:root {
    --admin-primary: #4f46e5;
    --admin-primary-dark: #3730a3;
    --admin-ink: #172033;
    --admin-muted: #667085;
    --admin-border: #e4e7ec;
    --admin-surface: #ffffff;
    --admin-bg: #f4f6fa;
}

body.admin-body {
    min-height: 100vh;
    color: var(--admin-ink);
    background: var(--admin-bg);
}

.admin-navbar {
    background: linear-gradient(115deg, #111827 0%, #273353 58%, #3730a3 100%);
    box-shadow: 0 8px 24px rgba(17, 24, 39, .15);
}

.admin-navbar .navbar-brand {
    min-width: 220px;
    line-height: 1.05;
}

.admin-navbar .navbar-brand small {
    display: block;
    margin-top: .2rem;
    color: rgba(255, 255, 255, .62);
    font-size: .7rem;
    font-weight: 500;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.admin-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    color: #fff;
    background: rgba(255, 255, 255, .16);
    border: 1px solid rgba(255, 255, 255, .24);
    font-size: .85rem;
    font-weight: 800;
    letter-spacing: .04em;
}

.admin-navbar .nav-link {
    border-radius: .55rem;
    color: rgba(255, 255, 255, .76);
    font-size: .92rem;
    font-weight: 550;
}

.admin-navbar .nav-link:hover,
.admin-navbar .nav-link:focus,
.admin-navbar .nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, .12);
}

.admin-version-switcher .input-group {
    flex-wrap: nowrap;
}

.admin-version-switcher .input-group-text,
.admin-version-switcher .form-select {
    min-height: 34px;
    border-color: rgba(255, 255, 255, .24);
}

.admin-version-switcher .input-group-text {
    color: rgba(255, 255, 255, .82);
    background: rgba(255, 255, 255, .1);
}

.admin-version-switcher .form-select {
    width: auto;
    min-width: 86px;
    color: #172033;
    background-color: rgba(255, 255, 255, .96);
    font-weight: 700;
}

.admin-main {
    padding-top: 1.6rem;
    padding-bottom: 1rem;
}

.admin-page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.35rem;
}

.admin-page-head h1 {
    margin: 0;
    font-size: clamp(1.45rem, 3vw, 2rem);
    font-weight: 750;
    letter-spacing: -.025em;
}

.admin-page-head p {
    margin: .35rem 0 0;
    color: var(--admin-muted);
}

.admin-page-actions {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap;
}

.admin-card {
    height: 100%;
    border: 1px solid var(--admin-border);
    border-radius: 1rem;
    background: var(--admin-surface);
    box-shadow: 0 8px 24px rgba(16, 24, 40, .045);
}

.admin-card .card-header {
    padding: 1rem 1.15rem;
    border-bottom-color: var(--admin-border);
    background: transparent;
    font-weight: 700;
}

.admin-card .card-body {
    padding: 1.15rem;
}

.admin-stat {
    position: relative;
    overflow: hidden;
}

.admin-stat::after {
    content: "";
    position: absolute;
    right: -18px;
    bottom: -25px;
    width: 86px;
    height: 86px;
    border-radius: 50%;
    background: rgba(79, 70, 229, .07);
}

.admin-stat-label {
    color: var(--admin-muted);
    font-size: .82rem;
    font-weight: 650;
    letter-spacing: .035em;
    text-transform: uppercase;
}

.admin-stat-value {
    margin-top: .3rem;
    font-size: 2rem;
    font-weight: 780;
    line-height: 1;
}

.admin-quick-link {
    display: block;
    height: 100%;
    padding: 1.1rem;
    border: 1px solid var(--admin-border);
    border-radius: .9rem;
    color: var(--admin-ink);
    background: #fff;
    text-decoration: none;
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}

.admin-quick-link:hover {
    transform: translateY(-2px);
    border-color: #c7d2fe;
    color: var(--admin-primary-dark);
    box-shadow: 0 10px 25px rgba(16, 24, 40, .08);
}

.admin-quick-link strong {
    display: block;
    margin-bottom: .25rem;
}

.admin-quick-link span {
    color: var(--admin-muted);
    font-size: .9rem;
}

.admin-table-card {
    overflow: hidden;
}

.admin-table-card .table {
    margin-bottom: 0;
}

.admin-table-card .table > :not(caption) > * > * {
    padding: .82rem 1rem;
    border-bottom-color: #edf0f4;
    vertical-align: middle;
}

.admin-table-card thead th {
    color: var(--admin-muted);
    background: #fafbfc;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .035em;
    text-transform: uppercase;
    white-space: nowrap;
}

.admin-empty {
    padding: 2.5rem 1.25rem;
    color: var(--admin-muted);
    text-align: center;
}

.admin-code {
    color: #344054;
    background: #f2f4f7;
    border: 1px solid #e4e7ec;
    border-radius: .4rem;
    padding: .18rem .4rem;
    font-size: .82rem;
}

.admin-footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1.25rem 0 .5rem;
    border-top: 1px solid var(--admin-border);
    color: var(--admin-muted);
    font-size: .82rem;
}

.btn-primary {
    --bs-btn-bg: var(--admin-primary);
    --bs-btn-border-color: var(--admin-primary);
    --bs-btn-hover-bg: var(--admin-primary-dark);
    --bs-btn-hover-border-color: var(--admin-primary-dark);
    --bs-btn-active-bg: var(--admin-primary-dark);
    --bs-btn-active-border-color: var(--admin-primary-dark);
}

.form-control:focus,
.form-select:focus,
.form-check-input:focus {
    border-color: #a5b4fc;
    box-shadow: 0 0 0 .22rem rgba(79, 70, 229, .13);
}

.form-check-input:checked {
    border-color: var(--admin-primary);
    background-color: var(--admin-primary);
}

.admin-auth-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 15% 10%, rgba(129, 140, 248, .24), transparent 33%),
        linear-gradient(135deg, #111827 0%, #273353 48%, #3730a3 100%);
}

.admin-auth-card {
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 1.2rem;
    box-shadow: 0 28px 75px rgba(0, 0, 0, .28);
}

.admin-auth-brand {
    color: #fff;
    text-align: center;
}

.admin-auth-brand p {
    color: rgba(255, 255, 255, .66);
}

.fm-editor {
    min-height: 580px;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: .82rem;
    line-height: 1.45;
    tab-size: 4;
    white-space: pre;
}

.fm-file-name {
    word-break: break-word;
}

@media (max-width: 1199.98px) {
    .admin-navbar .navbar-collapse {
        padding-top: .85rem;
    }

    .admin-version-switcher {
        max-width: 150px;
    }

    .admin-navbar .nav-link {
        padding-left: .75rem;
        padding-right: .75rem;
    }
}

@media (max-width: 767.98px) {
    .admin-page-head {
        display: block;
    }

    .admin-page-actions {
        margin-top: .85rem;
    }

    .admin-footer {
        display: block;
    }

    .admin-footer span {
        display: block;
        margin-bottom: .25rem;
    }

    .fm-editor {
        min-height: 430px;
        font-size: .75rem;
    }
}