/* ============================================================
   Peak Grades — Shared Stylesheet
   ============================================================ */

/* ── Tokens ───────────────────────────────────────────────── */
:root {
  --teal:        #00897b;
  --teal-dark:   #00695c;
  --teal-light:  #e0f2f1;
  --teal-mid:    #b2dfdb;
  --navy:        #0d1b2a;
  --navy-mid:    #1a3040;
  --text:        #1a1a2e;
  --text-muted:  #5c6370;
  --text-faint:  #9ca3af;
  --bg:          #ffffff;
  --bg-soft:     #f8f9fa;
  --bg-teal:     #f0faf9;
  --border:      #e5e7eb;
  --border-dark: #d1d5db;
  --gold:        #f59e0b;
  --green:       #16a34a;
  --purple:      #7c3aed;
  --radius:      8px;
  --radius-lg:   14px;
  --radius-xl:   20px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow:      0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:   0 12px 40px rgba(0,0,0,.12);
  --shadow-xl:   0 24px 64px rgba(0,0,0,.15);
  --container:   1200px;
  --header-h:    64px;
  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
  --font-serif:  'Merriweather', Georgia, serif;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { font: inherit; cursor: pointer; background: none; border: none; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 4px; }

/* ── Skip link ────────────────────────────────────────────── */
.skip-link { position: absolute; left: -9999px; top: auto; }
.skip-link:focus {
  left: 1rem; top: 1rem; z-index: 999;
  padding: .6rem 1rem; background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ── Layout ───────────────────────────────────────────────── */
.wrap { width: min(calc(100% - 2.5rem), var(--container)); margin-inline: auto; }
.section { padding: 72px 0; }
.section-alt  { background: var(--bg-soft); }
.section-teal { background: var(--bg-teal); }
.section-navy { background: var(--navy); color: #fff; }

/* ── Top bar ──────────────────────────────────────────────── */
.top-bar {
  background: var(--navy);
  color: rgba(255,255,255,.7);
  font-size: 13px;
  padding: 8px 0;
  line-height: 1.4;
}
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.top-bar a { color: rgba(255,255,255,.65); transition: color .15s; }
.top-bar a:hover { color: #fff; }
.top-bar-left { display: flex; gap: 1.5rem; align-items: center; }
.top-bar-right { display: flex; gap: 1.5rem; align-items: center; }

/* ── Site header ──────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: var(--bg);
  border-bottom: 2px solid var(--teal);
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
  transition: box-shadow .2s;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,.1); }
.header-inner {
  height: 100%;
  display: flex; align-items: center; gap: 1.5rem;
}

/* ── Brand / Logo ─────────────────────────────────────────── */
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; text-decoration: none; }
.brand-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--teal); display: grid; place-items: center;
  color: #fff; flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,137,123,.3);
}
.brand-icon svg { width: 22px; height: 22px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name-main  { font-size: 1.05rem; font-weight: 800; color: var(--text); }
.brand-name-sub   { font-size: 10.5px; font-weight: 600; color: var(--teal); letter-spacing: .05em; text-transform: uppercase; }

/* ── Primary nav ──────────────────────────────────────────── */
.main-nav { display: flex; gap: .15rem; margin-left: auto; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 13px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; color: var(--text-muted);
  transition: background .15s, color .15s; white-space: nowrap;
  user-select: none;
}
.nav-link:hover, .nav-link.active { background: var(--teal-light); color: var(--teal-dark); }
.nav-link svg { width: 13px; height: 13px; transition: transform .2s; }
.nav-item:hover .nav-link svg { transform: rotate(180deg); }

/* Dropdown */
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 0;
  min-width: 230px; background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl); padding: 8px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(-6px);
  transition: opacity .18s, transform .18s, visibility .18s;
  z-index: 200;
}
.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown {
  opacity: 1; visibility: visible;
  pointer-events: auto; transform: none;
}
.dropdown-label {
  font-size: 11px; font-weight: 700; color: var(--text-faint);
  letter-spacing: .06em; text-transform: uppercase;
  padding: 8px 10px 4px;
}
.dropdown a {
  display: block; padding: 7px 10px; border-radius: 6px;
  font-size: 13.5px; color: var(--text-muted);
  transition: background .12s, color .12s;
}
.dropdown a:hover { background: var(--teal-light); color: var(--teal-dark); }
.dropdown-divider { height: 1px; background: var(--border); margin: 6px 0; }
.dropdown-wide { min-width: 480px; display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }

