/* =============================================================================
   Conversor — conversor.ai homepage styles
   Layered on top of design-system/colors_and_type.css (tokens + DM Sans/Mono).
   Keep this file purely layout + page chrome; don't invent new brand values.
   ============================================================================= */

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cv-body);
  color: var(--cv-fg);
  font-family: var(--cv-font-sans);
  font-size: var(--cv-text-base);
  line-height: var(--cv-leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; }

/* -----------------------------------------------------------------------------
   Shared primitives
   ----------------------------------------------------------------------------- */

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--cv-space-10);
}

.eyebrow {
  font-size: var(--cv-text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cv-fg-subtle);
  margin: 0 0 var(--cv-space-4);
}

.section {
  padding: var(--cv-space-20) 0;
  border-top: 1px solid var(--cv-border);
}

.section--flush { border-top: none; }

/* Alternate tone — lifts every other section off the body color for subtle
   section-to-section contrast without breaking the warm-paper aesthetic. */
.section--alt { background-color: var(--cv-canvas); }

/* -----------------------------------------------------------------------------
   Paper fiber — SVG fractal-noise textures generated inline (no assets loaded).
   Three variants with different grain frequencies to rotate across sections so
   the page reads as stacked sheets of paper, each with its own micro-texture.
   Tune `opacity=` in the SVG <rect> to make it more/less pronounced.
   ----------------------------------------------------------------------------- */
.paper { background-repeat: repeat; }

.paper-a {
  /* Fine paper fiber — tight grain, feels like bond paper. */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='p'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch' seed='2'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23p)' opacity='0.26'/></svg>");
}
.paper-b {
  /* Coarser fiber — feels like kraft or cover stock. */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='p'><feTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='2' stitchTiles='stitch' seed='7'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23p)' opacity='0.24'/></svg>");
}
.paper-c {
  /* Very fine speckle — feels like laid paper held to the light. */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='p'><feTurbulence type='fractalNoise' baseFrequency='1.2' numOctaves='1' stitchTiles='stitch' seed='12'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23p)' opacity='0.22'/></svg>");
}

/* Buttons — mirror the app kit recipes exactly. */
.btn {
  font-family: var(--cv-font-sans);
  font-size: var(--cv-text-sm);
  font-weight: 500;
  border-radius: var(--cv-radius-md);
  cursor: pointer;
  transition:
    background var(--cv-dur-fast) var(--cv-ease),
    color var(--cv-dur-fast) var(--cv-ease),
    border-color var(--cv-dur-fast) var(--cv-ease);
  border: none;
  padding: 10px 18px;
  display: inline-flex;
  align-items: center;
  gap: var(--cv-space-2);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--cv-stone-900);
  color: #FFF;
}
.btn-primary:hover { background: var(--cv-stone-700); }

.btn-secondary {
  background: #FFF;
  color: var(--cv-stone-900);
  border: 1px solid var(--cv-stone-300);
  padding: 9px 17px;
}
.btn-secondary:hover { border-color: var(--cv-stone-400); }

.btn-ghost {
  background: transparent;
  color: var(--cv-stone-700);
  padding: 8px 12px;
}
.btn-ghost:hover { background: var(--cv-surface-muted); }

/* -----------------------------------------------------------------------------
   Nav
   ----------------------------------------------------------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(248, 247, 243, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--cv-border);
}

.nav__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px var(--cv-space-10);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-family: var(--cv-font-sans);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.015em;
  color: var(--cv-stone-900);
  text-decoration: none;
}

.nav__cta { font-size: var(--cv-text-sm); padding: 8px 14px; }

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

.hero { padding: var(--cv-space-24) 0 var(--cv-space-20); }

.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: var(--cv-space-16);
  align-items: center;
}

.hero__title {
  margin: 0;
  font-size: 54px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--cv-stone-900);
}

.hero__subtitle {
  margin: var(--cv-space-6) 0 0;
  font-size: 18px;
  line-height: 1.55;
  color: var(--cv-fg-muted);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  gap: var(--cv-space-3);
  margin-top: var(--cv-space-10);
  flex-wrap: wrap;
}

.hero__note {
  margin-top: var(--cv-space-4);
  font-size: var(--cv-text-xs);
  color: var(--cv-fg-faint);
}

/* Hero diagram — miniature editor timeline */
.diagram {
  background: var(--cv-surface-recessed);
  border: 1px solid var(--cv-border);
  border-radius: var(--cv-radius-xl);
  padding: var(--cv-space-8) var(--cv-space-8) var(--cv-space-6);
  box-shadow: var(--cv-shadow-intervention);
}

