body.admin-shell {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgb(37 99 235 / 0.18), transparent),
        linear-gradient(180deg, #0f172a 0%, #1e293b 45%, #0f172a 100%);
    color: #e2e8f0;
    padding: 1.5rem 1rem 2.5rem;
}

.admin-wrap {
    width: 100%;
    max-width: 32rem;
    margin: 0 auto;
}

.admin-brand {
    text-align: center;
    margin-bottom: 1.25rem;
}

.admin-brand__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgb(255 255 255 / 0.06);
    border: 1px solid rgb(255 255 255 / 0.1);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #94a3b8;
}

.admin-brand h1 {
    margin: 0.75rem 0 0.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #f8fafc;
    letter-spacing: -0.02em;
}

.admin-brand p {
    margin: 0;
    font-size: 0.875rem;
    color: #94a3b8;
}

.admin-card {
    background: rgb(15 23 42 / 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgb(148 163 184 / 0.15);
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.45);
    padding: 1.5rem;
}

.admin-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgb(148 163 184 / 0.12);
}

.admin-top h2 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 700;
    color: #f1f5f9;
}

.admin-top__sub {
    margin: 0.25rem 0 0;
    font-size: 0.75rem;
    color: #64748b;
}

.admin-logout {
    flex-shrink: 0;
    padding: 0.45rem 0.85rem;
    border-radius: 0.5rem;
    border: 1px solid rgb(248 113 113 / 0.35);
    background: rgb(127 29 29 / 0.25);
    color: #fecaca;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.admin-logout:hover {
    background: rgb(127 29 29 / 0.45);
    border-color: rgb(248 113 113 / 0.55);
}

.admin-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.admin-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    border-radius: 0.625rem;
    border: 1px solid rgb(148 163 184 / 0.2);
    background: rgb(30 41 59 / 0.6);
    color: #cbd5e1;
    font-size: 0.8125rem;
    font-weight: 600;
    text-decoration: none;
    transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.admin-tab:hover {
    border-color: rgb(96 165 250 / 0.45);
    color: #f1f5f9;
}

.admin-tab--active {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-color: #3b82f6;
    color: #fff;
    box-shadow: 0 4px 14px rgb(37 99 235 / 0.35);
}

.admin-alert {
    padding: 0.75rem 0.85rem;
    border-radius: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.admin-alert--error {
    background: rgb(127 29 29 / 0.35);
    border-color: rgb(248 113 113 / 0.35);
    color: #fecaca;
}

.admin-alert--success {
    background: rgb(6 78 59 / 0.35);
    border-color: rgb(52 211 153 / 0.35);
    color: #a7f3d0;
}

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.admin-field {
    display: block;
    margin-bottom: 0.85rem;
}

.admin-field span {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #64748b;
    margin-bottom: 0.35rem;
}

.admin-field input {
    width: 100%;
    box-sizing: border-box;
    padding: 0.7rem 0.85rem;
    border-radius: 0.5rem;
    border: 1px solid rgb(148 163 184 / 0.22);
    background: rgb(15 23 42 / 0.9);
    color: #f8fafc;
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.admin-field input::placeholder {
    color: #475569;
}

.admin-field input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.25);
}

.admin-field--mono input {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    letter-spacing: 0.02em;
}

.admin-actions {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    margin-top: 0.5rem;
}

.admin-btn {
    width: 100%;
    padding: 0.8rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.admin-btn:active {
    transform: scale(0.99);
}

.admin-btn--primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: #fff;
    box-shadow: 0 4px 14px rgb(37 99 235 / 0.4);
}

.admin-btn--primary:hover {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.admin-preview {
    display: block;
    text-align: center;
    padding: 0.65rem;
    border-radius: 0.5rem;
    border: 1px dashed rgb(148 163 184 / 0.25);
    color: #94a3b8;
    font-size: 0.8125rem;
    text-decoration: none;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.admin-preview:hover {
    border-color: rgb(96 165 250 / 0.5);
    color: #e2e8f0;
}

.admin-preview strong {
    color: #60a5fa;
    font-weight: 600;
}

.admin-login-card {
    max-width: 22rem;
    margin: 0 auto;
}

.admin-login-card .admin-brand {
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    body.admin-shell {
        padding-top: 3rem;
    }

    .admin-wrap {
        max-width: 36rem;
    }
}