/* MCP Prompts series (content/blog/posts/*mcp*). Scoped to .mcp-article.
   Uses the site theme tokens (--foreground, --card, --border, ...) so it
   follows the theme switcher; accents get a darker shade in light mode.
   Animations only touch opacity and transform, and are off for
   prefers-reduced-motion. */

.mcp-article {
  --mcp-cyan: #0e7490;
  --mcp-blue: #1d4ed8;
  --mcp-violet: #6d28d9;
  --mcp-green: #047857;
  --mcp-amber: #b45309;
  --mcp-pink: #be185d;
  --mcp-soft: color-mix(in srgb, var(--mcp-blue) 6%, var(--card));
}
.active-dark-mode .mcp-article {
  --mcp-cyan: #22d3ee;
  --mcp-blue: #60a5fa;
  --mcp-violet: #a78bfa;
  --mcp-green: #34d399;
  --mcp-amber: #fbbf24;
  --mcp-pink: #f472b6;
}

/* ---- Hero: navy band, text left, image right ---- */
.mcp-article > header {
  position: relative;
  isolation: isolate;
  padding-bottom: 3rem;
  /* Under the full-width band below; a fallback, and what contrast checkers see. */
  background-color: #070f2b;
}
.mcp-article > header::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0 auto 0 50%;
  width: 100vw;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 85% 20%, rgb(139 92 246 / 0.28), transparent 38%),
    radial-gradient(circle at 10% 90%, rgb(34 211 238 / 0.16), transparent 34%),
    linear-gradient(160deg, #050b1f 0%, #0b1638 55%, #120c35 100%);
}
.mcp-article > header,
.mcp-article > header nav,
.mcp-article > header > div {
  color: #b9c5de;
}
.mcp-article > header a:hover {
  color: #fff;
}
.mcp-article > header [aria-current="page"],
.mcp-article > header h1 {
  color: #fff;
}
.mcp-article > header > p:first-of-type {
  color: #67e8f9;
}
.mcp-article > header > p:nth-of-type(2) {
  color: #c9d3ea;
}
.mcp-article > header .share-link {
  border-color: rgb(255 255 255 / 0.2);
  color: #dbe4f5;
  background: rgb(255 255 255 / 0.04);
}
.mcp-article > header .share-link:hover {
  background: rgb(255 255 255 / 0.1);
  color: #fff;
}
.mcp-article > header img {
  border-color: rgb(255 255 255 / 0.14);
  box-shadow: 0 30px 70px rgb(0 0 0 / 0.45);
}
@media (min-width: 1024px) {
  .mcp-article > header {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    column-gap: 3rem;
    align-content: start;
  }
  .mcp-article > header > * {
    grid-column: 1;
  }
  .mcp-article > header > img {
    grid-column: 2;
    grid-row: 1 / span 7;
    align-self: center;
    margin-top: 2.5rem;
  }
}

/* ---- Body typography touches ---- */
.mcp-article .article-body blockquote {
  margin-inline: 0;
  padding: 0.9rem 1.2rem;
  border-left: 4px solid var(--mcp-cyan);
  border-radius: 0 0.75rem 0.75rem 0;
  background: var(--mcp-soft);
  color: var(--foreground);
  font-style: italic;
}
.mcp-article .article-body blockquote p {
  margin: 0;
}
.mcp-article .article-body caption.sr-only {
  position: absolute;
}
.mcp-article .article-body h2[id],
.mcp-article .article-body h3[id],
.mcp-article [id="quick-answer"] {
  scroll-margin-top: calc(var(--site-header-height) + 1.5rem);
}
.mcp-sim {
  display: inline-block;
  padding: 0.05rem 0.5rem;
  border: 1px dashed color-mix(in srgb, var(--mcp-amber) 60%, transparent);
  border-radius: 999px;
  color: var(--mcp-amber);
  font-size: 0.72rem;
  font-weight: 700;
  font-style: normal;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: 0.1em;
}