/* Header CTAs */
.header-ctas { display: flex; gap: .6rem; align-items: center; flex-shrink: 0; margin-left: 1rem; }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; justify-content: center;
  align-items: center; gap: 5px;
  padding: 9px; border-radius: var(--radius);
  border: 1px solid var(--border); background: transparent;
}
.hamburger span {
  display: block; width: 18px; height: 2px;
  background: var(--text); border-radius: 2px; transition: .22s;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile nav overlay ───────────────────────────────────── */
.mobile-nav {
  display: none; position: fixed;
  top: var(--header-h); left: 0; right: 0; bottom: 0;
  z-index: 90; background: var(--bg);
  overflow-y: auto; padding: 1.25rem 1.5rem 2rem;
  flex-direction: column; gap: .35rem;
  border-top: 1px solid var(--border);
}
.mobile-nav.open { display: flex; }
.mobile-nav-link {
  display: block; padding: .85rem 1rem; border-radius: var(--radius);
  font-weight: 600; font-size: 1rem; color: var(--text-muted);
  transition: background .12s, color .12s;
}
.mobile-nav-link:hover { background: var(--teal-light); color: var(--teal); }
.mobile-nav-label {
  font-size: 11px; font-weight: 700; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: .06em;
  padding: .75rem 1rem .25rem;
}
.mobile-nav-divider { height: 1px; background: var(--border); margin: .5rem 0; }
.mobile-nav-ctas { display: flex; flex-direction: column; gap: .6rem; margin-top: 1rem; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .45rem; padding: 10px 20px; border-radius: 7px;
  font-size: 14px; font-weight: 700; line-height: 1.3;
  transition: background .15s, color .15s, transform .15s, box-shadow .15s, border-color .15s;
  white-space: nowrap; cursor: pointer; border: 2px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-teal   { background: var(--teal); color: #fff; border-color: var(--teal); box-shadow: 0 2px 8px rgba(0,137,123,.22); }
.btn-teal:hover { background: var(--teal-dark); border-color: var(--teal-dark); box-shadow: 0 4px 14px rgba(0,137,123,.35); }
.btn-outline { background: transparent; color: var(--teal); border-color: var(--teal); }
.btn-outline:hover { background: var(--teal-light); }
.btn-navy   { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn-navy:hover { background: var(--navy-mid); border-color: var(--navy-mid); }
.btn-white  { background: #fff; color: var(--teal-dark); border-color: transparent; box-shadow: var(--shadow); }
.btn-white:hover { background: var(--teal-light); }
.btn-ghost  { background: transparent; color: var(--text-muted); border-color: transparent; }
.btn-ghost:hover { background: var(--bg-soft); color: var(--text); }
.btn-ghost-white { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.25); }
.btn-ghost-white:hover { background: rgba(255,255,255,.2); }

.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 6px; }
.btn-lg { padding: 14px 28px; font-size: 15.5px; border-radius: 8px; }
.btn-block { width: 100%; justify-content: center; }

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 9px; border-radius: 20px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .02em; line-height: 1.5;
}
.badge-free     { background: #dcfce7; color: #15803d; }
.badge-new      { background: #fef3c7; color: #92400e; }
.badge-popular  { background: #ede9fe; color: #6d28d9; }
.badge-gcse     { background: #dbeafe; color: #1d4ed8; }
.badge-alevel   { background: #fce7f3; color: #9d174d; }
.badge-teal     { background: var(--teal-light); color: var(--teal-dark); }

/* ── Eyebrow ──────────────────────────────────────────────── */
.eyebrow {
  display: inline-block; font-size: 12.5px; font-weight: 700;
  color: var(--teal); text-transform: uppercase; letter-spacing: .07em;
  margin-bottom: .5rem;
}

