/* ==========================================
   京都大学風 特別支援教育講座 スタイルシート
   アカデミックで格調高いデザイン
   ========================================== */

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

:root {
    --color-primary: #003C78;      /* 濃い青（アカデミックカラー） */
    --color-secondary: #005BAC;    /* ミディアムブルー */
    --color-accent: #C8102E;       /* アクセントレッド */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #FFFFFF;
    --color-bg-gray: #F5F5F5;
    --color-bg-dark: #1A1A1A;
    --color-border: #DDDDDD;
    --font-main: "游ゴシック体", "Yu Gothic", YuGothic, "ヒラギノ角ゴシック Pro", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, "MS Pゴシック", sans-serif;
    --font-serif: "游明朝", "Yu Mincho", YuMincho, "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", "MS P明朝", "MS 明朝", serif;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    font-size: 16px;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   ヘッダー
   ========================================== */
.header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.header-top {
    background-color: var(--color-bg-gray);
    border-bottom: 1px solid var(--color-border);
    padding: 8px 0;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo a {
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
}

.header-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.header-nav a {
    color: var(--color-text-light);
    font-size: 13px;
}

.header-main {
    padding: 20px 0;
}

.site-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 15px;
    font-family: var(--font-serif);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 2px solid var(--color-primary);
}

.main-nav li {
    flex: 1;
}

.main-nav a {
    display: block;
    padding: 12px 20px;
    color: var(--color-text);
    font-size: 15px;
    text-align: center;
    border-right: 1px solid var(--color-border);
    transition: background-color 0.3s, color 0.3s;
}

.main-nav li:last-child a {
    border-right: none;
}

.main-nav a:hover {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

/* ==========================================
   メインビジュアル
   ========================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: #FFFFFF;
    padding: 80px 0;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="rgba(255,255,255,0.05)" x="0" y="0" width="100%" height="100%"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    font-family: var(--font-serif);
    line-height: 1.4;
}

.hero-text {
    font-size: 18px;
    line-height: 1.8;
    max-width: 800px;
}

/* ==========================================
   特色セクション
   ========================================== */
.section-feature {
    padding: 80px 0;
    background-color: var(--color-bg);
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 50px;
    text-align: center;
    font-family: var(--font-serif);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--color-accent);
}

.feature-boxes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-box {
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    padding: 40px 30px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.feature-box:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 60, 120, 0.1);
}

.feature-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-secondary);
    opacity: 0.2;
    margin-bottom: 20px;
    font-family: Georgia, serif;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.feature-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-light);
}

/* ==========================================
   新着情報
   ========================================== */
.section-news {
    padding: 80px 0;
    background-color: var(--color-bg-gray);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-link {
    color: var(--color-secondary);
    font-size: 14px;
    font-weight: 600;
}

.section-link:hover {
    text-decoration: underline;
}

.news-list {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
}

.news-item {
    padding: 20px 30px;
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.3s;
}

.news-item:last-child {
    border-bottom: none;
}

.news-item:hover {
    background-color: #FAFAFA;
}

.news-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 8px;
}

.news-date {
    font-size: 14px;
    color: var(--color-text-light);
    font-weight: 600;
}

.news-category {
    background-color: var(--color-primary);
    color: #FFFFFF;
    padding: 2px 12px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
}

.news-title {
    font-size: 16px;
    font-weight: 500;
}

.news-title a {
    color: var(--color-text);
}

.news-title a:hover {
    color: var(--color-secondary);
}

/* ==========================================
   コンテンツグリッド
   ========================================== */
.section-grid {
    padding: 80px 0;
    background-color: var(--color-bg);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-item {
    background-color: var(--color-bg-gray);
    border: 1px solid var(--color-border);
    transition: transform 0.3s, box-shadow 0.3s;
}

.grid-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.grid-large {
    grid-column: span 2;
    grid-row: span 2;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.grid-large .grid-content {
    color: #FFFFFF;
}

.grid-large .grid-title {
    color: #FFFFFF;
}

.grid-large .grid-text {
    color: rgba(255, 255, 255, 0.9);
}

.grid-large .grid-link {
    color: #FFFFFF;
    border-color: #FFFFFF;
}

.grid-large .grid-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.grid-content {
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.grid-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.grid-text {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.grid-link {
    color: var(--color-secondary);
    font-size: 14px;
    font-weight: 600;
    display: inline-block;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s;
}

.grid-link:hover {
    border-color: var(--color-secondary);
}

/* ==========================================
   フッター
   ========================================== */
.footer {
    background-color: var(--color-bg-dark);
    color: #FFFFFF;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-title {
    font-size: 18px;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-address {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    text-align: center;
}

.footer-copyright {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================
   レスポンシブデザイン
   ========================================== */
@media (max-width: 1024px) {
    .feature-boxes {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-large {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .header-nav {
        display: none;
    }
    
    .main-nav ul {
        flex-direction: column;
        border: none;
    }
    
    .main-nav li {
        border-bottom: 1px solid var(--color-border);
    }
    
    .main-nav a {
        border-right: none;
        text-align: left;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-text {
        font-size: 16px;
    }
    
    .section-feature,
    .section-news,
    .section-grid {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .grid-large {
        grid-column: span 1;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-nav {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}