.studio-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  margin: 0 0 2rem;
  line-height: 1.65;
}
.studio-intro > p {
  margin: 0;
  max-width: 65ch;
}
.studio-intro details {
  border-top: 1px solid var(--line);
  padding-top: 0.8rem;
}
.studio-intro input[type='file'] {
  max-width: 100%;
  margin: 1rem 0;
}
.studio-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 3rem);
  align-items: start;
}
.studio-layout > *,
.studio-layout .grid > * {
  min-width: 0;
}
.studio-layout h2 {
  font-size: clamp(1.2rem, 1.5vw, 1.55rem);
  line-height: 1.3;
}
.studio-eyebrow {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.studio-fact {
  border: 1px solid var(--line);
  padding: 1rem;
  margin: 1.5rem 0;
  border-radius: 0.45rem;
}
.studio-fact legend {
  padding: 0 0.4rem;
  font-weight: 700;
}
.studio-channel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.2rem 1rem;
}
.studio-compose {
  width: 100%;
  margin-top: 1.4rem;
}
.studio-section > summary {
  cursor: pointer;
}
.studio-section > summary h2 {
  display: inline;
}
.studio-section > summary .studio-eyebrow {
  display: block;
  margin-top: 0;
}
.studio-section[open] > summary {
  margin-bottom: 1.5rem;
}
.studio-form-footer {
  padding: 0 0.5rem;
}
.studio-form-footer .studio-compose {
  margin-top: 0;
}
.studio-preview {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 0.75rem;
  padding: clamp(1rem, 2.1vw, 2rem);
}
.studio-preview-heading h2 {
  font-size: clamp(1.5rem, 2vw, 2rem);
  margin: 0.5rem 0 1.3rem;
}
.studio-empty {
  background: var(--tint);
  padding-block: 2.5rem;
}
.studio-empty h2 {
  font-size: clamp(1.7rem, 2.8vw, 2.9rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}
.studio-empty p {
  max-width: 42ch;
  line-height: 1.7;
}
.studio-empty ol {
  margin: 2.5rem 0 0;
  padding-left: 1.4rem;
  line-height: 2.1;
}
.studio-output-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.studio-output-switch button {
  font-size: 0.85rem;
  padding: 0.55rem 0.7rem;
}
.studio-output-switch [aria-pressed='true'] {
  background: var(--text);
  color: var(--surface);
  border-color: var(--text);
}
.studio-copy {
  border: 1px solid var(--line);
  border-top: 4px solid var(--blue);
  background: var(--canvas);
  padding: clamp(1rem, 2.2vw, 2rem);
  border-radius: 0.2rem;
}
.studio-output-label {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}
.studio-copy h3 {
  font-size: 1.4rem;
  line-height: 1.3;
  overflow-wrap: anywhere;
}
.studio-copy-body {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.7;
}
.studio-copy-poster {
  border-top: 6px solid #d02020;
  padding-block: 2.5rem;
}
.studio-copy-poster h3 {
  font-size: clamp(1.7rem, 2.5vw, 2.7rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}
.studio-copy-sms {
  max-width: 28rem;
  margin: 0 auto;
  border-radius: 1.2rem 1.2rem 1.2rem 0.2rem;
  background: var(--tint);
}
.studio-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  margin: 1rem 0;
  color: var(--muted);
  font-size: 0.85rem;
}
.studio-checks {
  padding-left: 1.3rem;
  line-height: 1.6;
}
.studio-explanation {
  border-block: 1px solid var(--line);
  padding: 1rem 0;
  margin: 1.5rem 0;
}
.studio-explanation p {
  line-height: 1.6;
}
.studio-explanation blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--blue);
  overflow-wrap: anywhere;
}
.studio-explanation footer {
  font-size: 0.8rem;
  margin-top: 0.6rem;
}
#studio-save-form {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
#studio-save-form > button {
  width: 100%;
  margin-top: 1rem;
}
@media (max-width: 1100px) {
  .studio-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .studio-intro {
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
  }
}
@media (max-width: 450px) {
  .studio-channel-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .studio-layout .grid {
    grid-template-columns: minmax(0, 1fr);
  }
}
@media (prefers-reduced-motion: no-preference) {
  .studio-copy {
    animation: studio-appear 180ms ease-out;
  }
  @keyframes studio-appear {
    from {
      opacity: 0;
      transform: translateY(3px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

.studio-matrix {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.studio-matrix p {
  max-width: 65ch;
}