.diagram__phase {
  display: flex;
  align-items: center;
  gap: var(--cv-space-4);
}
.diagram__phase-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--cv-stone-900);
}
.diagram__phase-meta {
  margin-left: auto;
  font-size: var(--cv-text-xs);
  color: var(--cv-fg-subtle);
}

.diagram__children {
  margin: var(--cv-space-3) 0 var(--cv-space-6) 34px;
  display: flex;
  flex-direction: column;
  gap: var(--cv-space-2);
}

.diagram__intervention {
  background: var(--cv-surface);
  border: 1px solid var(--cv-border);
  border-radius: var(--cv-radius-md);
  padding: 10px 12px;
  font-size: var(--cv-text-sm);
  display: flex;
  align-items: center;
  gap: var(--cv-space-3);
}

.diagram__badge {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--cv-stone-400);
  color: var(--cv-stone-600);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.diagram__gate {
  background: var(--cv-phase-blue-wash);
  border: 1px solid var(--cv-phase-blue-border);
  border-radius: var(--cv-radius-md);
  padding: 10px 12px;
}
.diagram__gate-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--cv-phase-blue-ink);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.diagram__gate-body { font-size: var(--cv-text-sm); color: var(--cv-stone-800); }

/* -----------------------------------------------------------------------------
   "How it works" — 3 phase cards
   ----------------------------------------------------------------------------- */

.section__head {
  max-width: 640px;
  margin: 0 auto var(--cv-space-12);
  text-align: center;
}
.section__head h2 {
  margin: 0;
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--cv-stone-900);
}
.section__head p {
  margin: var(--cv-space-4) 0 0;
  font-size: 17px;
  line-height: 1.55;
  color: var(--cv-fg-muted);
}

.phase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--cv-space-6);
}

.phase-card {
  background: var(--cv-surface);
  border: 1px solid var(--cv-border);
  border-radius: var(--cv-radius-lg);
  padding: var(--cv-space-8);
  display: flex;
  flex-direction: column;
  gap: var(--cv-space-3);
}

.phase-card__head {
  display: flex;
  align-items: center;
  gap: var(--cv-space-3);
}

.phase-card__step {
  font-family: var(--cv-font-mono);
  font-size: 11px;
  color: var(--cv-fg-subtle);
  letter-spacing: 0.04em;
}

.phase-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--cv-stone-900);
  letter-spacing: -0.01em;
}

.phase-card__body {
  margin: 0;
  font-size: var(--cv-text-sm);
  line-height: 1.6;
  color: var(--cv-fg-muted);
}

/* -----------------------------------------------------------------------------
   Progress Gate differentiator
   ----------------------------------------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: var(--cv-space-16);
  align-items: center;
}

.split h2 {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--cv-stone-900);
}
.split p {
  margin: var(--cv-space-5) 0 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--cv-fg-muted);
  max-width: 460px;
}

.gate-illustration {
  background: var(--cv-phase-blue-wash);
  border: 1px solid var(--cv-phase-blue-border);
  border-radius: var(--cv-radius-lg);
  padding: var(--cv-space-6);
}
.gate-illustration__label {
  color: var(--cv-phase-blue-ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--cv-space-2);
  margin-bottom: var(--cv-space-4);
}
.gate-illustration__row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: var(--cv-text-sm);
  padding: 4px 0;
  color: var(--cv-stone-800);
}
.gate-illustration__mark { width: 14px; font-weight: 600; flex: 0 0 14px; }
.gate-illustration__mark--pass { color: var(--cv-signal-green-ink); }
.gate-illustration__mark--pending { color: var(--cv-stone-400); }

/* -----------------------------------------------------------------------------
   Waitlist form
   ----------------------------------------------------------------------------- */

.waitlist {
  background-color: var(--cv-canvas);
  border-top: 1px solid var(--cv-border);
  border-bottom: 1px solid var(--cv-border);
}

.waitlist__inner {
  max-width: 620px;
  margin: 0 auto;
  padding: var(--cv-space-24) var(--cv-space-10);
  text-align: center;
}

.waitlist h2 {
  margin: 0;
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--cv-stone-900);
}
.waitlist p {
  margin: var(--cv-space-4) 0 var(--cv-space-8);
  font-size: 16px;
  line-height: 1.55;
  color: var(--cv-fg-muted);
}

.form {
  display: flex;
  gap: var(--cv-space-3);
  align-items: stretch;
  justify-content: center;
  max-width: 480px;
  margin: 0 auto;
}

