/* ============================================================
   AirTracer — Hatch restyle. Layout & components (built on tokens.css).
   Flat, line-based: depth comes from cream canvas + white cards + 1px
   black borders. No shadows anywhere.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-ink-black);
  background: var(--color-cream-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#app { position: relative; width: 100vw; height: 100vh; overflow: hidden; }

/* ---- Screen system ------------------------------------------------ */
.screen {
  position: absolute; inset: 0;
  display: none;
  flex-direction: column; align-items: center; justify-content: center;
  padding: var(--spacing-32);
  text-align: center;
}
.screen.is-active { display: flex; }

/* ---- Display type + swash ----------------------------------------- */
.display {
  font-family: var(--font-display); font-weight: var(--font-weight-regular);
  font-size: clamp(40px, 8vw, 72px);
  line-height: 1.04; letter-spacing: -1.44px;
  margin: 0 0 var(--spacing-24);
}
/* Hand-drawn underline under a keyword (e.g. "Private.") */
.underline-swash { position: relative; white-space: nowrap; }
.underline-swash::after {
  content: ""; position: absolute; left: -1%; right: -1%; bottom: 0.04em; height: 0.1em;
  background: var(--color-mint-splash); border-radius: 3px; transform: rotate(-1.2deg); z-index: -1;
}
.subhead {
  font-size: clamp(18px, 2.2vw, 20px); line-height: var(--leading-body);
  max-width: 600px; margin: 0 0 var(--spacing-32); color: var(--color-charcoal);
}
/* Hand-drawn mint highlight swash behind a keyword */
.mark { position: relative; white-space: nowrap; z-index: 0; }
.mark::before {
  content: ""; position: absolute; z-index: -1;
  left: -0.14em; right: -0.14em; top: 18%; bottom: -2%;
  background: var(--color-mint-splash);
  border-radius: 47% 53% 50% 50% / 62% 58% 42% 38%;
  transform: rotate(-2.2deg);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-pure-white); border: var(--line);
  color: var(--color-ink-black); font-weight: var(--font-weight-bold);
  font-size: var(--text-caption); padding: 7px 16px;
  border-radius: var(--radius-pills); margin-bottom: var(--spacing-24);
}
.grown-up-note {
  font-size: var(--text-caption); color: var(--color-slate);
  margin-top: var(--spacing-24); max-width: 460px;
}

/* ---- Buttons (springy) -------------------------------------------- */
.btn {
  font-family: var(--font-display); font-weight: var(--font-weight-bold);
  font-size: var(--text-body); color: var(--color-ink-black);
  background: var(--color-pure-white);
  border: var(--line); border-radius: var(--radius-buttons);
  padding: 12px 22px; cursor: pointer;
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast) var(--ease-spring), background var(--dur-base) var(--ease-out);
  text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-hard-lg); }
.btn:active { transform: translateY(2px); box-shadow: 0 0 0 0 var(--color-ink-black); }
.btn:focus-visible { outline: 3px solid var(--color-sky-pop); outline-offset: 3px; }
.btn--primary, .btn--confirm { background: var(--color-mint-splash); }
.btn--pastel  { background: var(--color-pure-white); }
.btn--retry   { background: var(--color-pure-white); }
.btn--big { font-size: 20px; padding: 15px 30px; border-radius: var(--radius-buttons); }
.btn-row { display: flex; gap: var(--spacing-12); flex-wrap: wrap; justify-content: center; }

/* ---- Logo / wordmark ---------------------------------------------- */
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.logo__mark {
  width: 40px; height: 40px; border-radius: var(--radius-pills);
  background: var(--color-mint-splash); border: var(--line);
  display: grid; place-items: center;
  font-family: var(--font-display); font-size: 18px; color: var(--color-ink-black);
}
.logo__img { width: 32px; height: 32px; display: block; }
.logo__word { font-family: var(--font-display); font-size: 24px; letter-spacing: -0.5px; }

/* ============================================================
   LANDING PAGE
   ============================================================ */
#screen-welcome.is-active {
  display: block; overflow-y: auto; -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth; padding: 0; text-align: left;
}
.landing {
  position: relative; max-width: var(--page-max-width); margin: 0 auto;
  padding: 0 var(--spacing-24) var(--spacing-120);
}

/* Nav — Hatch: minimal, non-sticky, no border */
.site-nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--spacing-16); padding: var(--spacing-24) 0;
}
.nav-links { display: flex; gap: var(--spacing-28); }
.nav-links a {
  color: var(--color-ink-black); text-decoration: none;
  font-weight: var(--font-weight-medium); font-size: var(--text-caption);
}
.nav-links a:hover { text-decoration: underline; text-underline-offset: 3px; }
.nav-cta { padding: 9px 20px; font-size: var(--text-caption); }

