:root {
  --bg: #050716;
  --bg-gradient: radial-gradient(circle at top, #2b144f 0, #050716 45%, #000 100%);
  --card-bg: rgba(10, 13, 32, 0.95);
  --accent: #ffb347;
  --accent2: #ffe76b;
  --accent-soft: rgba(255, 179, 71, 0.16);
  --border: #262b45;
  --bucket-border: #343b5f;
  --bucket-border-active: #ffb347;
  --text: #f7f7ff;
  --muted: #a6b0d6;
  --correct: #32d47b;
  --wrong: #ff4d6a;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.65);
  --radius-lg: 18px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-gradient);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 20px 12px 28px;
}

.app {
  width: 100%;
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 70px;
  height: 70px;
  object-fit: contain;
  filter: drop-shadow(0 0 16px rgba(0, 0, 0, 0.9));
}

.title-block h1 {
  margin: 0 0 4px;
  font-size: 2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.title-block h1 span {
  color: var(--accent2);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.control-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.field {
  display: flex;
  align-items: center;
  gap: 6px;
}

.field label {
  font-size: 0.9rem;
  color: var(--muted);
}

.field select {
  background: #050814;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  font-size: 0.9rem;
}

.field select:focus {
  outline: 1px solid var(--accent);
  box-shadow: 0 0 0 1px rgba(255, 179, 71, 0.6);
}

.hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.btn {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 7px 16px;
  background: #151a33;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
  transition:
    background 0.16s ease,
    transform 0.12s ease,
    box-shadow 0.18s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #050814;
  font-weight: 600;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.7);
}

.btn.secondary {
  border-color: var(--border);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.7);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 7px 16px rgba(0, 0, 0, 0.5);
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.3fr);
  gap: 16px;
  align-items: stretch;
}

@media (max-width: 860px) {
  .game-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

.pool-column h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}

.card-pool {
  min-height: 160px;
  padding: 10px;
  border-radius: 14px;
  border: 1px dashed var(--bucket-border);
  background: rgba(4, 6, 20, 0.9);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.buckets-column {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.buckets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}

.bucket {
  border-radius: 14px;
  border: 1px solid var(--bucket-border);
  background: rgba(6, 9, 26, 0.95);
  padding: 8px 8px 10px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bucket-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px;
}

.bucket-title {
  font-size: 0.9rem;
  font-weight: 600;
}

.bucket-subtitle {
  font-size: 0.75rem;
  color: var(--muted);
}

.bucket.drop-target {
  border-color: var(--bucket-border-active);
  box-shadow: 0 0 18px rgba(255, 179, 71, 0.6);
}

.bucket-content {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 4px;
}

.token {
  border-radius: 999px;
  padding: 6px 9px;
  background: rgba(19, 23, 52, 0.98);
  border: 1px solid #343b5f;
  font-size: 0.85rem;
  cursor: grab;
  user-select: none;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.5);
  transition:
    transform 0.1s ease,
    box-shadow 0.16s ease,
    border-color 0.16s ease,
    background 0.16s ease;
}

.token:active {
  cursor: grabbing;
  transform: scale(1.02);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.75);
}

.token.correct {
  border-color: var(--correct);
  background: rgba(31, 79, 56, 0.96);
  box-shadow: 0 0 14px rgba(50, 212, 123, 0.7);
}

.token.wrong {
  border-color: var(--wrong);
  background: rgba(78, 19, 36, 0.96);
  box-shadow: 0 0 14px rgba(255, 77, 106, 0.7);
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  justify-content: space-between;
}

.score {
  font-size: 0.95rem;
}

.score span {
  font-weight: 700;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feedback {
  width: 100%;
  font-size: 0.85rem;
  color: var(--muted);
}

.feedback.good {
  color: var(--correct);
}

.feedback.bad {
  color: var(--wrong);
}