.coach-page {
  padding: clamp(7rem, 12vw, 10rem) 0 5rem;
}
.coach-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem;
  margin-bottom: 2rem;
}
.coach-hero > div {
  max-width: 760px;
}
.coach-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.25rem 0 1.25rem;
}
.coach-tabs button,
.choice-grid button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  min-height: 44px;
}
.coach-tabs button[aria-pressed='true'],
.choice-grid button[aria-pressed='true'] {
  background: var(--text);
  color: var(--bg);
}
.coach-grid,
.mastery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}
.coach-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.25rem;
  display: grid;
  align-content: start;
  gap: 0.8rem;
  min-width: 0;
}
.coach-card h2,
.coach-card h3,
.coach-card p {
  margin: 0;
}
.coach-card.wide {
  grid-column: 1 / -1;
}
.mastery-row {
  display: grid;
  grid-template-columns: minmax(7rem, 1fr) 2fr auto;
  align-items: center;
  gap: 0.75rem;
}
.mastery-row span:first-child {
  overflow-wrap: anywhere;
}
.mastery-bar {
  height: 8px;
  background: var(--line);
  border-radius: 999px;
  overflow: hidden;
}
.mastery-bar i {
  display: block;
  width: calc(var(--score) * 100%);
  height: 100%;
  background: var(--brand);
  border-radius: inherit;
  transition: width 500ms var(--ease-out);
}
.coach-form,
.tutor-form {
  display: grid;
  gap: 1rem;
}
.coach-form label,
.tutor-form label {
  display: grid;
  gap: 0.4rem;
  font-weight: 650;
}
.coach-form select,
.coach-form input,
.tutor-form select,
.tutor-form textarea,
.trace-code,
.study-note {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  color: var(--text);
  padding: 0.8rem;
  font: inherit;
}
.tutor-form textarea,
.study-note {
  min-height: 110px;
  resize: vertical;
}
.trace-code {
  min-height: 210px;
  font: 500 0.9rem/1.65 var(--mono);
}
.choice-grid,
.coach-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.tutor-answer {
  border-left: 3px solid var(--brand);
  padding-left: 1rem;
  display: grid;
  gap: 0.75rem;
}
.trace-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.7fr);
  gap: 1rem;
}
.trace-lines,
.trace-vars {
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem;
  font: 500 0.86rem/1.7 var(--mono);
  overflow: auto;
}
.trace-line {
  display: block;
  padding-inline: 0.5rem;
  white-space: pre-wrap;
}
.trace-line.active {
  background: color-mix(in srgb, var(--brand) 20%, transparent);
  border-radius: 6px;
}
.reason {
  color: var(--muted);
  font-size: 0.9rem;
}
.search-results {
  display: grid;
  gap: 0.5rem;
}
.search-results a {
  display: block;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem;
}
@media (max-width: 700px) {
  .coach-page {
    padding: calc(var(--nav-h) + 2.75rem) 0 4rem;
  }
  .coach-hero,
  .trace-stage {
    grid-template-columns: 1fr;
  }
  .coach-hero .btn {
    width: 100%;
    justify-content: center;
  }
  .coach-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
  }
  .coach-tabs button:last-child {
    grid-column: 1 / -1;
  }
  .mastery-row {
    grid-template-columns: 1fr auto;
  }
  .mastery-bar {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}