/* PrepElephant design system — aligned with the PassMBBS family:
   warm cream page, mint hero band, navy Playpen Sans headings, green pill CTAs, amber accents. */

:root {
  --bg: #faf8f2;
  --band-mint: #e9f1e6;
  --band-cream: #fdf5e6;
  --card: #fdf5e6;
  --card-alt: #ffffff;
  --line: #eadfc0;
  --line-soft: #f0e8d4;
  --ink: #002266;
  --heading: #1e2a78;
  --green: #2e7d32;
  --green-deep: #225c26;
  --green-soft: #e2efe0;
  --amber: #e9a825;
  --amber-deep: #c78c12;
  --muted: #6e6a5e;
  --white: #ffffff;
  --footer: #16321f;
  --radius: 20px;
  --radius-sm: 14px;
  --shadow: 0 2px 4px rgba(30, 42, 120, 0.05), 0 12px 32px -16px rgba(30, 42, 120, 0.18);
  --font-display: 'Playpen Sans', Inter, 'Segoe UI', sans-serif;
  --font-body: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --wrap: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-display); color: var(--heading); line-height: 1.22; font-weight: 700; }
h1 { font-size: clamp(1.85rem, 4.2vw, 2.6rem); margin: 0.4em 0 0.5em; }
h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); margin: 1.9em 0 0.6em; }
h3 { font-size: 1.08rem; margin: 0 0 0.35em; font-family: var(--font-body); font-weight: 700; color: var(--heading); }
p { margin: 0.7em 0; }
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-deep); text-decoration: underline; text-underline-offset: 3px; }
ul, ol { padding-left: 1.3em; }
li { margin: 0.25em 0; }
img { max-width: 100%; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.tinted { background: var(--band-mint); padding: 10px 0 40px; margin-top: 40px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.hidden { display: none !important; }
.skip-link { position: absolute; left: -9999px; background: var(--green); color: #fff; padding: 8px 14px; z-index: 100; border-radius: 999px; }
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Header ---------- */
.site-header {
  background: rgba(250, 248, 242, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--line-soft);
}
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand .pe-logo { display: block; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.main-nav a { color: var(--ink); font-weight: 500; font-size: 0.97rem; }
.main-nav a:hover { color: var(--green); text-decoration: none; }
.main-nav .nav-cta {
  background: var(--green); color: #fff; padding: 10px 20px; border-radius: 999px; font-weight: 600;
}
.main-nav .nav-cta:hover { background: var(--green-deep); color: #fff; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; margin-left: auto; }
.nav-toggle span { display: block; width: 22px; height: 2.5px; border-radius: 2px; background: var(--ink); margin: 5px 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 999px; font-weight: 600;
  text-decoration: none; font-size: 0.99rem; border: 2px solid transparent; cursor: pointer; line-height: 1.3;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 6px 18px -8px rgba(46, 125, 50, 0.7); }
.btn-primary:hover { background: var(--green-deep); color: #fff; }
.btn-secondary { background: var(--band-cream); border-color: var(--line); color: var(--ink); }
.btn-secondary:hover { border-color: var(--amber); color: var(--heading); }
.btn-amber { background: var(--amber); color: #231a02; box-shadow: 0 6px 18px -8px rgba(233, 168, 37, 0.8); }
.btn-amber:hover { background: var(--amber-deep); color: #fff; }
.btn-ghost { border-color: var(--green); color: var(--green); background: transparent; }
.btn-ghost:hover { background: var(--green-soft); color: var(--green-deep); }

