:root {
  color-scheme: light;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  line-height: 1.5;
  font-weight: 400;
  background:
    radial-gradient(circle at top, rgba(199, 184, 141, 0.32), transparent 42%),
    linear-gradient(180deg, #f7f1df 0%, #efe6cf 100%);
  color: #2b2416;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
}

button,
select {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  padding: 1.5rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.topbar p {
  margin: 0.25rem 0 0;
  max-width: 52rem;
}

.debug-inline {
  font-size: 0.95rem;
  color: rgba(43, 36, 22, 0.8);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
  justify-content: flex-start;
}

.controls label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
}

.controls-panel {
  display: grid;
  gap: 0.75rem;
  min-width: min(100%, 46rem);
}

.controls-primary-row,
.controls-secondary-row {
  padding: 0.9rem 1rem;
  border: 1px solid rgba(62, 45, 18, 0.12);
  border-radius: 1rem;
  background: rgba(255, 251, 241, 0.74);
  box-shadow: 0 10px 24px rgba(79, 61, 31, 0.05);
}

.controls-primary-row > label,
.controls-primary-row > .page-controls,
.controls-primary-row > .button-row,
.controls-secondary-row > label {
  min-width: 0;
}

.controls-primary-row {
  align-items: center;
}

.controls-secondary-row {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(20rem, 1fr);
  align-items: start;
}

.prompt-editor {
  min-width: 0;
}

.prompt-editor textarea {
  width: 100%;
  min-height: 7rem;
  resize: vertical;
  font: inherit;
  padding: 0.65rem 0.75rem;
  border: 1px solid rgba(62, 45, 18, 0.2);
  border-radius: 0.8rem;
  background: rgba(255, 251, 241, 0.9);
  color: inherit;
}

.file-picker input[type="file"] {
  max-width: 17rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.page-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid rgba(62, 45, 18, 0.15);
  border-radius: 0.8rem;
  background: rgba(255, 251, 241, 0.7);
}

.page-controls span {
  min-width: 5.5rem;
  text-align: center;
}

.controls button,
.controls select {
  border: 1px solid rgba(62, 45, 18, 0.2);
  background: rgba(255, 251, 241, 0.85);
  color: inherit;
  padding: 0.7rem 0.9rem;
  border-radius: 0.8rem;
}

.viewer {
  display: grid;
  gap: 1rem;
}

.viewer.single {
  grid-template-columns: minmax(0, 1fr);
}

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

.pane {
  min-height: calc(100vh - 11rem);
  background: rgba(255, 252, 245, 0.82);
  border: 1px solid rgba(62, 45, 18, 0.15);
  border-radius: 1.2rem;
  box-shadow: 0 18px 45px rgba(79, 61, 31, 0.09);
  padding: 1rem;
  overflow: auto;
}

.pane-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-placeholder {
  display: grid;
  align-items: start;
  justify-items: stretch;
  min-height: calc(100% - 2rem);
  border-radius: 1rem;
  border: 1px dashed rgba(62, 45, 18, 0.25);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(246, 238, 218, 0.8)),
    repeating-linear-gradient(180deg, transparent, transparent 31px, rgba(84, 69, 43, 0.035) 31px, rgba(84, 69, 43, 0.035) 32px);
  padding: 1rem;
  text-align: center;
}

.translation-state {
  font-size: 1.1rem;
}

.original-preview img {
  width: 100%;
  height: auto;
  object-fit: contain;
  box-shadow: 0 12px 28px rgba(61, 47, 20, 0.18);
}

.pdf-stage {
  display: grid;
  gap: 0.75rem;
  width: 100%;
}

.pdf-stage canvas {
  width: 100%;
  height: auto;
  box-shadow: 0 12px 28px rgba(61, 47, 20, 0.18);
  background: white;
}

.translation-flow {
  width: 100%;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 28px rgba(61, 47, 20, 0.18);
  overflow: hidden;
  padding: 1.2rem 1rem;
  text-align: left;
}

.translation-flow-block {
  padding: 0.28rem 0.36rem;
  overflow: visible;
  text-align: left;
  line-height: 1.45;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 0.2rem;
}