/* ---- Syntax colours (code blocks are dark in both themes) ---- */
.mcp-article .tok-key { color: #7dd3fc; }
.mcp-article .tok-str { color: #86efac; }
.mcp-article .tok-num { color: #fcd34d; }
.mcp-article .tok-lit { color: #f9a8d4; }
.mcp-article .tok-kw { color: #c4b5fd; }
.mcp-article .tok-com { color: #94a3b8; font-style: italic; }

/* ---- Flow diagrams ---- */
.mcp-flow {
  margin: 2.25rem 0;
  padding: clamp(1.1rem, 3vw, 1.75rem);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background:
    radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--mcp-cyan) 10%, transparent), transparent 40%),
    radial-gradient(circle at 92% 100%, color-mix(in srgb, var(--mcp-violet) 10%, transparent), transparent 40%),
    var(--card);
}
.mcp-flow figcaption,
.mcp-roles figcaption {
  display: grid;
  gap: 0.25rem;
  margin-bottom: 1.4rem;
}
.mcp-flow figcaption strong,
.mcp-roles figcaption strong {
  font-size: 1.15rem;
}
.mcp-flow figcaption span,
.mcp-roles figcaption span {
  color: var(--muted-foreground);
  font-size: 0.92rem;
}
.mcp-article .article-body .mcp-flow ol,
.mcp-article .article-body .mcp-roles ol,
.mcp-article .article-body .mcp-benefits {
  margin: 0;
  padding: 0;
  list-style: none;
}
.mcp-flow ol {
  display: flex;
  gap: 2rem;
}
.mcp-flow__step {
  --accent: var(--mcp-blue);
  position: relative;
  display: flex;
  flex: 1 1 0;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  margin: 0 !important;
  text-align: center;
}
.mcp-flow__step--user { --accent: var(--mcp-blue); }
.mcp-flow__step--prompt { --accent: var(--mcp-cyan); }
.mcp-flow__step--llm { --accent: var(--mcp-violet); }
.mcp-flow__step--tool { --accent: var(--mcp-cyan); }
.mcp-flow__step--answer { --accent: var(--mcp-green); }
.mcp-flow__step--check { --accent: var(--mcp-amber); }
.mcp-flow__icon {
  flex: none;
  width: 3.4rem;
  height: 3.4rem;
  padding: 0.8rem;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--accent) 12%, var(--background));
  color: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 30%, transparent);
}
.mcp-flow__text {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}
.mcp-flow__text strong {
  font-size: 0.95rem;
  line-height: 1.3;
}
.mcp-flow__text small {
  color: var(--muted-foreground);
  font-size: 0.8rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.mcp-flow__arrow {
  position: absolute;
  top: 1.2rem;
  right: -1.85rem;
  width: 1.7rem;
  height: 0.9rem;
  fill: none;
  stroke: var(--mcp-cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mcp-flow__arrow path:first-child {
  stroke-dasharray: 4 4;
}

/* Vertical flows: icon beside text, arrow pointing down */
.mcp-flow--column ol {
  flex-direction: column;
  gap: 1.5rem;
}
.mcp-flow--column .mcp-flow__step {
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  text-align: left;
}
.mcp-flow--column .mcp-flow__icon {
  width: 3rem;
  height: 3rem;
  padding: 0.7rem;
}
.mcp-flow--column .mcp-flow__arrow {
  top: auto;
  right: auto;
  bottom: -1.3rem;
  left: 0.65rem;
  transform: rotate(90deg);
}

/* Wrapped flows: four per row on desktop, two on phones */
.mcp-flow--wrap ol {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.75rem 2rem;
}
.mcp-flow--wrap .mcp-flow__step:nth-child(4n) .mcp-flow__arrow {
  display: none;
}

