:root {
  --bg: #0f1720; --panel: #17222d; --panel-2: #223241; --text: #edf2f7; --muted: #96a7b7;
  --line: #2b3d4d; --accent: #7fa486; --gold: #b39b68; --danger: #c66b6b;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: #0b1218; color: var(--text); }
a { color: inherit; text-decoration: none; }
.shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar { background: var(--bg); border-right: 1px solid var(--line); padding: 24px 18px; display: flex; flex-direction: column; }
.brand { font-size: 1.6rem; font-weight: 800; }
.subbrand { margin-top: 6px; font-size: .92rem; }
.muted { color: var(--muted); }
.brand-block { padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.nav { display: grid; gap: 8px; }
.nav-link { padding: 12px 14px; border-radius: 12px; border: 1px solid transparent; }
.nav-link:hover, .nav-link.active { background: var(--panel); border-color: var(--line); }
.sidebar-footer { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); }
.content { padding: 28px; }
.page-header { display: flex; align-items: start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.page-header h1, .page-header h2 { margin: 0 0 6px 0; }
.header-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.card-grid { display: grid; gap: 18px; margin-bottom: 18px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 18px; }
.card.stat span { display: block; color: var(--muted); margin-bottom: 8px; }
.card.stat strong { font-size: 1.8rem; }
.narrow { max-width: 680px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 12px; padding: 11px 16px; background: var(--accent); color: #102014; font-weight: 700; border: 0; cursor: pointer; }
.button.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--line); }
.button.small { padding: 8px 12px; font-size: .92rem; }
.text-link { color: var(--gold); }
.form-grid { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid .full { grid-column: 1 / -1; }
label { display: grid; gap: 8px; font-weight: 700; }
input, select, textarea { width: 100%; border-radius: 12px; border: 1px solid var(--line); background: #101922; color: var(--text); padding: 12px 13px; }
textarea { min-height: 110px; resize: vertical; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; text-align: left; }
.table th { color: var(--muted); font-size: .84rem; text-transform: uppercase; letter-spacing: .04em; }
.badge { display: inline-block; border-radius: 999px; padding: 6px 10px; border: 1px solid var(--line); background: #101922; }
.flash-stack { display: grid; gap: 10px; margin-bottom: 16px; }
.flash { padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); }
.flash-success { background: rgba(123,179,141,.12); }
.flash-error { background: rgba(198,107,107,.12); }
.list-block { display: grid; gap: 12px; }
.list-row { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.auth-wrap { min-height: 90vh; display: grid; place-items: center; }
.auth-card { width: min(420px, 92vw); background: var(--panel); border: 1px solid var(--line); padding: 24px; border-radius: 18px; }
.split { display: grid; grid-template-columns: 2fr 1fr; gap: 18px; }
.key-value { display: grid; grid-template-columns: 190px 1fr; gap: 8px; margin-bottom: 8px; }
.helper { font-size: .85rem; color: var(--muted); }
.action-row { display: flex; gap: 10px; flex-wrap: wrap; }
.kpi-row { display: grid; gap: 12px; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 16px; }
code.inline { background: #101922; border: 1px solid var(--line); padding: 2px 6px; border-radius: 8px; }
@media (max-width: 1100px) {
  .shell, .card-grid.four, .card-grid.two, .split, .form-grid, .kpi-row { grid-template-columns: 1fr; }
}