:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #171a21;
  --text: #edf2ff;
  --muted: #a9b2c7;
  --accent: #7c9bff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", system-ui, sans-serif;
  background: radial-gradient(circle at top, #182134 0%, var(--bg) 45%);
  color: var(--text);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.desc {
  margin: 0 0 18px;
  color: var(--muted);
}

.panel {
  background: color-mix(in oklab, var(--panel) 90%, #000);
  border: 1px solid #28324a;
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 14px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #d3dcf7;
}

textarea,
input[type="range"] {
  width: 100%;
}

textarea {
  border: 1px solid #314061;
  background: #0f1420;
  color: #f5f7ff;
  border-radius: 10px;
  padding: 10px;
  resize: vertical;
}

.row {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.row label {
  margin-bottom: 0;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

button {
  border: 1px solid #30405f;
  background: #1a2234;
  color: #eef2ff;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: #8da8ff;
  color: #0f1630;
  font-weight: 700;
}

.status {
  margin: 10px 0 0;
  color: #a4ffcf;
  min-height: 1.2em;
}

.preview-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  border-bottom: 1px solid #27324d;
  text-align: left;
  padding: 8px 6px;
  white-space: nowrap;
}

td:last-child {
  font-weight: 700;
}