.ears-playground {
  display: grid;
  gap: 1.25rem;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
}

.ears-playground .ears-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  align-items: stretch;
}

.ears-playground .ears-card {
  border: 1px solid rgba(120, 113, 108, 0.24);
  border-radius: 0.85rem;
  padding: 1.15rem;
  background: rgba(255, 255, 255, 0.34);
  min-width: 0;
  box-shadow: 0 1px 0 rgba(28, 25, 23, 0.03);
}

.ears-playground .ears-card > p {
  line-height: 1.65;
}

.ears-playground .ears-input-card,
.ears-playground .ears-result-card {
  height: 100%;
}

.ears-playground label {
  display: block;
  margin-bottom: 0.45rem;
}

.ears-playground textarea {
  width: 100%;
  min-height: 8rem;
  resize: vertical;
  font: inherit;
  line-height: 1.5;
  padding: 0.8rem 0.85rem;
  border: 1px solid rgba(120, 113, 108, 0.42);
  border-radius: 0.6rem;
  background: rgba(255, 255, 255, 0.72);
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.ears-playground textarea:focus {
  outline: none;
  border-color: rgba(146, 64, 14, 0.65);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.11);
}

.ears-playground button,
.ears-playground .ears-actions a {
  min-height: 44px;
  padding: 0.65rem 0.9rem;
  border-radius: 0.55rem;
  font-weight: 600;
}

.ears-playground button {
  cursor: pointer;
}

.ears-playground .ears-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.85rem;
  align-items: center;
}

.ears-playground .ears-actions a {
  display: inline-flex;
  align-items: center;
}

.ears-playground .ears-example-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ears-playground .ears-validate-button {
  grid-column: 1 / -1;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}

.ears-playground .ears-secondary-button {
  width: 100%;
  border: 1px solid rgba(120, 113, 108, 0.36);
  background: rgba(255, 255, 255, 0.62);
  color: #292524;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.ears-playground .ears-secondary-button:hover {
  background: rgba(245, 245, 244, 0.95);
  border-color: rgba(87, 83, 78, 0.52);
}

.ears-playground .ears-valid-button::before {
  content: "✓";
  margin-right: 0.4rem;
  color: #166534;
}

.ears-playground .ears-invalid-button::before {
  content: "×";
  margin-right: 0.4rem;
  color: #b42318;
}

.ears-playground .ears-result-card {
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.ears-playground .ears-result-card[data-state="valid"] {
  border-color: rgba(22, 101, 52, 0.32);
  background: linear-gradient(180deg, rgba(240, 253, 244, 0.72), rgba(255, 255, 255, 0.3) 45%);
  box-shadow: inset 3px 0 0 rgba(22, 101, 52, 0.55);
}

.ears-playground .ears-result-card[data-state="invalid"] {
  border-color: rgba(180, 35, 24, 0.42);
  background: linear-gradient(180deg, rgba(254, 242, 242, 0.86), rgba(255, 255, 255, 0.3) 48%);
  box-shadow: inset 3px 0 0 rgba(180, 35, 24, 0.72);
}

.ears-playground .ears-status {
  display: inline-flex;
  align-items: center;
  margin: 0 0 0.55rem;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 750;
}

.ears-playground .ears-status[data-state="valid"] {
  color: #166534;
  background: rgba(220, 252, 231, 0.9);
  border: 1px solid rgba(22, 101, 52, 0.2);
}

.ears-playground .ears-status[data-state="invalid"] {
  color: #991b1b;
  background: rgba(254, 226, 226, 0.96);
  border: 1px solid rgba(185, 28, 28, 0.22);
}

.ears-playground .ears-pattern-line {
  margin-top: 0.15rem;
}

.ears-playground .ears-findings {
  display: grid;
  gap: 0.55rem;
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
}

.ears-playground .ears-finding {
  padding: 0.65rem 0.75rem;
  border-radius: 0.55rem;
  border: 1px solid transparent;
  line-height: 1.45;
}

.ears-playground .ears-finding-ok {
  color: #14532d;
  background: rgba(240, 253, 244, 0.76);
  border-color: rgba(22, 101, 52, 0.16);
}

.ears-playground .ears-finding-error {
  color: #7f1d1d;
  background: rgba(254, 226, 226, 0.84);
  border-color: rgba(185, 28, 28, 0.22);
}

.ears-playground .ears-finding-warning {
  color: #92400e;
  background: rgba(255, 247, 237, 0.94);
  border-color: rgba(194, 65, 12, 0.2);
}

.ears-playground .ears-structure-hint {
  margin: 0;
  padding: 0.65rem 0.75rem;
  border-radius: 0.55rem;
  color: #7f1d1d;
  background: rgba(254, 226, 226, 0.7);
}

.ears-playground .ears-clauses {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.ears-playground .ears-clause {
  display: grid;
  grid-template-columns: minmax(7rem, 0.32fr) 1fr;
  gap: 0.75rem;
  align-items: start;
}

.ears-playground code,
.ears-playground pre {
  overflow-wrap: anywhere;
}

.ears-playground .ears-patterns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.ears-playground .ears-patterns code {
  display: block;
  padding: 0.65rem 0.75rem;
  border: 1px solid rgba(120, 113, 108, 0.18);
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.42);
  font-size: 0.88rem;
  line-height: 1.5;
  white-space: normal;
}

.ears-playground .ears-rule-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ears-playground .ears-rule-button {
  width: 100%;
  border: 1px solid rgba(120, 113, 108, 0.32);
  background: rgba(255, 255, 255, 0.5);
  color: #292524;
  font-weight: 600;
  text-align: center;
}

.ears-playground .ears-rule-button.is-active {
  background: #1c1917;
  border-color: #1c1917;
  color: #fff;
}

.ears-playground .ears-code-panel {
  margin-top: 0.9rem;
  border: 1px solid rgba(120, 113, 108, 0.26);
  border-radius: 0.65rem;
  overflow: hidden;
  background: #1c1917;
  color: #f5f5f4;
}

.ears-playground .ears-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.85rem;
}

.ears-playground .ears-code-header a {
  color: #e7e5e4;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.ears-playground .ears-code-panel pre {
  margin: 0;
  padding: 0.9rem;
  max-height: 26rem;
  overflow: auto;
  white-space: pre;
  overflow-wrap: normal;
  font-size: 0.78rem;
  line-height: 1.55;
  -webkit-overflow-scrolling: touch;
}

.ears-playground .ears-code-panel code {
  overflow-wrap: normal;
}

.ears-playground .ears-code-error {
  margin: 0;
  padding: 0.85rem;
}

@media (max-width: 760px) {
  .ears-playground .ears-grid,
  .ears-playground .ears-patterns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .ears-hero > div {
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
  }

  .ears-playground {
    gap: 1rem;
  }

  .ears-playground .ears-card {
    padding: 0.9rem;
    border-radius: 0.65rem;
  }

  .ears-playground .ears-clause {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .ears-playground .ears-rule-actions {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .ears-playground .ears-rule-button {
    text-align: left;
  }

  .ears-playground .ears-example-actions {
    grid-template-columns: 1fr;
  }

  .ears-playground .ears-validate-button {
    grid-column: auto;
  }

  .ears-playground .ears-reference-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .ears-playground .ears-reference-actions a {
    width: 100%;
    justify-content: center;
  }

  .ears-playground .ears-patterns code {
    font-size: 0.8rem;
  }

  .ears-playground .ears-code-panel pre {
    max-height: 22rem;
    font-size: 0.74rem;
  }
}