/* Nav pinned to the top of an in-app screen (e.g. the success page) */
.app-nav {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: var(--page-max-width); box-sizing: border-box;
  display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-16);
  padding: var(--spacing-24); z-index: 5;
}

/* Hero */
.hero {
  position: relative; text-align: center;
  min-height: calc(100vh - 96px);   /* nav ≈ 96px → hero fills the rest of the viewport */
  padding: var(--spacing-32) 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.hero .display { max-width: 860px; }
.hero .btn-row { margin-top: var(--spacing-24); }
.reassurance { font-size: var(--text-caption); color: var(--color-slate); margin-top: var(--spacing-20); }

/* Mascot */
.mascot { display: block; }
.mascot--hero {
  position: absolute; left: 0; bottom: 12%; width: clamp(120px, 15vw, 190px); height: auto;
  transform-origin: bottom center;
}
/* Mirrored hand on the right (flipped horizontally, keeps the idle bob) */
.mascot--hero-right {
  left: auto; right: 0; bottom: auto; top: 12%;
  transform: scaleX(-1); transform-origin: top center;
  animation-delay: -2.2s;
}
.mascot--cta { width: 96px; height: auto; }

/* Confetti dots — small filled pastel blobs with hand-drawn, slightly
   imperfect edges (never geometric-perfect), scattered asymmetrically. */
.confetti-dot {
  position: absolute; pointer-events: none; z-index: 0;
  border-radius: 47% 53% 50% 50% / 53% 47% 53% 47%;
  transform: rotate(-6deg);
}
.confetti-dot:nth-of-type(2n)   { border-radius: 52% 48% 46% 54% / 48% 54% 46% 52%; transform: rotate(8deg); }
.confetti-dot:nth-of-type(3n)   { border-radius: 50% 50% 53% 47% / 47% 52% 48% 53%; transform: rotate(-14deg); }
.confetti-dot:nth-of-type(3n+1) { border-radius: 54% 46% 48% 52% / 52% 46% 54% 48%; transform: rotate(4deg); }

/* Floating letter confetti (updated Figma) — scattered Gorditas letters in
   pastels, gently tilted. Size / colour / rotation set inline per letter. */
.confetti-letter {
  position: absolute; pointer-events: none; z-index: 0;
  font-family: var(--font-display); font-weight: 400; line-height: 1;
  -webkit-user-select: none; user-select: none;
  -webkit-text-stroke: 2px var(--color-ink-black);
  paint-order: stroke fill;
}

/* Sections */
.section { position: relative; padding: var(--spacing-80) 0; }
.section-head {
  text-align: center; max-width: 680px; margin: 0 auto var(--spacing-52);
  display: flex; flex-direction: column; align-items: center;
}
.section-title {
  font-family: var(--font-display); font-weight: var(--font-weight-regular);
  font-size: clamp(30px, 5vw, 52px); letter-spacing: var(--tracking-heading);
  line-height: 1.08; margin: var(--spacing-8) 0 var(--spacing-16);
}
.section-sub { font-size: var(--text-body); line-height: var(--leading-body); margin: 0; color: var(--color-charcoal); }

/* How-it-works steps */
.steps {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-24);
}
.step-card {
  position: relative; display: flex; flex-direction: column; align-items: center; text-align: center;
  background: var(--color-pure-white);
  border: var(--line); border-radius: var(--radius-cards);
  padding: var(--spacing-40) var(--spacing-24) var(--spacing-28);
}
.step-num {
  position: absolute; top: -20px; left: 50%; transform: translateX(-50%);
  width: 40px; height: 40px; border-radius: var(--radius-pills); border: var(--line);
  display: grid; place-items: center;
  font-family: var(--font-display); font-size: 18px; color: var(--color-ink-black);
}
.step-card:nth-child(1) .step-num { background: var(--color-mint-splash); }
.step-card:nth-child(2) .step-num { background: var(--color-sky-pop); }
.step-card:nth-child(3) .step-num { background: var(--color-peach-pop); }
.step-card:nth-child(4) .step-num { background: var(--color-bubblegum); }
.step-emoji { font-size: 40px; display: block; margin-bottom: var(--spacing-12); }
.step-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-subheading); margin: 0 0 var(--spacing-8); letter-spacing: -0.3px; }
.step-card p { font-size: var(--text-caption); line-height: var(--leading-caption); margin: 0; color: var(--color-charcoal); }
.feature p { font-size: var(--text-body); line-height: var(--leading-body); margin: 0; color: var(--color-charcoal); }
/* "Big movements, real learning." heading spans full width — one line on
   desktop, wraps naturally as the viewport narrows. */
#learn .section-head { max-width: none; }
#learn .section-title { white-space: normal; }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-24); }
.feature {
  background: transparent; border: none; border-radius: 0;
  padding: 0 var(--spacing-32) var(--spacing-32);
  display: flex; flex-direction: column; gap: var(--spacing-8);
}
.feature-icon { width: 56px; height: 56px; display: block; margin-bottom: var(--spacing-16); }

