@import url("tokens.css");

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--is-shell);
  color: var(--is-body);
  font-family: var(--is-font-ui);
  font-size: var(--is-text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--is-blue); text-decoration: none; }
a:hover { color: var(--is-blue-ink); }

.skip-link {
  position: absolute;
  top: -48px;
  left: 12px;
  z-index: 100;
  background: var(--is-ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: top .15s ease;
}
.skip-link:focus { top: 12px; color: #fff; }

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

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--is-font-eyebrow);
  font-size: var(--is-text-eyebrow);
  font-weight: 800;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--is-faint);
}

h1, h2, h3 {
  font-family: var(--is-font-display);
  color: var(--is-ink);
  margin: 0;
  text-wrap: pretty;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--is-hit-target);
  padding: 14px 26px;
  border-radius: var(--is-radius-pill);
  font-family: var(--is-font-ui);
  font-size: var(--is-text-label);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background .15s ease, transform .1s ease, border-color .15s ease;
}
.btn:active { transform: scale(.98); }

.btn-primary { background: var(--is-orange); color: #fff; }
.btn-primary:hover { background: var(--is-orange-press); }

.btn-secondary { background: #fff; color: var(--is-blue-ink); border: 1.5px solid var(--is-blue); }
.btn-secondary:hover { background: var(--is-blue-tint); }

.btn-tertiary { background: transparent; color: var(--is-muted); }
.btn-tertiary:hover { background: var(--is-shell); }

.btn-play {
  background: var(--is-ink);
  color: #fff;
  padding: 12px 24px;
}
.btn-play:hover { background: #0a1830; }
.btn-play .play-icon { width: 20px; height: 20px; flex: none; }
.btn-play .play-text { text-align: left; line-height: 1.2; }
.btn-play .play-text small { display: block; font-size: 11px; font-weight: 400; color: #C7CEDA; }
.btn-play .play-text strong { display: block; font-size: 15.5px; font-weight: 600; }

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 241, 236, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--is-hairline);
}
.site-nav > .wrap { position: relative; }
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--is-font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--is-ink);
}
.brand img { width: 34px; height: 34px; border-radius: 9px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-weight: 500;
  color: var(--is-body);
  font-size: 15px;
}
.nav-links a:hover { color: var(--is-orange-ink); }
.nav-cta { display: none; }
@media (min-width: 720px) { .nav-cta { display: inline-flex; } }

.nav-toggle { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--is-ink); }
@media (max-width: 719px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px 24px;
    border-bottom: 1px solid var(--is-hairline);
    gap: 16px;
    box-shadow: var(--is-shadow-card);
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 80px;
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
@media (min-width: 900px) {
  .hero .wrap { grid-template-columns: 1.05fr .95fr; }
}
.hero-copy { display: flex; flex-direction: column; gap: 18px; }
.hero-copy h1 { font-size: 40px; line-height: 1.08; font-weight: 700; }
@media (min-width: 640px) { .hero-copy h1 { font-size: var(--is-text-hero); } }
.hero-copy p.lead { font-size: 18px; color: var(--is-muted); max-width: 480px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.hero-meta { display: flex; gap: 22px; margin-top: 10px; flex-wrap: wrap; }
.hero-meta div { display: flex; flex-direction: column; }
.hero-meta strong { font-family: var(--is-font-display); font-size: 22px; color: var(--is-ink); }
.hero-meta span { font-size: 12.5px; color: var(--is-muted); }

.hero-art { display: flex; justify-content: center; position: relative; }
.phone {
  width: 260px;
  background: var(--is-ink);
  border-radius: 38px;
  padding: 12px;
  box-shadow: var(--is-shadow-card);
  position: relative;
}
.phone .screen {
  background: var(--is-shell);
  border-radius: 28px;
  overflow: hidden;
  padding: 16px 14px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 460px;
}
.phone .screen .topbar { display: flex; justify-content: space-between; align-items: center; }
.phone .screen .topbar .app-name { font-family: var(--is-font-display); font-weight: 700; color: var(--is-ink); font-size: 15px; }

.float-card {
  position: absolute;
  background: #fff;
  border: 1px solid var(--is-hairline-cool);
  border-radius: 16px;
  box-shadow: var(--is-shadow-card);
  padding: 12px 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--is-ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.float-card.one { top: 8%; left: -8%; }
.float-card.two { bottom: 10%; right: -10%; }
.float-dot { width: 8px; height: 8px; border-radius: 999px; background: var(--is-level-beginner-dot); }

/* ---------- Section shells ---------- */
section { padding: 72px 0; }
.section-head { display: flex; flex-direction: column; gap: 10px; max-width: 620px; margin-bottom: 40px; }
.section-head h2 { font-size: var(--is-text-section); font-weight: 600; }
.section-head p { color: var(--is-muted); margin: 0; }

/* ---------- Features ---------- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 640px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .features-grid { grid-template-columns: repeat(4, 1fr); } }

.feature-card {
  background: #fff;
  border: 1px solid var(--is-hairline-cool);
  border-radius: var(--is-radius-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.feature-card h3 { font-size: 17px; font-weight: 600; font-family: var(--is-font-ui); color: var(--is-ink); }
.feature-card p { margin: 0; color: var(--is-muted); font-size: 14.5px; }

/* ---------- Topics ---------- */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 640px) { .topics-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 980px) { .topics-grid { grid-template-columns: repeat(4, 1fr); } }

.topic-card {
  background: var(--is-paper);
  border: 1px solid var(--is-hairline);
  border-radius: 16px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.topic-card:nth-child(3n+2) { background: var(--is-blue-tint); border-color: #D9E6FA; }
.topic-card h3 { font-size: 15.5px; font-weight: 600; font-family: var(--is-font-ui); color: var(--is-ink); }
.topic-card p { margin: 0; color: var(--is-muted); font-size: 13px; line-height: 1.5; }

