:root {
  --bg: #f7f7fb;
  --card: #ffffff;
  --border: #e3e3ec;
  --text: #1c1c28;
  --muted: #6b6b7a;
  --brand: #4f46e5;
  --brand-dark: #3730a3;
  --danger: #dc2626;
  --ok: #16a34a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
}

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

header.topbar a.brand {
  font-weight: 700;
  color: var(--brand-dark);
  text-decoration: none;
  font-size: 18px;
}

header.topbar .user-info { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--muted); }

main { max-width: 880px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }

a { color: var(--brand); }

.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--brand-dark); }
.btn.secondary { background: transparent; color: var(--brand); border: 1px solid var(--brand); }
.btn.small { padding: 4px 10px; font-size: 12px; }

form.inline { display: flex; gap: 8px; align-items: center; }

input, textarea, select {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  width: 100%;
  font-family: inherit;
}

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }

.badge {
  display: inline-block;
  background: #eef2ff;
  color: var(--brand-dark);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
}

.error { color: var(--danger); font-size: 14px; margin-bottom: 12px; }
.ok { color: var(--ok); font-size: 14px; }
.muted { color: var(--muted); font-size: 13px; }

.list-item { padding: 12px 0; border-bottom: 1px solid var(--border); }
.list-item:last-child { border-bottom: none; }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tabs button {
  flex: 1; padding: 10px; border: 1px solid var(--border); background: var(--card);
  border-radius: 6px; cursor: pointer; font-size: 14px;
}
.tabs button.active { background: var(--brand); color: #fff; border-color: var(--brand); }

.login-box { max-width: 380px; margin: 60px auto; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }