/* Applied EdTech — homepage styles
   Palette: Bright Berry (see CLAUDE_1.md brand guide) */

:root {
  --magenta: #E01A6F;
  --violet: #3B2D6B;
  --violet-light: #4d3d84;
  --charcoal: #1F1F2E;
  --tangerine: #FF7A33;
  --lime: #A9CC3E;
  --cream: #FBF9F5;
  --ink: #1F1F2E;
  --white: #FFFFFF;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.jk-link {
  transition: color 0.2s ease;
}

.jk-link:hover {
  color: var(--lime);
}

section { scroll-margin-top: 84px; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--violet);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.logo-link {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
}

.logo-link img {
  height: 46px;
  width: auto;
}

.logo-rule {
  height: 3px;
  width: 100%;
  background: var(--lime);
  border-radius: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-link {
  position: relative;
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  line-height: 1.2;
  padding: 4px 2px;
}

.nav-link .letters-row {
  display: flex;
}

.nav-link .letters-row-under {
  position: absolute;
  inset: 0;
  color: var(--lime);
}

.nav-link .letter {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link .letters-row-over .letter {
  transform: translateY(0);
}

.nav-link .letters-row-under .letter {
  transform: translateY(110%);
}

.nav-link:hover .letters-row-over .letter {
  transform: translateY(-110%);
}

.nav-link:hover .letters-row-under .letter {
  transform: translateY(0);
}

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  padding: 11px 22px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.12s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-magenta { background: var(--magenta); color: var(--white); }
.btn-tangerine { background: var(--tangerine); color: var(--charcoal); }
.btn-outline-light { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.55); }
.btn-outline-light:hover { border-color: var(--white); }
.btn-violet { background: var(--violet); color: var(--white); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.6rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero {
  background: var(--violet);
  color: var(--white);
}

.hero-animation-band {
  width: 100%;
  background: var(--charcoal);
  padding: 56px 0 40px;
}

.hero .wrap {
  max-width: 1400px;
}

.hero-centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero .eyebrow { color: var(--lime); }

.hero h1 {
  font-size: 3rem;
  margin: 8px 0 20px;
}

.hero p.lede {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.82);
  max-width: 46ch;
  margin: 0 0 32px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.hero-bottom {
  padding: 40px 0 88px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  text-align: left;
}

.hero-bottom-image {
  aspect-ratio: 3 / 2;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.18);
}

.hero-bottom-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-logo-panel {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 20px;
  margin: 20px 0 32px;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.split-stage {
  --applied-h: clamp(55px, 17vw, 300px);
  position: relative;
  width: 100%;
  max-width: 1300px;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.split-row {
  display: flex;
  align-items: flex-end;
}

.split-word {
  display: block;
  width: auto;
  flex-shrink: 0;
}

.split-applied {
  height: var(--applied-h);
}

.split-edtech {
  height: calc(var(--applied-h) * 0.33);
}

.reveal-tools {
  flex-shrink: 0;
  width: clamp(14px, 4vw, 22px);
  height: calc(var(--applied-h) * 0.33);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--applied-h) * 0.04);
  animation: reveal-gap-grow 2.4s cubic-bezier(0.4, 0, 0.2, 1) 1.4s forwards;
}

.reveal-icon {
  flex-shrink: 0;
  width: calc(var(--applied-h) * 0.28);
  height: calc(var(--applied-h) * 0.28);
  object-fit: contain;
  opacity: 0;
  transform: translateY(14px) scale(0.6);
  animation: reveal-icon-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.reveal-icon:nth-child(1) { animation-delay: 3.4s; }
.reveal-icon:nth-child(2) { animation-delay: 3.9s; }
.reveal-icon:nth-child(3) { animation-delay: 4.4s; }

@keyframes reveal-gap-grow {
  to { width: calc(var(--applied-h) * 1.04); }
}

@keyframes reveal-icon-in {
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-tools, .reveal-icon {
    animation: none;
  }
  .reveal-tools { width: calc(var(--applied-h) * 1.04); }
  .reveal-icon { opacity: 1; transform: none; }
}

