.backend-shell,
.login-page {
    color-scheme: light;
    --backend-bg: #f7f7f4;
    --backend-surface: #ffffff;
    --backend-surface-soft: #f0f0ec;
    --backend-surface-hover: #e8e8e2;
    --backend-ink: #181817;
    --backend-muted: #686862;
    --backend-line: #d8d8d0;
    --backend-line-strong: #b9b9ae;
    --backend-accent: #20201d;
    --backend-focus: #1d4ed8;
    --backend-danger: #9f1239;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.backend-shell {
    background: var(--backend-bg);
    color: var(--backend-ink);
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    min-height: 100vh;
}

.backend-shell a,
.login-page a {
    color: inherit;
}

.backend-shell button,
.login-page button,
.button-link {
    align-items: center;
    background: var(--backend-accent);
    border: 1px solid var(--backend-accent);
    border-radius: 4px;
    color: #ffffff;
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-weight: 650;
    justify-content: center;
    min-height: 42px;
    padding: 10px 14px;
    text-decoration: none;
}

.backend-shell button:hover,
.login-page button:hover,
.button-link:hover {
    background: #000000;
    border-color: #000000;
}

.button-link.secondary,
.secondary-button {
    background: var(--backend-surface);
    border-color: var(--backend-line);
    color: var(--backend-ink);
}

.button-link.secondary:hover,
.secondary-button:hover {
    background: var(--backend-surface-hover);
    border-color: var(--backend-line-strong);
    color: var(--backend-ink);
}

.backend-sidebar {
    background: var(--backend-surface);
    border-right: 1px solid var(--backend-line);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 20px 14px;
}

.backend-brand {
    border-bottom: 1px solid var(--backend-line);
    font-size: 15px;
    font-weight: 720;
    letter-spacing: 0.06em;
    padding: 0 6px 18px;
    text-transform: uppercase;
}

.backend-primary-nav,
.backend-bottom-nav {
    display: grid;
    gap: 6px;
}

.backend-primary-nav {
    align-content: start;
}

.backend-bottom-nav {
    border-top: 1px solid var(--backend-line);
    margin-top: auto;
    padding-top: 12px;
}

.backend-sidebar a,
.nav-logout {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: 4px;
    box-sizing: border-box;
    color: var(--backend-ink);
    display: flex;
    font: inherit;
    min-height: 40px;
    max-width: 100%;
    overflow: hidden;
    padding: 0 12px;
    text-align: left;
    text-decoration: none;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
}

.backend-sidebar a:hover,
.nav-logout:hover,
.backend-primary-nav a {
    background: var(--backend-surface-soft);
}

.backend-sidebar-scrim,
.backend-nav-toggle,
.burger {
    display: none;
}

.settings-tabs,
.cms-tabs,
.admin-start {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 22px;
}

.settings-tabs a,
.cms-tabs button,
.secondary-button,
.create-button {
    background: var(--backend-surface);
    border: 1px solid var(--backend-line);
    border-radius: 4px;
    color: var(--backend-ink);
    cursor: pointer;
    font: inherit;
    min-height: 40px;
    padding: 9px 12px;
    text-decoration: none;
}

.settings-tabs a:hover,
.cms-tabs button:hover,
.cms-tabs button.active,
.create-button {
    background: var(--backend-surface-soft);
    border-color: var(--backend-line-strong);
}

.create-button {
    font-weight: 650;
}

.backend-main {
    min-width: 0;
}

.backend-topbar {
    align-items: center;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--backend-line);
    display: flex;
    gap: 12px;
    height: 58px;
    padding: 0 clamp(16px, 3vw, 28px);
    position: sticky;
    top: 0;
    z-index: 5;
}

.backend-content {
    padding: clamp(18px, 3vw, 32px);
}

.backend-content h1,
.editor-panel h2 {
    font-weight: 560;
    letter-spacing: 0;
    margin: 0 0 8px;
}

.backend-content p {
    color: var(--backend-muted);
    margin-top: 0;
}

.page-header {
    align-items: flex-start;
    display: flex;
    gap: 16px;
    justify-content: space-between;
    margin-bottom: 20px;
}

.data-table {
    background: var(--backend-surface);
    border: 1px solid var(--backend-line);
    border-collapse: collapse;
    width: 100%;
}

.data-table th,
.data-table td {
    border-bottom: 1px solid var(--backend-line);
    padding: 10px 12px;
    text-align: left;
}

.data-table th {
    background: var(--backend-surface-soft);
    font-size: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.editor-panel {
    background: var(--backend-surface);
    border: 1px solid var(--backend-line);
    border-radius: 6px;
    display: grid;
    gap: 14px;
    margin-bottom: 20px;
    padding: clamp(16px, 2.5vw, 22px);
}

.status-note {
    background: #eef7ee;
    border: 1px solid #bad7ba;
    border-radius: 4px;
    color: #1f4a26;
    margin: 0 0 18px;
    padding: 10px 12px;
}

.cms-workspace {
    align-items: start;
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
}

.cms-list {
    background: var(--backend-surface);
    border: 1px solid var(--backend-line);
    border-radius: 6px;
    display: grid;
    gap: 6px;
    max-height: calc(100vh - 180px);
    overflow: auto;
    padding: 10px;
    position: sticky;
    top: 76px;
}

.cms-list button {
    background: transparent;
    border: 0;
    border-radius: 4px;
    color: var(--backend-ink);
    cursor: pointer;
    display: grid;
    gap: 4px;
    justify-content: stretch;
    min-height: auto;
    padding: 10px;
    text-align: left;
}

