body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: #17202a;
    background: #f5f7f9;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
    padding: 0 24px;
    background: #ffffff;
    border-bottom: 1px solid #d9e1e8;
}

.brand {
    font-weight: 700;
    color: #17202a;
    text-decoration: none;
}

.main-nav {
    display: flex;
    gap: 16px;
}

.main-nav a,
.button-link {
    color: #1f6feb;
    text-decoration: none;
    font-weight: 600;
}

.button {
    display: inline-block;
    padding: 10px 14px;
    color: #ffffff;
    text-decoration: none;
    background: #1f6feb;
    border-radius: 6px;
}

.container {
    max-width: 1100px;
    margin: 32px auto;
    padding: 0 24px;
}

.auth-card {
    max-width: 380px;
    margin: 64px auto;
    padding: 24px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

label {
    display: block;
    margin: 16px 0 6px;
    font-weight: 600;
}

input {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 12px;
    border: 1px solid #b9c6d2;
    border-radius: 6px;
    font: inherit;
}

select {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 12px;
    border: 1px solid #b9c6d2;
    border-radius: 6px;
    font: inherit;
    background: #ffffff;
}

button {
    margin-top: 18px;
    padding: 10px 14px;
    border: 0;
    border-radius: 6px;
    background: #1f6feb;
    color: #ffffff;
    font: inherit;
    cursor: pointer;
}

.logout-form {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
}

.logout-form button {
    margin-top: 0;
    background: #34495e;
}

.user-email {
    color: #5d6d7e;
}

.alert {
    padding: 10px 12px;
    background: #fdecea;
    color: #922b21;
    border: 1px solid #f5b7b1;
    border-radius: 6px;
}

.notice {
    margin-bottom: 16px;
    padding: 10px 12px;
    background: #eaf7ee;
    color: #176b35;
    border: 1px solid #a9dfbf;
    border-radius: 6px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.page-header h1 {
    margin-bottom: 6px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border: 1px solid #d9e1e8;
}

th,
td {
    padding: 10px 12px;
    border-bottom: 1px solid #d9e1e8;
    text-align: left;
    vertical-align: top;
}

th {
    background: #eef3f7;
}

.actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.actions form {
    margin: 0;
}

.actions button,
button.danger {
    margin-top: 0;
    background: #b42318;
}

.empty-state {
    padding: 24px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.form-page {
    max-width: 820px;
}

.profile-form {
    padding: 24px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.form-card {
    max-width: 420px;
    padding: 24px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.wide-form {
    max-width: 960px;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.table-wrap {
    overflow-x: auto;
}

.bulk-bar,
.pagination {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 16px 0;
}

.bulk-bar label {
    margin: 0;
}

.bulk-bar select {
    min-width: 140px;
}

.pagination a,
.pagination span {
    padding: 8px 10px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 6px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.checkbox-row {
    display: flex;
    align-items: end;
}

.checkbox-row input {
    width: auto;
}

textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 12px;
    border: 1px solid #b9c6d2;
    border-radius: 6px;
    font: inherit;
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 20px;
}

.filters {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 20px;
    padding: 16px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.filters label {
    margin: 0;
}

.checkbox-inline {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-inline input {
    width: auto;
}

.detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    gap: 24px;
}

dl {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 8px 16px;
    padding: 16px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

dt {
    color: #5d6d7e;
}

dd {
    margin: 0;
}

.mark-form {
    padding: 16px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.pill {
    display: inline-block;
    margin: 0 6px 6px 0;
    padding: 4px 8px;
    background: #eef3f7;
    border: 1px solid #d9e1e8;
    border-radius: 999px;
}

.muted {
    color: #5d6d7e;
}

.description {
    white-space: pre-wrap;
    padding: 16px;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    display: block;
    padding: 18px;
    color: #17202a;
    text-decoration: none;
    background: #ffffff;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
}

.stat-card strong {
    display: block;
    margin-top: 8px;
    font-size: 32px;
}

.stat-label {
    color: #5d6d7e;
}

.dashboard-section {
    margin-top: 24px;
}

@media (max-width: 760px) {
    .topbar,
    .page-header,
    .actions,
    .bulk-bar,
    .pagination {
        align-items: flex-start;
        flex-direction: column;
    }

    .form-grid,
    .checkbox-grid,
    .filters,
    .detail-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
}