:root {
  --bg: #f4f7f6;
  --panel: #ffffff;
  --text: #16302b;
  --muted: #5e7a73;
  --brand: #0b7c5d;
  --line: #dce7e3;
  --danger: #b64040;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: linear-gradient(180deg, #f9fbfa 0%, #edf4f1 100%);
  color: var(--text);
}

.view { display: none; min-height: 100vh; }
.view.active { display: block; }

.login-card {
  width: min(420px, 92vw);
  margin: 9vh auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 35px rgba(10, 39, 31, .08);
}

.login-card h1 { margin: 0 0 8px; color: var(--brand); }
.muted { color: var(--muted); margin: 0 0 18px; }
.login-card label { display: block; margin: 10px 0 6px; font-weight: 600; }
.login-card input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}

button:hover { filter: brightness(1.03); }
.danger { background: var(--danger); margin-top: auto; }

.status { min-height: 24px; margin-top: 10px; color: var(--danger); }

#mainView {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #0c3d31;
  color: #ebf5f2;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  padding: 8px 10px;
}

.nav-btn {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid rgba(255,255,255,.2);
  color: #eff9f5;
}

.nav-btn.active {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.35);
}

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

.topbar h2 { margin: 0; }
.top-actions { display: flex; align-items: center; gap: 8px; }
.badge {
  background: #ecf4f1;
  color: #2b5249;
  border: 1px solid #cde0d9;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
}

.tab { display: none; }
.tab.active { display: block; }

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 10px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

.kpi { font-size: 28px; font-weight: 800; color: var(--brand); }
.kpi-label { color: var(--muted); font-size: 13px; }

.table-wrap {
  margin-top: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

th, td {
  border-bottom: 1px solid #edf2ef;
  padding: 10px;
  text-align: left;
  font-size: 14px;
}

th { background: #f7fbf9; }
.toolbar { display: flex; gap: 8px; margin: 8px 0; }

@media (max-width: 960px) {
  #mainView { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; flex-wrap: wrap; }
  .danger { margin-top: 0; }
  .grid { grid-template-columns: repeat(2, minmax(150px, 1fr)); }
}