:root {
    --primary: #1677FF;
    --surface: #FFFFFF;
    --soft: #F5F7FA;
    --text: #333333;
    --muted: #667085;
    --border: #E5E6EB;
    --danger: #FF4D4F;
    --success: #52C41A;
    --shadow: 0 14px 36px rgba(19, 33, 68, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100svh;
    background: var(--soft);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    letter-spacing: 0;
}

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

button {
    border: 0;
    cursor: pointer;
}

.admin-shell {
    min-height: 100svh;
    display: grid;
    grid-template-columns: 236px minmax(0, 1fr);
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100svh;
    padding: 20px 14px;
    background: var(--surface);
    border-right: 1px solid var(--border);
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 8px 18px;
}

.admin-brand span {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
}

.admin-brand strong {
    font-size: 18px;
}

.sidebar nav {
    display: grid;
    gap: 4px;
}

.sidebar nav button,
.front-link {
    min-height: 42px;
    padding: 0 12px;
    border-radius: 10px;
    background: transparent;
    color: var(--muted);
    text-align: left;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.sidebar nav button.active,
.sidebar nav button:hover,
.front-link:hover {
    background: #E8F2FF;
    color: var(--primary);
}

.front-link {
    margin-top: 18px;
}

main {
    padding: 22px 22px 54px;
}

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

.admin-top p,
.login-card p {
    margin: 0 0 4px;
    color: var(--muted);
}

.admin-top h1,
.login-card h1 {
    margin: 0;
}

.admin-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-user button,
.toolbar button,
.pager button,
.save-btn,
.login-card button {
    min-height: 40px;
    border-radius: 10px;
    padding: 0 14px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
}

.login-card {
    max-width: 420px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 24px;
    margin: 10vh auto;
}

label {
    display: grid;
    gap: 8px;
    color: var(--muted);
    margin: 14px 0;
}

input,
textarea,
select {
    width: 100%;
    min-height: 42px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    padding: 0 12px;
    outline: none;
}

textarea {
    min-height: 110px;
    padding: 10px 12px;
    resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(22, 119, 255, .12);
}

.toolbar {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) auto auto;
    gap: 10px;
    margin-bottom: 14px;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 14px;
}

.kpi {
    padding: 18px;
    border-radius: 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.kpi span {
    color: var(--muted);
    font-size: 13px;
}

.kpi strong {
    display: block;
    margin-top: 8px;
    font-size: 28px;
}

.table-panel {
    border-radius: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table-panel h2 {
    margin: 0;
    padding: 16px;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
}

.table-wrap {
    overflow: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

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

th {
    color: var(--muted);
    background: #FAFBFC;
    white-space: nowrap;
}

td {
    max-width: 360px;
}

.row-actions {
    display: flex;
    gap: 8px;
}

.row-actions button {
    min-height: 32px;
    border-radius: 8px;
    padding: 0 10px;
    background: #E8F2FF;
    color: var(--primary);
}

.row-actions button.danger {
    background: #FFECEC;
    color: var(--danger);
}

.pager {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
}

.drawer {
    position: fixed;
    inset: 0;
    z-index: 60;
}

.drawer-mask {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, .36);
}

.drawer-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(680px, 96vw);
    height: 100%;
    background: var(--surface);
    padding: 18px;
    overflow: auto;
    box-shadow: -20px 0 70px rgba(15, 23, 42, .18);
    animation: drawerIn .22s ease both;
}

@keyframes drawerIn {
    from {
        transform: translateX(32px);
        opacity: .5;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.drawer-head h2 {
    margin: 0;
}

.drawer-head button {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--soft);
    font-size: 22px;
}

.option-editor {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 8px;
    margin-bottom: 8px;
}

.toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    z-index: 100;
    transform: translateX(-50%) translateY(12px);
    padding: 12px 16px;
    border-radius: 12px;
    background: rgba(16, 21, 34, .92);
    color: #fff;
    opacity: 0;
    transition: opacity .18s ease, transform .18s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.admin-footer {
    position: fixed;
    right: 22px;
    bottom: 12px;
    z-index: 20;
    color: var(--muted);
    font-size: 12px;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 12px;
}

.hidden {
    display: none !important;
}

@media (max-width: 860px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .sidebar nav {
        grid-template-columns: repeat(2, 1fr);
    }

    main {
        padding: 14px;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .toolbar {
        grid-template-columns: 1fr;
    }
}