.trail-main [hidden] {
  display: none !important;
}

.trail-main {
  max-width: 1360px;
  margin: 0 auto;
  padding: clamp(32px, 5vw, 70px) clamp(20px, 5vw, 72px) 90px;
}

.trail-intro {
  max-width: 870px;
  margin-bottom: clamp(36px, 5vw, 62px);
}

.trail-intro h1 {
  max-width: 13ch;
  margin: 8px 0 20px;
  font-size: clamp(3.2rem, 7vw, 6.2rem);
  line-height: 0.99;
  letter-spacing: -0.055em;
}

.trail-intro > p:not(.eyebrow) {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.8vw, 1.32rem);
}

.trail-links,
.example-row,
.form-actions,
.step-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.trail-links {
  margin-top: 24px;
  font-size: 0.9rem;
}

.trail-links a,
.trail-explainer a {
  color: var(--accent-strong);
  font-weight: 700;
  text-underline-offset: 3px;
}

.model-chip {
  padding: 6px 12px;
  border: 1px solid #bbd8cf;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
}

.trail-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: stretch;
  gap: 22px;
}

.trail-panel {
  min-width: 0;
  padding: clamp(24px, 3vw, 38px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 14px 38px rgba(31, 42, 39, 0.06);
}

.trace-panel {
  background: #f1f7f4;
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 26px;
}

.panel-heading .eyebrow {
  margin: 0 0 4px;
}

.panel-heading h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.2vw, 2.1rem);
  line-height: 1.2;
}

.panel-index {
  display: inline-grid;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 12px;
  background: #d8ece4;
  color: var(--accent-strong);
  font-weight: 800;
}

#trace-form label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.93rem;
  font-weight: 750;
}

#trace-form textarea,
#trace-form select {
  width: 100%;
  border: 1px solid #bfcac4;
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

#trace-form textarea {
  min-height: 130px;
  padding: 14px 16px;
  resize: vertical;
  line-height: 1.5;
}

#trace-form select {
  min-height: 44px;
  padding: 8px 12px;
}

#trace-form :is(textarea, select, button):focus-visible,
.step-button:focus-visible {
  outline: 3px solid var(--warm);
  outline-offset: 3px;
}

.field-note,
.timing-note {
  color: var(--muted);
  font-size: 0.88rem;
}

.field-note {
  margin: 7px 0 0;
}

.example-row {
  margin: 20px 0 26px;
  color: var(--muted);
  font-size: 0.86rem;
}

.example {
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #f8fbf9;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

.example:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.setting-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.advanced-settings {
  margin: 22px 0 26px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.advanced-settings summary {
  color: var(--accent-strong);
  font-weight: 750;
  cursor: pointer;
}

.advanced-settings .setting-grid {
  margin-top: 16px;
}

.form-actions {
  margin-top: 24px;
}

.form-actions .button {
  border: 0;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.form-actions .button.secondary {
  border: 1px solid var(--line);
}

.form-actions .button[disabled] {
  opacity: 0.55;
  cursor: wait;
}

.service-status {
  min-height: 24px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.service-status[data-tone="error"] {
  color: #973b40;
  font-weight: 700;
}

.service-status[data-tone="ready"] {
  color: var(--accent-strong);
}

.empty-state {
  display: grid;
  align-content: center;
  min-height: 430px;
  padding: 26px;
  border: 1px dashed #a5c9bb;
  border-radius: 14px;
  text-align: center;
  color: var(--muted);
}

.empty-state p {
  max-width: 25rem;
  margin: 16px auto 0;
}

.empty-orbit {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--accent);
}

.result-label {
  display: block;
  margin: 0 0 9px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.token-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.token-piece,
#selected-token {
  display: inline-block;
  max-width: 100%;
  padding: 6px 8px;
  border: 1px solid #bfd6cb;
  border-radius: 7px;
  background: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.generated-text {
  min-height: 62px;
  margin: 0 0 22px;
  padding: 17px;
  border-left: 4px solid var(--warm);
  border-radius: 0 8px 8px 0;
  background: #fff;
  font-size: 1.1rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.step-controls {
  justify-content: space-between;
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 750;
}

.step-button {
  border: 1px solid #afc9bc;
  border-radius: 9px;
  padding: 8px 12px;
  background: #fff;
  color: var(--accent-strong);
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.step-button:disabled {
  opacity: 0.45;
  cursor: default;
}

.step-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  padding: 18px;
  border: 1px solid #c9dcd0;
  border-radius: 12px;
  background: #e3f0e9;
}

.step-summary strong {
  display: block;
  font-size: 1.4rem;
}

#selected-token {
  width: fit-content;
  background: #fff;
  font-size: 1rem;
}

.alternatives-title {
  margin: 24px 0 10px;
}

.alternatives {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.alternatives li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 12px;
  align-items: center;
}

.alternative-token {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.alternative-probability {
  font-variant-numeric: tabular-nums;
  font-weight: 750;
}

.probability-track {
  grid-column: 1 / -1;
  height: 7px;
  border-radius: 999px;
  background: #d7e5dc;
  overflow: hidden;
}

.probability-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.timing-note {
  margin-top: 24px;
}

.trail-explainer {
  display: grid;
  grid-template-columns: minmax(200px, 0.85fr) minmax(0, 1.15fr);
  gap: 18px 42px;
  margin-top: 24px;
  padding: clamp(24px, 3vw, 40px);
  border-radius: 18px;
  background: #e8ece6;
}

.trail-explainer h2 {
  margin: 12px 0 0;
  font-size: clamp(1.45rem, 2.3vw, 2rem);
  line-height: 1.2;
}

.trail-explainer p {
  grid-column: 2;
  margin: 0;
  color: #43504b;
}

@media (max-width: 920px) {
  .trail-grid,
  .trail-explainer {
    grid-template-columns: minmax(0, 1fr);
  }

  .trail-explainer p {
    grid-column: 1;
  }

  .empty-state {
    min-height: 250px;
  }
}

@media (max-width: 560px) {
  .setting-grid,
  .step-summary {
    grid-template-columns: minmax(0, 1fr);
  }

  .step-controls {
    gap: 6px;
  }

  .step-button {
    padding: 7px;
  }
}