.utility-page {
  gap: 1.25rem;
}

.utility-intro,
.converter-container {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.utility-intro-copy {
  padding: clamp(1.75rem, 4vw, 3rem);
}

.utility-intro-copy > span,
.converter-heading > div > span {
  color: var(--text-tertiary);
  font-family: var(--font-wide);
  font-size: 0.59rem;
  letter-spacing: 0.1em;
}

.utility-intro h1 {
  margin: 0.4rem 0 0.6rem;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1;
}

.utility-intro p {
  max-width: 640px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.87rem;
}

.converter-container {
  width: min(100%, 920px);
}

.converter-heading {
  display: flex;
  min-height: 66px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--line);
}

.converter-heading h2 {
  margin: 0.18rem 0 0;
  font-size: 1.15rem;
}

.converter-heading > span {
  color: var(--text-tertiary);
  font: 0.6rem ui-monospace, "Cascadia Code", monospace;
}

.converter-workspace {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(360px, 1.2fr);
  min-height: 330px;
  border-bottom: 1px solid var(--line);
}

.upload-area {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 0;
  border-right: 1px dashed var(--line-strong);
  background: var(--surface-soft);
  cursor: pointer;
  text-align: center;
}

.upload-area:hover {
  background: var(--surface-raised);
}

.converter-workspace:has(.preview-area[style*="display: none"]) .upload-area {
  grid-column: 1 / -1;
  border-right: 0;
}

.upload-icon {
  display: grid;
  width: 44px;
  height: 44px;
  margin-bottom: 0.8rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.upload-area strong {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
}

.upload-area p {
  margin: 0.25rem 0 0;
  color: var(--text-tertiary);
  font-size: 0.7rem;
}

.preview-area {
  min-width: 0;
  min-height: 330px;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background:
    linear-gradient(45deg, #151a21 25%, transparent 25%),
    linear-gradient(-45deg, #151a21 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #151a21 75%),
    linear-gradient(-45deg, transparent 75%, #151a21 75%),
    #10141a;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}

.preview-canvas {
  width: min(100%, 620px);
  height: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #080a0d;
}

.output-spec {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border-bottom: 1px solid var(--line);
}

.output-spec div {
  display: grid;
  gap: 0.2rem;
  padding: 0.75rem 1rem;
  border-right: 1px solid var(--line);
}

.output-spec div:last-child {
  border-right: 0;
}

.output-spec dt {
  color: var(--text-tertiary);
  font-family: var(--font-wide);
  font-size: 0.56rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.output-spec dd {
  margin: 0;
  color: var(--text-secondary);
  font: 0.68rem ui-monospace, "Cascadia Code", monospace;
}

.converter-actions {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  padding: 0.7rem 1rem;
}

.error-text {
  flex: 1;
  margin: 0;
  color: #e78f92;
  font-size: 0.68rem;
}

.convert-btn,
.download-btn {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-sm);
  background: var(--accent-primary);
  color: #111214;
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 600;
}

.convert-btn icon .icon-image,
.download-btn icon .icon-image {
  filter: brightness(0);
}

.convert-btn:hover,
.download-btn:hover {
  border-color: #eceef1;
  background: #eceef1;
}

.convert-btn:disabled {
  border-color: var(--line);
  background: var(--surface-raised);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

.convert-btn:disabled icon {
  opacity: 0.35;
}

.download-area {
  padding: 0 1rem 1rem;
  text-align: right;
}

@media (max-width: 760px) {
  .converter-workspace {
    grid-template-columns: 1fr;
  }

  .upload-area {
    min-height: 230px;
    border-right: 0;
    border-bottom: 1px dashed var(--line-strong);
  }

  .preview-area {
    min-height: 260px;
  }

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

  .output-spec div:nth-child(2) {
    border-right: 0;
  }

  .output-spec div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 500px) {
  .converter-heading {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

  .converter-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .convert-btn,
  .download-btn {
    width: 100%;
  }
}