 3px 10px; border-radius: 20px; letter-spacing: 0.05em; }
.work-card-body { padding: 1.4rem; flex: 1; display: flex; flex-direction: column; gap: 1rem; }
.work-client { font-size: 0.85rem; color: var(--color-text-muted); }
.work-card h3 { font-family: var(--font-family-serif); font-size: 1.05rem; color: var(--color-heading); line-height: 1.6; }
.work-detail { display: flex; flex-direction: column; gap: 0.8rem; }
.work-row { display: flex; gap: 0.6rem; font-size: 0.88rem; line-height: 1.7; }
.work-row-label { flex-shrink: 0; width: 4rem; color: var(--color-accent); font-weight: 500; }
.work-row-text { color: var(--color-text); }
.result-highlight { background-color: var(--color-bg-section); border-left: 3px solid var(--color-accent); padding: 0.6rem 1rem; border-radius: 0 4px 4px 0; font-size: 0.88rem; color: var(--color-accent); font-weight: 500; margin-top: auto; }
.works-note { text-align: center; color: var(--color-text-muted); font-size: 0.82rem; margin-top: var(--spacing-lg); }

/* contact.html 固有 */
.contact-container { max-width: 640px; margin: 0 auto; background-color: var(--color-white); padding: var(--spacing-xl); border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); }
.contact-desc { margin-bottom: var(--spacing-lg); line-height: 1.8; text-align: center; }
.form-group { margin-bottom: var(--spacing-md); }
.form-group label { display: block; font-size: 0.9rem; font-weight: 500; margin-bottom: 0.4rem; color: var(--color-text-main); }
.form-group label .required { color: #c0392b; margin-left: 4px; font-size: 0.8rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--color-border); border-radius: 4px; font-family: var(--font-family-base); font-size: 1rem; color: var(--color-text-main); background-color: var(--color-bg-main); transition: border-color 0.2s; box-sizing: border-box; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; border-color: var(--color-accent); background-color: var(--color-white); }
.form-group textarea { resize: vertical; min-height: 150px; line-height: 1.7; }
.btn-submit { display: block; width: 100%; background-color: var(--color-accent); color: var(--color-white); padding: 16px; font-size: 1.05rem; font-family: var(--font-family-base); font-weight: 500; border: none; border-radius: 4px; letter-spacing: 0.1em; cursor: pointer; transition: background-color 0.3s; margin-top: var(--spacing-lg); }
.btn-submit:hover { background-color: var(--color-accent-hover); }
.contact-note { margin-top: var(--spacing-md); font-size: 0.8rem; color: var(--color-text-muted); text-align: center; line-height: 1.6; }

/* privacy.html 固有 */
.privacy-container { max-width: 800px; margin: 0 auto; background-color: var(--color-white); padding: var(--spacing-xl); border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); line-height: 1.8; color: var(--color-text-main); }
.privacy-container h2 { font-size: 1.25rem; color: var(--color-accent); margin-top: 2rem; margin-bottom: 0.8rem; border-bottom: 1px solid var(--color-border); padding-bottom: 0.4rem; }
.privacy-container h2:first-of-type { margin-top: 2rem; }
.privacy-container p { margin-bottom: 1rem; }
.privacy-container ul { list-style-type: disc; margin-left: 1.5rem; margin-bottom: 1rem; }
.privacy-container li { margin-bottom: 0.4rem; }

/* news.html 固有 */
.news-list { max-width: 800px; margin: 0 auto; }
.news-item { display: flex; border-bottom: 1px solid var(--color-border); padding: var(--spacing-md) 0; gap: var(--spacing-md); transition: background-color 0.3s ease; }
.news-item:hover { background-color: var(--color-bg-section); }
.news-date { font-family: "Helvetica Neue", Arial, sans-serif; color: var(--color-text-muted); min-width: 120px; }
.news-tag { background-color: var(--color-accent); color: var(--color-white); font-size: 0.8rem; padding: 2px 8px; border-radius: 4px; white-space: nowrap; height: fit-content; }
.news-content { flex: 1; font-weight: 500; }

/* レスポンシブ追加分 */
@media (max-width: 768px) {
    .service-grid { flex-direction: column; gap: var(--spacing-sm); }
    .instructor-flex { flex-direction: column; text-align: center; }
    .hero-title { font-size: 2rem; }
    .flow-steps { flex-direction: column; }
    .flow-step::after { content: "▼"; right: auto; left: 50%; top: auto; bottom: -16px; transform: translateX(-50%); }
    .works-grid { grid-template-columns: 1fr; }
    .page-title { font-size: 1.8rem; }
}
@media (max-width: 640px) {
    .service-card-page { flex-direction: column; gap: var(--spacing-sm); }
    .service-card-price { text-align: left; min-width: auto; }
}
@media (max-width: 600px) {
    .news-item { flex-direction: column; gap: var(--spacing-sm); }
}

/* インラインスタイルの置き換え用汎用クラス */
.bg-section { background-color: var(--color-bg-section); }
.bg-main { background-color: var(--color-bg-main); }
.text-center { text-align: center; }
.text-left { text-align: left; }
.font-medium { font-weight: 500; }
.font-large { font-size: 1.2rem; line-height: 2; letter-spacing: 0.08em; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.mb-sm { margin-bottom: 0.5rem; }
.mb-md { margin-bottom: 1rem; }
.mb-lg { margin-bottom: var(--spacing-lg); }
.btn-primary { display: inline-block; background-color: var(--color-accent); color: var(--color-white); padding: 16px 40px; font-size: 1.1rem; border-radius: 4px; letter-spacing: 0.1em; transition: background-color 0.3s; }
.btn-primary:hover { background-color: var(--color-accent-hover); }
.footer-links { text-align: center; margin-bottom: 1rem; }
.footer-link { color: var(--color-white); text-decoration: underline; font-size: 0.9rem; }
.footer-legal-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem 1.5rem; margin-bottom: 1rem; }

/* 特定商取引法テーブル */
.tokushoho-table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; }
.tokushoho-table th, .tokushoho-table td { padding: 0.9rem 1rem; border: 1px solid #ddd; vertical-align: top; line-height: 1.7; font-size: 0.95rem; }
.tokushoho-table th { background-color: var(--color-bg-section); font-weight: 500; width: 30%; white-space: nowrap; }
.tokushoho-table ul { padding-left: 1.2rem; }
.tokushoho-table li { margin-bottom: 0.3rem; }
@media (max-width: 640px) {
    .tokushoho-table th { display: block; width: 100%; border-bottom: none; }
    .tokushoho-table td { display: block; width: 100%; }
    .tokushoho-table tr { display: block; margin-bottom: 0.5rem; }
}