@media (max-width: 720px) {
  .mcp-flow--row ol {
    flex-direction: column;
    gap: 1.5rem;
  }
  .mcp-flow--row .mcp-flow__step {
    flex-direction: row;
    gap: 1rem;
    text-align: left;
  }
  .mcp-flow--row .mcp-flow__arrow {
    top: auto;
    right: auto;
    bottom: -1.3rem;
    left: 0.85rem;
    transform: rotate(90deg);
  }
  .mcp-flow--wrap ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .mcp-flow--wrap .mcp-flow__step:nth-child(4n) .mcp-flow__arrow {
    display: block;
  }
  .mcp-flow--wrap .mcp-flow__step:nth-child(2n) .mcp-flow__arrow {
    display: none;
  }
}

/* ---- Roles diagram: prompt / LLM / tools ---- */
.mcp-roles {
  margin: 2.25rem 0;
}
.mcp-roles ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.mcp-role {
  --accent: var(--mcp-cyan);
  display: grid;
  justify-items: start;
  gap: 0.35rem;
  margin: 0 !important;
  padding: 1.25rem;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: 1.1rem;
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 10%, var(--card)), var(--card));
}
.mcp-role--llm { --accent: var(--mcp-violet); }
.mcp-role--tool { --accent: var(--mcp-green); }
.mcp-role .mcp-flow__icon {
  width: 2.8rem;
  height: 2.8rem;
  padding: 0.6rem;
}
.mcp-role strong {
  margin-top: 0.4rem;
  font-size: 1.1rem;
}
.mcp-role__equals {
  display: none;
}
.mcp-role em {
  color: var(--accent);
  font-size: 0.85rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.mcp-article .article-body .mcp-role p {
  margin: 0.2rem 0 0;
  color: var(--muted-foreground);
  font-size: 0.92rem;
  line-height: 1.55;
}
@media (max-width: 720px) {
  .mcp-roles ol {
    grid-template-columns: 1fr;
  }
}

/* ---- Benefits grid ---- */
.mcp-benefits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.mcp-benefit {
  --accent: var(--mcp-green);
  margin: 0 !important;
  padding: 1.15rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-left: 4px solid var(--accent);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--accent) 7%, var(--card));
}
.mcp-benefit--blue { --accent: var(--mcp-blue); }
.mcp-benefit--violet { --accent: var(--mcp-violet); }
.mcp-benefit--pink { --accent: var(--mcp-pink); }
.mcp-benefit strong {
  color: var(--accent);
  font-size: 1.05rem;
}
.mcp-article .article-body .mcp-benefit p {
  margin: 0.3rem 0 0;
  color: var(--foreground);
  font-size: 0.95rem;
  line-height: 1.6;
}
@media (max-width: 640px) {
  .mcp-benefits {
    grid-template-columns: 1fr;
  }
}

/* ---- Prompt definition card (always dark, like a client UI) ---- */
.mcp-card {
  display: grid;
  gap: 0.5rem;
  max-width: 34rem;
  margin: 2rem auto;
  padding: 1.4rem 1.5rem;
  border: 1px solid #23406b;
  border-radius: 1.1rem;
  background: linear-gradient(160deg, #0b1638, #08102a);
  box-shadow: 0 24px 60px rgb(3 10 30 / 0.35);
  color: #dbe6ff;
}
.mcp-card__badge {
  color: #67e8f9;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.mcp-card > strong {
  color: #fff;
  font-size: 1.2rem;
}
.mcp-article .article-body .mcp-card code {
  border: 0;
  background: none;
  padding: 0;
  color: #7dd3fc;
}
.mcp-card__name {
  font-size: 0.85rem;
}
.mcp-article .article-body .mcp-card p {
  margin: 0;
  color: #b9c5de;
  font-size: 0.95rem;
  line-height: 1.55;
}
.mcp-article .article-body .mcp-card ul {
  display: grid;
  gap: 0.5rem;
  margin: 0.4rem 0 0;
  padding: 0;
  list-style: none;
}
.mcp-card li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: baseline;
  margin: 0 !important;
  padding: 0.6rem 0.8rem;
  border: 1px solid #1f365c;
  border-radius: 0.7rem;
  background: rgb(255 255 255 / 0.03);
  font-size: 0.88rem;
}
.mcp-card li span {
  color: #b9c5de;
}
.mcp-card li em {
  color: #fcd34d;
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 700;
  text-transform: uppercase;
}
@media (max-width: 520px) {
  .mcp-card li {
    grid-template-columns: 1fr auto;
  }
  .mcp-card li span {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}

