:root {
  color-scheme: light;
  --ink: #1c1b1a;
  --muted: #68635d;
  --paper: #f7f4ef;
  --panel: #fffefa;
  --line: #d9d2c7;
  --accent: #315c54;
  --accent-dark: #23453f;
  --focus: #b34b20;
  --success: #1d6646;
  --error: #a32626;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  font-weight: 450;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  background: radial-gradient(circle at top right, rgba(49, 92, 84, 0.08), transparent 30rem), var(--paper);
}
button, input { font: inherit; }
button, label { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.shell {
  width: min(calc(100% - 3rem), 110rem);
  height: 100svh;
  min-height: 100svh;
  margin: 0 auto;
  padding: 1.25rem 0 0.6rem;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
}
.intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}
.eyebrow { margin: 0 0 0.6rem; color: var(--accent); font-size: 0.76rem; font-weight: 750; letter-spacing: 0.16em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: none; margin-bottom: 0.35rem; font-size: clamp(2rem, 4.2vw, 3.75rem); line-height: 0.96; letter-spacing: -0.05em; }
h2 { margin-bottom: 0.4rem; font-size: 1.05rem; letter-spacing: -0.02em; }
h3 { margin-bottom: 0.35rem; color: var(--accent-dark); font-size: 0.94rem; }
.lead { max-width: 42rem; margin-bottom: 0; color: var(--muted); font-size: 0.98rem; }
.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(20rem, 0.75fr) minmax(0, 1.8fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "instructions config"
    "files config"
    "output config";
  gap: 0.75rem;
}
.workspace:not(:has(.config-panel[open])) {
  grid-template-columns: minmax(20rem, 1fr) minmax(18rem, 0.42fr);
}
.panel {
  min-height: 0;
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  box-shadow: 0 1rem 3rem rgba(31, 26, 20, 0.05);
}
.instructions-panel { grid-area: instructions; }
.files-panel { grid-area: files; display: flex; flex-direction: column; overflow: hidden; }
.config-panel { grid-area: config; align-self: start; padding: 0; overflow: hidden; }
.config-panel[open] { align-self: stretch; display: flex; flex-direction: column; }
.config-summary { display: flex; min-height: 4.2rem; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; cursor: pointer; list-style: none; }
.config-summary::-webkit-details-marker { display: none; }
.config-summary::marker { content: ""; }
.config-summary:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }
.config-summary-copy { display: flex; min-width: 0; align-items: baseline; flex-wrap: wrap; gap: 0.2rem 0.75rem; }
.config-summary h2 { margin: 0; }
.config-summary .muted { margin: 0; }
.config-chevron { flex: 0 0 auto; color: var(--accent); font-size: 1.4rem; font-weight: 800; line-height: 1; transform: translateY(-0.1rem); transition: transform 160ms ease; }
.config-panel[open] .config-chevron { transform: rotate(180deg) translateY(0.1rem); }
.config-body { display: flex; min-height: 0; flex: 1; flex-direction: column; padding: 0 1rem 1rem; }
.steps { display: grid; gap: 0.25rem; margin: 0.6rem 0 0.7rem; padding-left: 1.25rem; font-size: 0.8rem; }
code { padding: 0.1em 0.3em; border-radius: 0.3em; background: #ece7de; font-size: 0.92em; }
.privacy { margin-bottom: 0; color: var(--accent-dark); font-size: 0.76rem; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 0.65rem; }
.section-heading h2, .section-heading p { margin-bottom: 0; }
.muted { color: var(--muted); font-size: 0.78rem; }
