:root {
  --bg: #eef3f7;
  --ink: #1b2a35;
  --muted: #607381;
  --line: #d6e1e9;
  --card: #ffffff;
  --accent: #006f98;
  --accent-2: #0c9b72;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 5%, #d8ebf3, transparent 30%),
    radial-gradient(circle at 90% 10%, #d7f2e8, transparent 35%),
    var(--bg);
}

.shell {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.topbar h1 {
  margin: 0;
  font-size: 30px;
}

.topbar p {
  margin: 6px 0 20px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
}

.full {
  width: 100%;
}

input, select {
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
  min-width: 180px;
}

button {
  height: 36px;
  border: none;
  border-radius: 9px;
  padding: 0 14px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  cursor: pointer;
}

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

thead th {
  text-align: left;
  background: #f4f8fb;
}

th, td {
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  font-size: 13px;
  vertical-align: top;
}

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

pre {
  background: #f8fbfd;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  overflow: auto;
}

@media (max-width: 740px) {
  .topbar h1 {
    font-size: 24px;
  }
  input {
    min-width: 100%;
  }
}