:root {
  color-scheme: dark;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0f1424;
  color: #e6ecff;
}

.app {
  width: min(1080px, 96vw);
  margin: 24px auto;
  display: grid;
  gap: 16px;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

header p {
  margin-top: 8px;
  color: #a9b3d9;
}

.panel {
  background: #171f37;
  border: 1px solid #2d3a62;
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3);
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

#nextScenario {
  border: none;
  border-radius: 9px;
  padding: 10px 14px;
  color: #dfe7ff;
  background: #3560ff;
  cursor: pointer;
}

.scoreboard {
  display: flex;
  gap: 16px;
  color: #b6c2ec;
}

#chartCanvas {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #2f3f6c;
  background: linear-gradient(180deg, #111933 0%, #0c1225 100%);
}

.info-panel h2 {
  margin-top: 0;
}

#indicatorList {
  margin: 0 0 16px;
  color: #b8c4ea;
  line-height: 1.7;
}

.actions {
  display: flex;
  gap: 12px;
}

.actions button {
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
}

.actions .long {
  background: #1fb86b;
  color: #041409;
}

.actions .short {
  background: #ea4f65;
  color: #26040a;
}

.feedback {
  margin-top: 16px;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid #3a4a77;
  background: #121c35;
}

.feedback.correct {
  border-color: #32ce80;
}

.feedback.wrong {
  border-color: #ff6c80;
}

.hidden {
  display: none;
}