/* ── Section header ───────────────────────────────────────── */
.section-header { margin-bottom: 3rem; }
.section-header.center { text-align: center; }
.section-header.center p { margin-inline: auto; }
.section-header h2 {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(1.5rem, 2.5vw, 2.1rem); line-height: 1.15;
  color: var(--text); margin-bottom: .75rem; margin-top: .4rem;
}
.section-header p { font-size: .9375rem; color: var(--text-muted); max-width: 58ch; }
.section-header-row {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 1.5rem; margin-bottom: 2.5rem; flex-wrap: wrap;
}
.section-header-row .section-header { margin-bottom: 0; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.75rem;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.card:hover { border-color: var(--teal-mid); box-shadow: var(--shadow); transform: translateY(-2px); }
.card-icon {
  width: 50px; height: 50px; border-radius: 12px;
  background: var(--teal-light); display: grid; place-items: center;
  color: var(--teal); margin-bottom: 1.15rem; flex-shrink: 0;
}
.card-icon svg { width: 25px; height: 25px; }
.card-icon.purple { background: #ede9fe; color: var(--purple); }
.card-icon.gold   { background: #fef3c7; color: #d97706; }
.card-icon.navy   { background: #dbeafe; color: #1d4ed8; }
.card-icon.green  { background: #dcfce7; color: var(--green); }
.card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: .5rem; }
.card p  { font-size: .9rem; color: var(--text-muted); line-height: 1.65; }

/* ── Grid layouts ─────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.15rem; }

/* ── Check list ───────────────────────────────────────────── */
.check-list { display: grid; gap: .6rem; }
.check-item {
  display: flex; align-items: flex-start; gap: .65rem;
  font-size: .9rem; color: var(--text-muted);
}
.check-item svg { width: 17px; height: 17px; color: var(--teal); flex-shrink: 0; margin-top: 2px; }
.check-item strong { color: var(--text); }

/* ── Stats bar ────────────────────────────────────────────── */
.stats-bar { background: var(--teal); padding: 22px 0; }
.stats-inner { display: flex; justify-content: space-around; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.stat { text-align: center; }
.stat strong { display: block; font-family: var(--font-serif); font-size: 2.2rem; font-weight: 900; color: #fff; line-height: 1; }
.stat span   { font-size: 13px; color: rgba(255,255,255,.85); }
.stat-div    { width: 1px; height: 36px; background: rgba(255,255,255,.25); flex-shrink: 0; }

/* ── Hero base ────────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, #1a3a4a 55%, #0d4d45 100%);
  color: #fff; padding: 64px 0;
}
.page-hero h1 {
  font-family: var(--font-serif); font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 900; line-height: 1.1; color: #fff; margin-bottom: 1rem;
}
.page-hero h1 em { font-style: normal; color: #4dd0c4; }
.page-hero p { font-size: 1.0625rem; color: rgba(255,255,255,.75); max-width: 52ch; margin-bottom: 1.75rem; }
.page-hero-eyebrow { display: inline-flex; align-items: center; gap: 7px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); border-radius: 20px; padding: 5px 13px; font-size: 13px; font-weight: 600; color: #9ed0c9; margin-bottom: 1.25rem; }
.page-hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; }

/* ── Breadcrumb ───────────────────────────────────────────── */
.breadcrumb { display: flex; align-items: center; gap: .4rem; font-size: 13px; color: rgba(255,255,255,.55); margin-bottom: 1.25rem; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,.65); transition: color .15s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: rgba(255,255,255,.35); }

/* ── Newsletter ───────────────────────────────────────────── */
.newsletter-band { background: var(--navy); padding: 60px 0; }
.newsletter-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.newsletter-copy h2 { font-family: var(--font-serif); font-size: clamp(1.4rem, 2vw, 1.85rem); font-weight: 900; color: #fff; margin-bottom: .6rem; }
.newsletter-copy p { font-size: .9375rem; color: rgba(255,255,255,.65); }
.newsletter-form-row { display: flex; gap: .6rem; }
.newsletter-input {
  flex: 1; min-height: 48px; padding: 0 1rem;
  background: rgba(255,255,255,.08); border: 1.5px solid rgba(255,255,255,.18);
  border-radius: 8px; color: #fff; font: inherit; font-size: 14px;
}
.newsletter-input::placeholder { color: rgba(255,255,255,.4); }
.newsletter-input:focus { outline: none; border-color: #4dd0c4; }
.newsletter-note { margin-top: .65rem; font-size: 12px; color: rgba(255,255,255,.4); }

