* {
    box-sizing: border-box;
}

:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --text: #1f2933;
    --muted: #667085;
    --line: #d8dee8;
    --primary: #176b87;
    --primary-dark: #0f4c5c;
    --accent: #c77700;
    --danger: #b42318;
    --success: #16824a;
    --warning: #b76e00;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
}

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

a:hover {
    text-decoration: underline;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-panel {
    width: min(420px, 100%);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 28px;
    box-shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 244px minmax(0, 1fr);
}

.sidebar {
    background: #102a43;
    color: #f8fafc;
    padding: 22px 18px;
}

.brand {
    display: block;
    color: #ffffff;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
}

.nav {
    display: grid;
    gap: 4px;
}

.nav a,
.nav-group summary {
    color: #d9e2ec;
    border-radius: 6px;
    padding: 10px 12px;
}

.nav-group summary {
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
}

.nav-group summary::-webkit-details-marker {
    display: none;
}

.nav-group summary::after {
    content: "+";
    color: #bcccdc;
    font-weight: 700;
}

.nav-group[open] summary::after {
    content: "-";
}

.nav a:hover,
.nav a.active,
.nav-group summary:hover,
.nav-group summary.active {
    background: #1f3f5b;
    color: #ffffff;
    text-decoration: none;
}

.nav-submenu {
    display: grid;
    gap: 2px;
    margin: 4px 0 6px 10px;
    padding-left: 10px;
    border-left: 1px solid #2f536f;
}

.nav-submenu a {
    font-size: 14px;
    padding: 8px 10px;
}

.main {
    min-width: 0;
}

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 26px;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.topbar-actions form {
    margin: 0;
}

.topbar-account {
    border-radius: 6px;
    font-weight: 650;
    padding: 8px 10px;
}

.topbar-account:hover,
.topbar-account.active {
    background: var(--surface-muted);
    text-decoration: none;
}

.content {
    padding: 26px;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.page-header h1,
.login-panel h1 {
    margin: 0;
    line-height: 1.18;
}

.page-header p,
.login-panel p {
    color: var(--muted);
    margin: 6px 0 0;
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 18px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.metric {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
}

.metric .value {
    font-size: 28px;
    font-weight: 700;
}

.metric .label {
    color: var(--muted);
    margin-top: 2px;
}

.metric-danger {
    border-color: #f4b4ae;
    color: var(--text);
}

.metric-danger .value,
.metric-danger .label {
    color: var(--danger);
}

.metric-danger:hover {
    background: #fff8f7;
    text-decoration: none;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.account-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.account-grid .panel h2 {
    margin-top: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 16px;
}

.form-grid .full {
    grid-column: 1 / -1;
}

label {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    color: #344054;
    font-weight: 600;
}

label > input:not([type="checkbox"]):not([type="radio"]),
label > select,
label > textarea {
    flex: 0 0 100%;
}

.field {
    display: grid;
    gap: 6px;
}

.field + .field {
    margin-top: 16px;
}

.form-label {
    align-items: baseline;
    display: inline-flex;
    gap: 4px;
}

.required-mark {
    color: var(--danger);
    font-weight: 800;
}

.required-legend {
    color: var(--muted);
    font-size: 13px;
    margin: 14px 0;
}

.field-hint {
    color: var(--muted);
    font-size: 13px;
    margin: 0;
}

.field-error {
    color: var(--danger);
    font-size: 13px;
    font-weight: 600;
    margin: 0;
}

.field-control[aria-invalid="true"] {
    border-color: var(--danger);
}

.field-control[aria-invalid="true"]:focus {
    outline: 2px solid rgba(180, 35, 24, 0.2);
    outline-offset: 1px;
}

.account-form-actions {
    margin-top: 18px;
}

.toolbar-field {
    flex: 1 1 220px;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    color: var(--text);
    font: inherit;
    padding: 9px 10px;
}

textarea {
    min-height: 96px;
    resize: vertical;
}

.checkline {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 8px;
    font-weight: 600;
}

.checkline input {
    width: auto;
}

.btn,
button {
    appearance: none;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 12px;
    font: inherit;
    font-weight: 650;
    text-decoration: none;
}

.btn:hover,
button:hover {
    text-decoration: none;
}

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

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

.btn-secondary {
    background: #ffffff;
    border-color: #b8c2cc;
    color: var(--text);
}

.btn-danger {
    background: #fff5f5;
    border-color: #f4b4ae;
    color: var(--danger);
}

.btn-link {
    background: transparent;
    color: var(--primary);
    padding-inline: 0;
}

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

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 11px 10px;
    text-align: left;
    vertical-align: top;
}

th {
    background: var(--surface-muted);
    color: #344054;
    font-size: 13px;
    text-transform: uppercase;
}

.actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

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

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 9px;
    background: #eef4ff;
    color: #174b7a;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

.badge.success {
    background: #e8f6ee;
    color: var(--success);
}

.badge.warning {
    background: #fff4df;
    color: var(--warning);
}

.badge.danger {
    background: #fff1f0;
    color: var(--danger);
}

.alert {
    border-radius: 8px;
    margin-bottom: 16px;
    padding: 12px 14px;
}

.alert-success {
    background: #ecfdf3;
    border: 1px solid #abefc6;
    color: #067647;
}

.alert-error {
    background: #fff1f0;
    border: 1px solid #f4b4ae;
    color: var(--danger);
}

.sr-only {
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.pagination {
    margin-top: 14px;
}

.detail-list {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 10px 18px;
}

.detail-list dt {
    color: var(--muted);
    font-weight: 700;
}

.detail-list dd {
    margin: 0;
}

@media (max-width: 880px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .nav {
        grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    }

    .grid-2,
    .account-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .page-header,
    .topbar {
        align-items: stretch;
        flex-direction: column;
    }

    .topbar-actions {
        align-items: stretch;
        flex-direction: column;
    }
}