.cms-list button.active,
.cms-list button:hover {
    background: var(--backend-surface-soft);
}

.cms-list small,
.media-grid small,
.login-brand p,
.login-kicker {
    color: var(--backend-muted);
}

.editor-title-row {
    align-items: center;
    display: flex;
    gap: 12px;
    justify-content: space-between;
}

.form-grid,
.nav-row {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.backend-shell label,
.login-page label {
    color: var(--backend-muted);
    display: grid;
    font-size: 13px;
    gap: 6px;
}

.backend-shell input,
.login-page input,
.backend-shell textarea,
.backend-shell select {
    background: #ffffff;
    border: 1px solid var(--backend-line);
    border-radius: 4px;
    color: var(--backend-ink);
    font: inherit;
    min-height: 42px;
    padding: 10px;
}

.backend-shell input:focus,
.login-page input:focus,
.backend-shell textarea:focus,
.backend-shell select:focus {
    border-color: var(--backend-focus);
}

.backend-shell textarea {
    min-height: 96px;
    resize: vertical;
}

.backend-shell fieldset,
.login-page fieldset {
    border: 1px solid var(--backend-line);
    border-radius: 4px;
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 12px;
}

.backend-shell legend {
    color: var(--backend-ink);
    font-weight: 650;
    padding: 0 6px;
}

.check-row {
    align-items: center;
    color: var(--backend-ink);
    display: flex;
    flex-direction: row;
    gap: 8px;
}

.check-row input {
    min-height: auto;
}

.gallery-picker,
.media-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.gallery-picker button,
.media-grid article {
    background: var(--backend-surface);
    border: 1px solid var(--backend-line);
    border-radius: 6px;
    color: var(--backend-ink);
    display: grid;
    gap: 8px;
    overflow: hidden;
    padding: 8px;
    text-align: left;
}

.gallery-picker button {
    cursor: pointer;
    justify-content: stretch;
}

.gallery-picker button.active {
    border-color: var(--backend-accent);
    box-shadow: inset 0 0 0 1px var(--backend-accent);
}

.gallery-picker img,
.media-grid img {
    aspect-ratio: 4 / 3;
    background: var(--backend-surface-soft);
    object-fit: cover;
    width: 100%;
}

.block-list {
    display: grid;
    gap: 10px;
}

.incomplete,
.form-error {
    color: var(--backend-danger);
    margin: 0;
}

.login-page {
    background:
        linear-gradient(90deg, rgba(24, 24, 23, 0.04) 1px, transparent 1px),
        linear-gradient(180deg, rgba(24, 24, 23, 0.04) 1px, transparent 1px),
        var(--backend-bg);
    background-size: 48px 48px;
    color: var(--backend-ink);
    display: grid;
    min-height: 100vh;
    padding: clamp(20px, 5vw, 72px);
    place-items: center;
}

.login-shell {
    align-items: center;
    display: grid;
    gap: clamp(24px, 6vw, 72px);
    grid-template-columns: minmax(0, 0.9fr) minmax(320px, 440px);
    width: min(960px, 100%);
}

.login-brand {
    border-left: 1px solid var(--backend-line-strong);
    display: grid;
    gap: 14px;
    padding-left: clamp(18px, 3vw, 28px);
}

.login-brand a {
    font-size: clamp(44px, 7vw, 76px);
    font-weight: 560;
    line-height: 0.95;
    text-decoration: none;
    text-transform: uppercase;
}

.login-brand p,
.login-kicker {
    font-size: 14px;
    margin: 0;
}

.login-panel {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--backend-line);
    border-radius: 6px;
    box-shadow: 0 18px 50px rgba(24, 24, 23, 0.08);
    display: grid;
    gap: 18px;
    padding: clamp(22px, 4vw, 34px);
}

.login-panel h1 {
    font-size: clamp(32px, 4vw, 46px);
    font-weight: 540;
    margin: 4px 0 0;
}

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

.login-panel input {
    min-height: 44px;
}

@media (max-width: 1100px) {
    .login-shell {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .login-brand a {
        font-size: clamp(38px, 13vw, 62px);
    }

    .backend-shell {
        grid-template-columns: 1fr;
    }

    .burger {
        align-items: center;
        border-radius: 4px;
        cursor: pointer;
        display: inline-flex;
        font-size: 22px;
        height: 40px;
        justify-content: center;
        width: 40px;
    }

    .burger:hover {
        background: var(--backend-surface-soft);
    }

    .backend-sidebar {
        box-shadow: 18px 0 60px rgba(24, 24, 23, 0.14);
        inset: 0 auto 0 0;
        position: fixed;
        transform: translateX(-100%);
        transition: transform .2s ease;
        width: 260px;
        z-index: 10;
    }

    .backend-nav-toggle:checked ~ .backend-sidebar {
        transform: translateX(0);
    }

    .backend-nav-toggle:checked ~ .backend-sidebar-scrim {
        background: rgba(24, 24, 23, 0.28);
        display: block;
        inset: 0;
        position: fixed;
        z-index: 9;
    }

    .cms-workspace {
        grid-template-columns: 1fr;
    }

    .cms-list {
        max-height: 280px;
        position: static;
    }
}

@media (max-width: 640px) {
    .page-header,
    .editor-title-row {
        display: grid;
    }

    .backend-content {
        padding: 16px;
    }

    .login-brand {
        border-left: 0;
        border-top: 1px solid var(--backend-line-strong);
        padding-left: 0;
        padding-top: 18px;
    }

    .login-panel {
        padding: 18px;
    }
}