/* ---------- How it works ---------- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  counter-reset: step;
}
@media (min-width: 780px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { position: relative; padding-top: 8px; }
.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--is-orange-tint);
  color: var(--is-orange-ink);
  font-family: var(--is-font-display);
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 14px;
}
.step h3 { font-size: 18px; margin-bottom: 6px; color: var(--is-ink); }
.step p { margin: 0; color: var(--is-muted); font-size: 15px; }

/* ---------- Levels ---------- */
.levels-panel {
  background: #fff;
  border: 1px solid var(--is-hairline-cool);
  border-radius: var(--is-radius-card);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 860px) { .levels-panel { grid-template-columns: 1fr 1fr; align-items: center; } }

.level-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--is-radius-pill);
  font-size: 13.5px;
  font-weight: 600;
}
.level-chip .dot { width: 8px; height: 8px; border-radius: 999px; }
.level-chip.beginner { background: var(--is-level-beginner-bg); color: var(--is-level-beginner-fg); }
.level-chip.beginner .dot { background: var(--is-level-beginner-dot); }
.level-chip.intermediate { background: var(--is-level-intermediate-bg); color: var(--is-level-intermediate-fg); }
.level-chip.intermediate .dot { background: var(--is-level-intermediate-dot); }
.level-chip.advanced { background: var(--is-level-advanced-bg); color: var(--is-level-advanced-fg); }
.level-chip.advanced .dot { background: var(--is-level-advanced-dot); }

.levels-list { display: flex; flex-direction: column; gap: 16px; }
.levels-list .level-row { display: flex; gap: 14px; align-items: flex-start; }
.levels-list p { margin: 0; color: var(--is-muted); font-size: 14.5px; }

/* Question card (component) */
.question-card {
  background: var(--is-paper);
  border: 1px solid var(--is-hairline);
  border-radius: var(--is-radius-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.question-card .tags { display: flex; align-items: center; gap: 10px; }
.topic-chip {
  padding: 6px 13px;
  border-radius: var(--is-radius-pill);
  background: var(--is-orange-tint);
  color: var(--is-orange-ink);
  font-size: 12.5px;
  font-weight: 700;
}
.question-card h3 {
  font-size: var(--is-text-title);
  font-weight: 700;
  line-height: 1.2;
}
.question-card .answer { color: var(--is-body); font-size: 16px; line-height: 1.6; margin: 0; }
.question-card .actions { display: flex; gap: 10px; padding-top: 4px; }
.question-card .actions .btn { flex: 1; min-height: 44px; padding: 12px 16px; font-size: 14.5px; }
.question-card .actions .btn-ghost {
  background: #fff; border: 1.5px solid var(--is-hairline); color: var(--is-body);
}

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--is-ink);
  border-radius: 28px;
  margin: 0 24px;
  padding: 56px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
  color: #fff;
  max-width: 1120px;
  margin-inline: auto;
}
.cta-band h2 { color: #fff; font-size: 32px; max-width: 520px; }
.cta-band p { color: #C7CEDA; max-width: 460px; margin: 0; }
.cta-band .hero-actions { margin-top: 4px; }
.cta-feature-graphic {
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 340px;
  opacity: .22;
  border-radius: 20px;
  pointer-events: none;
}
@media (max-width: 720px) { .cta-feature-graphic { display: none; } }

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; gap: 12px; max-width: 760px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--is-hairline-cool);
  border-radius: 16px;
  padding: 18px 22px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--is-ink);
  font-size: 15.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--is-muted); font-weight: 400; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin: 10px 0 0; color: var(--is-muted); font-size: 14.5px; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--is-hairline);
  padding: 40px 0 48px;
}
footer .wrap {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
@media (min-width: 720px) {
  footer .wrap { flex-direction: row; justify-content: space-between; align-items: center; }
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand img { width: 26px; height: 26px; border-radius: 7px; }
.footer-brand span { font-family: var(--is-font-display); font-weight: 700; color: var(--is-ink); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { font-size: 13.5px; color: var(--is-muted); }
.footer-links a:hover { color: var(--is-orange-ink); }
.footer-copy { font-size: 12.5px; color: var(--is-faint); }

/* ---------- Legal pages ---------- */
.legal-hero {
  padding: 56px 0 8px;
}
.legal-hero h1 {
  font-size: 36px;
  font-weight: 700;
}
.legal-hero .updated {
  font-size: 13.5px;
  color: var(--is-muted);
  margin-top: 8px;
}
.legal {
  padding: 32px 0 80px;
}
.legal .wrap {
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.legal .legal-body {
  background: #fff;
  border: 1px solid var(--is-hairline-cool);
  border-radius: var(--is-radius-card);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.legal h2 {
  font-size: 20px;
  font-weight: 600;
  font-family: var(--is-font-ui);
  color: var(--is-ink);
}
.legal h2 .num {
  display: inline-block;
  min-width: 26px;
  color: var(--is-orange-ink);
  font-family: var(--is-font-eyebrow);
}
.legal p, .legal li { color: var(--is-body); font-size: 15px; line-height: 1.7; margin: 0; }
.legal ul { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 6px; }
.legal-body section { display: flex; flex-direction: column; gap: 12px; padding: 0; }
.legal a { font-weight: 600; }
.legal .toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 18px 22px;
  background: var(--is-shell);
  border: 1px solid var(--is-hairline);
  border-radius: 16px;
  font-size: 13.5px;
}
.legal .toc a { color: var(--is-body); font-weight: 500; }
.legal .toc a:hover { color: var(--is-orange-ink); }