:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-muted: #eef2f7;
    --border: #d9e0ea;
    --text: #172033;
    --muted: #657086;
    --primary: #2364aa;
    --primary-dark: #174b82;
    --success-bg: #eef9f1;
    --success-text: #236d3b;
    --danger-bg: #fff0f0;
    --danger-text: #a43030;
    --shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background: var(--bg);
    font-family: Arial, Helvetica, sans-serif;
    letter-spacing: 0;
}

a {
    color: inherit;
}

.login-page {
    display: grid;
    place-items: center;
}

.login-shell {
    width: min(100%, 440px);
    padding: 24px;
}

.login-panel {
    padding: 30px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.login-brand {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 26px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    color: #ffffff;
    background: var(--primary);
    border-radius: 8px;
    font-size: 22px;
    font-weight: 700;
}

.brand-logo {
    display: block;
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 8px;
}

.brand-logo-large {
    width: 48px;
    height: 48px;
}

.login-brand h1,
.topbar h1,
.content-band h2 {
    margin: 0;
}

.login-brand p,
.content-band p,
.metric-card p {
    margin: 6px 0 0;
    color: var(--muted);
}

.login-form {
    display: grid;
    gap: 10px;
}

.login-form label {
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
}

.login-form input {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    color: var(--text);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 15px;
}

.login-form button {
    min-height: 44px;
    margin-top: 10px;
    color: #ffffff;
    background: var(--primary);
    border: 0;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.login-form button:hover {
    background: var(--primary-dark);
}

.alert {
    padding: 12px;
    margin-bottom: 18px;
    border-radius: 6px;
    font-size: 14px;
}

.alert-error {
    color: var(--danger-text);
    background: var(--danger-bg);
    border: 1px solid #f0c8c8;
}

.alert-success {
    color: var(--success-text);
    background: var(--success-bg);
    border: 1px solid #bfe7ca;
}

.app-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    padding: 24px 18px;
    color: #ffffff;
    background: #172033;
}

.sidebar-brand {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 0 6px 24px;
}

.sidebar-brand strong {
    display: block;
}

.sidebar-brand span:last-child {
    display: block;
    margin-top: 2px;
    color: #b8c3d6;
    font-size: 13px;
}

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

.nav-link {
    display: block;
    padding: 11px 12px;
    color: #dce5f2;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
}

.nav-link:hover,
.nav-link.is-active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.11);
}

.main-content {
    min-width: 0;
    padding: 28px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.user-chip {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 10px 8px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.user-chip a {
    padding: 7px 10px;
    color: #ffffff;
    background: var(--primary);
    border-radius: 6px;
    text-decoration: none;
}

.content-band {
    padding: 26px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(23, 32, 51, 0.05);
}

.section-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 22px;
}

.button-primary,
.button-secondary,
.button-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 9px 13px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.button-primary {
    color: #ffffff;
    background: var(--primary);
    border: 1px solid var(--primary);
}

.button-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.button-secondary {
    color: var(--text);
    background: #ffffff;
    border: 1px solid var(--border);
}

.button-danger {
    color: var(--danger-text);
    background: #ffffff;
    border: 1px solid #efb8b8;
}

.button-danger:hover {
    background: var(--danger-bg);
}

.button-danger:disabled {
    color: var(--muted);
    background: var(--surface-muted);
    border-color: var(--border);
    cursor: not-allowed;
}

.action-group {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
}

.action-group form {
    margin: 0;
}

.empty-state {
    padding: 24px;
    background: var(--surface-muted);
    border: 1px dashed var(--border);
    border-radius: 8px;
}

.empty-state h3 {
    margin: 0;
    font-size: 18px;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

.data-table th,
.data-table td {
    padding: 13px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

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

.data-table tr:last-child td {
    border-bottom: 0;
}

.table-title-link {
    color: var(--primary-dark);
    font-weight: 700;
    text-decoration: none;
}

.table-title-link:hover {
    text-decoration: underline;
}

.data-table td span {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 13px;
}

.status-badge {
    display: inline-flex;
    width: fit-content;
    padding: 5px 8px;
    color: var(--primary-dark);
    background: #e8f1fb;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.admin-form {
    display: grid;
    gap: 18px;
    max-width: 780px;
}

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

.form-row {
    display: grid;
    gap: 7px;
}

.form-row label {
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 10px 12px;
    color: var(--text);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 6px;
    font: inherit;
}

.form-row input,
.form-row select {
    min-height: 42px;
}

.form-row textarea {
    resize: vertical;
}

.field-error {
    color: var(--danger-text);
    font-size: 13px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.detail-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    margin: 0 0 26px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--border);
}

.detail-list div {
    min-height: 88px;
    padding: 16px;
    background: #ffffff;
}

.detail-list dt {
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.detail-list dd {
    margin: 0;
    color: var(--text);
    line-height: 1.45;
}

.placeholder-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.placeholder-card {
    min-height: 132px;
    padding: 16px;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.placeholder-card h3 {
    margin: 0;
    font-size: 16px;
}

.placeholder-card p {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.45;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 22px;
}

.metric-card {
    min-height: 148px;
    padding: 18px;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.metric-label {
    display: block;
    margin-bottom: 12px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.metric-card strong {
    display: block;
    font-size: 28px;
}

@media (max-width: 800px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .nav-menu {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .section-heading,
    .action-group,
    .form-actions {
        align-items: stretch;
        flex-direction: column;
    }

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

    .detail-list,
    .placeholder-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}