:root {
    --bg: #0f1722;
    --sidebar-bg: #111827;
    --sidebar-border: rgba(148, 163, 184, 0.12);
    --panel-bg: #f4f7fb;
    --card-bg: #ffffff;
    --card-border: #dbe4f0;
    --text: #172033;
    --muted: #66758f;
    --heading: #0f172a;
    --primary: #2f6fed;
    --primary-dark: #1f56c6;
    --success: #159957;
    --warning: #c28117;
    --danger: #d14343;
    --sidebar-text: #dbe6f7;
    --sidebar-muted: #90a1bb;
    --sidebar-active: rgba(47, 111, 237, 0.22);
    --shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --sidebar-width: 274px;
}

* { box-sizing: border-box; }
html, body {
    margin: 0;
    min-height: 100%;
    font-family: Inter, Segoe UI, Arial, sans-serif;
    color: var(--text);
    background: var(--panel-bg);
}
body { line-height: 1.45; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

#blazor-error-ui {
    background: #fff3cd;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0,0,0,.2);
    display: none;
    left: 0;
    padding: 0.75rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 9999;
}

.admin-shell {
    min-height: 100vh;
    display: flex;
    background: var(--panel-bg);
}

.admin-sidebar {
    width: var(--sidebar-width);
    flex: 0 0 var(--sidebar-width);
    background: linear-gradient(180deg, #111827 0%, #0d1420 100%);
    color: var(--sidebar-text);
    border-right: 1px solid var(--sidebar-border);
    padding: 18px 14px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.admin-brand {
    display: grid;
    grid-template-columns: 52px 1fr;
    gap: 12px;
    align-items: center;
    padding: 8px 10px 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.admin-brand-logo {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 12px;
    display: block;
    background: rgba(255,255,255,0.03);
    padding: 4px;
}

.admin-brand-title {
    font-size: 0.98rem;
    font-weight: 700;
    line-height: 1.15;
    color: #f8fbff;
}

.admin-brand-subtitle {
    margin-top: 4px;
    font-size: 0.78rem;
    color: var(--sidebar-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.admin-nav-section {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.admin-nav-heading {
    padding: 0 10px 6px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--sidebar-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.admin-nav-link {
    display: block;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--sidebar-text);
    font-size: 0.95rem;
    transition: background-color .16s ease, transform .16s ease, color .16s ease;
}

.admin-nav-link:hover {
    background: rgba(255,255,255,0.06);
    color: #ffffff;
    transform: translateX(2px);
}

.admin-nav-link.active,
.admin-nav-link[aria-current="page"] {
    background: var(--sidebar-active);
    color: #ffffff;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
}

.admin-main {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 22px 30px 18px;
    background: rgba(244,247,251,0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(148,163,184,0.18);
    position: sticky;
    top: 0;
    z-index: 10;
}

.admin-topbar-label {
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 5px;
}

.admin-topbar-title {
    margin: 0;
    color: var(--heading);
    font-size: 1.8rem;
    line-height: 1.05;
}

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

.admin-env-badge,
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.admin-env-badge-dev,
.badge-dev {
    background: #e0efff;
    color: #245dc9;
}

.admin-env-badge-prod,
.badge-prod {
    background: #e7e9ee;
    color: #4b5565;
}

.admin-content {
    padding: 28px 30px 34px;
}

.admin-page,
.health-dashboard {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.admin-page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
}

.admin-page-title,
.admin-page-header h1 {
    margin: 0;
    font-size: 1.55rem;
    color: var(--heading);
}

.admin-page-subtitle,
.admin-page-header p {
    margin: 6px 0 0;
    color: var(--muted);
    max-width: 74ch;
}

.stats-grid,
.admin-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.stat-card,
.section-card,
.admin-card,
.quick-action-card,
.login-card,
.table-shell {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.stat-card {
    padding: 18px 18px 16px;
}

.stat-label {
    margin: 0;
    font-size: 0.76rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.stat-value {
    margin: 10px 0 0;
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--heading);
}

.stat-hint {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.section-card {
    overflow: hidden;
}

