:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #10243e;
  --accent: #2563eb;
  --border: #dce5f2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.25rem;
}

.header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.header p {
  margin-top: 0.5rem;
}

.controls {
  display: grid;
  gap: 0.9rem;
  margin: 1rem 0 1.5rem;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

select {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  color: var(--text);
}

.category-fieldset {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.75rem;
  background: var(--surface);
}

.category-fieldset legend {
  font-weight: 700;
  padding: 0 0.35rem;
}

.categories-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1rem;
  margin-top: 0.5rem;
}

.category-option {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.words {
  display: grid;
  place-items: center;
}

.word-card {
  width: min(100%, 560px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.2rem;
  box-shadow: 0 8px 16px rgb(16 36 62 / 7%);
}

.word-button {
  width: 100%;
  border: 0;
  border-radius: 0.8rem;
  padding: 1.35rem;
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: #dbeafe;
  color: #1e3a8a;
  cursor: pointer;
}

.word-button:hover,
.word-button:focus-visible {
  background: #bfdbfe;
}

.word-figure {
  margin: 1rem 0 0;
  text-align: center;
}

.word-image {
  width: 100%;
  max-height: 340px;
  object-fit: contain;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
}

.word-caption {
  margin-top: 0.7rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #334155;
}