:root {
    --admin-bg: #f3f6fb;
    --admin-panel: #ffffff;
    --admin-line: #e3eaf5;
    --admin-text: #16233b;
    --admin-muted: #71809c;
    --admin-accent: #2878ff;
    --admin-accent-soft: #eef4ff;
    --admin-shadow: 0 24px 80px rgba(15, 23, 42, 0.08);
    --admin-radius: 24px;
}

* { box-sizing: border-box; }

body.admin-body,
body.admin-login-body {
    margin: 0;
    color: var(--admin-text);
    font-family: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(40, 120, 255, 0.08), transparent 26%),
        linear-gradient(180deg, #f8fbff 0%, var(--admin-bg) 100%);
}

.admin-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    padding: 28px 18px;
    background: rgba(249, 251, 255, 0.92);
    border-right: 1px solid var(--admin-line);
    backdrop-filter: blur(14px);
}

.admin-brand,
.admin-login-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.admin-brand__badge {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #2878ff, #68a4ff);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 14px 28px rgba(40, 120, 255, 0.2);
}

.admin-brand__title {
    font-weight: 800;
}

.admin-brand__meta,
.admin-topbar__eyebrow,
.admin-user {
    color: var(--admin-muted);
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 28px;
}

.admin-nav a {
    color: var(--admin-text);
    text-decoration: none;
    padding: 12px 14px;
    border-radius: 14px;
    transition: all 0.2s ease;
}

.admin-nav a:hover,
.admin-nav a.is-active {
    background: var(--admin-accent-soft);
    color: var(--admin-accent);
}

.admin-main {
    padding: 26px 28px 36px;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.admin-topbar__title {
    margin: 6px 0 0;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.admin-topbar__actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-alert {
    border: 0;
    border-radius: 16px;
}

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

.admin-stat-card,
.admin-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(227, 234, 245, 0.8);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
}

.admin-stat-card {
    padding: 22px 24px;
}

.admin-stat-card__label {
    color: var(--admin-muted);
    margin-bottom: 10px;
}

.admin-stat-card__value {
    font-size: 1.6rem;
    font-weight: 800;
}

.admin-stat-card--action {
    display: grid;
    place-items: center;
}

.admin-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr);
    gap: 18px;
}

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

.admin-card {
    padding: 22px;
}

.admin-card--nested {
    box-shadow: none;
    background: #f8fbff;
    padding: 18px;
}

.admin-card__header {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-start;
    margin-bottom: 20px;
}

.admin-card__header h2 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 800;
}

.admin-card__header span {
    color: var(--admin-muted);
    font-size: 0.95rem;
}

.admin-actions {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.admin-actions form {
    margin: 0;
}

.admin-table code,
.admin-list code,
.admin-info-list strong {
    color: var(--admin-accent);
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.admin-list__item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 16px;
    background: #f8fbff;
    text-decoration: none;
    color: inherit;
}

.admin-form-shell {
    display: block;
}

.admin-editor-card {
    border: 1px solid var(--admin-line);
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
}

.EasyMDEContainer .CodeMirror {
    border: 0;
    min-height: 560px;
    font-size: 15px;
}

.EasyMDEContainer .editor-toolbar {
    border: 0;
    border-bottom: 1px solid var(--admin-line);
}

.EasyMDEContainer .editor-preview,
.EasyMDEContainer .editor-preview-side {
    padding: 20px;
    background: #fff;
}

.admin-form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 22px;
}

.admin-tips {
    padding: 16px;
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--admin-line);
}

.admin-tips ul {
    margin: 12px 0 0;
    padding-left: 18px;
}

.admin-media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
}

.admin-media-item {
    overflow: hidden;
    border-radius: 18px;
    background: #f8fbff;
    border: 1px solid var(--admin-line);
}

.admin-media-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.admin-media-item__body {
    padding: 14px;
}

.admin-info-list {
    display: grid;
    gap: 14px;
}

.admin-info-list div {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 14px;
    background: #f8fbff;
}

.admin-settings-form {
    max-width: 520px;
}

.admin-login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px;
}

.admin-login-card {
    width: min(100%, 480px);
    padding: 30px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(227, 234, 245, 0.82);
    box-shadow: var(--admin-shadow);
}

.admin-login-brand {
    margin-bottom: 26px;
}

.admin-login-brand h1 {
    margin: 0 0 4px;
    font-size: 1.7rem;
    font-weight: 800;
}

.admin-login-brand p,
.admin-login-tip {
    color: var(--admin-muted);
}

.admin-login-tip {
    margin-top: 16px;
    font-size: 0.95rem;
}

@media (max-width: 1199.98px) {
    .admin-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .admin-grid,
    .admin-grid--single {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 991.98px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--admin-line);
    }
}

@media (max-width: 767.98px) {
    .admin-main {
        padding: 20px 16px 28px;
    }

    .admin-topbar,
    .admin-form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-stats {
        grid-template-columns: 1fr;
    }
}