:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --ink: #111827;
  --muted: #6b7280;
  --primary: #0f766e;
  --accent: #0ea5e9;
  --danger: #ef4444;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card);
  padding: 16px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.nav a {
  color: var(--ink);
  text-decoration: none;
  margin-right: 12px;
  font-weight: 600;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-top: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th, .table td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: #e2f4f1;
  color: var(--primary);
  font-weight: 600;
}

.button {
  background: var(--primary);
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.button.secondary { background: var(--accent); }
.button.danger { background: var(--danger); }

.input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  margin-top: 6px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.notice {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  padding: 12px;
  border-radius: 10px;
}

.footer { color: var(--muted); font-size: 12px; margin-top: 16px; }