* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #111;
  color: #f5f5f5;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 20px;
}

.hero {
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 36px;
  margin: 0 0 8px;
}

.hero p {
  margin: 0;
  color: #aaa;
}

.card-grid {
  display: grid;
  gap: 14px;
}

.card {
  display: block;
  background: #1d1d1d;
  border: 1px solid #333;
  border-radius: 18px;
  padding: 18px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.card p {
  margin: 0;
  color: #aaa;
  line-height: 1.4;
}

.card.muted {
  opacity: 0.55;
}

.button {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 16px;
  margin: 10px 0 18px;
  background: #f5f5f5;
  color: #111;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
}

.secondary-button {
  display: block;
  width: 100%;
  border: 1px solid #444;
  border-radius: 14px;
  padding: 14px;
  margin: 10px 0;
  background: #1d1d1d;
  color: #f5f5f5;
  font-size: 16px;
  text-align: center;
}

.small {
  color: #aaa;
  font-size: 14px;
}

.exercise-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.exercise-row {
  padding: 12px;
  border-radius: 12px;
  background: #151515;
  border: 1px solid #2b2b2b;
}

.exercise-row strong {
  display: block;
  margin-bottom: 4px;
}

.exercise-row span {
  display: block;
  color: #aaa;
  font-size: 14px;
  line-height: 1.35;
}

.field-label {
  display: block;
  margin: 14px 0 6px;
  color: #ddd;
  font-weight: 700;
}

.field-input {
  width: 100%;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid #444;
  background: #111;
  color: #f5f5f5;
  font-size: 20px;
}

.field-input:focus {
  outline: 2px solid #f5f5f5;
  outline-offset: 2px;
}