:root {
    --color-bg: #f4f6f8;
    --color-surface: #fff;
    --color-text: #1f2933;
    --color-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-danger: #dc2626;
    --color-success: #059669;
    --color-error-bg: #fef2f2;
    --color-success-bg: #ecfdf5;
    --border: #e5e7eb;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Hiragino Sans", "Meiryo", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
}

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.site-header .container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem;
}

.site-title {
    margin: 0;
    font-size: 1.25rem;
}

.site-title a {
    color: inherit;
    text-decoration: none;
}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.logout-form {
    display: inline;
    margin: 0;
}

.site-footer {
    margin-top: 2rem;
    padding: 1rem 0;
    color: var(--color-muted);
    font-size: 0.875rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-danger);
}

.page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.page-header h2 {
    margin: 0;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.card-narrow {
    max-width: 420px;
    margin: 2rem auto;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select,
.search-form input,
.search-form select {
    width: 100%;
    max-width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font: inherit;
}

.search-form,
.filters-form {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: center;
}

.search-form input,
.filters-form input,
.filters-form select {
    width: auto;
    min-width: 140px;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    background: #f9fafb;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-link {
    border: none;
    background: none;
    color: var(--color-primary);
    padding: 0;
}

.btn-danger {
    color: var(--color-danger);
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.inline-form {
    display: inline;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    font-size: 0.9375rem;
}

.data-table th,
.data-table td {
    border: 1px solid var(--border);
    padding: 0.5rem 0.75rem;
    text-align: left;
    vertical-align: top;
}

.data-table th {
    background: #f9fafb;
}

.data-table .empty {
    text-align: center;
    color: var(--color-muted);
}

.col-check {
    width: 40px;
}

.actions {
    white-space: nowrap;
}

.table-toolbar {
    margin-bottom: 0.75rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pagination {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}

.pagination a {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--color-surface);
}

.pagination a.is-active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.error-list {
    background: var(--color-error-bg);
    color: var(--color-danger);
    padding: 0.75rem 1rem 0.75rem 2rem;
    border-radius: var(--radius);
}

.info {
    color: var(--color-muted);
}

.hint,
.warning {
    font-size: 0.875rem;
    color: var(--color-muted);
}

.warning {
    color: #b45309;
    margin-top: 1rem;
}

.detail-list {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 0.5rem 1rem;
}

.detail-list dt {
    font-weight: 600;
    margin: 0;
}

.detail-list dd {
    margin: 0;
}

.preview-body {
    background: #f9fafb;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: var(--shadow);
}

.stat-label {
    display: block;
    color: var(--color-muted);
    font-size: 0.875rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
}

.action-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.action-list li {
    margin-bottom: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-failed {
    background: var(--color-error-bg);
    color: var(--color-danger);
}

.progress-wrap {
    height: 24px;
    background: #e5e7eb;
    border-radius: var(--radius);
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s ease;
}