/* For grown-ups — white card holding a heading + three pastel sub-cards */
.grownup {
  position: relative; display: flex; flex-direction: column; align-items: center; gap: var(--spacing-64);
  background: var(--color-pure-white); border-radius: 24px; padding: var(--spacing-64);
}
/* headline + subhead span the full card width (subhead sits on one line on desktop) */
.grownup .section-head { max-width: none; margin-bottom: 0; }
.grownup-cards { display: flex; gap: var(--spacing-24); width: 100%; }
.grownup-card {
  flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: var(--spacing-12); padding: var(--spacing-32); border-radius: var(--radius-buttons);
}
.grownup-card--peach { background: var(--color-peach-pop); }
.grownup-card--pink  { background: var(--color-bubblegum); }
.grownup-card--sky   { background: var(--color-sky-pop); }
.grownup-card h3 { font-family: var(--font-display); font-weight: 400; font-size: var(--text-subheading); letter-spacing: -0.3px; margin: 0; }
.grownup-card p { font-size: var(--text-caption); line-height: var(--leading-caption); margin: 0; color: var(--color-charcoal); }

/* Closing CTA + footer */
.cta-band {
  position: relative; text-align: center; padding: var(--spacing-100) 0;
  display: flex; flex-direction: column; align-items: center; gap: var(--spacing-24);
}
.site-footer {
  position: relative; overflow: visible;
  background: var(--color-mint-splash); border-radius: 24px;
  padding: var(--spacing-64); margin-top: var(--spacing-64);
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--spacing-40);
  color: var(--color-ink-black); text-align: left;
}
.site-footer__logo {
  position: absolute; right: 48px; top: 50%; transform: translateY(-50%);
  width: 340px; height: 340px;
}
.site-footer__word {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(56px, 10vw, 100px); line-height: 1.08; letter-spacing: -1.5px; margin: 0;
}
.site-footer__built { font-family: var(--font-body); font-weight: 500; font-size: var(--text-body); margin: 0; }
.site-footer__built a { color: inherit; text-decoration: underline; }

/* ============================================================
   IN-APP SCREENS
   ============================================================ */

/* Permissions / notice */
.notice {
  display: flex; flex-direction: column; align-items: center; gap: var(--spacing-24);
  background: var(--color-pure-white); border: var(--line);
  border-radius: 24px; padding: var(--spacing-48) var(--spacing-48) var(--spacing-64);
  max-width: 600px;
}
.notice .display { font-size: clamp(28px, 4vw, 34px); margin-bottom: 0; }
.notice .subhead { font-size: var(--text-body); line-height: var(--leading-body); }   /* 18px / 150% */
.notice .btn { margin-top: var(--spacing-16); }   /* 24px gap + 16px = 40px to the button */
#perm-error:empty { display: none; }               /* collapse when there's no error so bottom padding matches the top */
.notice-icon { width: 72px; height: 72px; display: block; }

/* Say a word */
.mic {
  width: 168px; height: 168px; border-radius: var(--radius-pills);
  background: var(--color-pure-white); color: var(--color-ink-black);
  border: var(--line-2); cursor: pointer;
  display: grid; place-items: center; font-size: 64px;
  transition: transform var(--dur-fast) var(--ease-spring), background var(--dur-base) var(--ease-out);
}
.mic:hover { transform: scale(1.04); }
.mic:active { transform: scale(0.96); }
.mic.is-listening { background: var(--color-mint-splash); animation: mic-pulse 1.1s ease-in-out infinite; }
.heard-word {
  font-family: var(--font-body); font-weight: 400;
  font-size: clamp(40px, 8vw, 72px); letter-spacing: -1.44px;
  margin: var(--spacing-24) 0;
}
#screen-confirm .btn-row { margin-top: var(--spacing-16); }   /* extra 16px below the word */
.mic-icon { width: 84px; height: 84px; display: block; }
#listening-status { font-size: var(--text-body); line-height: var(--leading-body); }   /* 18px / 150% */