/* ---------- Hero ---------- */
.hero { padding: 40px 0 8px; }
.hero-panel {
  background: var(--band-mint);
  border-radius: 28px;
  padding: 52px 48px;
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 36px; align-items: center;
}
.eyebrow {
  font-family: var(--font-body); text-transform: uppercase; letter-spacing: 0.14em;
  font-size: 0.74rem; font-weight: 700; color: var(--green); margin: 0 0 14px;
}
.hero h1 { margin: 0 0 0.4em; }
.hero h1 em { font-style: italic; color: var(--green); }
.hero-sub { font-size: 1.14rem; color: var(--ink); max-width: 540px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; align-items: center; }
.hero-note { color: var(--muted); font-size: 0.9rem; margin-top: 16px; }
.hero-mascot { text-align: center; }
.hero-mascot img { max-height: 240px; width: auto; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(225px, 1fr)); gap: 16px; margin: 22px 0; }
.path-card {
  background: var(--card); border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 18px 18px 14px; text-decoration: none; box-shadow: var(--shadow);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.path-card:hover { border-color: var(--green); transform: translateY(-3px); text-decoration: none; }
.path-card h3 { color: var(--heading); }
.path-card p { color: var(--muted); font-size: 0.9rem; margin: 0; }
.path-card.flagship { border-top: 4px solid var(--green); }
.mini-card {
  background: var(--card); border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 18px; text-decoration: none; text-align: center; box-shadow: var(--shadow);
}
.mini-card h3 { font-size: 0.99rem; }
.mini-card:hover { border-color: var(--amber); text-decoration: none; }

.section-intro { color: var(--muted); max-width: 760px; }
.section-more { margin: 10px 0 30px; }

/* ---------- Feature grid + pillars ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr)); gap: 12px; margin: 20px 0; }
.feature-item { background: var(--card-alt); border: 1.5px solid var(--line); border-radius: var(--radius-sm); padding: 14px; text-align: center; }
.feature-item h3 { margin: 0; }
.feature-links { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0; }
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); gap: 16px; margin: 20px 0; }
.pillar { background: var(--card-alt); border: 1.5px solid var(--line); border-radius: var(--radius); padding: 20px; border-top: 4px solid var(--green); }

/* ---------- Pathway map ---------- */
.pathway-map { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 24px 0 10px; }
.pathway-step { background: var(--white); border: 1.5px solid var(--line); color: var(--heading); border-radius: 999px; padding: 9px 18px; font-size: 0.93rem; font-weight: 600; }
.pathway-arrow { color: var(--green); font-size: 1.25rem; }
.pathway-side { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.pathway-side span { background: var(--band-cream); color: var(--muted); border: 1.5px dashed var(--line); border-radius: 999px; padding: 5px 14px; font-size: 0.86rem; }

/* ---------- Catalogue ---------- */
.catalog-search { margin: 20px 0 34px; }
.catalog-search-input {
  width: 100%; max-width: 640px; font-size: 1.02rem; padding: 14px 20px;
  border: 2px solid var(--line); border-radius: 999px; background: var(--white);
  font-family: inherit; color: var(--ink); box-shadow: var(--shadow);
}
.catalog-search-input:focus { outline: none; border-color: var(--green); }
.catalog-vertical { margin-bottom: 34px; }
.catalog-vertical-tagline { color: var(--muted); margin-top: -8px; }
.catalog-subhead { font-family: var(--font-body); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.76rem; color: var(--green); font-weight: 700; margin-bottom: 6px; }
.catalog-list { list-style: none; padding: 0; margin: 8px 0; columns: 2; column-gap: 40px; }
.catalog-list li { break-inside: avoid; padding: 8px 0; border-bottom: 1px solid var(--line-soft); }
.catalog-courses li a { font-weight: 600; }
.catalog-desc { display: block; color: var(--muted); font-size: 0.88rem; }

/* ---------- Answer block ---------- */
.answer-block {
  background: var(--white); border: 1.5px solid var(--line); border-left: 6px solid var(--green);
  border-radius: var(--radius-sm); padding: 20px 24px; margin: 18px 0 26px; box-shadow: var(--shadow);
}
.answer-label { font-family: var(--font-body); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.72rem; color: var(--green); font-weight: 800; margin: 0 0 6px; }
.answer-note { color: var(--muted); font-size: 0.95rem; }