/* ── Site footer ──────────────────────────────────────────── */
.site-footer { background: var(--navy); }
.footer-main { padding: 60px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr 1fr; gap: 2.5rem; }
.footer-brand-col .brand { margin-bottom: .9rem; }
.footer-brand-col p { font-size: .8125rem; color: rgba(255,255,255,.5); line-height: 1.7; max-width: 24ch; }
.footer-col h4 { font-size: .8125rem; font-weight: 700; color: #fff; margin-bottom: 1rem; letter-spacing: .03em; text-transform: uppercase; }
.footer-links { display: grid; gap: .5rem; }
.footer-links a { font-size: .8125rem; color: rgba(255,255,255,.45); transition: color .15s; }
.footer-links a:hover { color: rgba(255,255,255,.85); }
.footer-social { display: flex; gap: .55rem; margin-top: 1.25rem; }
.social-btn {
  width: 34px; height: 34px; border-radius: 8px;
  background: rgba(255,255,255,.07); display: grid; place-items: center;
  color: rgba(255,255,255,.45); transition: background .15s, color .15s;
}
.social-btn:hover { background: var(--teal); color: #fff; }
.social-btn svg { width: 15px; height: 15px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; }
.footer-bottom-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap; font-size: .8rem; color: rgba(255,255,255,.3);
}
.footer-bottom-links { display: flex; gap: 1.5rem; }
.footer-bottom-links a { color: rgba(255,255,255,.3); transition: color .15s; }
.footer-bottom-links a:hover { color: rgba(255,255,255,.65); }

/* ── Forms ────────────────────────────────────────────────── */
.form-grid { display: grid; gap: 1rem; }
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
label { font-size: 13px; font-weight: 600; color: var(--text); }
.input {
  min-height: 44px; padding: 0 .875rem;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  font: inherit; font-size: 14px; color: var(--text);
  background: var(--bg); width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,137,123,.1); }
select.input { cursor: pointer; }
textarea.input { resize: vertical; min-height: 110px; padding-top: .65rem; line-height: 1.6; }

/* ── FAQ ──────────────────────────────────────────────────── */
.faq-list { display: grid; gap: .75rem; }
details {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: border-color .2s;
}
details[open] { border-color: var(--teal-mid); }
summary {
  cursor: pointer; list-style: none; padding: 1.1rem 1.25rem;
  font-weight: 600; font-size: .9375rem; display: flex;
  justify-content: space-between; align-items: center; gap: .75rem;
  user-select: none;
}
summary::-webkit-details-marker { display: none; }
.faq-chevron {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--bg-soft); display: grid; place-items: center;
  flex-shrink: 0; font-size: .65rem; color: var(--text-muted);
  transition: transform .2s, background .2s;
}
details[open] .faq-chevron { transform: rotate(180deg); background: var(--teal-light); color: var(--teal); }
.faq-body { padding: 0 1.25rem 1.1rem; font-size: .9rem; color: var(--text-muted); line-height: 1.7; }

/* ── Reviews ──────────────────────────────────────────────── */
.review-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.75rem; }
.stars { display: flex; gap: 3px; margin-bottom: 1rem; }
.stars svg { width: 15px; height: 15px; fill: var(--gold); color: var(--gold); }
.review-card blockquote { font-size: .9rem; color: var(--text); line-height: 1.7; margin-bottom: 1.15rem; font-style: italic; }
.reviewer { display: flex; align-items: center; gap: .75rem; }
.reviewer-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--teal-light); display: grid; place-items: center;
  font-weight: 700; font-size: .8rem; color: var(--teal); flex-shrink: 0;
}
.reviewer-name { font-size: .875rem; font-weight: 700; display: block; }
.reviewer-meta { font-size: .75rem; color: var(--text-muted); }

/* ── Pricing ──────────────────────────────────────────────── */
.price-card {
  background: var(--bg); border: 2px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem;
  display: flex; flex-direction: column;
}
.price-card.featured { border-color: var(--teal); position: relative; }
.featured-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--teal); color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 20px; white-space: nowrap;
}
.price-label { font-size: 12.5px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: .4rem; }
.price-amount { font-family: var(--font-serif); font-size: 2.4rem; font-weight: 900; color: var(--teal); line-height: 1; margin-bottom: .3rem; }
.price-amount sup { font-size: 1.2rem; vertical-align: top; margin-top: .4rem; font-family: var(--font-sans); }
.price-amount sub { font-size: .875rem; font-family: var(--font-sans); color: var(--text-muted); font-weight: 400; }
.price-desc { font-size: .875rem; color: var(--text-muted); margin-bottom: 1.5rem; }
.price-features { display: grid; gap: .55rem; flex: 1; margin-bottom: 1.5rem; }
.price-feature { display: flex; align-items: center; gap: .55rem; font-size: .875rem; }
.price-feature svg { width: 15px; height: 15px; color: var(--teal); flex-shrink: 0; }

