/* 基本スタイル */
:root {
    --primary: #2563EB;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary: #475569;
    --background: #f8fafc;
    --text: #334155;
    --text-light: #64748b;
    --high: #ef4444;
    --medium: #f59e0b;
    --low: #10b981;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background-color: #000;
    line-height: 1.4;
}

/* プレゼンテーションコンテナ */
.presentation-container {
    width: 100%;
    min-height: 100vh;
    background-color: var(--background);
}

/* コンテンツセクション */
.content-section {
    width: 100%;
    background-color: var(--background);
    padding: 4rem 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: auto;
}

.content-section:nth-child(even) {
    background-color: #ffffff;
}

/* スライドヘッダー */
.slide-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.title-container {
    max-width: 70%;
}

.slide-title {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.slide-subtitle {
    font-size: 16px;
    color: var(--secondary);
}

.date-source {
    text-align: right;
    color: var(--text-light);
    font-size: 14px;
}

.date, .source {
    margin-bottom: 0.25rem;
}

/* セクションコンテンツ */
.slide-content {
    display: flex;
    flex: 1;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.column-left {
    width: 60%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.column-right {
    width: 40%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

/* カード */
.card {
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.section-heading {
    font-size: 18px;
    color: var(--primary-dark);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-heading i {
    color: var(--primary);
}

.subsection-heading {
    font-size: 16px;
    color: var(--secondary);
    margin-top: 1.25rem;
    margin-bottom: 0.75rem;
}

.description {
    margin-bottom: 1rem;
    line-height: 1.5;
}

.highlight {
    color: var(--primary);
    font-weight: 500;
}

/* フッター */
.slide-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 12px;
    color: var(--text-light);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.lp-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /*margin-top: 3rem;*/
    padding-top: 1rem;
    font-size: 12px;
    color: var(--text-light);
    max-width: 80%;
    margin-left: auto;
    margin-right: auto;
    padding-bottom: 20px;
    width: 100%;
}


.logo {
    font-weight: bold;
    color: var(--primary);
    font-size: 16px;
}

/* フルサイズコンテンツ（中身が空の場合用） */
.full-content {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    font-size: 24px;
    color: var(--text-light);
    text-align: center;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .content-section {
        padding: 2rem 1rem;
    }
    
    .slide-title {
        font-size: 24px;
    }
    
    .slide-content {
        flex-direction: column;
    }
    
    .column-left,
    .column-right {
        width: 100%;
    }
    
    .title-container {
        max-width: 100%;
    }
    
    .slide-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .date-source {
        text-align: left;
    }
}