:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #16191d;
  --ink-muted: #5c6470;
  --line: #dfe3e8;
  --accent: #1f5fd0;
  --accent-ink: #ffffff;
  --danger: #b3261e;
  --danger-bg: #fdf1f0;
  --warn: #8a5a00;
  --warn-bg: #fff8e6;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 1px 3px rgb(16 24 40 / 10%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171b;
    --panel: #1c2026;
    --ink: #e8eaed;
    --ink-muted: #9aa3ae;
    --line: #2d333b;
    --accent: #6f9bec;
    --accent-ink: #10141a;
    --danger: #f2857c;
    --danger-bg: #2a1a19;
    --warn: #e0b25a;
    --warn-bg: #2a2418;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

/*
  The browser's own [hidden] { display: none } lives in the user-agent stylesheet, and any
  author rule setting display beats it — so a panel styled `display: flex` stays visible even
  with the hidden attribute set. This puts the attribute back in charge for every element,
  rather than leaving each display rule to remember to work around it.
*/
[hidden] { display: none !important; }

body {
  margin: 0;
  padding: 0 1rem 4rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main, .masthead, .footer { max-width: 46rem; margin-inline: auto; }

.masthead { padding: 2.5rem 0 1.5rem; }
.masthead h1 { margin: 0; font-size: 1.5rem; letter-spacing: -0.01em; }
.subtitle { margin: 0.35rem 0 0; color: var(--ink-muted); font-size: 0.9rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.panel h2 { margin: 0 0 0.75rem; font-size: 1rem; font-weight: 600; }
details.panel summary { cursor: pointer; list-style-position: outside; }
details.panel summary h2 { display: inline; margin: 0; }

/* Upload ------------------------------------------------------------------ */

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 2rem 1rem;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.dropzone:hover,
.dropzone:focus-visible { border-color: var(--accent); outline: none; }
.dropzone.dragging { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.dropzone-icon { width: 2rem; height: 2rem; color: var(--ink-muted); }
.dropzone-text { margin: 0; }
.dropzone-hint { margin: 0; color: var(--ink-muted); font-size: 0.85rem; }
.link-ish { color: var(--accent); text-decoration: underline; }

.actions { display: flex; gap: 0.5rem; margin-top: 0.9rem; flex-wrap: wrap; }

.button {
  flex: 1 1 10rem;
  padding: 0.6rem 1rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}

.button:hover { filter: brightness(1.06); }
.button:disabled { opacity: 0.55; cursor: not-allowed; filter: none; }

.button-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.button-small { flex: 0 0 auto; padding: 0.3rem 0.7rem; font-size: 0.85rem; }

.file-summary {
  margin: 0.9rem 0 0;
  padding: 0.55rem 0.75rem;
  background: var(--bg);
  border-radius: 8px;
  color: var(--ink-muted);
  font-size: 0.87rem;
}

/* Status ------------------------------------------------------------------ */

.status-panel { display: flex; align-items: center; gap: 0.85rem; }
.status-panel p { margin: 0; color: var(--ink-muted); }

.spinner {
  width: 1.15rem;
  height: 1.15rem;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
  flex: none;
}

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 2s; }
}

/* Errors ------------------------------------------------------------------ */

.error-panel { border-color: var(--danger); background: var(--danger-bg); }
.error-panel h2 { color: var(--danger); }
.error-panel p { margin: 0 0 0.4rem; }
.error-code { color: var(--ink-muted); font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 0.8rem; }

/* Results ----------------------------------------------------------------- */

.results-header { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.results-header h2 { margin: 0 0 0.75rem; }
.timings { margin: 0 0 0.75rem; color: var(--ink-muted); font-size: 0.8rem; }

.card-result { border-top: 1px solid var(--line); padding-top: 0.9rem; margin-top: 0.9rem; }
.card-result:first-child { border-top: 0; padding-top: 0; margin-top: 0; }

.card-name { margin: 0; font-size: 1.05rem; font-weight: 600; }
.card-role { margin: 0.1rem 0 0.8rem; color: var(--ink-muted); font-size: 0.9rem; }

.confidence {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  vertical-align: middle;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
}

.confidence.low { background: var(--warn-bg); color: var(--warn); }

.field-grid { display: grid; grid-template-columns: 9rem 1fr; gap: 0.4rem 1rem; font-size: 0.92rem; }
.field-grid dt { color: var(--ink-muted); }
.field-grid dd { margin: 0; overflow-wrap: anywhere; }
.field-grid a { color: var(--accent); }

@media (max-width: 30rem) {
  .field-grid { grid-template-columns: 1fr; gap: 0.1rem; }
  .field-grid dd { margin-bottom: 0.5rem; }
}

.warnings-panel { border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); background: var(--warn-bg); }
.warnings-panel h2 { color: var(--warn); }
.warnings-panel ul { margin: 0; padding-left: 1.1rem; font-size: 0.9rem; }
.warnings-panel li { margin-bottom: 0.3rem; }

.code-block {
  margin: 0;
  padding: 0.85rem;
  background: var(--bg);
  border-radius: 8px;
  overflow-x: auto;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Footer ------------------------------------------------------------------ */

.footer { margin-top: 2rem; color: var(--ink-muted); font-size: 0.8rem; }
.footer code { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }