/* ---------- Tokens ---------- */
:root{
  --ink: #EAEEF6;        /* near-white text/borders on the dark navy */
  --ink-soft: #92A1BE;   /* muted blue-grey text */
  --paper: #0B1526;      /* main background — deep navy */
  --paper-alt: #101F38;  /* secondary section background */
  --panel: #142442;      /* card/panel background */
  --line: #2B3D60;       /* hairline rules */
  --yellow: #F4C33F;     /* highlighter accent */
  --green: #33C285;
  --red: #FF7C63;
  --radius: 3px;
  --serif: "Source Serif 4", Georgia, serif;
  --display: "Space Grotesk", Arial, sans-serif;
  --maxw: 1120px;
}

*{ box-sizing: border-box; }
button{ color: inherit; font: inherit; } /* navegadores dão cor própria a <button>; isso garante que sempre herdem do tema */
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3, .btn, nav, .logo, .kicker, .filter-btn, .step-bubble, .footer-heading{
  font-family: var(--display);
}
h1,h2,h3{ margin: 0 0 .5em; font-weight: 600; letter-spacing: -0.01em; }
h1{ font-size: clamp(2rem, 4.2vw, 3.1rem); line-height: 1.08; }
h2{ font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3{ font-size: 1.15rem; }
p{ margin: 0 0 1em; }
a{ color: inherit; }
.muted{ color: var(--ink-soft); font-size: .92rem; }
.wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}

/* faint bubble-sheet texture across the page */
.sheet-texture{
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image: radial-gradient(circle, rgba(234,238,246,0.06) 1.1px, transparent 1.1px);
  background-size: 26px 26px;
  opacity: .6;
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  border: 1.5px solid var(--ink);
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, transform .1s ease;
}
.btn-primary{ background: var(--ink); color: var(--paper); }
.btn-primary:hover{ background: var(--yellow); border-color: var(--ink); color: var(--ink); }
.btn-ghost{ background: transparent; color: var(--ink); }
.btn-ghost:hover{ background: var(--panel); }
.btn:active{ transform: translateY(1px); }
.btn-block{ width: 100%; }
.btn:disabled{ opacity: .4; cursor: not-allowed; }

/* ---------- Bubble mark ---------- */
.bubble{
  display:inline-block; width:9px; height:9px; border-radius:50%;
  border: 1.4px solid var(--ink);
  margin-right: 3px;
}
.bubble.filled{ background: var(--ink); }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 40;
  background: var(--paper);
  border-bottom: 1.5px solid var(--ink);
}
.header-row{
  display:flex; align-items:center; justify-content: space-between;
  height: 76px;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-weight: 700; font-size: 1.2rem; text-decoration:none; color: var(--ink);
}
.logo-mark{ display:inline-flex; align-items:center; }
.main-nav{ display:flex; gap: 32px; }
.main-nav a{ text-decoration:none; font-size: .95rem; font-weight: 500; }
.main-nav a:hover{ text-decoration: underline; text-underline-offset: 4px; }
.header-actions{ display:flex; align-items:center; gap:14px; }
.btn-header{ padding: 10px 20px; font-size: .88rem; }
.nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;
}
.nav-toggle span{ width: 22px; height:2px; background: var(--ink); display:block; }

/* ---------- Hero ---------- */
.hero{ position: relative; z-index: 1; padding: 72px 0 56px; }
.hero-grid{
  display:grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center;
}
.kicker{
  font-size: .82rem; font-weight: 600; letter-spacing: .02em;
  color: var(--ink-soft); margin-bottom: 14px;
}
.lede{ font-size: 1.12rem; color: var(--ink-soft); max-width: 52ch; }
.hero-actions{ display:flex; gap: 14px; flex-wrap: wrap; margin: 26px 0 34px; }
.hero-facts{
  list-style:none; padding:0; margin:0; display:flex; gap: 28px; flex-wrap: wrap;
  border-top: 1px solid var(--line); padding-top: 18px;
}
.hero-facts li{ font-family: var(--display); font-size: .85rem; color: var(--ink-soft); }
.hero-facts strong{ display:block; font-size: 1.3rem; color: var(--ink); }

/* answer card visual */
.answer-card{
  background: var(--panel);
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  padding: 22px 22px 26px;
  box-shadow: 8px 8px 0 var(--ink);
}
.answer-card-head{
  display:flex; justify-content: space-between;
  font-family: var(--display); font-weight: 700; font-size: .72rem;
  letter-spacing: .04em; color: var(--ink-soft);
  border-bottom: 1px dashed var(--line); padding-bottom: 12px; margin-bottom: 10px;
}
.answer-card-legend{
  display:grid; grid-template-columns: 26px repeat(5, 1fr);
  font-family: var(--display); font-size: .72rem; color: var(--ink-soft);
  text-align:center; margin-bottom: 6px;
}
.answer-card-row{
  display:grid; grid-template-columns: 26px repeat(5, 1fr);
  align-items:center; padding: 5px 0;
}
.answer-card-row .qn{ font-family: var(--display); font-size: .72rem; color: var(--ink-soft); }
.answer-card-row .cell{ display:flex; justify-content:center; }