/* ---------- Content sections ---------- */
.content-section { max-width: 780px; }
.content-section h2 { scroll-margin-top: 96px; }
.content-section ul li { margin: 0.3em 0; }
.content-section.what-you-must-remember { background: var(--card); border: 1.5px solid var(--line); border-radius: var(--radius-sm); padding: 6px 24px 12px; }
.common-confusion { background: #fdf3df; border: 1.5px solid var(--amber); border-radius: var(--radius-sm); padding: 6px 24px 12px; }

/* ---------- Byline ---------- */
.byline-bar { background: var(--band-cream); border: 1px solid var(--line); border-radius: 999px; padding: 10px 20px; margin: 14px 0; max-width: 780px; }
.byline-bar p { margin: 0; font-size: 0.85rem; color: var(--muted); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 18px 0 0; font-size: 0.84rem; color: var(--muted); }
.breadcrumbs li + li::before { content: "›"; margin-right: 6px; color: var(--green); }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--green); }

/* ---------- FAQ ---------- */
.faq-section { max-width: 780px; margin-top: 40px; }
.faq-list { display: grid; gap: 10px; }
.faq-item { background: var(--white); border: 1.5px solid var(--line); border-radius: var(--radius-sm); padding: 4px 18px; }
.faq-item summary { cursor: pointer; font-weight: 600; padding: 12px 0; color: var(--heading); }
.faq-item summary::marker { color: var(--green); }
.faq-item[open] summary { border-bottom: 1px solid var(--line-soft); }
.faq-answer { padding: 10px 0 14px; color: var(--ink); }

/* ---------- App CTA ---------- */
.app-cta { background: var(--band-mint); padding: 40px 0; margin-top: 52px; border-block: 1px solid var(--line-soft); }
.app-cta-inner { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 22px; }
.app-cta h2 { color: var(--heading); margin: 0 0 6px; }
.app-cta p { color: var(--ink); margin: 0; max-width: 520px; }
.app-cta-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.store-btn { display: inline-flex; flex-direction: column; background: var(--white); color: var(--heading); border: 1.5px solid var(--line); border-radius: 999px; padding: 10px 22px; text-decoration: none; line-height: 1.2; box-shadow: var(--shadow); }
.store-btn:hover { border-color: var(--green); color: var(--green-deep); text-decoration: none; }
.store-btn-small { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.store-btn-big { font-weight: 700; font-size: 1.02rem; }
.app-cta-inline { display: flex; gap: 16px; align-items: center; background: var(--band-cream); border: 1.5px solid var(--line); border-radius: var(--radius-sm); padding: 16px 20px; margin: 22px 0; max-width: 780px; }
.app-cta-inline .pe-logo { flex-shrink: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--footer); color: #e7efe4; margin-top: 0; padding: 48px 0 28px; font-size: 0.92rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-logo { display: inline-flex; background: var(--bg); border-radius: 18px; padding: 10px; }
.footer-note { color: #b9cbb7; max-width: 300px; font-size: 0.88rem; margin-top: 14px; }
.site-footer h3 { color: #fff; font-family: var(--font-body); text-transform: uppercase; letter-spacing: 0.09em; font-size: 0.76rem; margin-bottom: 12px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 7px 0; }
.site-footer a { color: #d9e5d5; }
.site-footer a:hover { color: var(--amber); text-decoration: none; }
.footer-legal { border-top: 1px solid rgba(255,255,255,0.14); margin-top: 36px; padding-top: 18px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 0.8rem; color: #a9bda6; }
.footer-legal p { margin: 0; }

/* ---------- Misc ---------- */
.parents-teaser { max-width: 760px; }
.notfound { text-align: center; padding: 70px 20px 90px; }
.notfound h1 { margin-top: 18px; }

@media (max-width: 860px) {
  .hero-panel { grid-template-columns: 1fr; padding: 36px 26px; }
  .hero-mascot img { max-height: 170px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .catalog-list { columns: 1; }
}
@media (max-width: 680px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: var(--bg); flex-direction: column; align-items: flex-start; padding: 18px 24px 22px; gap: 15px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .content-section, .faq-section, .byline-bar { max-width: 100%; }
}