.translation-flow-block + .translation-flow-block {
  margin-top: 0.35rem;
}

.translation-flow-block-h1,
.translation-flow-block-h2,
.translation-flow-block-h3 {
  font-weight: 700;
}

.translation-flow-block-h1 {
  font-size: 1.45rem;
}

.translation-flow-block-h2 {
  font-size: 1.25rem;
}

.translation-flow-block-h3 {
  font-size: 1.1rem;
}

.translation-flow-block-p,
.translation-flow-block-formula {
  font-size: 1.02rem;
}

.translation-flow-block-formula {
  font-family: "Nimbus Roman", "Times New Roman", serif;
  font-style: italic;
}

.translation-flow-block-formula,
.translation-flow-block-h1,
.translation-flow-block-h2,
.translation-flow-block-h3 {
  margin-left: auto;
  margin-right: auto;
}

.math-html {
  text-align: left;
}

.math-html .katex-display {
  margin: 0.15rem 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.math-html .katex {
  font-size: 1.1em;
}

.translation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.translation-meta span {
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  background: rgba(255, 251, 241, 0.9);
  border: 1px solid rgba(62, 45, 18, 0.15);
}

.copy-raw-button {
  border: 1px solid rgba(62, 45, 18, 0.2);
  background: rgba(255, 251, 241, 0.95);
  color: inherit;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.verdict {
  font-weight: 700;
}

.verdict-looks-english {
  background: rgba(201, 233, 199, 0.95);
}

.verdict-looks-french,
.verdict-looks-german {
  background: rgba(241, 210, 178, 0.95);
}

.verdict-unclear {
  background: rgba(228, 223, 196, 0.95);
}

.raw-preview {
  width: 100%;
  margin-top: 1rem;
  text-align: left;
}

.raw-preview summary {
  cursor: pointer;
}

.raw-preview pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.92);
  padding: 0.8rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(62, 45, 18, 0.12);
}

.prompt-preview {
  margin-bottom: 0.8rem;
}

.prompt-preview strong {
  display: block;
  margin-top: 0.4rem;
  margin-bottom: 0.25rem;
}

.debug-panel {
  margin-top: 0.85rem;
  padding: 1rem;
  background: rgba(250, 246, 236, 0.92);
  border: 1px solid rgba(62, 45, 18, 0.15);
  border-radius: 1rem;
}

.settings-panel {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(255, 252, 245, 0.86);
  border: 1px solid rgba(62, 45, 18, 0.15);
  border-radius: 1rem;
  box-shadow: 0 14px 32px rgba(79, 61, 31, 0.06);
}

.debug-disclosure {
  margin-top: 1rem;
  border-top: 1px solid rgba(62, 45, 18, 0.12);
  padding-top: 0.85rem;
}

.debug-disclosure summary {
  cursor: pointer;
  font-weight: 600;
  color: rgba(43, 36, 22, 0.88);
}

.debug-disclosure summary:hover {
  color: rgba(43, 36, 22, 1);
}

.settings-panel-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 0.9rem;
}

.settings-panel-header span {
  max-width: 42rem;
  font-size: 0.95rem;
  color: rgba(43, 36, 22, 0.76);
}

.debug-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 0.8rem;
  margin-top: 0.75rem;
  margin-bottom: 0.75rem;
  text-align: left;
}

.debug-log {
  display: grid;
  gap: 0.35rem;
  text-align: left;
  font-size: 0.9rem;
}

.image-block {
  width: 100%;
  height: 100%;
  border: 1px dashed rgba(62, 45, 18, 0.4);
  display: grid;
  place-items: center;
  background: rgba(209, 196, 170, 0.2);
}

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
  }

  .controls {
    justify-content: start;
  }

  .controls-panel {
    width: 100%;
    min-width: 0;
  }

  .controls-primary-row,
  .controls-secondary-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .settings-panel-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .button-row {
    width: 100%;
  }

  .button-row button {
    flex: 1 1 12rem;
  }

  .viewer.split {
    grid-template-columns: minmax(0, 1fr);
  }
}