/* Just Knot It: brand tokens. Coral is ~3.1:1 on white and indigo, so it is
   used for fills, icons, and bold large button labels only, never small text. */
:root {
  --indigo: #3B3A8F;
  --coral: #F2645A;
  --coral-press: #E04F45;
  --mist: #C9C7F0;

  --bg: #FBFAFF;
  --bg-alt: #F1F0FB;
  --surface: #FFFFFF;
  --text: #16152B;
  --muted: #4A4966;
  --accent-text: #3B3A8F;       /* indigo for informational text */
  --chip-bg: #C9C7F0;
  --chip-text: #3B3A8F;
  --border: #DCDAF3;
  --hero-bg: linear-gradient(180deg, #4A4AA0 0%, #2E2D6E 100%);
  --hero-text: #FFFFFF;
  --hero-muted: #DCDAF7;
  --focus: #3B3A8F;
  --shadow: 0 10px 30px rgb(30 28 90 / 0.14);

  --radius: 18px;
  --wrap: 68rem;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12112A;
    --bg-alt: #19183A;
    --surface: #201F47;
    --text: #F4F3FF;
    --muted: #C3C1E6;
    --accent-text: #A5A4F0;
    --chip-bg: #2E2D63;
    --chip-text: #D6D5FA;
    --border: #2E2D63;
    --hero-bg: linear-gradient(180deg, #2A2966 0%, #12112A 100%);
    --hero-muted: #C9C7F0;
    --focus: #A5A4F0;
    --shadow: 0 10px 30px rgb(0 0 0 / 0.4);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-text); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 6px; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.1rem, 6.5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 4.5vw, 2.25rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 max(16px, env(safe-area-inset-left)) 0 max(16px, env(safe-area-inset-right)); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip { position: absolute; left: 16px; top: -60px; z-index: 10; padding: 10px 14px; background: var(--surface); color: var(--text); border-radius: 10px; font-weight: 600; }
.skip:focus { top: 12px; }

/* Buttons: coral fill with a bold 19px+ white label (large text, passes AA). */
.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 1.4rem;
  background: var(--coral); color: #FFFFFF;
  font: 700 1.2rem/1 var(--font); text-decoration: none;
  border: 0; border-radius: 999px; cursor: pointer;
  box-shadow: 0 6px 18px rgb(242 100 90 / 0.35);
  transition: background-color 0.15s, transform 0.15s;
}
.button:hover { background: var(--coral-press); text-decoration: none; }
.button:active { transform: translateY(1px); }
.button[disabled] { opacity: 0.7; cursor: progress; }

/* Header */
.site-header { position: absolute; inset: 0 0 auto 0; z-index: 2; padding-top: env(safe-area-inset-top); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #FFFFFF; text-decoration: none; font: 800 1.1rem/1 var(--font-display); }
.brand img { border-radius: 8px; }
.header-cta { color: #FFFFFF; font-weight: 600; font-size: 0.95rem; text-decoration: none; padding: 8px 14px; border: 1.5px solid rgb(255 255 255 / 0.5); border-radius: 999px; }
.header-cta:hover { background: rgb(255 255 255 / 0.12); }

/* Hero */
.hero { background: var(--hero-bg); color: var(--hero-text); padding: calc(96px + env(safe-area-inset-top)) 0 64px; }
.hero-grid { display: grid; gap: 40px; align-items: center; }
.eyebrow { display: inline-block; margin-bottom: 1rem; padding: 4px 12px; border-radius: 999px; background: rgb(255 255 255 / 0.14); color: var(--hero-muted); font-weight: 600; font-size: 0.9rem; }
.lede { font-size: 1.15rem; color: var(--hero-muted); max-width: 34rem; margin-bottom: 1.75rem; }

