:root {
    --bg: #f3f5f8;
    --surface: #fff;
    --surface-alt: #f7f8fa;
    --border: #e1e5eb;
    --text: #1d2433;
    --muted: #6b7385;
    --primary: #1f5eff;
    --primary-dark: #1848c7;
    --ok: #138a4a;
    --warn: #b7791f;
    --danger: #d23b3b;
    --sidebar: #141b2d;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Vazirmatn, "Segoe UI", Tahoma, sans-serif;
    font-size: 14px;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

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

.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--sidebar);
    color: #cfd6e4;
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
}
.sidebar .brand { font-size: 18px; font-weight: 700; color: #fff; margin: 0 8px 4px; }
.sidebar .brand-sub { font-size: 12px; color: #8b95aa; margin: 0 8px 20px; }
.sidebar nav a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    color: #cfd6e4;
    margin-bottom: 2px;
}
.sidebar nav a:hover { background: rgba(255,255,255,.06); text-decoration: none; }
.sidebar nav a.active { background: var(--primary); color: #fff; }
.sidebar nav .section { font-size: 11px; color: #707a90; margin: 16px 12px 6px; }
.sidebar .logout { margin-top: auto; }
.sidebar .logout button { width: 100%; background: transparent; border: 1px solid #39425a; color: #cfd6e4; }

main { flex: 1; padding: 24px 28px; min-width: 0; }

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head h1 { font-size: 20px; margin: 0; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
    margin-bottom: 18px;
}
.card h2 { font-size: 15px; margin: 0 0 12px; }

.grid { display: grid; gap: 14px; }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; }
.stat .value { font-size: 24px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 13px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: right; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--surface-alt); }
tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; }

.ltr, code, .mono { direction: ltr; unicode-bidi: embed; font-family: Consolas, "Courier New", monospace; }
code { background: var(--surface-alt); padding: 1px 6px; border-radius: 4px; font-size: 13px; }

label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 13px; }
.field { margin-bottom: 14px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 3px; }

input[type=text], input[type=email], input[type=password], input[type=number], input[type=url], input[type=time],
input[type=file], select, textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font: inherit;
    background: #fff;
    color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(31,94,255,.25); border-color: var(--primary); }
textarea.key { font-family: Consolas, monospace; font-size: 12px; direction: ltr; height: 120px; }

.checks { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.checks label { font-weight: normal; display: flex; align-items: center; gap: 5px; margin: 0; }

button, .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}
button:hover, .btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-alt); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: #b02e2e; }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
form.inline { display: inline; }

.badge { display: inline-block; padding: 1px 10px; border-radius: 20px; font-size: 12px; white-space: nowrap; }
.badge-ok { background: #e3f5ea; color: var(--ok); }
.badge-warn { background: #fdf3e1; color: var(--warn); }
.badge-danger { background: #fde8e8; color: var(--danger); }
.badge-muted { background: #eceff3; color: var(--muted); }

.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }
.alert-success { background: #e3f5ea; color: #0e6b39; border: 1px solid #bfe6cf; }
.alert-error { background: #fde8e8; color: #9b2222; border: 1px solid #f5c5c5; }
.alert ul { margin: 0; padding-right: 18px; }

.search { display: flex; gap: 8px; margin-bottom: 14px; }
.search input, .search select { max-width: 320px; }

.pagination { display: flex; gap: 4px; margin-top: 14px; flex-wrap: wrap; }
.pagination a, .pagination span { padding: 4px 10px; border: 1px solid var(--border); border-radius: 6px; background: #fff; }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

.kv { display: grid; grid-template-columns: 160px 1fr; gap: 6px 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.ad-preview {
    display: flex; align-items: center; gap: 12px;
    background: var(--surface-alt); border: 1px solid var(--border); border-radius: 8px;
    height: 80px; padding: 6px 12px; overflow: hidden;
}
.ad-preview img { max-height: 66px; max-width: 360px; }
.ad-thumb { max-height: 40px; max-width: 160px; border-radius: 4px; }

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 380px; }

@media (max-width: 800px) {
    .layout { flex-direction: column; }
    .sidebar { width: 100%; }
    main { padding: 16px; }
    .kv { grid-template-columns: 1fr; }
}