:root {
  color-scheme: dark;
  --fg: #e6e9ef;
  --muted: #8b94a5;
  --bg: #14161a;
  --bg-soft: #1d2027;
  --bg-elev: #232732;
  --border: #2c313c;
  --primary: #c4a7ff;
  --primary-strong: #b794f6;
  --primary-fg: #14161a;
  --error-bg: #2a1418;
  --error-fg: #f5808d;
  --radius: 6px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  /* The arrow repeats the --fg hex because url() cannot read a variable. */
  --select-arrow: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%23e6e9ef' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/></svg>");
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
/* The name and the links look like inline code, as in the report header. */
.site-header .brand, .site-header nav a {
  display: inline-block;
  line-height: 1.5;
  font-family: var(--mono);
  font-size: 1rem;
  padding: 0.12em 0.4em;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--fg);
}
.site-header nav a { margin-left: 0.5rem; }
.site-header .brand:hover, .site-header nav a:hover { border-color: var(--primary); }

.site-footer {
  text-align: center;
  color: var(--muted);
  padding: 1rem;
  border-top: 1px solid var(--border);
}
.site-footer a { color: inherit; text-decoration: none; }
.site-footer a:hover { color: var(--fg); }

/* Inline code matches the header of the report. */
code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 0.08em 0.35em;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid var(--border);
}

h1, h2, h3 { line-height: 1.2; margin-top: 0; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }

.muted { color: var(--muted); }
.hint { color: var(--muted); }

a { color: var(--primary); }
a:hover { color: var(--primary-strong); }

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  background: var(--bg-soft);
}
/* The card's own padding sets the gap under the heading, so the content
   that starts a card adds none of its own. In a fieldset that content
   follows the legend. */
.card > :first-child, .card > legend + * { margin-top: 0; }
fieldset.card { display: block; }
fieldset.card legend {
  font-weight: 600;
  padding: 0 0.4rem;
}

.intro { margin-bottom: 1rem; }

label { display: block; margin: 0.4rem 0; }
label.check { display: flex; align-items: center; gap: 0.4rem; }

input[type="text"], input[type="number"], select {
  width: 100%;
  padding: 0.4rem 0.5rem;
  font: inherit;
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
}
/* The arrow the platform draws takes the select's color, which the
   placeholder rule below greys, so the select draws its own instead. */
select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 1.9rem;
  background-image: var(--select-arrow);
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  background-size: 0.7rem;
}

/* A placeholder is a prompt, not a value, so the closed select greys while
   it holds the choice. The option rule keeps the open list readable where the
   platform draws it in the select's color. */
select:has(option[value=""]:checked) { color: var(--muted); }
select option { color: var(--fg); }

input[type="text"]:focus, input[type="number"]:focus, select:focus,
input[type="file"]:focus {
  outline: 2px solid var(--primary);
  outline-offset: -1px;
}

input[type="file"] {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font: inherit;
  max-width: 100%;
}
input[type="file"]::file-selector-button {
  font: inherit;
  margin-right: 0.6rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--fg);
  cursor: pointer;
}
input[type="file"]::file-selector-button:hover {
  background: var(--border);
}

.file-pick { display: block; }
.file-pick > span { font-weight: 500; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem 1rem;
  margin-top: 0.5rem;
}

/* The wrapper of a dependent option carries no look of its own. */
.dependent { border: 0; margin: 0; padding: 0; min-width: 0; }

.set-field { margin: 0.4rem 0; }
.set-field .set-label { display: block; }
.set-field .check { margin: 0.15rem 0 0 0.25rem; }

details {
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
  padding-top: 0.5rem;
}
details:not(.card):first-of-type { border-top: 0; padding-top: 0; }
summary {
  cursor: pointer;
  font-weight: 600;
  padding: 0.25rem 0;
}

.condition-row {
  padding: 0.6rem 0.75rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  background: var(--bg-elev);
}
.condition-head {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.condition-head input[type="text"] { flex: 1; }
.condition-files {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.5rem 1rem;
}
.condition-row .hint { margin: 0.3rem 0 0; }

button, .button {
  display: inline-block;
  font: inherit;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--fg);
  border-radius: var(--radius);
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: background 0.12s ease, border-color 0.12s ease;
}
button:hover, .button:hover {
  background: var(--border);
  border-color: var(--primary);
}
button:disabled, button:disabled:hover {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--border);
}
.submit-wrap:not([title=""]) { cursor: not-allowed; }

button.primary, .button.primary {
  background: var(--primary);
  color: var(--primary-fg);
  border-color: var(--primary);
  font-weight: 600;
}
button.primary:hover, .button.primary:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
}
button.remove-row { padding: 0.4rem 0.7rem; }

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

/* The limits sit beside the button, which stays at the right on any width. */
.submit-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}
.submit-row .hint { margin: 0; }
.submit-row .submit-wrap { margin-left: auto; }

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.header-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }

/* A button that opens the downloads of one condition below itself. The rule
   for the sections of the form gives every details a top border and spacing,
   which a button must not have. */
.menu {
  position: relative;
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}
.menu > summary { list-style: none; }
.menu > summary::-webkit-details-marker { display: none; }
.menu[open] > summary { border-color: var(--primary); }

.menu-items {
  position: absolute;
  z-index: 5;
  top: calc(100% + 0.25rem);
  left: 0;
  min-width: 100%;
  display: flex;
  flex-direction: column;
  padding: 0.25rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.menu-items a, .menu-items button {
  padding: 0.3rem 0.6rem;
  border: 0;
  border-radius: var(--radius);
  background: none;
  font: inherit;
  text-align: left;
  color: var(--fg);
  text-decoration: none;
  white-space: nowrap;
}
.menu-items a:hover, .menu-items button:hover { background: var(--border); }

.copy-url {
  display: flex;
  gap: 0.4rem;
  align-items: stretch;
  margin-top: 0.25rem;
  max-width: 38rem;
}
.copy-url input {
  flex: 1;
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.35rem 0.5rem;
  background: var(--bg-elev);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.copy-url button { padding: 0.35rem 0.7rem; }

/* The live cmuts plot report, embedded via <iframe>. */
.report-frame {
  width: 100%;
  height: 85vh;
  border: 1px solid #d9dee6;
  border-radius: 8px;
  background: #fff;
  margin: 0.5rem 0 1rem;
}

pre.log {
  background: #0b0d12;
  color: #d6e1f0;
  border: 1px solid var(--border);
  padding: 0.75rem;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.85rem;
  white-space: pre-wrap;
  max-height: 30rem;
}

.error { border-color: var(--error-fg); background: var(--error-bg); }
.error h1 { color: var(--error-fg); }
.error-msg { color: var(--error-fg); font-weight: 600; white-space: pre-line; }