.model-trials {
  max-width: 1050px;
  margin: 0 auto;
  color: var(--ink);
  line-height: 1.55;
}
.model-trials * {
  box-sizing: border-box;
}
.model-trials [hidden] {
  display: none;
}
.model-trials .mt-intro {
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
}
.model-trials .mt-intro p {
  max-width: 650px;
}
.model-trials .mt-kicker {
  font-size: 0.8rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.model-trials .mt-lead {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
  margin: 0.5rem 0;
}
.model-trials .mt-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-width: 220px;
}
.model-trials button,
.model-trials input,
.model-trials select,
.model-trials textarea {
  font: inherit;
  color: var(--ink);
}
.model-trials button,
.model-trials select,
.model-trials input:not([type="checkbox"]),
.model-trials textarea,
.model-trials .mt-file {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.65rem 0.8rem;
  min-height: 44px;
}
.model-trials button,
.model-trials summary,
.model-trials .mt-file {
  cursor: pointer;
}
.model-trials button:hover:not(:disabled),
.model-trials .mt-file:hover {
  border-color: var(--ink);
}
.model-trials button:disabled {
  opacity: 0.5;
  cursor: default;
}
.model-trials :focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.model-trials .mt-file {
  font-weight: 400;
  position: relative;
  overflow: hidden;
  margin: 0;
}
.model-trials .mt-file input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  cursor: pointer;
}
.model-trials .mt-file:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.model-trials .mt-steps {
  display: flex;
  gap: 0.4rem;
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
  flex-wrap: wrap;
  margin-bottom: 1.7rem;
}
.model-trials .mt-steps button {
  border-color: transparent;
}
.model-trials .mt-steps [aria-current],
.model-trials .mt-primary {
  background: var(--ink);
  color: var(--bg);
}
.model-trials h2 {
  font-size: 1.5rem;
  line-height: 1.3;
  margin: 0 0 0.7rem;
  letter-spacing: -0.02em;
}
.model-trials h3 {
  font-size: 1.05rem;
  margin: 0 0 0.8rem;
}
.model-trials label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0.85rem 0;
}
.model-trials textarea,
.model-trials label > input:not([type="checkbox"]),
.model-trials select {
  display: block;
  width: 100%;
  margin-top: 0.4rem;
  font-weight: 400;
  min-width: 0;
}
.model-trials textarea {
  resize: vertical;
}
.model-trials .mt-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.model-trials .mt-columns > * {
  min-width: 0;
}
.model-trials .mt-card,
.model-trials .mt-group {
  border: 1px solid var(--line);
  padding: 1.1rem;
  border-radius: 0.65rem;
  margin: 0.7rem 0 1.2rem;
}
.model-trials .mt-help,
.model-trials .mt-footnote,
.model-trials small {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}
.model-trials .mt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin: 1rem 0;
}
.model-trials .mt-grow {
  flex: 1;
  min-width: 180px;
}
.model-trials summary {
  min-height: 44px;
  padding: 0.7rem 0;
}
.model-trials .mt-footnote {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}
.model-trials .mt-banner {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 0.85rem;
  background: color-mix(in srgb, var(--accent) 8%, var(--bg));
}
.model-trials #mt-message:empty {
  display: none;
}
.model-trials #mt-message {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
}
.model-trials #mt-storage {
  font-size: 0.8rem;
  color: var(--muted);
}
.model-trials #mt-storage[data-failed] {
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding-left: 0.7rem;
}
.model-trials .mt-strategies {
  border: 0;
  padding: 0;
  margin: 1rem 0;
}
.model-trials .mt-strategies label {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.9rem;
  display: flex;
  gap: 0.8rem;
  align-items: start;
}
.model-trials input[type="checkbox"] {
  accent-color: var(--ink);
  width: 1.2rem;
  height: 1.2rem;
  flex-shrink: 0;
  margin-top: 0.25rem;
}
.model-trials small {
  display: block;
}
.model-trials .mt-count {
  font-size: 1.3rem;
  font-weight: 600;
}
.model-trials pre {
  font: inherit;
  font-size: 0.9rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 350px;
  overflow: auto;
  background: color-mix(in srgb, var(--ink) 3%, var(--bg));
  padding: 1rem;
  border-radius: 0.4rem;
}
.model-trials .mt-ratings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.7rem;
}
.model-trials .mt-ratings label {
  margin: 0.3rem 0;
}
.model-trials .mt-scroll {
  overflow-x: auto;
}
.model-trials table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.85rem;
}
.model-trials th,
.model-trials td {
  text-align: left;
  padding: 0.65rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  overflow-wrap: anywhere;
  min-width: 100px;
}
.model-trials th:first-child {
  min-width: 160px;
}
.model-trials .mt-group p {
  margin: 0.5rem 0;
}
.model-trials .mt-group {
  overflow-wrap: anywhere;
}
.model-trials dialog {
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  max-width: min(680px, calc(100vw - 2rem));
  padding: 1.5rem;
  width: 100%;
}
.model-trials dialog::backdrop {
  background: rgb(0 0 0 / 0.45);
}
.model-trials dialog textarea {
  width: 100%;
}
.model-trials .mt-empty {
  padding: 2rem 1rem;
  border: 1px dashed var(--line);
  border-radius: 0.5rem;
  color: var(--muted);
}
@media (max-width: 650px) {
  .model-trials .mt-intro {
    display: block;
  }
  .model-trials .mt-tools {
    max-width: none;
    margin: 1rem 0;
  }
  .model-trials .mt-columns {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .model-trials .mt-steps {
    gap: 0.2rem;
  }
  .model-trials .mt-steps button {
    font-size: 0.8rem;
    padding: 0.5rem;
  }
  .model-trials .mt-card,
  .model-trials .mt-group {
    padding: 0.8rem;
  }
  .model-trials h2 {
    font-size: 1.3rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  .model-trials * {
    animation: none;
    transition: none;
    scroll-behavior: auto;
  }
}
.model-trials .mt-tools {
  align-items: flex-start;
}
.model-trials .mt-tools details > button,
.model-trials .mt-tools details > .mt-file {
  display: block;
  margin: 0.4rem 0;
}

/* Keep later stages focused on the experiment rather than repeating the introduction. */
.model-trials[data-stage]:not([data-stage="brief"]) .mt-intro > div:first-child {
  display: none;
}
.model-trials[data-stage]:not([data-stage="brief"]) .mt-intro {
  justify-content: flex-end;
}
@media (min-width: 800px) {
  .model-trials .mt-strategies {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
  }
}