/* ボタンスタイル */
.button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.8rem;
    margin: 0.5rem;
    width: 100%;
    background: linear-gradient(135deg, 
        var(--primary-color), 
        var(--secondary-color)
    );
    color: white;
    text-decoration: none;
    border-radius: 25px;
    text-align: center;
    font-weight: 500;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2),
                0 0 65px rgba(30, 77, 43, 0.15);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    letter-spacing: 0.05em;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}

.button:hover::before {
    left: 100%;
}

/* ニュースアイテム */
.news-item {
    background: rgba(255, 255, 255, 0.98);
    padding: 2.5rem;
    border-radius: 25px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12),
                0 0 80px rgba(30, 77, 43, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15),
                0 0 100px rgba(30, 77, 43, 0.1);
}

/* カリキュラムアイテム */
.curriculum-item {
    background: rgba(255, 255, 255, 0.98);
    padding: 3rem;
    border-radius: 25px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12),
                0 0 80px rgba(30, 77, 43, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    backdrop-filter: blur(10px);
}

.curriculum-item:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15),
                0 0 100px rgba(30, 77, 43, 0.1);
}

/* LINEボタン */
.line-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #06C755, #05a548);
    color: white;
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.15rem;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 25px rgba(6, 199, 85, 0.3);
    position: relative;
    z-index: 1;
    width: fit-content;
    letter-spacing: 0.05em;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.line-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(6, 199, 85, 0.4);
    background: linear-gradient(135deg, #07d85c, #06b850);
}

/* フォレストボタン */
.forest-button {
    background: linear-gradient(135deg, 
        var(--primary-color), 
        var(--secondary-color)
    );
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 1.3rem 2.8rem;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2),
                inset 0 1px 1px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.forest-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25),
                inset 0 1px 1px rgba(255, 255, 255, 0.15);
    background: linear-gradient(135deg, 
        #2a6e3e,
        #1a4a2a
    );
}

.forest-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: 0.5s;
}

.forest-button:hover::before {
    left: 100%;
}

.submit-button-container {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
}

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    background-color: #FFD700;
    color: #333;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.submit-button:hover {
    background-color: #FFC800;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.submit-button i {
    margin-right: 0.5rem;
}

/* セクションコンテンツのスタイル追加 */
.section-description {
    max-width: 800px;  /* 画像の幅に合わせて調整 */
    margin: 0 auto;    /* 中央揃え */
    padding: 0 1rem;   /* 左右の余白 */
}

.seminar-image {
    max-width: 800px;  /* 画像の最大幅を設定 */
    margin: 0 auto;    /* 中央揃え */
    padding: 0 1rem;   /* 左右の余白 */
}

.seminar-image img {
    width: 100%;       /* 親要素いっぱいに画像を表示 */
    height: auto;      /* アスペクト比を維持 */
    border-radius: 10px; /* 画像の角を丸く */
}