.button { display: inline-flex; min-height: 2.75rem; align-items: center; justify-content: center; padding: 0.65rem 1rem; border: 1px solid transparent; border-radius: 999px; cursor: pointer; font-size: 0.94rem; font-weight: 700; line-height: 1; text-decoration: none; transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button-primary { width: 100%; margin-top: 0.7rem; color: #fff; background: var(--accent); }
.button-primary:hover:not(:disabled) { background: var(--accent-dark); }
.button-secondary { flex: 0 0 auto; color: var(--accent-dark); border-color: var(--accent); background: transparent; }
.button-secondary:hover { background: #e4eee9; }
.button:disabled { cursor: not-allowed; opacity: 0.45; }
.drop-zone { display: grid; min-height: 4.5rem; flex: 1 1 auto; place-content: center; gap: 0.25rem; border: 1.5px dashed #9caea6; border-radius: 0.9rem; color: var(--accent-dark); text-align: center; cursor: pointer; }
.drop-zone:hover, .drop-zone.is-dragging { border-color: var(--accent); background: #edf4f0; }
.drop-icon { display: block; font-size: 1.6rem; line-height: 1; }
.file-list { display: grid; gap: 0.35rem; margin: 0.55rem 0 0; padding: 0; list-style: none; }
.file-item, .empty-state { padding: 0.55rem 0.7rem; border-radius: 0.6rem; background: #f1ede6; font-size: 0.78rem; }
.file-item { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.file-name { overflow: hidden; font-weight: 650; text-overflow: ellipsis; white-space: nowrap; }
.file-kind { flex: 0 0 auto; color: var(--accent-dark); font-size: 0.72rem; font-weight: 750; text-transform: uppercase; }
.config-heading { align-items: center; justify-content: flex-end; margin-bottom: 0.45rem; }
.config-heading > .status { flex: 1 1 auto; min-height: 0; margin: 0; color: var(--muted); font-size: 0.68rem; text-align: right; }
.config-heading .button { min-height: 2.5rem; padding: 0.45rem 0.7rem; font-size: 0.72rem; }
.config-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.65rem; min-height: 0; flex: 1; }
.language-config { display: grid; grid-template-rows: auto auto auto minmax(0, 1fr) auto; min-width: 0; min-inline-size: 0; min-height: 0; margin: 0; padding: 0.65rem; overflow: hidden; border: 1px solid var(--line); border-radius: 0.8rem; background: #f8f5ef; }
.language-title { padding: 0 0.25rem; color: var(--accent-dark); font-size: 0.9rem; font-weight: 800; }
.deliverable-card { padding: 0.55rem; border-radius: 0.6rem; background: var(--panel); }
.complete-output { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 0.25rem 0.5rem; margin-top: 0.25rem; }
.complete-output h3, .derived-heading { margin-bottom: 0.4rem; }
.complete-output h3 { margin: 0; font-size: 0.78rem; }
.complete-output .config-field { grid-column: 2; }
.derived-heading { margin-top: 0.75rem; font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; }
.derived-list { display: grid; min-height: 0; flex: 1; gap: 0.35rem; overflow-y: auto; overscroll-behavior: contain; }
.derived-output { display: grid; grid-template-columns: 3.4rem minmax(0, 1fr) minmax(5.5rem, 0.7fr) auto; align-items: start; gap: 0.3rem; padding: 0.25rem 0.35rem; border: 1px solid var(--line); }
.deliverable-heading { display: contents; }
.deliverable-heading h4 { grid-column: 1; grid-row: 1; align-self: center; margin: 0; color: var(--accent-dark); font-size: 0.7rem; }
.deliverable-fields { display: contents; }
.derived-output .deliverable-heading .button-danger { grid-column: 4; grid-row: 1; }
.derived-output .deliverable-fields .config-field:first-child { grid-column: 2; grid-row: 1; }
.derived-output .deliverable-fields .config-field:nth-child(2) { grid-column: 3; grid-row: 1; }
.derived-output .field-label { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.config-field { display: grid; gap: 0.18rem; min-width: 0; }
