:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --line: #dbe3ef;
    --text: #19212c;
    --muted: #6c7989;
    --primary: #1463ff;
    --primary-soft: #edf4ff;
    --danger: #d63c3c;
    --danger-soft: #fff1f1;
    --success: #18804b;
    --success-soft: #edf9f2;
    --shadow: 0 16px 40px rgba(17, 32, 63, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font: 14px/1.6 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

a {
    color: var(--primary);
    text-decoration: none;
}

img {
    max-width: 100%;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.admin-shell {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    padding: 24px 18px;
    background: linear-gradient(180deg, #0d1c33, #10284d);
    color: #fff;
}

.brand {
    margin-bottom: 20px;
    font-size: 24px;
    font-weight: 700;
}

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

.admin-sidebar nav a {
    padding: 11px 14px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.84);
}

.admin-sidebar nav a.active,
.admin-sidebar nav a:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.admin-main {
    padding: 24px;
}

.admin-topbar,
.card,
.stats-grid .stat,
.login-card,
.front-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    padding: 24px 28px;
    margin-bottom: 20px;
}

.admin-topbar h1,
.front-hero h1 {
    margin: 0;
    font-size: 28px;
}

.admin-topbar p,
.front-hero p,
.table-muted,
.help-text {
    margin: 6px 0 0;
    color: var(--muted);
}

.topbar-actions,
.toolbar,
.form-actions,
.stats-grid,
.grid-two,
.front-grid,
.meta-line {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.alert {
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: 12px;
}

.alert.success {
    color: var(--success);
    background: var(--success-soft);
}

.alert.danger {
    color: var(--danger);
    background: var(--danger-soft);
}

.card {
    padding: 22px;
    margin-bottom: 20px;
}

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

.stats-grid .stat {
    flex: 1 1 180px;
    padding: 20px;
}

.stats-grid strong {
    display: block;
    margin-top: 8px;
    font-size: 30px;
}

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

th,
td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}

th {
    text-align: left;
    color: var(--muted);
    font-weight: 600;
}

form.inline-form,
.toolbar form {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

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

input,
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
}

textarea {
    min-height: 140px;
    resize: vertical;
}

.grid-two > div {
    flex: 1 1 320px;
}

.btn,
.ghost-btn,
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn,
button {
    background: var(--primary);
    color: #fff;
}

.ghost-btn {
    border-color: var(--line);
    color: var(--text);
    background: #fff;
}

.danger-link {
    color: var(--danger);
}

button.danger-link,
.btn.danger-link {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

.admin-inline-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.admin-inline-actions form {
    display: flex;
    align-items: center;
    margin: 0;
}

.admin-inline-actions a,
.admin-inline-actions button,
.admin-main table td:last-child > a,
.admin-main table td:last-child > form button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    min-width: 54px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 11px;
    background: #fff;
    color: var(--text);
    line-height: 1;
    white-space: nowrap;
}

.admin-main table td:last-child > a + a {
    margin-left: 8px;
}

.admin-main table td:last-child > a.danger-link,
.admin-inline-actions a.danger-link,
.admin-inline-actions button.danger-link,
.admin-main table td:last-child > form button.danger-link {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

.batch-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #f8fbff;
}

.batch-toolbar .help-text {
    margin: 0;
}

.check-col {
    width: 86px;
    text-align: left;
}

.check-col input[type="checkbox"] {
    width: 16px;
    height: 16px;
    padding: 0;
    border-radius: 4px;
}

.check-all-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px;
    background:
        radial-gradient(circle at top right, rgba(20, 99, 255, 0.16), transparent 35%),
        radial-gradient(circle at bottom left, rgba(22, 176, 117, 0.12), transparent 35%),
        var(--bg);
}

.login-card {
    width: min(460px, 100%);
    padding: 28px;
}

.front-header {
    padding: 18px 0;
    background: linear-gradient(135deg, #08172f, #12335f);
}

.brand-line,
.front-nav {
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
}

.brand-line {
    justify-content: space-between;
    margin-bottom: 14px;
}

.front-brand,
.front-nav a {
    color: #fff;
}

.front-main {
    padding: 30px 0;
}

.front-hero {
    padding: 28px;
    margin-bottom: 20px;
    border-radius: 24px;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(11, 39, 82, 0.95), rgba(17, 97, 204, 0.9)),
        #0f2f60;
}

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

.front-card {
    flex: 1 1 320px;
    padding: 22px;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 12px;
}

.meta-line {
    color: var(--muted);
    font-size: 13px;
}

.pagination {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 18px;
}

@media (max-width: 900px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        padding-bottom: 10px;
    }

    .admin-main {
        padding: 14px;
    }

    .admin-topbar {
        padding: 18px;
    }
}