:root {
  color-scheme: light;
  --ink: #1e293b;
  --ink-soft: #64748b;
  --sky: #e8eef6;
  --sky-deep: #d5e0ee;
  --accent: #b45309;
  --accent-dark: #92400e;
  --success: #15803d;
  --danger: #b91c1c;
  --surface: #ffffff;
  --line: rgba(30, 41, 59, 0.14);
  --drop: #f8fafc;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Nunito", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(ellipse 65% 45% at 85% 10%, rgba(180, 83, 9, 0.12), transparent 55%),
    radial-gradient(ellipse 55% 40% at 5% 70%, rgba(30, 41, 59, 0.08), transparent 50%),
    linear-gradient(180deg, var(--sky) 0%, var(--sky-deep) 100%);
}

.shell {
  max-width: 56rem;
  margin: 0 auto;
  padding: 2.25rem 1.35rem 3.5rem;
}

.intro {
  margin-bottom: 1.75rem;
  animation: rise-in 0.7s ease-out both;
}

.eyebrow {
  margin: 0 0 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.lede {
  margin: 0.85rem 0 0;
  max-width: 38rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

.board {
  display: grid;
  grid-template-columns: minmax(10rem, 14rem) 1fr;
  gap: 1.25rem 1.5rem;
  align-items: start;
  animation: rise-in 0.75s ease-out 0.08s both;
}

.column h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
}

.word-bank,
.definition-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.word-chip {
  display: block;
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: grab;
  box-shadow: 0 10px 24px rgba(30, 41, 59, 0.06);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease;
  touch-action: none;
}

.word-chip:hover,
.word-chip:focus-visible {
  border-color: rgba(180, 83, 9, 0.45);
  transform: translateY(-1px);
  outline: none;
}

.word-chip:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
}

.word-chip:active {
  cursor: grabbing;
}

.word-chip.is-selected {
  border-color: var(--accent);
  background: rgba(180, 83, 9, 0.1);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.2);
}

.word-chip.is-dragging {
  opacity: 0.45;
}

.word-chip.is-placed {
  display: none;
}

.definition-card {
  display: grid;
  gap: 0.65rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(30, 41, 59, 0.06);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.definition-card.is-over {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.18);
}

.definition-card.is-correct {
  border-color: rgba(21, 128, 61, 0.55);
  box-shadow: 0 0 0 3px rgba(21, 128, 61, 0.12);
}

.definition-card.is-incorrect {
  border-color: rgba(185, 28, 28, 0.5);
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.1);
}

.definition-text {
  margin: 0;
  line-height: 1.45;
}

.drop-zone {
  min-height: 2.75rem;
  display: flex;
  align-items: center;
  padding: 0.35rem;
  border: 1.5px dashed rgba(30, 41, 59, 0.28);
  border-radius: 0.75rem;
  background: var(--drop);
}

.drop-zone.is-filled {
  border-style: solid;
  border-color: rgba(180, 83, 9, 0.35);
  background: rgba(180, 83, 9, 0.06);
}

.placed-word {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  padding: 0.45rem 0.55rem 0.45rem 0.75rem;
  border-radius: 0.6rem;
  background: var(--surface);
  font-weight: 700;
}

.clear-match {
  border: 0;
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  background: rgba(30, 41, 59, 0.08);
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

.clear-match:hover,
.clear-match:focus-visible {
  background: rgba(30, 41, 59, 0.14);
  outline: none;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1.4rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: transform 160ms ease, background 160ms ease;
}

button:hover,
button:focus-visible {
  background: var(--accent-dark);
  transform: translateY(-1px);
  outline: none;
}

button:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

button.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

button.secondary:hover,
button.secondary:focus-visible {
  background: rgba(30, 41, 59, 0.05);
}

.feedback {
  margin-top: 1.15rem;
  padding: 1rem 1.15rem;
  border-radius: 1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  line-height: 1.5;
  min-height: 3.25rem;
}

.feedback:empty {
  display: none;
}

.feedback .ok {
  color: var(--success);
  font-weight: 700;
}

.feedback .miss {
  color: var(--danger);
  font-weight: 700;
}

@media (max-width: 720px) {
  .board {
    grid-template-columns: 1fr;
  }

  .word-bank {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .shell {
    padding: 1.5rem 1rem 2.75rem;
  }

  .word-bank {
    grid-template-columns: 1fr;
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(0.85rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro,
  .board,
  .word-chip,
  button {
    animation: none !important;
    transition: none !important;
  }
}