.demo { margin: 0; display: grid; gap: 14px; max-width: 26rem; width: 100%; justify-self: center; }
.bubble.ask {
  justify-self: end; max-width: 88%;
  padding: 12px 16px; border-radius: 20px 20px 6px 20px;
  background: rgb(255 255 255 / 0.16); color: #FFFFFF; font-size: 1rem;
}
.answer {
  padding: 18px 18px 16px; border-radius: var(--radius);
  background: var(--surface); color: var(--text); box-shadow: var(--shadow);
  border-left: 6px solid var(--coral);
}
.answer-title { font: 800 1.6rem/1.1 var(--font-display); margin: 0 0 12px; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px;
  background: var(--chip-bg); color: var(--chip-text);
  font-weight: 600; font-size: 0.9rem;
}
.chip svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.demo figcaption { color: var(--hero-muted); font-size: 0.9rem; text-align: center; }

/* Steps */
.how { padding: 40px 0; background: var(--bg-alt); border-bottom: 1px solid var(--border); }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 20px; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding-left: 52px; color: var(--muted); }
.steps li strong { display: block; color: var(--text); font-size: 1.1rem; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 2px;
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--indigo); color: #FFFFFF; font-weight: 800;
}

/* Outcomes */
.outcomes { padding: 64px 0; }
.cards { display: grid; gap: 18px; margin-top: 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card p { color: var(--muted); margin: 0; }
.card-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--chip-bg); display: grid; place-items: center; margin-bottom: 16px; }
.card-icon svg { width: 24px; height: 24px; fill: none; stroke: var(--coral); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }

/* Privacy */
.privacy { padding: 64px 0; background: var(--bg-alt); border-block: 1px solid var(--border); }
.privacy-grid { display: grid; gap: 24px; margin-top: 24px; }
.privacy-grid h3 { color: var(--accent-text); }
.privacy-grid p { color: var(--muted); margin: 0; }

/* Join */
.join { padding: 72px 0 80px; scroll-margin-top: 16px; }
.join-inner { max-width: 40rem; text-align: center; }
.join-icon { margin: 0 auto 20px; border-radius: 22px; box-shadow: var(--shadow); }
.join-inner > p { color: var(--muted); }
.signup { margin-top: 28px; text-align: left; }
.signup label { display: block; font-weight: 700; margin-bottom: 8px; }
.field-row { display: grid; gap: 12px; }
.signup input {
  width: 100%; min-height: 52px; padding: 0 16px;
  font: inherit; color: var(--text); background: var(--surface);
  border: 2px solid var(--border); border-radius: 14px;
}
.signup input::placeholder { color: var(--muted); opacity: 0.8; }
.signup input:focus-visible { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px rgb(59 58 143 / 0.25); }
.signup input[aria-invalid="true"] { border-color: #C0362C; }
.status { min-height: 1.6em; margin: 10px 0 0; font-weight: 600; color: var(--text); }
.status.error { color: #B3261E; }
@media (prefers-color-scheme: dark) { .status.error { color: #FFB4AB; } .signup input[aria-invalid="true"] { border-color: #FFB4AB; } }
.fine { font-size: 0.9rem; color: var(--muted); margin: 6px 0 0; }
.thanks { margin-top: 28px; padding: 24px; border-radius: var(--radius); background: var(--chip-bg); color: var(--chip-text); }
.thanks h3 { color: inherit; }
.thanks p { margin: 0; }

/* Footer */
.site-footer { padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }
.footer-row { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.footer-row p { margin: 0; }

/* Simple content pages (privacy, thanks) */
.page-header { background: var(--hero-bg); padding: calc(88px + env(safe-area-inset-top)) 0 40px; color: var(--hero-text); }
.page-header h1 { font-size: clamp(1.9rem, 5vw, 2.75rem); margin: 0; }
.page-header p { color: var(--hero-muted); margin: 8px 0 0; }
.prose { max-width: 44rem; padding-top: 40px; padding-bottom: 64px; }
.prose h2 { font-size: 1.4rem; margin-top: 2rem; }
.prose ul { padding-left: 1.25rem; }
.prose li { margin-bottom: 0.4em; }

@media (min-width: 640px) {
  .field-row { grid-template-columns: 1fr auto; }
  .steps { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 860px) {
  .hero { padding-bottom: 88px; }
  .hero-grid { grid-template-columns: 1.15fr 1fr; gap: 56px; }
  .cards, .privacy-grid { grid-template-columns: repeat(3, 1fr); }
}
.tm { font-size: 0.55em; font-weight: 600; margin-left: 1px; vertical-align: super; line-height: 0; }