/* ===================================================
   base.css - デザインシステム基盤
   =================================================== */

/* ---------------------------------------------------
   CSS カスタムプロパティ
   --------------------------------------------------- */
:root {
    --color-primary:       #35b21c;
    --color-primary-dark:  #2a8f15;
    --color-primary-light: #e8f8e4;
    --color-text:          #2d2d2d;
    --color-text-light:    #666666;
    --color-text-muted:    #999999;
    --color-bg:            #ffffff;
    --color-bg-sub:        #f7f7f7;
    --color-border:        #e0e0e0;
    --color-white:         #ffffff;

    --font-base: 'Noto Sans JP', 'Hiragino Sans', 'Meiryo', sans-serif;

    --container-width:   1100px;
    --container-padding: 24px;

    --radius-sm: 2px;
    --radius:    4px;
    --radius-lg: 8px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow:    0 2px 8px rgba(0, 0, 0, 0.10);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);

    --transition: 0.2s ease;

    --header-height: 70px;
}

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

html {
    font-size: 62.5%; /* 1rem = 10px */
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    font-size: 1.6rem;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    word-break: break-word;
    overflow-x: hidden;
}

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

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

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

ul,
ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ---------------------------------------------------
   コンテナ
   --------------------------------------------------- */
.container {
    max-width: var(--container-width);
    margin-right: auto;
    margin-left: auto;
    padding-right: var(--container-padding);
    padding-left: var(--container-padding);
}

/* ---------------------------------------------------
   ボタン
   --------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 28px;
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--radius);
    border: 2px solid transparent;
    transition: background-color var(--transition), color var(--transition),
                border-color var(--transition), opacity var(--transition);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

.btn:hover {
    opacity: 0.85;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    opacity: 1;
}

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

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    opacity: 1;
}

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

.btn-outline-white:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    opacity: 1;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 1.3rem;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.7rem;
}

/* ---------------------------------------------------
   セクション共通
   --------------------------------------------------- */
.section {
    padding: 80px 0;
}

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

.section--dark {
    background-color: var(--color-text);
    color: var(--color-white);
}

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

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
    position: relative;
    display: inline-block;
    padding-bottom: 16px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--color-primary);
}

.section--dark .section-title,
.section--primary .section-title {
    color: var(--color-white);
}

.section--primary .section-title::after {
    background-color: var(--color-white);
}

.section-sub {
    margin-top: 12px;
    font-size: 1.5rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.section--dark .section-sub,
.section--primary .section-sub {
    color: rgba(255, 255, 255, 0.85);
}

.section-more {
    text-align: center;
    margin-top: 40px;
}

/* ---------------------------------------------------
   ページヘッダー（共通）
   --------------------------------------------------- */
.page-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    padding: 48px var(--container-padding);
    background-color: var(--color-bg-sub);
    overflow: hidden;
    text-align: center;
}

.page-header--has-image {
    min-height: 280px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.page-header--has-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.page-header__content {
    position: relative;
    z-index: 1;
}

.page-header__catch {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}

.page-header--has-image .page-header__catch {
    color: var(--color-white);
}

.page-header__subtitle {
    margin-top: 10px;
    font-size: 1.5rem;
    color: var(--color-text-light);
}

.page-header--has-image .page-header__subtitle {
    color: rgba(255, 255, 255, 0.9);
}

/* ---------------------------------------------------
   メインコンテンツエリア共通
   --------------------------------------------------- */

/* page-header 内のコンテナを ::before オーバーレイより前面に出す */
.page-header .container {
    position: relative;
    z-index: 1;
}

/* 全テンプレートで共通の本文エリア余白 */
.page-content {
    padding: 64px 0;
}

/* ---------------------------------------------------
   パンくずリスト
   --------------------------------------------------- */
.breadcrumb {
    background-color: var(--color-bg-sub);
    border-bottom: 1px solid var(--color-border);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 10px var(--container-padding);
    font-size: 1.3rem;
    color: var(--color-text-light);
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li + li::before {
    content: '›';
    margin: 0 8px;
    color: var(--color-text-muted);
}

.breadcrumb a {
    color: var(--color-text-light);
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

/* ---------------------------------------------------
   カード共通
   --------------------------------------------------- */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.card__image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.card__body {
    padding: 20px;
}

.card__title {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.4;
}

.card__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 1.3rem;
    color: var(--color-text-muted);
}

.card__excerpt {
    margin-top: 8px;
    font-size: 1.4rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ---------------------------------------------------
   バッジ
   --------------------------------------------------- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 1.2rem;
    font-weight: 500;
    border-radius: 2px;
    line-height: 1.4;
}

.badge--primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* ---------------------------------------------------
   ページネーション
   --------------------------------------------------- */
.pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 48px;
}

.pagination .page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    font-size: 1.4rem;
    color: var(--color-text);
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.pagination .dots {
    border: none;
    background: none;
}

/* ---------------------------------------------------
   記事本文エリア
   --------------------------------------------------- */
.entry-content {
    font-size: 1.6rem;
    line-height: 1.9;
    color: var(--color-text);
}

.entry-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin: 40px 0 16px;
    padding-left: 14px;
    border-left: 4px solid var(--color-primary);
    line-height: 1.4;
}

.entry-content h3 {
    font-size: 1.9rem;
    font-weight: 700;
    margin: 32px 0 12px;
    line-height: 1.4;
}

.entry-content p {
    margin-bottom: 20px;
}

.entry-content ul,
.entry-content ol {
    margin: 0 0 20px 24px;
    list-style: disc;
}

.entry-content ol {
    list-style: decimal;
}

.entry-content li {
    margin-bottom: 6px;
}

.entry-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.entry-content img {
    border-radius: var(--radius);
    margin: 8px 0;
}

.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.entry-content table th,
.entry-content table td {
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    text-align: left;
}

.entry-content table th {
    background-color: var(--color-bg-sub);
    font-weight: 700;
}

/* ---------------------------------------------------
   ユーティリティ
   --------------------------------------------------- */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------------------------------------------------
   レスポンシブ（モバイル共通）
   --------------------------------------------------- */
@media (max-width: 768px) {
    html {
        font-size: 58%;
    }

    .section {
        padding: 56px 0;
    }

    .section-title {
        font-size: 2.4rem;
    }

    .section-header {
        margin-bottom: 36px;
    }

    .page-content {
        padding: 40px 0;
    }

    .page-header {
        min-height: 160px;
        padding: 40px var(--container-padding);
    }

    .page-header--has-image {
        min-height: 200px;
    }

    .page-header__catch {
        font-size: 2.4rem;
    }

    .btn {
        padding: 12px 22px;
        font-size: 1.4rem;
    }

    .btn-lg {
        padding: 14px 30px;
        font-size: 1.6rem;
    }
}