:root {
    --admin-bg: #f5f7fb;
    --admin-panel: #ffffff;
    --admin-panel-soft: #f9fbff;
    --admin-text: #101828;
    --admin-muted: #667085;
    --admin-border: #dfe7f3;
    --admin-blue: #248af6;
    --admin-blue-dark: #0b5eb8;
    --admin-red: #cf2e2e;
    --admin-green: #078a4f;
    --admin-shadow: 0 16px 38px rgba(16, 24, 40, .08);
    --admin-radius: 10px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--admin-text);
    background: var(--admin-bg);
    font-family: Arial, sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

[hidden] {
    display: none !important;
}

.admin-auth-page {
    min-height: 100vh;
    background:
        linear-gradient(135deg, rgba(36, 138, 246, .12), transparent 36%),
        linear-gradient(315deg, rgba(7, 138, 79, .12), transparent 34%),
        var(--admin-bg);
}

.admin-auth {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 28px;
}

.admin-auth__panel {
    width: min(760px, 100%);
    padding: 32px;
    border: 1px solid var(--admin-border);
    border-radius: 16px;
    background: var(--admin-panel);
    box-shadow: var(--admin-shadow);
}

.admin-auth__panel--compact {
    width: min(460px, 100%);
}

.admin-auth__brand,
.admin-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.admin-auth__brand > span,
.admin-logo > span {
    display: grid;
    width: 34px;
    height: 28px;
    place-items: center;
    border-radius: 6px;
    background: #e3342f;
    color: #fff;
    font-size: 11px;
    font-weight: 800;
}

.admin-auth__brand strong,
.admin-logo strong {
    display: block;
    font-size: 18px;
    line-height: 22px;
}

.admin-auth__brand small {
    display: block;
    margin-top: 2px;
    color: var(--admin-muted);
    font-size: 13px;
}

.admin-auth h1 {
    margin: 28px 0 8px;
    font-size: 34px;
    line-height: 42px;
}

.admin-auth p {
    margin: 0 0 24px;
    color: var(--admin-muted);
    line-height: 24px;
}

.admin-page {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    min-height: 100vh;
}

.admin-sidebar {
    position: sticky;
    top: 0;
    display: flex;
    height: 100vh;
    flex-direction: column;
    gap: 24px;
    padding: 24px;
    border-right: 1px solid var(--admin-border);
    background: var(--admin-panel);
}

.admin-logo {
    padding: 8px 4px;
}

.admin-nav {
    display: grid;
    gap: 6px;
}

.admin-nav a,
.admin-sidebar__foot a {
    display: flex;
    min-height: 42px;
    align-items: center;
    padding: 0 12px;
    border-radius: 8px;
    color: var(--admin-muted);
    font-size: 14px;
    font-weight: 700;
}

.admin-nav a:hover,
.admin-nav a.is-active {
    background: #edf5ff;
    color: var(--admin-blue-dark);
}

.admin-sidebar__foot {
    display: grid;
    gap: 4px;
    margin-top: auto;
}

.admin-main {
    min-width: 0;
    padding: 30px;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 24px;
}

.admin-eyebrow {
    margin: 0 0 4px;
    color: var(--admin-blue-dark);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.admin-topbar h1 {
    margin: 0;
    font-size: 30px;
    line-height: 38px;
}

.admin-user {
    padding: 10px 14px;
    border: 1px solid var(--admin-border);
    border-radius: 999px;
    background: var(--admin-panel);
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 700;
}

.admin-alert {
    margin-bottom: 18px;
    padding: 12px 14px;
    border: 1px solid #c7eadb;
    border-radius: var(--admin-radius);
    background: #effaf5;
    color: var(--admin-green);
    font-size: 14px;
    font-weight: 700;
}

.admin-alert p {
    margin: 0;
}

.admin-alert p + p {
    margin-top: 6px;
}

.admin-alert--error {
    border-color: #ffd0d0;
    background: #fff3f3;
    color: var(--admin-red);
}

.admin-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.admin-metrics article,
.admin-card {
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    background: var(--admin-panel);
    box-shadow: 0 8px 22px rgba(16, 24, 40, .04);
}

.admin-metrics article {
    padding: 18px;
}

.admin-metrics span,
.admin-metrics small {
    display: block;
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 700;
}

.admin-metrics strong {
    display: block;
    margin: 10px 0 4px;
    font-size: 32px;
    line-height: 38px;
}

.admin-card {
    padding: 20px;
}

.admin-card--narrow {
    max-width: 920px;
}

.admin-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.admin-card__head--compact {
    margin-bottom: 0;
}

.admin-card__head h2 {
    margin: 0;
    font-size: 20px;
    line-height: 28px;
}

.admin-card__head span {
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 700;
}

.admin-grid {
    display: grid;
    gap: 16px;
}

.admin-grid--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-grid--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-grid--aside {
    grid-template-columns: minmax(260px, .36fr) minmax(0, .64fr);
    align-items: start;
}

