/* K12Buddy 2026 design system — shared by support pages (faq, contact, help-center).
   Palette: paper #f6f8fb · ink #0c1b33 · cobalt #2140cf · marker #ffd84d · pine #0e8a5f
   Type: Bricolage Grotesque (display) · DM Sans (body) · Spline Sans Mono (labels) */

:root {
  --ink: #0c1b33;
  --ink-soft: #22314d;
  --ink-muted: #54637d;
  --paper: #f6f8fb;
  --paper-deep: #edf1f7;
  --cobalt: #2140cf;
  --cobalt-deep: #182f9b;
  --cobalt-tint: #e8edfc;
  --mark: #ffd84d;
  --pine: #0e8a5f;
  --pine-tint: #e3f4ed;
  --hairline: rgba(12, 27, 51, .10);
  --shadow-card: 0 1px 2px rgba(12,27,51,.05), 0 14px 34px -18px rgba(12,27,51,.18);
}

*, *::before, *::after { box-sizing: border-box; }
* { -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img { max-width: 100%; }

h1, h2, h3 { font-family: 'Bricolage Grotesque', system-ui, sans-serif; line-height: 1.12; letter-spacing: -.01em; margin: 0; }
h1 { font-size: clamp(2.1rem, 5vw, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0; }

a { color: var(--cobalt); }
a:focus-visible, button:focus-visible, summary:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--cobalt); outline-offset: 3px; border-radius: 6px;
}

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }
.wrap-narrow { max-width: 46rem; margin: 0 auto; padding: 0 1.25rem; }

/* Signature highlighter swipe */
.hl {
  background: linear-gradient(100deg,
    rgba(255,216,77,0) .8%, rgba(255,216,77,.9) 3%,
    rgba(255,216,77,.55) 55%, rgba(255,216,77,.9) 96%,
    rgba(255,216,77,0) 98.5%);
  border-radius: .3em .5em .35em .45em;
  padding: .04em .22em; margin: 0 -.1em;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}

/* Mono eyebrow with marker tick */
.eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: 'Spline Sans Mono', ui-monospace, monospace;
  font-weight: 600; font-size: .75rem;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--cobalt-deep);
}
.eyebrow::before { content: ""; width: 1.4rem; height: .5rem; background: var(--mark); border-radius: 2px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(246,248,251,.85);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--hairline);
}
.site-header .bar {
  max-width: 72rem; margin: 0 auto; padding: 0 1.25rem;
  height: 4rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--ink); }
.brand-k {
  display: grid; place-items: center; width: 2.25rem; height: 2.25rem;
  border-radius: .75rem; background: var(--cobalt); color: #fff;
  font-family: 'Bricolage Grotesque', sans-serif; font-weight: 700; font-size: 1.1rem;
}
.brand-name { font-family: 'Bricolage Grotesque', sans-serif; font-weight: 700; font-size: 1.25rem; letter-spacing: -.01em; }
.site-nav { display: flex; align-items: center; gap: 1.6rem; }
.site-nav a { color: var(--ink-soft); text-decoration: none; font-weight: 500; font-size: .95rem; position: relative; }
.site-nav a::after { content: ""; position: absolute; left: 0; bottom: -4px; height: 2px; width: 0; background: var(--mark); transition: width .22s ease; }
.site-nav a:hover::after { width: 100%; }
.site-nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }
@media (max-width: 700px) { .site-nav { gap: 1rem; } .site-nav .hide-sm { display: none; } }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border-radius: 999px; padding: .8rem 1.6rem;
  font: 700 1rem 'DM Sans', system-ui, sans-serif;
  text-decoration: none; cursor: pointer; border: 0;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.btn-sm { padding: .55rem 1.15rem; font-size: .9rem; }
.btn-primary {
  background: var(--cobalt); color: #fff;
  box-shadow: 0 10px 24px -10px rgba(33,64,207,.55), inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover { background: var(--cobalt-deep); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid rgba(12,27,51,.14); }
.btn-ghost:hover { border-color: rgba(12,27,51,.4); transform: translateY(-1px); }