/* ── Scroll reveal ────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
.r2 { transition-delay: .1s; }
.r3 { transition-delay: .2s; }
.r4 { transition-delay: .3s; }
.r5 { transition-delay: .4s; }

/* ── Utility ──────────────────────────────────────────────── */
.text-teal   { color: var(--teal); }
.text-muted  { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-1 { margin-top: .5rem; }  .mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.gap-sm { gap: .6rem; } .gap-md { gap: 1rem; } .gap-lg { gap: 1.5rem; }
.flex { display: flex; align-items: center; } .flex-wrap { flex-wrap: wrap; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1080px) {
  .main-nav { display: none; }
  .header-ctas .btn-outline { display: none; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .newsletter-inner { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stat-div { display: none; }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .newsletter-form-row { flex-direction: column; }
  .page-hero { padding: 48px 0; }
  .section { padding: 52px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-ctas .btn-teal { display: none; }
  .footer-brand-col p { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ── Subject tabs (resources page) ───────────────────────── */
.subj-tabs { display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid var(--border); }
.subj-tab { padding:7px 18px;border-radius:6px;font-size:13.5px;font-weight:700;border:2px solid var(--border);color:var(--text-muted);cursor:pointer;transition:border-color .15s,color .15s,background .15s;background:var(--bg);white-space:nowrap; }
.subj-tab:hover { border-color:var(--teal-mid);color:var(--teal); }
.subj-tab.active { border-color:var(--teal);color:var(--teal);background:var(--teal-light); }

/* ── 2-column wide dropdown ───────────────────────────────── */
.dropdown-wide { min-width:380px; }
.dropdown-cols { display:grid;grid-template-columns:1fr 1fr; }
.dropdown-cols > div { display:flex;flex-direction:column; }
.dropdown-cols > div:first-child { border-right:1px solid var(--border); }

/* ── Subject icon colour tokens ───────────────────────────── */
.subj-bio   { background:#fce7f3;color:#db2777; }
.subj-chem  { background:#d1fae5;color:#059669; }
.subj-phys  { background:#ffedd5;color:#ea580c; }
.subj-maths { background:var(--teal-light);color:var(--teal); }
.subj-eng   { background:#fef3c7;color:#b45309; }
.subj-geo   { background:#fef9c3;color:#854d0e; }
.subj-fm    { background:#cffafe;color:#0e7490; }
.subj-cs    { background:#ede9fe;color:#7c3aed; }

.t-icon.bio  { background:#fce7f3;color:#db2777; }
.t-icon.chem { background:#d1fae5;color:#059669; }
.t-icon.phys { background:#ffedd5;color:#ea580c; }
.t-icon.eng  { background:#fef3c7;color:#b45309; }
.t-icon.geo  { background:#fef9c3;color:#854d0e; }
.t-icon.fm   { background:#cffafe;color:#0e7490; }
.t-icon.cs   { background:#ede9fe;color:#7c3aed; }

/* ── Subject course cards (courses page) ──────────────────── */
.subj-course-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem; }
.subj-course-card { background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s; }
.subj-course-card:hover { box-shadow:var(--shadow);transform:translateY(-2px); }
.subj-icon { width:48px;height:48px;border-radius:12px;display:grid;place-items:center;margin-bottom:1rem; }
.subj-icon svg { width:24px;height:24px; }
.subj-course-card h3 { font-size:1.05rem;font-weight:800;margin-bottom:.25rem; }
.subj-level-tag { font-size:11.5px;font-weight:700;padding:2px 9px;border-radius:10px;display:inline-block;margin-bottom:.85rem; }
.subj-course-types { list-style:none;display:grid;gap:.35rem;margin:0 0 1.1rem;flex:1; }
.subj-course-types li { display:flex;align-items:center;gap:.5rem;font-size:.8125rem;color:var(--text-muted); }
.subj-course-types li::before { content:'';width:6px;height:6px;border-radius:50%;background:var(--teal);flex-shrink:0; }
.subj-from { font-size:.875rem;font-weight:700;color:var(--teal);margin-bottom:.85rem; }

@media(max-width:860px){ .subj-course-grid{grid-template-columns:1fr 1fr;} }
@media(max-width:560px){ .subj-course-grid{grid-template-columns:1fr;} }