.field-label { color: var(--ink); font-size: 0.68rem; font-weight: 700; }
.field-control { width: 100%; min-height: 2.75rem; padding: 0.4rem 0.5rem; border: 1px solid #bcb3a7; border-radius: 0.45rem; color: var(--ink); background: #fff; font-size: 0.75rem; }
.field-control[aria-invalid="true"] { border-color: var(--error); }
.field-error { min-height: 0; margin: 0; color: var(--error); font-size: 0.68rem; line-height: 1.25; }
.field-error:empty { display: none; }
.button-danger { min-height: 2.75rem; padding: 0.45rem 0.55rem; color: var(--error); border-color: #d8a9a9; background: #fff8f7; font-size: 0.68rem; }
.button-danger:hover:not(:disabled) { border-color: var(--error); background: #fbe9e6; }
.add-file-button { width: auto; min-width: 9rem; height: 2.75rem; max-height: 2.75rem; align-self: start; justify-self: start; margin-top: 0.45rem; font-size: 0.74rem; }
.output-panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: 0.75rem; row-gap: 0.2rem; padding: 0.65rem 1rem; }
.output-panel h2 { margin: 0; }
.output-grid { display: grid; grid-column: 1; grid-row: 1; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.4rem; margin: 0; }
.output-grid > div { min-width: 0; padding: 0.45rem 0.6rem; border-radius: 0.55rem; background: #f1ede6; }
.output-grid h3 { margin: 0; font-size: 0.76rem; }
.summary-detail { margin: 0.15rem 0 0; color: var(--muted); font-size: 0.68rem; }
.output-panel .button-primary { grid-column: 2; grid-row: 1; width: auto; min-width: 9rem; margin: 0; }
.status { min-height: 1.2em; margin: 0.45rem 0 0; color: var(--muted); font-size: 0.76rem; }
.output-panel .status { grid-column: 1 / -1; grid-row: 2; margin-top: 0.1rem; }
.status.is-success { color: var(--success); }
.status.is-error { color: var(--error); }
.footer { padding: 0; color: var(--muted); font-size: 0.72rem; text-align: center; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 59.99rem) {
  body { overflow: auto; }
  .shell { width: min(100% - 2rem, 52rem); height: auto; min-height: 100svh; padding: 2rem 0 1rem; display: block; }
  .intro { display: block; margin-bottom: 1.5rem; }
  .workspace { display: grid; grid-template-columns: 1fr; grid-template-rows: none; grid-template-areas: "instructions" "files" "config" "output"; gap: 1rem; }
  .panel { padding: clamp(1.2rem, 4vw, 2rem); }
  .drop-zone { min-height: 8rem; flex: initial; }
  .output-panel { display: block; }
  .output-panel .button-primary { width: 100%; margin-top: 0.7rem; }
  .output-panel .status { margin-top: 0.45rem; }
  .config-grid { flex: initial; }
  .language-config { overflow: visible; }
  .derived-list { overflow: visible; }
  .config-summary { min-height: 4.5rem; }
  .config-body { padding: 0 clamp(1.2rem, 4vw, 2rem) clamp(1.2rem, 4vw, 2rem); }
}

@media (max-width: 48rem) {
  .complete-output { display: block; }
  .complete-output h3 { margin-bottom: 0.4rem; }
  .derived-output { grid-template-columns: minmax(0, 1fr) auto; }
  .derived-output .deliverable-heading h4 { grid-column: 1; grid-row: 1; }
  .derived-output .deliverable-heading .button-danger { grid-column: 2; grid-row: 1; }
  .derived-output .deliverable-fields .config-field:first-child { grid-column: 1 / -1; grid-row: 2; }
  .derived-output .deliverable-fields .config-field:nth-child(2) { grid-column: 1 / -1; grid-row: 3; }
}

@media (max-width: 36rem) {
  .shell { padding-top: 2rem; }
  .section-heading { align-items: stretch; flex-direction: column; }
  .button-secondary { width: 100%; }
  .add-file-button { width: auto; }
  .config-grid { grid-template-columns: 1fr; }
  .output-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}