:root {
  --bg: #f3f6f4;
  --panel: #ffffff;
  --ink: #14231c;
  --muted: #5e7368;
  --line: #d7e2db;
  --brand: #0b6e4f;
  --brand-2: #0f8a63;
  --danger: #b42318;
  --warn: #b54708;
  --ok: #067647;
  --shadow: 0 10px 30px rgba(20, 35, 28, 0.08);
  --radius: 18px;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(11, 110, 79, 0.12), transparent 28%),
    linear-gradient(180deg, #eef5f1 0%, var(--bg) 40%, #e8efeb 100%);
  color: var(--ink);
  min-height: 100vh;
}

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

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #0f2a20;
  color: #edf7f2;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 700;
  background: linear-gradient(135deg, var(--brand), #19a37a);
}

.brand span, .muted { color: #9fb7ab; font-size: 13px; display: block; }

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar nav a {
  padding: 12px 14px;
  border-radius: 12px;
  color: #d7ebe2;
}

.sidebar nav a.active,
.sidebar nav a:hover {
  background: rgba(255,255,255,0.08);
}

.sidebar-foot {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.content {
  padding: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.topbar h1 {
  margin: 0;
  font-size: 28px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

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

.card {
  padding: 20px;
}

.card .label { color: var(--muted); font-size: 14px; }
.card .value { font-size: 34px; font-weight: 700; margin-top: 8px; }

.panel { padding: 8px 0 0; overflow: hidden; }
.panel-head {
  padding: 18px 20px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

th, td {
  padding: 14px 20px;
  text-align: right;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

th {
  color: var(--muted);
  font-weight: 600;
  background: #f8fbf9;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.badge.ok { background: #e7f8ef; color: var(--ok); }
.badge.off { background: #f2f4f3; color: #66756d; }
.badge.warn { background: #fff4e5; color: var(--warn); }
.badge.info { background: #e8f1ff; color: #175cd3; }
.badge.danger { background: #fee4e2; color: var(--danger); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
  background: var(--brand);
  color: white;
}

.btn:hover { background: var(--brand-2); }
.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.18);
  color: inherit;
}
.content .btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: white;
}
.btn-danger { background: var(--danger); }
.btn-sm { padding: 7px 10px; font-size: 12px; }

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 16px;
}
.alert-success { background: #e7f8ef; color: var(--ok); }
.alert-error { background: #fee4e2; color: var(--danger); }

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
  background: white;
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.login-card h1 { margin: 0 0 8px; }
.login-card p { margin: 0 0 22px; color: var(--muted); }

.field { display: grid; gap: 8px; margin-bottom: 14px; }
.field input {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
}

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

.empty {
  padding: 28px 20px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 5; }
  .cards { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; }
  table { display: block; overflow-x: auto; }
}