.section-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--card-border);
}

.section-card-header h3,
.admin-section-title {
    margin: 0;
    font-size: 1.05rem;
    color: var(--heading);
}

.section-card-body {
    padding: 18px 20px 20px;
}

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

.quick-action-card {
    padding: 18px;
    transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}

.quick-action-card:hover {
    transform: translateY(-2px);
    border-color: #bed0f1;
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.12);
}

.quick-action-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: var(--heading);
}

.quick-action-description {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

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

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

.admin-table th,
.admin-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid #ebf0f7;
    vertical-align: top;
}

.admin-table th {
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    font-weight: 800;
    background: #f9fbfe;
}

.admin-table tbody tr:hover {
    background: #fafcff;
}

.status-badge,
.admin-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.status-success,
.admin-badge-success { background: #dcfce7; color: #166534; }
.status-warning,
.admin-badge-warning { background: #fff3d5; color: #9a6700; }
.status-danger,
.admin-badge-danger { background: #ffe2e2; color: #a92b2b; }
.status-muted { background: #ecf1f7; color: #526277; }

.admin-button {
    appearance: none;
    border: 0;
    border-radius: 12px;
    padding: 10px 16px;
    cursor: pointer;
    font-weight: 700;
    transition: background-color .15s ease, transform .15s ease, box-shadow .15s ease;
}

.admin-button:hover { transform: translateY(-1px); }

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

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

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

.alert-banner {
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 0.92rem;
    font-weight: 600;
}

.alert-info { background: #eaf2ff; color: #245dc9; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-warning { background: #fff3d5; color: #9a6700; }
.alert-danger { background: #ffe2e2; color: #a92b2b; }

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.loading-state,
.empty-state {
    padding: 28px;
    border-radius: var(--radius-md);
    background: #fbfcfe;
    border: 1px dashed #d6dfed;
    color: var(--muted);
    text-align: center;
}

.empty-title {
    margin: 0;
    font-weight: 700;
    color: var(--heading);
}

.empty-message {
    margin: 8px 0 0;
}

.form-field {
    display: grid;
    gap: 8px;
    color: var(--heading);
    font-weight: 600;
}

.form-control {
    width: 100%;
    border: 1px solid #ccd7e8;
    border-radius: 12px;
    padding: 12px 14px;
    background: #ffffff;
    color: var(--heading);
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.form-control:focus {
    border-color: #7ea6f6;
    box-shadow: 0 0 0 4px rgba(47,111,237,0.12);
}

.login-layout-shell {
    min-height: 100vh;
    background: radial-gradient(circle at top, #1d2940 0%, #0f1722 48%, #0a101a 100%);
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
}

.login-card {
    width: min(100%, 460px);
    padding: 26px;
}

.login-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
    margin-bottom: 18px;
}

.login-logo {
    width: 110px;
    max-width: 110px;
    max-height: 110px;
    height: auto;
    object-fit: contain;
}

.login-brand-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--heading);
}

.login-brand-sub {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.login-copy h1 {
    margin: 0;
    color: var(--heading);
    font-size: 1.5rem;
}

.login-copy p {
    margin: 8px 0 0;
    color: var(--muted);
}

.login-toolbar {
    margin: 18px 0 14px;
}

.login-form {
    display: grid;
    gap: 14px;
}

.login-submit {
    width: 100%;
    margin-top: 4px;
}

@media (max-width: 1200px) {
    .stats-grid,
    .admin-grid,
    .quick-actions-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .admin-shell {
        flex-direction: column;
    }

    .admin-sidebar {
        position: static;
        width: 100%;
        height: auto;
        flex-basis: auto;
    }

    .admin-topbar,
    .admin-content {
        padding-left: 18px;
        padding-right: 18px;
    }
}

@media (max-width: 640px) {
    .admin-topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .stats-grid,
    .admin-grid,
    .quick-actions-grid {
        grid-template-columns: 1fr;
    }

    .login-shell {
        padding: 16px;
    }

    .login-card {
        padding: 20px;
    }
}