/* ==========================================================================
   QCS Knowledge Base: brand layer over MkDocs Material.
   QCS brand palette and type. Change colours here, not in templates.
   ========================================================================== */

:root {
  --qcs-ink: #1a2332;
  --qcs-ink-2: #243246;
  --qcs-action: #0066cc;
  --qcs-action-dk: #0052a3;
  --qcs-accent: #6cc5e6;
  --qcs-page: #f0f2f5;
  --qcs-line: #e2e8f0;
  --qcs-radius: 10px;
}

/* ---------- Light scheme ---------- */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--qcs-ink);
  --md-primary-fg-color--light: var(--qcs-ink-2);
  --md-primary-fg-color--dark: #121a26;
  --md-primary-bg-color: #ffffff;
  --md-accent-fg-color: var(--qcs-action);
  --md-accent-fg-color--transparent: rgba(0, 102, 204, 0.1);
  --md-typeset-a-color: var(--qcs-action);
  --md-default-fg-color: #2d3e50;
}

/* ---------- Dark scheme ---------- */
[data-md-color-scheme="slate"] {
  --md-hue: 215;
  --md-primary-fg-color: #121a26;
  --md-primary-fg-color--light: var(--qcs-ink);
  --md-primary-fg-color--dark: #0c121b;
  --md-primary-bg-color: #e8eef5;
  --md-accent-fg-color: var(--qcs-accent);
  --md-accent-fg-color--transparent: rgba(108, 197, 230, 0.12);
  --md-typeset-a-color: var(--qcs-accent);
  --md-default-bg-color: #141c28;
}

/* ---------- Header ---------- */
.md-header,
.md-tabs {
  background: linear-gradient(180deg, var(--qcs-ink) 0%, var(--qcs-ink-2) 100%);
}

.md-header__button.md-logo img {
  height: 1.7rem;
  width: 1.7rem;
}

.md-tabs__link {
  font-weight: 500;
}

/* ---------- Typography ---------- */
.md-typeset h1 {
  color: var(--md-default-fg-color);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.md-typeset h2 {
  font-weight: 650;
}

.md-typeset .md-button {
  border-radius: 999px;
  font-weight: 600;
}

.md-typeset .md-button--primary {
  background-color: var(--qcs-action);
  border-color: var(--qcs-action);
  color: #fff;
}

.md-typeset .md-button--primary:hover,
.md-typeset .md-button--primary:focus {
  background-color: var(--qcs-action-dk);
  border-color: var(--qcs-action-dk);
}

/* ---------- Cards ---------- */
.md-typeset .grid.cards > ul > li,
.md-typeset .grid > .card {
  border-radius: var(--qcs-radius);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid > .card:hover {
  transform: translateY(-2px);
  border-color: transparent;
  box-shadow: 0 10px 28px rgba(0, 102, 204, 0.12);
}

.md-typeset .grid.cards .lg {
  color: var(--md-accent-fg-color);
}

/* ---------- Home: hero ---------- */
.qcs-hero {
  background:
    radial-gradient(1200px 400px at 85% -10%, rgba(108, 197, 230, 0.22), transparent 60%),
    linear-gradient(180deg, var(--qcs-ink-2) 0%, var(--qcs-ink) 100%);
  color: #fff;
}

.qcs-hero__inner.md-grid {
  box-sizing: border-box;
  max-width: 52rem;
  padding: 3.2rem 0.8rem 3.6rem;
}

.qcs-hero__mark {
  display: block;
  width: 3.2rem;
  height: 3.2rem;
  margin-bottom: 1rem;
}

.qcs-hero__eyebrow {
  margin: 0 0 0.4rem;
  color: var(--qcs-accent);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.qcs-hero__title {
  margin: 0 0 0.8rem;
  color: #fff;
  font-size: clamp(1.7rem, 4.2vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.qcs-hero__lede {
  max-width: 36rem;
  margin: 0 0 1.6rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  line-height: 1.65;
}

.qcs-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.qcs-hero .md-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.3rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.qcs-hero .md-button--primary {
  background: var(--qcs-action);
  border: 0.1rem solid var(--qcs-action);
  color: #fff;
}

.qcs-hero .md-button--primary:hover {
  background: var(--qcs-action-dk);
  border-color: var(--qcs-action-dk);
}

.qcs-hero__search {
  border: 0.1rem solid rgba(255, 255, 255, 0.35);
  color: #fff;
}

.qcs-hero__search:hover {
  border-color: var(--qcs-accent);
  color: var(--qcs-accent);
}

.qcs-hero__search kbd {
  padding: 0 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 4px;
  font-size: 0.65rem;
}

/* Home has no sidebars: give the body a comfortable measure. */
.md-content:has(.qcs-areas) .md-content__inner {
  box-sizing: border-box;
  max-width: 52rem;
  margin: 0 auto 1.2rem;
  padding: 0 0.8rem;
}

.md-main__inner:has(.qcs-areas) {
  margin-top: 0.4rem;
}

.md-typeset .qcs-section-title:first-child {
  margin-top: 1rem;
}

.md-typeset .qcs-section-title {
  margin-top: 2.2rem;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: 0.01em;
}

/* ---------- Home: learning path ---------- */
.md-typeset ol.qcs-path {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 1rem 0 1.2rem;
  padding: 0;
  list-style: none;
  counter-reset: qcs-step;
}

.md-typeset ol.qcs-path > li {
  position: relative;
  margin: 0;
  padding: 2.4rem 0.8rem 0 0;
  counter-increment: qcs-step;
}

/* Numbered node */
.md-typeset ol.qcs-path > li::before {
  content: counter(qcs-step);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--qcs-accent);
  color: var(--qcs-ink);
  font-weight: 700;
  font-size: 0.75rem;
  box-shadow: 0 0 0 4px var(--md-default-bg-color);
}

/* Connector line */
.md-typeset ol.qcs-path > li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 0.82rem;
  left: 1.7rem;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--qcs-accent), var(--md-default-fg-color--lightest));
}

.qcs-path__step {
  display: block;
  font-weight: 650;
  color: var(--md-default-fg-color);
}

.qcs-path__who {
  display: block;
  font-size: 0.7rem;
  color: var(--md-default-fg-color--light);
}

/* ---------- Home: audience ---------- */
.md-typeset .qcs-audience {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin: 0.4rem 0 1rem;
}

.md-typeset .qcs-audience > div {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 3px solid var(--md-accent-fg-color);
  border-radius: var(--qcs-radius);
  font-size: 0.72rem;
  line-height: 1.5;
}

.md-typeset .qcs-audience p {
  margin: 0;
}

.md-typeset .qcs-footnote {
  margin-top: 2rem;
  font-size: 0.7rem;
  color: var(--md-default-fg-color--light);
}

/* ---------- Small screens ---------- */
@media screen and (max-width: 44.9375em) {
  .md-typeset ol.qcs-path {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .md-typeset ol.qcs-path > li {
    padding: 0.1rem 0 0 2.6rem;
  }

  .md-typeset ol.qcs-path > li:not(:last-child)::after {
    top: 1.7rem;
    left: 0.82rem;
    right: auto;
    bottom: -0.9rem;
    width: 2px;
    height: auto;
    background: var(--md-default-fg-color--lightest);
  }

  .md-typeset .qcs-audience {
    grid-template-columns: repeat(2, 1fr);
  }
}