/* Grown-up typed fallback — wrapped in a white card (updated Figma) */
.fallback-card {
  background: var(--color-pure-white); border: var(--line); border-radius: 24px;
  padding: var(--spacing-24); width: min(590px, 90vw);
  display: flex; flex-direction: column; align-items: center; gap: 17px; margin-top: var(--spacing-32);
}
.fallback-label { font-family: var(--font-display); font-weight: 400; font-size: var(--text-caption); color: var(--color-slate); }
.fallback-row { display: flex; gap: var(--spacing-16); align-items: center; width: 100%; }
.fallback-row input {
  flex: 1; min-width: 0; font-family: var(--font-body); font-size: var(--text-body);
  padding: 12px 16px; border: 1px solid var(--color-fog); border-radius: 12px; background: var(--color-pure-white);
}
.fallback-row .btn { border-radius: 12px; }

/* Tracing stage */
#screen-tracing { padding: 0; }
.stage { position: absolute; inset: 0; background: var(--color-plum-ink); }
#video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
#overlay { position: absolute; inset: 0; width: 100%; height: 100%; }

.hud-top {
  position: absolute; top: var(--spacing-16); left: 50%; transform: translateX(-50%);
  background: var(--panel); border: var(--line); border-radius: var(--radius-pills);
  padding: 9px 22px; font-family: var(--font-display); font-size: var(--text-body);
  color: var(--color-ink-black); z-index: 3; letter-spacing: -0.3px;
}
.hud-hint {
  position: absolute; bottom: 176px; left: 50%; transform: translateX(-50%);
  background: var(--color-mint-splash); border: var(--line); border-radius: var(--radius-pills);
  padding: 8px 18px; font-size: var(--text-body); font-weight: 700; color: var(--color-ink-black);
  z-index: 3; opacity: 0; transition: opacity var(--dur-base) var(--ease-out);
}
.hud-hint.is-visible { opacity: 1; }

.grownup-controls { position: absolute; top: var(--spacing-16); right: var(--spacing-16); display: flex; gap: 8px; z-index: 4; }
.icon-btn {
  width: 42px; height: 42px; border-radius: var(--radius-buttons);
  background: var(--panel); border: var(--line); color: var(--color-ink-black);
  cursor: pointer; font-size: 18px; display: grid; place-items: center;
  transition: transform var(--dur-fast) var(--ease-spring);
}
.icon-btn:active { transform: scale(0.9); }
.icon-btn .icon-svg { width: 20px; height: 20px; display: block; }
.icon-btn.is-muted .icon-svg { opacity: 0.35; }

/* Word tray */
.word-tray {
  position: absolute; left: 0; right: 0; bottom: 0; min-height: 128px;
  padding: var(--spacing-20) var(--spacing-24);
  background: var(--panel); border-top: var(--line);
  display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; z-index: 3;
}
.tray-letter {
  font-family: var(--font-body); font-weight: 400;
  font-size: clamp(32px, 6vw, 60px); line-height: 1; color: var(--color-fog);
  padding: 0 6px; border-radius: var(--radius-small);
  transition: color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-spring);
}
.tray-letter.is-done { color: var(--color-ink-black); }
.tray-letter.is-active { color: var(--color-ink-black); background: var(--color-mint-splash); }
.tray-space { width: 0.5em; display: inline-block; }

/* Completion / gallery */
#screen-complete { background: var(--color-cream-paper); gap: var(--spacing-32); }
#screen-complete .display { margin-bottom: 0; }
.gallery-card {
  position: relative; background: var(--color-pure-white); border: var(--line);
  border-radius: 24px; padding: var(--spacing-40);
  max-width: min(92vw, 900px);
}
#gallery-canvas { width: 100%; height: auto; display: block; border-radius: var(--radius-small); }
.gallery-caption { font-size: var(--text-caption); color: var(--color-slate); margin-top: var(--spacing-16); }

.hidden { display: none !important; }

/* ---- Responsive --------------------------------------------------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: 1fr; }
  .grownup { grid-template-columns: 1fr; gap: var(--spacing-24); padding: var(--spacing-32); }
  .mascot--hero { position: static; margin-top: var(--spacing-24); }
  .mascot--hero-right { display: none; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .hero { padding-top: var(--spacing-40); }
  .site-footer__logo { display: none; }
}