:root {
    --primary-color: #0052cc; /* A deeper blue for business */
    --accent-color: #00b8d9; /* A vibrant cyan for actions */
    --secondary-color: #5e6c84; /* A neutral gray for secondary elements */
    --background-color: #f4f5f7; /* Light gray background */
    --card-background: #ffffff;
    --text-color: #172b4d; /* Dark blue-gray for text */
    --border-color: #dfe1e6;
    --success-color: #36b37e;
    --warning-color: #ffab00;
    --danger-color: #de350b;
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}
header h1 {
    font-size: 2.5rem;
    margin: 0;
    color: var(--text-color);
}
header p {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-top: 0.5rem;
}

main > section {
    margin-bottom: 1.5rem;
}

.card {
    background-color: var(--card-background);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(23, 43, 77, 0.05);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.card-header h2 {
    font-size: 1.25rem;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background-color: #fafbfc;
    border-top: 1px solid var(--border-color);
    border-radius: 0 0 8px 8px;
}

textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    resize: vertical;
}
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 82, 204, 0.2);
}

.button-primary, .button-secondary, .button-tertiary, .button-accent {
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

.button-primary {
    background-color: var(--primary-color);
    color: white;
}
.button-primary:hover { background-color: #0040a0; }

.button-accent {
    background-color: var(--accent-color);
    color: white;
}
.button-accent:hover { background-color: #00a3bf; }

.button-secondary {
    background-color: #f4f5f7;
    color: var(--secondary-color);
    border-color: var(--border-color);
}
.button-secondary:hover { background-color: #ebecf0; }

.button-tertiary {
    background-color: transparent;
    color: var(--secondary-color);
}
.button-tertiary:hover { background-color: #f4f5f7; }

.hidden { display: none !important; }

.format-selector {
    display: flex;
    gap: 2rem;
}
.format-selector label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

footer {
    text-align: center;
    margin-top: 3rem;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* モーダル用のスタイル */
#modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(23, 43, 77, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
#modal-content {
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.modal-header h3 { margin: 0; font-size: 1.2rem; }
#modal-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-color);
}
#modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

/* 警告バナー */
.warning-banner {
    padding: 1rem;
    background-color: #fffbe6;
    border: 1px solid var(--warning-color);
    border-radius: 4px;
    margin-top: 1rem;
}
.warning-banner p { margin: 0 0 0.5rem 0; }
.warning-banner ul { margin: 0; padding-left: 1.5rem; }

/* --- 既存のCSSの末尾に追加 --- */

/* データプレビュー用テーブルのスタイル */
#modal-body table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

#modal-body th,
#modal-body td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    text-align: left;
    vertical-align: top;
}

#modal-body th {
    background-color: #fafbfc;
    font-weight: 600;
    position: sticky;
    top: -1.5rem; /* モーダルのpadding分を考慮 */
}

/* テーブルのコンテナ */
.table-container {
    max-height: 60vh;
    overflow-y: auto;
}


/* --- 既存のCSSの末尾に追加 --- */

/* モーダル内のフォームスタイル */
.form-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.form-group:last-child {
    margin-bottom: 0;
}
.form-group label {
    margin-bottom: 0;
    margin-right: 1rem;
}
.form-group input[type="text"],
.form-group input[type="number"] {
    width: 80px;
    padding: 0.5rem;
    font-size: 0.9rem;
}
.form-group input[type="checkbox"] {
    transform: scale(1.2);
}