.admin-grid--stretch {
    align-items: stretch;
}

.admin-form {
    display: grid;
    gap: 16px;
}

.admin-field {
    display: grid;
    gap: 8px;
}

.admin-field span,
.admin-check span {
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 800;
}

.admin-field input,
.admin-field select,
.admin-field textarea {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
    color: var(--admin-text);
    outline: none;
}

.admin-color-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.admin-ad-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.admin-field--color input[type="color"] {
    height: 46px;
    padding: 4px;
    cursor: pointer;
}

.admin-field textarea {
    resize: vertical;
    line-height: 22px;
}

.admin-code {
    font-family: Consolas, "Courier New", monospace;
    font-size: 13px;
}

.admin-field input:focus,
.admin-field select:focus,
.admin-field textarea:focus {
    border-color: var(--admin-blue);
    box-shadow: 0 0 0 4px rgba(36, 138, 246, .13);
}

.admin-check {
    display: flex;
    min-height: 44px;
    align-items: center;
    gap: 10px;
}

.admin-check--box {
    align-self: end;
    padding: 10px 12px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
}

.admin-check--stacked {
    display: grid;
    min-height: 112px;
    grid-template-columns: auto 1fr;
    align-items: start;
    gap: 6px 10px;
}

.admin-check--stacked small {
    grid-column: 2;
    color: var(--admin-muted);
    font-size: 12px;
    font-weight: 600;
    line-height: 17px;
}

.admin-check input {
    width: 18px;
    height: 18px;
    accent-color: var(--admin-blue);
}

.admin-button {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 16px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 800;
}

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

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

.admin-button--secondary,
.admin-button--ghost {
    border-color: var(--admin-border);
    background: #fff;
    color: var(--admin-text);
}

.admin-button--danger {
    border-color: #ffd0d0;
    background: #fff4f4;
    color: var(--admin-red);
}

.admin-button--full {
    width: 100%;
}

.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.admin-divider {
    height: 1px;
    background: var(--admin-border);
}

.admin-segment {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding: 4px;
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    background: var(--admin-panel-soft);
}

.admin-segment label {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    color: var(--admin-muted);
    font-weight: 800;
}

.admin-segment label:has(input:checked) {
    background: #fff;
    color: var(--admin-blue-dark);
    box-shadow: 0 2px 8px rgba(16, 24, 40, .08);
}

.admin-table-wrap {
    overflow-x: auto;
}

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

.admin-table th,
.admin-table td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--admin-border);
    text-align: left;
    font-size: 14px;
}

.admin-table th {
    color: var(--admin-muted);
    font-size: 12px;
    text-transform: uppercase;
}

.admin-list,
.admin-tool-list {
    display: grid;
    gap: 8px;
}

.admin-list__item,
.admin-tool-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
}

.admin-tool-list a:hover,
.admin-tool-list a.is-active {
    border-color: var(--admin-blue);
    background: #f0f7ff;
}

.admin-tool-list span,
.admin-list__item strong {
    font-size: 14px;
}

.admin-tool-list small,
.admin-list__item span,
.admin-empty {
    color: var(--admin-muted);
    font-size: 13px;
}

.admin-editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px;
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    background: var(--admin-panel-soft);
}

.admin-editor-toolbar button {
    min-height: 34px;
    padding: 0 10px;
    border: 1px solid var(--admin-border);
    border-radius: 7px;
    background: #fff;
    color: var(--admin-text);
    font-size: 13px;
    font-weight: 800;
}

.admin-editor-toolbar button:hover {
    border-color: var(--admin-blue);
    color: var(--admin-blue-dark);
}

.admin-preview {
    margin-top: 18px;
    padding: 18px;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    background: #fff;
}

.admin-preview h2,
.admin-preview h3 {
    margin-top: 0;
}

.admin-inline-delete {
    margin-top: 16px;
}

.admin-system-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px;
    border: 1px solid #c7eadb;
    border-radius: 8px;
    background: #effaf5;
}

.admin-system-card strong {
    color: var(--admin-green);
}

.admin-system-card span {
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 800;
}

@media (max-width: 1100px) {
    .admin-page {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: static;
        height: auto;
    }

    .admin-nav {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

    .admin-sidebar__foot {
        display: flex;
    }

    .admin-grid--aside,
    .admin-ad-grid,
    .admin-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .admin-main,
    .admin-sidebar,
    .admin-auth {
        padding: 18px;
    }

    .admin-auth__panel {
        padding: 22px;
    }

    .admin-nav,
    .admin-color-grid,
    .admin-ad-grid,
    .admin-grid--two,
    .admin-grid--three,
    .admin-grid--aside,
    .admin-metrics {
        grid-template-columns: 1fr;
    }

    .admin-topbar,
    .admin-card__head,
    .admin-list__item,
    .admin-tool-list a,
    .admin-system-card {
        align-items: flex-start;
        flex-direction: column;
    }
}