.repair-switcher {
  display: inline-flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: 1.35rem;
  padding: .35rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: rgba(8, 16, 28, .6);
}

.repair-switcher a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: .45rem;
  padding: .55rem .75rem;
  color: var(--color-text-muted);
  border: 1px solid transparent;
  border-radius: 7px;
  font: 700 .75rem/1.2 Consolas, monospace;
  text-decoration: none;
}

.repair-switcher a:hover,
.repair-switcher a:focus-visible {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-hover);
}

.repair-switcher a[aria-current="page"] {
  color: #07111e;
  border-color: var(--repair-accent, var(--color-accent));
  background: var(--repair-accent, var(--color-accent));
}

.mutation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: .7rem;
}

.mutation-meta span {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  min-height: 30px;
  padding: .35rem .6rem;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(8, 16, 28, .55);
  font: 600 .7rem/1.2 Consolas, monospace;
}

.mutation-meta strong {
  color: var(--repair-accent, var(--color-accent));
  font-weight: 800;
}

.mutation-problem {
  max-width: 760px;
  margin: .75rem 0 0;
  color: var(--color-text-muted);
  font-size: .86rem;
  line-height: 1.55;
}

.mutation-problem strong {
  color: var(--color-text);
}

.repair-language-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.learning-challenge-dashboard {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.learning-challenge-dashboard .learning-next-card {
  grid-column: 1 / -1;
  min-height: 0;
}

.repair-language-card {
  --repair-card-accent: #72a8ff;
  position: relative;
  display: grid;
  min-height: 360px;
  grid-template-rows: auto auto 1fr auto;
  gap: 1rem;
  overflow: hidden;
  padding: clamp(1.3rem, 3vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--repair-card-accent) 38%, var(--color-border));
  border-radius: 16px;
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--repair-card-accent) 17%, transparent), transparent 18rem),
    linear-gradient(145deg, rgba(23, 37, 57, .96), rgba(12, 22, 36, .96));
  box-shadow: 0 20px 45px rgba(0, 0, 0, .2);
}

.repair-language-card.is-html { --repair-card-accent: #f2a65a; }

.repair-language-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--repair-card-accent);
  box-shadow: 0 0 24px var(--repair-card-accent);
  content: "";
}

.repair-card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.repair-card-language {
  display: grid;
  width: 3.2rem;
  height: 3.2rem;
  place-items: center;
  color: var(--repair-card-accent);
  border: 1px solid color-mix(in srgb, var(--repair-card-accent) 45%, transparent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--repair-card-accent) 9%, transparent);
  font: 800 .8rem Consolas, monospace;
}

.repair-card-progress {
  color: var(--repair-card-accent);
  font: 800 1.65rem/1 Consolas, monospace;
}

.repair-language-card h2,
.repair-language-card h3 {
  margin: 0;
  color: var(--color-text);
}

.repair-language-card > div > p,
.repair-language-card > p {
  margin: .55rem 0 0;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.repair-language-card .learning-progress-track {
  margin: .9rem 0 .65rem;
}

.repair-language-card .learning-progress-track span {
  background: linear-gradient(90deg, color-mix(in srgb, var(--repair-card-accent) 65%, #fff), var(--repair-card-accent));
}

.repair-card-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  align-self: end;
}

.repair-card-stats span {
  display: grid;
  gap: .15rem;
  min-width: 92px;
  padding: .65rem .75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: rgba(5, 12, 22, .35);
  color: var(--color-text-dim);
  font: .68rem Consolas, monospace;
}

.repair-card-stats strong {
  color: var(--repair-card-accent);
  font-size: 1rem;
}

.repair-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.repair-card-actions .php-button-primary {
  background: var(--repair-card-accent);
  border-color: var(--repair-card-accent);
  color: #07111e !important;
}

.repair-guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
}

.repair-guide-step {
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: rgba(20, 31, 46, .72);
}

.repair-guide-step > span {
  color: var(--color-accent);
  font: 800 .72rem Consolas, monospace;
}

.repair-guide-step h3 { margin: 1.2rem 0 .45rem; }
.repair-guide-step p { margin: 0; color: var(--color-text-muted); line-height: 1.6; }

.html-challenge-page {
  --repair-accent: #f2a65a;
  background:
    radial-gradient(circle at 88% 4%, rgba(242, 166, 90, .12), transparent 30rem),
    var(--color-bg);
}

.html-challenge-page .php-kicker,
.html-challenge-page .php-progress-row strong,
.html-challenge-page .php-userbar a,
.html-challenge-page .php-footer a {
  color: var(--repair-accent);
}

.html-challenge-page .php-button:hover,
.html-challenge-page .php-button:focus-visible,
.html-challenge-page .php-editor:focus-within {
  border-color: var(--repair-accent);
}

.html-challenge-page .php-button-primary {
  color: #17100a !important;
  border-color: var(--repair-accent);
  background: var(--repair-accent);
}

.html-challenge-page .php-button-primary:hover,
.html-challenge-page .php-button-primary:focus-visible {
  color: #17100a !important;
  border-color: #ffc486;
  background: #ffc486;
}

.html-challenge-page .php-code-display {
  max-height: 520px;
  white-space: pre;
  overflow-wrap: normal;
}

.html-challenge-page .php-editor-auto-height {
  min-height: 420px;
  max-height: 760px;
  overflow: hidden;
}

.html-challenge-page .php-editor-auto-height .php-code-highlight,
.html-challenge-page .php-editor-auto-height .php-textarea {
  min-height: 420px;
  max-height: 760px;
  overflow: auto;
  white-space: pre;
  overflow-wrap: normal;
}

.html-preview-panel {
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid rgba(242, 166, 90, .35);
  border-radius: 10px;
  background: #fff;
}

.html-preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem .85rem;
  color: #d8e2ef;
  background: #111b28;
  font: .72rem Consolas, monospace;
}

.html-preview-toolbar button {
  color: #f2a65a;
  border: 0;
  background: transparent;
  cursor: pointer;
  font: inherit;
}

.html-preview-frame {
  display: block;
  width: 100%;
  min-height: 360px;
  border: 0;
  background: #fff;
}

.html-preview-note {
  margin: .75rem 0 0;
  color: var(--color-text-dim);
  font: .72rem/1.5 Consolas, monospace;
}

@media (max-width: 760px) {
  .repair-language-grid,
  .repair-guide-grid,
  .learning-challenge-dashboard { grid-template-columns: 1fr; }
  .learning-challenge-dashboard .learning-next-card { grid-column: auto; }
  .repair-language-card { min-height: 0; }
  .repair-switcher { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .repair-switcher a { justify-content: center; }
  .html-preview-frame { min-height: 280px; }
}

@media (max-width: 480px) {
  .repair-card-actions { flex-direction: column; }
  .repair-card-actions .php-button { width: 100%; }
  .html-challenge-page .php-code-display,
  .html-challenge-page .php-editor-auto-height,
  .html-challenge-page .php-editor-auto-height .php-code-highlight,
  .html-challenge-page .php-editor-auto-height .php-textarea {
    min-height: 360px;
  }
}