/* ---------- Strip ---------- */
.strip{ background: var(--panel); color: var(--ink); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; z-index:1; }
.strip-row{
  display:flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 14px 24px; font-size: .85rem; font-family: var(--display);
}
.strip-row p{ margin:0; }

/* ---------- Section shared ---------- */
section{ position: relative; z-index: 1; }
.section-head{ max-width: 62ch; margin-bottom: 34px; }
.section-head p{ color: var(--ink-soft); }
.catalog{ padding: 72px 0; }

/* ---------- Filters ---------- */
.filters{ display:flex; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.filter-btn{
  background: transparent; border: 1.5px solid var(--ink);
  border-radius: 999px; padding: 7px 18px; font-size: .85rem; font-weight: 600;
  cursor:pointer; color: var(--ink);
}
.filter-btn.is-active, .filter-btn:hover{ background: var(--ink); color: var(--paper); }

/* ---------- Product grid ---------- */
.product-grid{
  display:flex; justify-content:flex-start;
}
.product-card{
  background: var(--panel);
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  padding: 30px;
  display:flex; flex-direction:column; gap: 12px;
  max-width: 440px;
  width: 100%;
  box-shadow: 8px 8px 0 var(--line);
}
.product-top{ display:flex; justify-content: space-between; align-items:flex-start; }
.product-year{
  font-family: var(--display); font-size: .72rem; font-weight:700;
  color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px;
  padding: 2px 10px;
}
.product-card h3{ margin: 0; }
.product-meta{
  display:flex; gap: 14px; font-size: .82rem; color: var(--ink-soft);
  font-family: var(--display); border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line); padding: 10px 0;
}
.product-desc{ font-size: .93rem; color: var(--ink-soft); flex-grow:1; margin:0; }
.product-bottom{ display:flex; align-items:center; justify-content: space-between; margin-top: 6px; }
.product-price{ font-family: var(--display); font-weight: 700; font-size: 1.25rem; }
.add-btn{
  background: var(--ink); color: var(--paper); border: none; border-radius: var(--radius);
  padding: 9px 16px; font-family: var(--display); font-weight:600; font-size: .85rem; cursor:pointer;
  text-decoration: none; display: inline-block;
}
.add-btn:hover{ background: var(--yellow); color: var(--ink); }
.add-btn.is-added{ background: var(--green); color: #fff; }
.product-payment-note{ font-size: .78rem; color: var(--ink-soft); margin: 4px 0 0; }

/* ---------- How it works ---------- */
.how{ padding: 72px 0; background: var(--paper-alt); border-top:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink); }
.how-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 30px; }
.step-bubble{
  display:inline-flex; align-items:center; justify-content:center;
  width: 34px; height:34px; border-radius:50%; border: 1.5px solid var(--ink);
  font-weight:700; margin-bottom: 14px;
}
.how-step p{ color: var(--ink-soft); font-size: .95rem; }

/* ---------- FAQ ---------- */
.faq{ padding: 72px 0; }
.faq-list{ border-top: 1.5px solid var(--ink); }
.faq-item{ border-bottom: 1.5px solid var(--ink); }
.faq-question{
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  font-family: var(--display); font-weight: 600; font-size: 1.02rem;
  padding: 18px 0; display:flex; justify-content: space-between; align-items:center;
  color: var(--ink);
}
.faq-question::after{ content: "+"; font-size: 1.4rem; font-weight: 400; }
.faq-item.is-open .faq-question::after{ content: "–"; }
.faq-answer{
  max-height: 0; overflow: hidden; transition: max-height .25s ease;
}
.faq-item.is-open .faq-answer{ max-height: 240px; }
.faq-answer p{ padding-bottom: 18px; color: var(--ink-soft); margin:0; }

/* ---------- CTA ---------- */
.cta{ background: var(--yellow); color: var(--paper); padding: 56px 0; }
.cta-row{ display:flex; justify-content: space-between; align-items:center; gap: 24px; flex-wrap: wrap; }
.cta h2{ margin-bottom: 6px; color: var(--paper); }
.cta p{ margin:0; color: #1d2a12; opacity: .75; }
.cta .btn-primary{ background: var(--paper); color: var(--ink); border-color: var(--paper); }
.cta .btn-primary:hover{ background: var(--panel); }

/* ---------- Footer ---------- */
.site-footer{ padding: 48px 0 0; }
.footer-row{ display:flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 32px; }
.footer-logo{ font-weight:700; font-size: 1.1rem; margin:0 0 6px; }
.footer-cols{ display:flex; gap: 56px; }
.footer-heading{ font-weight:700; font-size: .85rem; margin: 0 0 8px; }
.footer-bottom{
  border-top: 1.5px solid var(--ink); padding: 16px 24px; font-size: .82rem; color: var(--ink-soft);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-visual{ order: -1; }
  .how-grid{ grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 720px){
  .main-nav{
    position: absolute; top: 76px; left:0; right:0;
    background: var(--paper); border-bottom: 1.5px solid var(--ink);
    flex-direction:column; padding: 16px 24px; gap: 16px;
    display:none;
  }
  .main-nav.is-open{ display:flex; }
  .nav-toggle{ display:flex; }
  .product-card{ max-width: 100%; }
  .cta-row{ flex-direction:column; align-items:flex-start; }
}