/* ---------- Promise pillars ---------- */

.pillars {
  background: var(--charcoal);
  padding: 56px 0;
}

.pillars .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.pillar h3 {
  font-size: 1.15rem;
  color: var(--lime);
  margin-bottom: 8px;
}

.pillar p {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.75);
}

/* ---------- Tools section ---------- */

.tools {
  background: var(--white);
  padding: 96px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head .eyebrow { color: var(--magenta); }

.section-head h2 {
  font-size: 2.2rem;
  color: var(--violet);
  margin: 14px 0 16px;
}

.section-head p {
  font-size: 1.05rem;
  color: rgba(31,31,46,0.72);
}

.tool-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tool-card {
  border: 1px solid rgba(31,31,46,0.1);
  border-radius: 14px;
  padding: 28px 24px;
  background: var(--cream);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tool-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-icon {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.tool-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--violet);
}

.tool-card .best-for {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tangerine);
}

.tool-card p.desc {
  font-size: 0.95rem;
  color: rgba(31,31,46,0.78);
}

.tools-note {
  margin-top: 32px;
  font-size: 0.92rem;
  color: rgba(31,31,46,0.6);
  font-style: italic;
}

/* ---------- About / credibility ---------- */

.about {
  background: var(--cream);
  padding: 96px 0;
  border-top: 1px solid rgba(31,31,46,0.08);
}

.about .wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about .eyebrow { color: var(--magenta); }

.about h2 {
  font-size: 2rem;
  color: var(--violet);
  margin: 14px 0 18px;
}

.about p {
  font-size: 1rem;
  color: rgba(31,31,46,0.78);
  margin-bottom: 14px;
}

.credential-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--violet);
  background: rgba(59,45,107,0.08);
  border: 1px solid rgba(59,45,107,0.25);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.about-image {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border: 1px solid rgba(31,31,46,0.1);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.stats {
  display: flex;
  gap: 32px;
  margin-top: 28px;
}

.stat .num {
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--magenta);
  line-height: 1;
}

.stat .label {
  font-size: 0.82rem;
  color: rgba(31,31,46,0.65);
  margin-top: 4px;
}

/* ---------- Contact / newsletter ---------- */

.contact {
  background: var(--violet);
  color: var(--white);
  padding: 88px 0;
}

.contact .wrap {
  max-width: 680px;
  text-align: center;
  margin: 0 auto;
}

.contact .eyebrow { color: var(--lime); }

.contact h2 {
  font-size: 2rem;
  margin: 14px 0 16px;
}

.contact p.lede {
  color: rgba(255,255,255,0.82);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.newsletter-note {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.18);
  font-size: 0.92rem;
  color: rgba(255,255,255,0.72);
}

.newsletter-note strong {
  color: var(--lime);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 32px;
}

.site-footer .wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.site-footer img {
  height: 40px;
  margin-bottom: 8px;
}

.site-footer .tagline {
  font-size: 0.92rem;
  max-width: 42ch;
}

.footer-meta {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
}

.footer-meta span { margin: 0 8px; }

.social-links {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  vertical-align: middle;
}

.social-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  line-height: 0;
}

.social-links img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  transition: transform 0.12s ease;
}

.social-links a:hover img {
  transform: translateY(-1px);
}

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  .pillars .wrap { grid-template-columns: repeat(2, 1fr); }
  .tool-cards { grid-template-columns: 1fr; }
  .about .wrap { grid-template-columns: 1fr; }
  .hero-bottom { grid-template-columns: 1fr; }
  .stats { flex-wrap: wrap; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--violet);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    display: none;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .main-nav.open { display: flex; }

  .main-nav a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .main-nav .btn { margin-top: 12px; }

  .nav-toggle { display: block; }

  .hero h1 { font-size: 2.2rem; }
}

@media (max-width: 560px) {
  .pillars .wrap { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { text-align: center; }
}