/* 基本設定 */
html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: 'Noto Sans JP', 'Helvetica Neue', 'Arial', 'Hiragino Sans', 'Meiryo', sans-serif;
}

/* ページ全体のラッパー */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

/* ヘッダー */
.page-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    padding: 16px 48px;
    flex-shrink: 0;
    background: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.header-logo {
    display: block;
    max-width: 260px;
    height: auto;
    flex-shrink: 0;
}

.page-title {
    margin: 0;
    font-size: 2rem;
    font-weight: 900;
    color: #1a1a2e;
    letter-spacing: 0.04em;
    text-shadow: none;
    text-align: left;
}

/* ヘッダーとカードの間のエリア */
.grid-intro {
    text-align: center;
    padding: 12px 24px 4px;
    flex-shrink: 0;
}

.page-subtitle {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.06em;
}

/* 3枚カードのグリッド */
.prefecture-grid {
    display: flex;
    flex: 1;
    gap: 24px;
    padding: 12px 40px 24px;
    align-items: stretch;
}

/* 各県カード */
.prefecture-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    border-radius: 20px;
    padding: 24px 32px;
    gap: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    min-height: 200px;
}

/* 各県のイメージカラー */
#shizuoka {
    background: linear-gradient(45deg, #78181c, #b24d48);
}
#yamanashi {
    background: linear-gradient(45deg, #0079c7, #61adff);
}
#nagano {
    background: linear-gradient(45deg, #2E8B57, #3CB371);
}

/* 県名 */
.prefecture-name {
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 900;
    color: #ffffff;
    letter-spacing: 0.06em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    text-align: center;
}

/* 説明文 */
.prefecture-desc {
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    line-height: 1.7;
}

/* CTAボタン風テキスト */
.card-cta {
    margin-top: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.2);
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    padding: 10px 24px;
    border-radius: 24px;
    letter-spacing: 0.05em;
    transition: background 0.2s ease, border-color 0.2s ease;
}

/* ホバーエフェクト */
.prefecture-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
    filter: brightness(1.1);
}

.prefecture-card:hover .card-cta {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.8);
}

/* レスポンシブ（タブレット以下） */
@media (max-width: 768px) {
    .prefecture-grid {
        flex-direction: column;
        padding: 16px 24px 40px;
        gap: 16px;
    }

    .grid-intro {
        padding: 24px 24px 4px;
    }

    .prefecture-card {
        min-height: 180px;
        padding: 36px 24px;
    }

    .page-header {
        flex-direction: column;
        align-items: center;
        padding: 28px 24px 24px;
    }

    .header-logo {
        max-width: 240px;
        margin-bottom: 16px;
    }

    .page-title {
        font-size: 1.3rem;
        text-align: center;
    }
}