:root {
    --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue',
        Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
    --bg: #f6f7fb;
    --panel: #ffffff;
    --panel-2: #f5f6fa;
    --border: #e5e7eb;
    --text: #111827;
    --muted: #6b7280;
    --primary: #2563eb;
    --danger: #dc2626;
    --ok: #16a34a;
    --shadow: 0 8px 20px rgba(17, 24, 39, 0.08);
    --radius: 12px;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

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

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

.layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 18px 14px;
    border-right: 1px solid var(--border);
    background: var(--panel);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 12px;
    border-radius: 12px;
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--primary);
}

.brand-title {
    display: grid;
    gap: 2px;
    line-height: 1.1;
}

.brand-title strong {
    font-size: 14px;
    letter-spacing: 0.2px;
}

.brand-title span {
    font-size: 12px;
    color: var(--muted);
}

.nav {
    margin-top: 14px;
    display: grid;
    gap: 6px;
}

.nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--muted);
    border: 1px solid transparent;
}

.nav a:hover {
    color: var(--text);
    background: var(--panel-2);
    border-color: var(--border);
}

.nav a.active {
    color: var(--text);
    background: rgba(37, 99, 235, 0.10);
    border-color: rgba(37, 99, 235, 0.25);
}

.nav small {
    font-size: 11px;
    color: var(--muted);
}

.content {
    padding: 22px 22px 40px;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius);
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.burger {
    display: none;
    appearance: none;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    border-radius: 12px;
    padding: 10px 12px;
    cursor: pointer;
}

.topbar h1 {
    margin: 0;
    font-size: 16px;
    letter-spacing: 0.2px;
}

.muted {
    color: var(--muted);
}

.page {
    margin-top: 18px;
    display: grid;
    gap: 14px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.panel-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.panel-header h2 {
    margin: 0;
    font-size: 14px;
}

.panel-body {
    padding: 16px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.card {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 14px;
}

.card strong {
    display: block;
    font-size: 22px;
    margin-top: 6px;
}

.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.table th,
.table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
    font-size: 13px;
}

.table th {
    text-align: left;
    color: rgba(17, 24, 39, 0.75);
    background: var(--panel-2);
}

.table tr:last-child td {
    border-bottom: none;
}

.row {
    display: grid;
    gap: 10px;
}

.field {
    display: grid;
    gap: 6px;
}

.label {
    font-size: 12px;
    color: var(--muted);
}

input[type='text'],
input[type='number'],
input[type='date'],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid #d1d5db;
    background: #ffffff;
    color: var(--text);
    outline: none;
}

textarea {
    min-height: 92px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(37, 99, 235, 0.55);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

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

.btn {
    appearance: none;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 13px;
}

.btn:hover {
    background: var(--panel-2);
}

.btn-primary {
    border-color: rgba(37, 99, 235, 0.30);
    background: rgba(37, 99, 235, 0.10);
}

.btn-primary:hover {
    background: rgba(37, 99, 235, 0.14);
}

.btn-danger {
    border-color: rgba(220, 38, 38, 0.30);
    background: rgba(220, 38, 38, 0.08);
}

.btn-danger:hover {
    background: rgba(220, 38, 38, 0.12);
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #f3f4f6;
    font-size: 12px;
    color: var(--muted);
}

.alert {
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
}

.alert-danger {
    border-color: rgba(220, 38, 38, 0.30);
    background: rgba(220, 38, 38, 0.06);
}

.alert-ok {
    border-color: rgba(22, 163, 74, 0.30);
    background: rgba(22, 163, 74, 0.06);
}

.stack {
    display: grid;
    gap: 12px;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 12px 0;
}

.inline {
    display: flex;
    gap: 10px;
    align-items: end;
    flex-wrap: wrap;
}

.w-160 {
    width: 160px;
}

.w-220 {
    width: 220px;
}

.w-280 {
    width: 280px;
}

.right {
    margin-left: auto;
}

.hidden {
    display: none;
}

@media (max-width: 980px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-104%);
        transition: transform 200ms ease;
        width: 300px;
        z-index: 50;
        box-shadow: var(--shadow);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .burger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .content {
        padding: 16px;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }
}