/*
Theme Name: SWELL Child (SEIKETSU LAB)
Theme URI: https://seiketsu-science.com
Description: SEIKETSU LAB用 SWELLカスタム子テーマ
Author: SEIKETSU LAB
Version: 3.0.0
Template: swell
*/

/* ===========================
   CSS変数定義
=========================== */
:root {
    --color-main: #2196F3;
    --color-sub: #1565C0;
    --color-accent: #FF6F00;
    --color-link: #1976D2;
    --color-text: #333333;
    --color-bg: #FFFFFF;
    --color-bg-light: #E3F2FD;
    --font-base: 'Noto Sans JP', sans-serif;
}

/* ===========================
   ベース
=========================== */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    font-size: 17px;
}

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

a:hover {
    color: var(--color-sub);
    text-decoration: underline;
}

/* ===========================
   ヘッダー
=========================== */
#header {
    background-color: var(--color-main);
    border-bottom: 3px solid var(--color-sub);
}

#header .site-name a {
    color: #FFFFFF;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.05em;
}

/* ===========================
   グローバルナビ
=========================== */
#g-nav a {
    color: #FFFFFF;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0 1rem;
}

#g-nav a:hover {
    color: var(--color-bg-light);
    text-decoration: none;
}

/* ===========================
   フロントページレイアウト
=========================== */
body.home .l-mainContent,
body.home .l-content,
body.home .l-content__inner,
body.home .post_content,
body.home .l-mainContent--full {
    display: block !important;
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 auto !important;
    float: none !important;
}

.seiketsu-hero {
    width: 100vw;
    margin-left: calc(-50vw + 50%);
}

.fp-inner {
    padding: 32px 40px;
    max-width: 1100px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .fp-inner {
        padding: 24px 20px;
    }
}

/* ===========================
   ヒーローセクション
=========================== */
.seiketsu-hero {
    background: linear-gradient(135deg, #1565C0 0%, #1976D2 60%, #0D47A1 100%);
    color: #FFFFFF;
    padding: 80px 24px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.seiketsu-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
    pointer-events: none;
}

.hero-inner {
    max-width: 860px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-label {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    opacity: 0.7;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: 0.04em;
}

.hero-title .line1,
.hero-title .line2 {
    display: block;
}

.hero-sub {
    font-size: 1rem;
    opacity: 0.85;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-btn-primary {
    display: inline-block;
    background-color: #FF6F00;
    color: #FFFFFF;
    padding: 16px 40px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.2s;
}

.hero-btn-primary:hover {
    opacity: 0.85;
    transform: translateY(-2px);
    color: #FFFFFF;
    text-decoration: none;
}

.hero-btn-secondary {
    display: inline-block;
    background: transparent;
    color: #FFFFFF;
    padding: 15px 32px;
    border-radius: 6px;
    border: 2px solid rgba(255,255,255,0.6);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s;
}

.hero-btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: #FFFFFF;
    color: #FFFFFF;
    text-decoration: none;
}

.hero-stats-bar {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.hstat {
    text-align: center;
}

.hnum {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.hlabel {
    display: block;
    font-size: 0.72rem;
    opacity: 0.7;
    margin-top: 4px;
}

@media (max-width: 560px) {
    .seiketsu-hero {
        padding: 56px 20px 40px;
    }
    .hero-stats-bar {
        gap: 20px;
    }
    .hnum {
        font-size: 1.3rem;
    }
    .hero-btns {
        flex-direction: column;
        align-items: center;
        margin-bottom: 36px;
    }
}

/* ===========================
   セクションタイトル
=========================== */
.section-title,
.post_content h2.section-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-main);
    padding: 0 0 12px !important;
    border: none !important;
    border-bottom: 2px solid var(--color-accent) !important;
    margin: 16px 0 28px;
    letter-spacing: 0.03em;
    background: none !important;
}

.post_content h2.section-title::before,
.post_content h2.section-title::after {
    display: none !important;
    content: none !important;
}

/* ===========================
   記事カード
=========================== */
.post-card-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 24px;
    margin-bottom: 48px;
}

@media (max-width: 900px) {
    .post-card-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 560px) {
    .post-card-grid {
        grid-template-columns: 1fr !important;
    }
}

