:root {
    --saas-bg: #f5f7ff;
    --saas-surface: #ffffff;
    --saas-primary: #4c6fff;
    --saas-primary-dark: #3246c5;
    --saas-accent: #8f9eff;
    --saas-text: #1d2440;
    --saas-muted: #6b7390;
    --saas-border: rgba(76, 111, 255, 0.12);
    --saas-shadow: 0 20px 45px rgba(32, 56, 117, 0.12);
}

body {
    background: radial-gradient(circle at top, rgba(140, 164, 255, 0.18), transparent 55%), var(--saas-bg);
    color: var(--saas-text);
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.navbar.bg-primary {
    background: linear-gradient(120deg, var(--saas-primary-dark), var(--saas-primary));
    box-shadow: 0 12px 35px rgba(57, 80, 167, 0.32);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar .navbar-brand {
    font-weight: 700;
    letter-spacing: 0.03em;
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.navbar .navbar-brand::before {
    content: "";
    display: inline-block;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

.navbar .nav-link {
    position: relative;
    padding: 0.65rem 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85) !important;
    transition: color 0.2s ease, transform 0.2s ease;
}

.navbar .nav-link:hover {
    color: #fff !important;
    transform: translateY(-1px);
}

.navbar .nav-link.active::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 8px;
    height: 3px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
}

main.container {
    max-width: 1260px;
}

.card {
    border: 1px solid var(--saas-border);
    border-radius: 18px;
    box-shadow: var(--saas-shadow);
    background: var(--saas-surface);
}

.card + .card {
    margin-top: 1.25rem;
}

.card .card-body > h4,
.card .card-body > h5 {
    font-weight: 700;
    color: var(--saas-text);
}

.saas-summary-card {
    border: none;
    border-radius: 20px;
    padding: 1.75rem 1.5rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    background: linear-gradient(160deg, rgba(76, 111, 255, 0.08), rgba(76, 111, 255, 0));
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.saas-summary-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 22px 45px rgba(47, 71, 157, 0.18);
}

.saas-summary-card .display-6 {
    font-weight: 700;
    color: var(--saas-primary-dark);
}

.saas-summary-card .text-muted {
    color: var(--saas-muted) !important;
}

.saas-section-title {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--saas-text);
    margin-bottom: 1rem;
}

.badge-plan {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    background: rgba(76, 111, 255, 0.15);
    color: var(--saas-primary-dark);
    border-radius: 999px;
    padding: 0.35rem 0.7rem;
    text-transform: uppercase;
}

.badge.bg-success,
.badge.bg-warning,
.badge.bg-secondary {
    border-radius: 999px;
    padding: 0.35rem 0.75rem;
    font-weight: 600;
}

.domain-table tbody tr.primary-domain td {
    background: linear-gradient(90deg, rgba(76, 111, 255, 0.12), rgba(76, 111, 255, 0.02));
    border-top: none;
    border-bottom: none;
}

.domain-table tbody tr.primary-domain td:first-child {
    font-weight: 600;
}

.domain-table tbody tr td {
    border-bottom: 1px solid rgba(76, 111, 255, 0.08);
}

.domain-table td.text-end form {
    display: inline-block;
}

.domain-table td.text-end form + form {
    margin-left: 0.35rem;
}

.domain-table .btn {
    border-radius: 999px;
    padding: 0.25rem 0.75rem;
}

.tenant-domain {
    font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.85rem;
    color: var(--saas-primary-dark);
    letter-spacing: 0.01em;
}

.table thead {
    background: rgba(76, 111, 255, 0.08);
    color: var(--saas-primary-dark);
    border-radius: 12px 12px 0 0;
}

.table thead th {
    border: none;
    font-weight: 600;
    padding-top: 0.95rem;
    padding-bottom: 0.95rem;
}

.table tbody tr {
    transition: background-color 0.2s ease;
}

.table tbody tr:hover {
    background: rgba(76, 111, 255, 0.05);
}

.table tbody td {
    vertical-align: middle;
    color: var(--saas-text);
    border-color: rgba(76, 111, 255, 0.08);
}

.btn-primary {
    background: linear-gradient(135deg, var(--saas-primary), var(--saas-primary-dark));
    border: none;
    box-shadow: 0 14px 22px rgba(76, 111, 255, 0.28);
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 26px rgba(76, 111, 255, 0.32);
}

.btn-outline-primary {
    border-color: rgba(76, 111, 255, 0.45);
    color: var(--saas-primary-dark);
    font-weight: 600;
}

.btn-outline-primary:hover {
    background-color: rgba(76, 111, 255, 0.12);
    color: var(--saas-primary-dark);
}

.btn-outline-success,
.btn-outline-warning {
    font-weight: 600;
}

.form-label {
    font-weight: 600;
    color: var(--saas-muted);
}

.form-control,
.form-select {
    border-radius: 12px;
    border-color: rgba(76, 111, 255, 0.18);
    box-shadow: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(76, 111, 255, 0.45);
    box-shadow: 0 0 0 0.2rem rgba(76, 111, 255, 0.15);
}

.alert-info {
    background: rgba(76, 111, 255, 0.1);
    border: none;
    color: var(--saas-primary-dark);
    border-radius: 14px;
}

.saas-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: transparent;
    color: var(--saas-muted);
}

.saas-footer small {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.saas-footer small::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--saas-accent);
}

@media (max-width: 991.98px) {
    .navbar .navbar-brand::before {
        display: none;
    }

    .navbar .nav-link {
        padding-left: 0.5rem;
    }

    .saas-summary-card {
        padding: 1.25rem;
    }
}

@media (max-width: 575.98px) {
    .saas-summary-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .badge-plan {
        font-size: 0.62rem;
    }
}