/* ==========================================================================
   Zenix Academy — page shell: container, header, nav, drawer, footer
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--page);
  margin-inline: auto;
  padding-inline: var(--page-pad);
}

.section { padding-block: var(--section-y); position: relative; }
.section--tint  { background: var(--surface-2); }
.section--paper { background: var(--surface); }

.section-head {
  max-width: 62ch;
  margin-inline: auto;
  text-align: center;
  margin-block-end: clamp(2.5rem, 5vw, 4rem);
}
.section-head .lead { margin-inline: auto; margin-block-start: 1rem; }

/* Typographic, not a pill. A short drawn rule + the label reads as an editorial
   kicker; the soft-teal pill with a dot in front of it is the single most
   template-looking component on a landing page, so it is gone. */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--accent-ink);
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.6;
  margin-block-end: 1.1rem;
}
.eyebrow::before {
  content: "";
  inline-size: 30px;
  block-size: 2px;
  border-radius: 2px;
  background: var(--accent-grad);
  flex: none;
}
.section-head .eyebrow { justify-content: center; }

/* On the deep panels the rule and the label both have to lift off the ground. */
.eyebrow--dark { color: #9fd8d5; }
.eyebrow--dark::before { background: linear-gradient(90deg, #6fc3c0, rgba(111, 195, 192, .25)); }


/* --------------------------------------------------------------- header --- */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  background: rgba(245, 249, 250, .78);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-block-end: 1px solid transparent;
  transition: background var(--t-med) var(--ease),
              border-color var(--t-med) var(--ease),
              box-shadow var(--t-med) var(--ease);
  padding-block-start: env(safe-area-inset-top);
}
.site-header.is-stuck {
  background: rgba(255, 255, 255, .88);
  border-block-end-color: var(--rule);
  box-shadow: var(--shadow-sm);
}

.header-bar {
  min-block-size: var(--header-h);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* --- brand lockup --- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  color: inherit;
  flex: none;
}
/* The artwork is already a squircle with transparent corners, so the shadow
   must follow its alpha (drop-shadow), not a CSS rounded box. border-radius
   here would clip against a shape that is already rounded. */
.brand__mark {
  inline-size: 40px; block-size: 40px;
  filter: drop-shadow(0 2px 4px rgba(15, 42, 47, .2));
  transition: transform var(--t-med) var(--ease-out);
}
.brand:hover .brand__mark { transform: rotate(-6deg) scale(1.06); }
/* inline-block is load-bearing. .brand__sub is display:block, so inside a bare
   inline it splits out and takes the full width of the *column* instead of the
   lockup — which in an RTL column threw the tracked Latin sub-line to the far
   left while the wordmark stayed right. Shrink-wrapping the lockup makes both
   lines share one box, and text-align:start (LTR here) lines them up on the
   same left edge. */
.brand__word {
  display: inline-block;
  font-family: var(--font-wordmark);
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
  font-weight: 700;
  font-size: 1.28rem;
  line-height: 1.05;
  white-space: nowrap;
}
.brand__word i { font-style: normal; color: var(--accent-ink); }
.brand__word b { font-weight: 600; color: var(--ink); }
.brand__sub {
  display: block;
  font-size: .5rem;
  letter-spacing: .34em;
  color: var(--ink-mute);
  font-weight: 600;
  margin-block-start: 3px;
}

/* --- desktop nav --- */
.nav { margin-inline-start: auto; }
.nav__list { display: flex; align-items: center; gap: .25rem; }
.nav__link {
  position: relative;
  display: block;
  padding: .55rem .9rem;
  border-radius: var(--r-sm);
  color: var(--ink-soft);
  font-size: var(--fs-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  inset-block-end: 4px;
  inset-inline: 50%;
  block-size: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: inset-inline var(--t-med) var(--ease-out);
}
.nav__link:hover { color: var(--ink); background: var(--accent-softer); }
.nav__link:hover::after,
.nav__link[aria-current="true"]::after { inset-inline: 22%; }
.nav__link[aria-current="true"] { color: var(--accent-ink); font-weight: 700; }

.header-cta { flex: none; }

/* --- mobile drawer toggle --- */
.nav-toggle {
  display: none;
  inline-size: 48px; block-size: 48px;
  border-radius: var(--r-md);
  border: 1px solid var(--rule);
  background: var(--surface);
  place-items: center;
  margin-inline-start: auto;
  flex: none;
}
.nav-toggle__box { position: relative; inline-size: 20px; block-size: 14px; }
.nav-toggle__box span {
  position: absolute;
  inset-inline: 0;
  block-size: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform var(--t-med) var(--ease-out), opacity var(--t-fast) linear;
}
.nav-toggle__box span:nth-child(1) { inset-block-start: 0; }
.nav-toggle__box span:nth-child(2) { inset-block-start: 6px; }
.nav-toggle__box span:nth-child(3) { inset-block-start: 12px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* --- mobile drawer --- */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--paper);
  padding-block: calc(env(safe-area-inset-top) + 1rem) calc(env(safe-area-inset-bottom) + 2rem);
  overscroll-behavior: contain;
  overflow-y: auto;
}
.drawer[hidden] { display: none; }
.drawer__top { display: flex; align-items: center; justify-content: space-between; }
.drawer__list { display: grid; gap: .25rem; margin-block-start: 2.5rem; }
.drawer__link {
  display: block;
  padding: 1rem .25rem;
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  border-block-end: 1px solid var(--rule);
}
.drawer__link:hover { color: var(--accent-ink); }
.drawer__cta { margin-block-start: 2.25rem; }
body.is-locked { overflow: hidden; }

@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .nav-toggle { display: grid; }
}

/* --------------------------------------------------------------- footer --- */
.site-footer {
  background: var(--ink);
  color: var(--on-dark);
  padding-block: clamp(3rem, 6vw, 4.5rem) 0;
  padding-block-end: env(safe-area-inset-bottom);
}
.footer-grid {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-grid .brand__word b { color: #fff; }
.footer-grid .brand__word i { color: #6fc3c0; }
.footer-grid .brand__sub    { color: rgba(237, 245, 245, .5); }

.footer-blurb {
  color: var(--on-dark-soft);
  font-size: var(--fs-sm);
  max-width: 40ch;
  margin-block-start: 1.25rem;
}

.footer-col h3 {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: #fff;
  margin-block-end: 1.1rem;
}
.footer-col li + li { margin-block-start: .55rem; }
.footer-col a {
  color: var(--on-dark-soft);
  font-size: var(--fs-sm);
  text-decoration: none;
}
.footer-col a:hover { color: #fff; text-decoration: underline; }

.social-row { display: flex; gap: .6rem; margin-block-start: 1.5rem; }
.social-link {
  inline-size: 42px; block-size: 42px;
  display: grid; place-items: center;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .05);
  color: var(--on-dark-soft);
  transition: background var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}
.social-link:hover { background: rgba(255, 255, 255, .12); color: #fff; transform: translateY(-2px); }
.social-link svg { inline-size: 20px; block-size: 20px; }

.footer-base {
  margin-block-start: clamp(2.5rem, 5vw, 3.5rem);
  border-block-start: 1px solid rgba(255, 255, 255, .1);
  padding-block: 1.5rem 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: rgba(237, 245, 245, .55);
}
.footer-base a { color: rgba(237, 245, 245, .7); text-decoration: none; }
.footer-base a:hover { color: #fff; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 1.25rem; }