.form__input {
  flex: 1;
  min-width: 0;
  font-family: var(--cv-font-sans);
  font-size: var(--cv-text-sm);
  color: var(--cv-stone-900);
  background: #FFF;
  border: 1px solid var(--cv-stone-300);
  border-radius: var(--cv-radius-md);
  padding: 10px 14px;
  transition: border-color var(--cv-dur-fast) var(--cv-ease),
              box-shadow var(--cv-dur-fast) var(--cv-ease);
}
.form__input:focus {
  outline: none;
  border-color: var(--cv-stone-500);
  box-shadow: 0 0 0 3px rgba(120, 113, 108, 0.12);
}
.form__input::placeholder { color: var(--cv-fg-faint); }

.form__submit { padding: 10px 20px; }
.form__submit[disabled] { opacity: 0.6; cursor: wait; }

/* Honeypot — off-screen for real users, visible DOM for bots. */
.form__honeypot {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__microcopy {
  margin: var(--cv-space-4) 0 0;
  font-size: var(--cv-text-xs);
  color: var(--cv-fg-faint);
}

.form__error {
  margin: var(--cv-space-3) 0 0;
  font-size: var(--cv-text-xs);
  color: var(--cv-signal-red-ink);
  min-height: 1.2em;
}

.waitlist__success {
  display: none;
  background: var(--cv-surface);
  border: 1px solid var(--cv-border-strong);
  border-radius: var(--cv-radius-lg);
  padding: var(--cv-space-8) var(--cv-space-6);
  max-width: 480px;
  margin: 0 auto;
}
.waitlist__success-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--cv-stone-900);
  margin: 0 0 var(--cv-space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--cv-space-2);
}
.waitlist__success-title svg { color: var(--cv-signal-green-ink); }
.waitlist__success-body {
  margin: 0;
  font-size: var(--cv-text-sm);
  color: var(--cv-fg-muted);
}
.is-submitted .form,
.is-submitted .form__microcopy,
.is-submitted .form__error { display: none; }
.is-submitted .waitlist__success { display: block; }

/* -----------------------------------------------------------------------------
   FAQ
   ----------------------------------------------------------------------------- */

.faq {
  max-width: 720px;
  margin: 0 auto;
}

.faq__item {
  border-top: 1px solid var(--cv-border);
  padding: var(--cv-space-5) 0;
}
.faq__item:last-child { border-bottom: 1px solid var(--cv-border); }

.faq__q {
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--cv-stone-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cv-space-4);
}
.faq__q::-webkit-details-marker { display: none; }

.faq__q::after {
  content: "+";
  font-family: var(--cv-font-mono);
  font-size: 18px;
  color: var(--cv-fg-subtle);
  transition: transform var(--cv-dur-fast) var(--cv-ease),
              color var(--cv-dur-fast) var(--cv-ease);
  line-height: 1;
}
details[open] .faq__q::after {
  content: "−";
  color: var(--cv-stone-700);
}

.faq__a {
  margin: var(--cv-space-3) 0 0;
  font-size: var(--cv-text-sm);
  line-height: 1.6;
  color: var(--cv-fg-muted);
  max-width: 620px;
}

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

.footer {
  padding: var(--cv-space-12) 0;
  background: var(--cv-surface-sunken);
  border-top: 1px solid var(--cv-border);
}

.footer__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--cv-space-10);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--cv-space-8);
  font-size: var(--cv-text-xs);
  color: var(--cv-fg-subtle);
  flex-wrap: wrap;
}

.footer__tagline {
  font-size: var(--cv-text-sm);
  color: var(--cv-stone-700);
  max-width: 360px;
}

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

@media (max-width: 900px) {
  .container { padding: 0 var(--cv-space-6); }
  .nav__inner { padding: 12px var(--cv-space-6); }
  .footer__inner { padding: 0 var(--cv-space-6); }

  .hero { padding: var(--cv-space-16) 0 var(--cv-space-12); }
  .hero__grid { grid-template-columns: 1fr; gap: var(--cv-space-12); }
  .hero__title { font-size: 40px; }
  .hero__subtitle { font-size: 17px; }

  .section { padding: var(--cv-space-16) 0; }
  .section__head h2 { font-size: 28px; }

  .phase-grid { grid-template-columns: 1fr; gap: var(--cv-space-4); }

  .split { grid-template-columns: 1fr; gap: var(--cv-space-8); }
  .split h2 { font-size: 26px; }

  .waitlist__inner { padding: var(--cv-space-16) var(--cv-space-6); }
  .waitlist h2 { font-size: 28px; }

  .form { flex-direction: column; }
}

@media (max-width: 560px) {
  .hero__title { font-size: 34px; }
  .nav__links { display: none; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}