:root {
  --bg: #f4f4f4;
  --panel: #ffffff;
  --text: #1f1f1f;
  --muted: #6a6a6a;
  --border: #d9d9d9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, #ffffff 0%, #e9e9e9 70%);
  font-family: "Trebuchet MS", "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
}

.page {
  width: min(960px, 96vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1rem 1.25rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

h1 {
  margin: 0;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  font-weight: 700;
}

.instructions {
  margin: 0.4rem 0 0.9rem;
  color: var(--muted);
}

.hud {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

#game {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f7f7f7;
}

.status {
  margin: 0.7rem 0 0;
  color: #444;
  font-weight: 600;
}

kbd {
  border: 1px solid #b4b4b4;
  border-radius: 5px;
  background: #f0f0f0;
  padding: 0.12rem 0.35rem;
  font-size: 0.88em;
}