/* ---- Evidence and incident report ---- */
.mcp-evidence {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  border: 1px solid color-mix(in srgb, var(--mcp-amber) 40%, var(--border));
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--mcp-amber) 7%, var(--card));
}
.mcp-evidence > span {
  flex: none;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--mcp-amber);
  color: var(--background);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.mcp-article .article-body .mcp-evidence p {
  margin: 0;
}
.mcp-report {
  padding: clamp(1.2rem, 3vw, 1.75rem);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  background: var(--card);
}
.mcp-article .article-body .mcp-report__title {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 700;
}
.mcp-article .article-body .mcp-report dl {
  display: grid;
  gap: 0;
  margin: 0;
}
.mcp-article .article-body .mcp-report dl > div {
  display: grid;
  grid-template-columns: 9rem 1fr;
  margin: 0;
  gap: 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
}
.mcp-report dt {
  color: var(--mcp-cyan);
  font-size: 0.85rem;
  font-weight: 700;
}
.mcp-report dd {
  margin: 0;
}
@media (max-width: 560px) {
  .mcp-article .article-body .mcp-report dl > div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* ---- Series navigation and sources ---- */
.mcp-series {
  margin-top: 2rem;
}
.mcp-article .article-body .mcp-series h2 {
  margin-top: 0;
  font-size: 1.25rem;
}
.mcp-article .article-body .mcp-series ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}
.mcp-series li {
  margin: 0 !important;
}
.mcp-series li > a,
.mcp-series li[aria-current] {
  display: grid;
  gap: 0.25rem;
  height: 100%;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--card);
  color: var(--foreground);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.mcp-series li > a:hover,
.mcp-series li > a:focus-visible {
  border-color: var(--mcp-cyan);
  transform: translateY(-2px);
}
.mcp-series li[aria-current] {
  border-color: color-mix(in srgb, var(--mcp-cyan) 55%, var(--border));
  background: color-mix(in srgb, var(--mcp-cyan) 9%, var(--card));
}
.mcp-series span {
  color: var(--mcp-cyan);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.mcp-series small {
  color: var(--muted-foreground);
  font-size: 0.85rem;
  line-height: 1.45;
}
@media (max-width: 720px) {
  .mcp-article .article-body .mcp-series ol {
    grid-template-columns: 1fr;
  }
}
.mcp-sources {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
}
.mcp-article .article-body .mcp-sources h2 {
  margin-top: 0;
  font-size: 1.25rem;
}

