/** ヘッダースタイル */
.header-wrapper {
    margin-bottom: 2rem;
}

.header-container {
    position: relative;
}

.header-button {
    background: linear-gradient(to right, #2563eb, #1e40af);
    color: #ffffff;
    padding: 1rem 2rem;
    border-radius: 9999px;
    display: inline-block;
    position: relative;
    z-index: 1;
}

.header-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin: 0;
}

.header-line {
    position: absolute;
    top: 50%;
    left: 0%;
    right: 0;
    height: 1px;
    background-color: #2563eb;
    z-index: 0;
}

@media (min-width: 768px) {
    .header-title {
        font-size: 1.5rem;
    }
}

/* ページコンテナ */
.page-container {
    min-height: 100vh;
    background-color: #ffffff;
    padding: 3rem 1rem;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

/* トップカードグリッド */
.top-cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .top-cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* カードスタイル */
.card {
    background-color: #ffffff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0px 0px 10px -5px #1182ff;
}

.card-header {
    background: linear-gradient(to right, #2563eb, #1e40af);
    padding: 0.75rem 1.5rem;
}

.badge {
    display: inline-block;
    background-color: #ffffff;
    color: #2563eb;
    padding: 0.25rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: bold;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
    margin-bottom: 1rem;
}

.divider {
    border-top: 1px solid #d1d5db;
    margin: 1rem 0;
}

.card-description {
    color: #374151;
    line-height: 1.75;
}

/* セッションコンテナ */
.sessions-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* セッションセクション */
.session-section {
    margin-bottom: 2rem;
}

.section-header {
    background: linear-gradient(to right, #2563eb, #1e40af);
    color: #ffffff;
    padding: 1.5rem 1rem;
    border-radius: 20px 20px 0 0;
}

@media (min-width: 768px) {
    .section-header {
        padding: 1.5rem 2rem;
    }
}

.section-title {
    font-size: 1.125rem;
    font-weight: bold;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 1.5rem;
    }
}

.session-count {
    text-align: right;
    flex-shrink: 0;
}

.count-number {
    font-size: 1.5rem;
    font-weight: bold;
    white-space: nowrap;
}

@media (min-width: 768px) {
    .count-number {
        font-size: 1.875rem;
    }
}

.count-duration {
    font-size: 1rem;
    white-space: nowrap;
}

@media (min-width: 768px) {
    .count-duration {
        font-size: 1.125rem;
    }
}

/* セッショングリッド */
.session-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

@media (min-width: 768px) {
    .session-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* セッションカード */
.session-card {
    background-color: #ffffff;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0px 0px 10px -5px #1182ff;
}

.session-content {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.session-badge {
    flex-shrink: 0;
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: linear-gradient(to bottom right, #2563eb, #1e40af);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}

.badge-number {
    font-size: 0.875rem;
    font-weight: bold;
}

.badge-duration {
    font-size: 0.75rem;
}

.session-info {
    flex: 1;
}

.session-title {
    font-size: 1.125rem;
    font-weight: bold;
    color: #2563eb;
    margin-bottom: 0.75rem;
}

.session-divider {
    border-top: 1px solid #d1d5db;
    margin-bottom: 0.75rem;
}

.session-description {
    font-size: 0.875rem;
    color: #374151;
    line-height: 1.75;
}