/* ===== Page hero (support pages) ===== */
.page-hero { position: relative; overflow: hidden; padding: 4rem 0 3rem; text-align: center; }
.page-hero .gridpaper {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(12,27,51,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12,27,51,.055) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 35%, transparent 92%);
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 35%, transparent 92%);
}
.page-hero > .inner { position: relative; z-index: 1; }
.page-hero .lede { color: var(--ink-muted); font-size: 1.15rem; max-width: 38rem; margin: 1rem auto 0; }

/* ===== Cards & sections ===== */
.section { padding: 3rem 0; }
.card {
  background: #fff; border: 1px solid var(--hairline);
  border-radius: 1.5rem; box-shadow: var(--shadow-card); padding: 1.75rem;
}
.card-grid { display: grid; gap: 1.25rem; }
@media (min-width: 760px) { .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } .card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); } }
.icon-chip {
  display: grid; place-items: center; width: 3rem; height: 3rem;
  border-radius: 1rem; font-size: 1.15rem; margin-bottom: .9rem;
}
.icon-chip.cobalt { background: var(--cobalt-tint); color: var(--cobalt); }
.icon-chip.pine { background: var(--pine-tint); color: var(--pine); }
.icon-chip.mark { background: rgba(255,216,77,.3); color: var(--ink); }
.card p.muted, .muted { color: var(--ink-muted); }
.card .card-link { display: inline-flex; align-items: center; gap: .4rem; margin-top: 1rem; font-weight: 600; font-size: .95rem; text-decoration: none; }
.card .card-link:hover { text-decoration: underline; }

/* FAQ accordion */
.faq-list { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.faq-list details { border-bottom: 1px solid var(--hairline); padding: 1.15rem 0; }
.faq-list details:last-child { border-bottom: 0; }
.faq-list summary {
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  font-family: 'Bricolage Grotesque', sans-serif; font-weight: 700; font-size: 1.15rem;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: rgba(12,27,51,.4); font-size: 1.3rem; transition: transform .2s ease; flex-shrink: 0; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { color: var(--ink-soft); margin-top: .7rem; }

/* Forms */
.field label { display: block; font-weight: 600; font-size: .9rem; color: var(--ink-soft); margin-bottom: .35rem; }
.field input, .field select, .field textarea {
  width: 100%; padding: .8rem 1rem; border-radius: .8rem;
  border: 1px solid var(--hairline); background: var(--paper);
  font: 400 1rem 'DM Sans', system-ui, sans-serif; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid rgba(33,64,207,.5); outline-offset: 0; border-color: transparent;
}
.field { margin-bottom: 1.1rem; }

/* Ink panel (dark CTA) */
.ink-panel {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(165deg, #13264a 0%, #0a1730 100%);
  border-radius: 1.75rem; padding: 3rem 1.75rem; text-align: center;
}
.ink-panel h2 { color: #fff; }
.ink-panel p { color: rgba(255,255,255,.72); }
.ink-panel .eyebrow { color: var(--mark); }
.ink-panel .eyebrow::before { background: var(--mark); }

/* ===== Footer ===== */
.site-footer { background: var(--ink); color: rgba(255,255,255,.8); margin-top: 4rem; }
.site-footer .cols {
  max-width: 72rem; margin: 0 auto; padding: 3.5rem 1.25rem;
  display: grid; gap: 2.25rem;
}
@media (min-width: 760px) { .site-footer .cols { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.site-footer .brand-name { color: #fff; }
.site-footer .about { color: rgba(255,255,255,.6); max-width: 20rem; margin-top: 1rem; }
.site-footer .entity { color: rgba(255,255,255,.4); font-size: .875rem; margin-top: 1rem; }
.site-footer h4 { color: #fff; font: 700 1rem 'DM Sans', sans-serif; margin: 0 0 1rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .65rem; font-size: .9rem; }
.site-footer ul a { color: rgba(255,255,255,.8); text-decoration: none; }
.site-footer ul a:hover { color: var(--mark); }
.site-footer .legalbar { border-top: 1px solid rgba(255,255,255,.1); }
.site-footer .legalbar .inner {
  max-width: 72rem; margin: 0 auto; padding: 1.5rem 1.25rem;
  display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; justify-content: space-between;
  font-size: .875rem; color: rgba(255,255,255,.5);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}