.post-card {
    background: #FFFFFF;
    border: 1px solid #E3F2FD;
    border-radius: 10px;
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
    box-shadow: 0 2px 8px rgba(21,101,192,0.07);
}

.post-card:hover {
    box-shadow: 0 8px 24px rgba(21,101,192,0.14);
    transform: translateY(-3px);
}

.post-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.post-card-body {
    padding: 14px 16px;
}

.post-card-body h3 {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.5;
    margin: 0 0 8px;
}

.post-card-body h3 a {
    color: #1565C0;
    text-decoration: none;
}

.post-card-body h3 a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.post-card-body .post-date {
    font-size: 0.75rem;
    color: #9E9E9E;
}

.post-card-no-thumb {
    background: linear-gradient(135deg, var(--color-main), var(--color-sub));
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.3);
    font-size: 2rem;
}

/* ===========================
   カテゴリーグリッド
=========================== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}

@media (max-width: 560px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.category-card {
    display: block;
    background: #FFFFFF;
    border: 1px solid #E3F2FD;
    border-radius: 10px;
    padding: 20px 16px;
    text-align: center;
    color: var(--color-main);
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.category-card:hover {
    background: var(--color-main);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(21,101,192,0.18);
    text-decoration: none;
    border-color: var(--color-main);
}

/* ===========================
   CTAボックス
=========================== */
.cta-box {
    background: linear-gradient(135deg, var(--color-main), var(--color-sub));
    color: #FFFFFF;
    text-align: center;
    padding: 48px 24px;
    border-radius: 12px;
    margin: 48px 0;
}

.cta-box h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-box p {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-bottom: 24px;
}

.cta-box .cta-btn {
    display: inline-block;
    background-color: var(--color-accent);
    color: #FFFFFF;
    padding: 14px 40px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: opacity 0.2s;
    width: auto;
}

.cta-box .cta-btn:hover {
    opacity: 0.82;
    color: #FFFFFF;
    text-decoration: none;
}

/* ===========================
   データボックス（記事内）
=========================== */
.data-box {
    background-color: var(--color-bg-light);
    border-left: 4px solid var(--color-main);
    padding: 16px 20px;
    margin: 24px 0;
    border-radius: 0 4px 4px 0;
}

.data-box .data-source {
    font-size: 0.75rem;
    color: #888;
    margin-top: 8px;
}

/* ===========================
   姉妹サイトリンク
=========================== */
.sister-site-box {
    background-color: #F5F5F5;
    border: 1px solid #DDDDDD;
    padding: 20px 24px;
    border-radius: 8px;
    margin: 32px 0;
    text-align: center;
}

.sister-site-box p {
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 8px;
}

.sister-site-box a {
    font-weight: 700;
    color: var(--color-main);
}

/* ===========================
   ポイントボックス
=========================== */
.point-box {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 32px 0;
}

.point-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background-color: var(--color-bg-light);
    border-radius: 8px;
    padding: 14px 16px;
}

.point-item .point-num {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--color-accent);
    min-width: 28px;
}

.point-item .point-text {
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.5;
}

/* ===========================
   フッター
=========================== */
#footer {
    background-color: var(--color-main);
    color: #FFFFFF;
    text-align: center;
    padding: 24px;
    font-size: 0.85rem;
}

#footer a {
    color: #BBDEFB;
}

#footer a:hover {
    color: #FFFFFF;
}

/* ===========================
   PC サイドバーレイアウト修正（記事ページ用）
=========================== */
@media (min-width: 1024px) {
    .l-content {
        display: flex;
        gap: 40px;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
        align-items: flex-start;
    }
    .l-mainContent {
        flex: 1;
        min-width: 0;
    }
    .l-sidebar {
        width: 300px;
        flex-shrink: 0;
    }
    .l-mainContent--full {
        max-width: 100%;
    }
}

/* ===========================
   テキスト強調
=========================== */
.highlight {
    background: linear-gradient(transparent 55%, rgba(255, 200, 0, 0.4) 55%);
    font-weight: 700;
    padding: 0 2px;
}

.badge-new {
    display: inline-block;
    background-color: var(--color-accent);
    color: #FFFFFF;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
    margin-right: 6px;
    vertical-align: middle;
}

.hero-sub-cta {
    display: block;
    text-align: center;
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    margin-top: 12px;
    text-decoration: underline;
}

.hero-sub-cta:hover {
    color: #FFFFFF;
}