/* ---- Interactive quiz ---- */
.mcp-quiz {
  margin: 3rem 0 1rem;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--mcp-violet) 35%, var(--border));
  border-radius: 1.25rem;
  background:
    radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--mcp-violet) 12%, transparent), transparent 45%),
    var(--card);
}
.mcp-quiz__head h2 {
  margin: 0.4rem 0 0.25rem;
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 700;
}
.mcp-quiz__head p {
  color: var(--muted-foreground);
  font-size: 0.9rem;
}
.mcp-quiz__badge,
.mcp-quiz__count {
  color: var(--mcp-violet);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.mcp-quiz__progress {
  height: 6px;
  margin: 1.1rem 0 1.4rem;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--mcp-violet) 15%, var(--muted));
}
.mcp-quiz__progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22d3ee, #8b5cf6);
  transition: width 0.3s ease;
}
.mcp-quiz fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}
.mcp-quiz legend {
  display: grid;
  gap: 0.3rem;
  width: 100%;
  margin-bottom: 1rem;
}
.mcp-quiz h3 {
  font-size: 1.15rem;
  font-weight: 650;
  line-height: 1.45;
}
.mcp-quiz h3:focus {
  outline: none;
}
.mcp-quiz h3:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 4px;
  border-radius: 4px;
}
.mcp-quiz__options {
  display: grid;
  gap: 0.6rem;
}
.mcp-quiz__option {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-height: 3.25rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--background);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.mcp-quiz__option:hover {
  border-color: color-mix(in srgb, var(--mcp-violet) 50%, var(--border));
}
.mcp-quiz__option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.mcp-quiz__option:has(input:focus-visible) {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}
.mcp-quiz__option:has(input:disabled) {
  cursor: default;
}
.mcp-quiz__letter {
  display: grid;
  flex: none;
  width: 1.9rem;
  height: 1.9rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}
.mcp-quiz__option.is-selected {
  border-color: var(--mcp-violet);
  background: color-mix(in srgb, var(--mcp-violet) 9%, var(--background));
}
.mcp-quiz__option.is-selected .mcp-quiz__letter {
  border-color: var(--mcp-violet);
  background: var(--mcp-violet);
  color: var(--background);
}
.mcp-quiz__option.is-correct {
  border-color: var(--mcp-green);
  background: color-mix(in srgb, var(--mcp-green) 10%, var(--background));
}
.mcp-quiz__option.is-correct .mcp-quiz__letter {
  border-color: var(--mcp-green);
  background: var(--mcp-green);
  color: var(--background);
}
.mcp-quiz__option.is-incorrect {
  border-color: var(--destructive);
  background: color-mix(in srgb, var(--destructive) 8%, var(--background));
}
.mcp-quiz__mark {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}
.is-correct .mcp-quiz__mark {
  color: var(--mcp-green);
}
.is-incorrect .mcp-quiz__mark {
  color: var(--destructive);
}
.mcp-quiz__feedback p {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 0.8rem;
  line-height: 1.6;
}
.mcp-quiz__feedback .is-correct {
  background: color-mix(in srgb, var(--mcp-green) 12%, transparent);
}
.mcp-quiz__feedback .is-incorrect {
  background: color-mix(in srgb, var(--destructive) 10%, transparent);
}
.mcp-quiz__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-top: 1.25rem;
}
.mcp-quiz__button {
  min-height: 2.9rem;
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  background: var(--link-button, #0072c6);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
.mcp-quiz__button:hover:not(:disabled) {
  filter: brightness(1.12);
}
.mcp-quiz__button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.mcp-quiz__button:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
}
.mcp-quiz__score {
  color: var(--muted-foreground);
  font-size: 0.9rem;
}
.mcp-quiz__result h3 {
  font-size: 1.4rem;
}
.mcp-quiz__result p {
  margin: 0.5rem 0 1.25rem;
  color: var(--muted-foreground);
}

/* ---- Motion: gentle entrance, flowing arrows, soft glow ---- */
@media (prefers-reduced-motion: no-preference) {
  .mcp-flow__step,
  .mcp-role {
    animation: mcp-rise 0.6s cubic-bezier(0.2, 0.7, 0.2, 1) both;
    animation-delay: calc(var(--i, 0) * 90ms);
  }
  .mcp-flow__arrow path:first-child {
    animation: mcp-dash 1.2s linear infinite;
  }
  .mcp-flow__step--llm .mcp-flow__icon,
  .mcp-flow__step--answer .mcp-flow__icon {
    animation: mcp-glow 3.2s ease-in-out infinite;
  }
  /* Where supported, play the entrance as the diagram scrolls into view. */
  @supports (animation-timeline: view()) {
    .mcp-flow__step,
    .mcp-role {
      animation-timeline: view();
      animation-range: entry 0% entry 60%;
      animation-delay: 0s;
    }
  }
}
@keyframes mcp-rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes mcp-dash {
  to {
    stroke-dashoffset: -8;
  }
}
@keyframes mcp-glow {
  50% {
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 14%, transparent);
  }
}