/* =====================================================================
   Friction Frog: shared design system
   Clean, modern wellness aesthetic. Used by index.html, privacy.html, 404.html.
   ===================================================================== */

/* ---- Design tokens ------------------------------------------------- */
:root {
  /* Brand palette */
  --forest: #36761F;
  --lime: #A1BA3C;
  --mint: #E8F8E1;
  --dark: #1B3714;
  --white: #FFFFFF;
  --accent: #F4B740;

  /* One-line logo swap point (decorative frog mascots reference this) */
  --logo-url: url('frog.png');

  /* Semantic */
  --ink: var(--dark);
  --ink-soft: #3c5a33;
  --surface: var(--white);
  --surface-alt: var(--mint);
  --border: rgba(27, 55, 20, 0.10);

  /* Shape & depth */
  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 10px rgba(27, 55, 20, 0.07);
  --shadow-md: 0 10px 30px rgba(27, 55, 20, 0.10);
  --shadow-lg: 0 20px 50px rgba(27, 55, 20, 0.14);

  /* Layout */
  --maxw: 1140px;
  --nav-h: 68px;

  /* Type */
  --font-head: 'Nunito', system-ui, -apple-system, sans-serif;
  --font-accent: 'Quicksand', system-ui, -apple-system, sans-serif;
}

/* ---- Reset --------------------------------------------------------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: var(--forest); }

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 800;
  color: var(--forest);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

/* ---- Layout helpers ----------------------------------------------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section--alt { background: var(--surface-alt); }
.section__head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 14px; }
.section__head p { color: var(--ink-soft); font-size: 1.05rem; }
.eyebrow {
  font-family: var(--font-accent); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.12em; font-size: 0.8rem; color: var(--forest);
  display: inline-block; margin-bottom: 10px;
}

/* ---- Logo mascot (one-line swap via --logo-url) -------------------- */
.logo {
  display: inline-block;
  background: var(--logo-url) center / contain no-repeat;
  /* TEMP: frog.png is a 32px pixel sprite, so render crisp instead of blurry when enlarged.
     Remove this line when the new hi-res logo replaces frog.png. */
  image-rendering: pixelated;
}
.logo--mark { width: 40px; height: 40px; }
.logo--hero { width: 128px; height: 128px; } /* 4× the 32px source for clean pixels */
.logo--cta  { width: 96px;  height: 96px; }  /* 3× */

/* ---- Buttons ------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-accent); font-weight: 700; font-size: 1rem;
  padding: 13px 24px; border-radius: 999px; border: 0; cursor: pointer;
  text-decoration: none; transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--forest); color: var(--white); box-shadow: var(--shadow-sm); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); background: #2e6519; }
.btn--accent { background: var(--accent); color: var(--dark); box-shadow: var(--shadow-sm); }
.btn--accent:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--forest); border: 2px solid rgba(54,118,31,.25); }
.btn--ghost:hover { background: var(--mint); }
.btn--sm { padding: 9px 18px; font-size: .92rem; }

/* ---- App Store badge (primary CTA) + graceful fallback ------------- */
.appstore-badge {
  display: inline-block; line-height: 0;
  /* Apple clear-space: ~10% of badge height padding all round */
  padding: 6px;
  border-radius: 12px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.appstore-badge:hover { transform: translateY(-2px); }
.appstore-badge img { height: 54px; width: auto; }

/* JS-rendered fallback when the SVG is missing; looks like Apple's badge */
.appstore-badge--fallback {
  display: inline-flex; align-items: center; gap: 10px;
  height: 54px; padding: 0 18px; background: #000; color: #fff;
  border-radius: 11px; font-family: var(--font-head); text-decoration: none;
  box-shadow: var(--shadow-sm);
}
.appstore-badge--fallback .apple-glyph { font-size: 26px; line-height: 1; }
.appstore-badge--fallback .badge-txt { display: flex; flex-direction: column; line-height: 1.15; }
.appstore-badge--fallback .badge-txt small { font-size: 10px; letter-spacing: .02em; opacity: .9; }
.appstore-badge--fallback .badge-txt b { font-size: 19px; font-weight: 600; }

/* ---- Navigation --------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.nav__brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.nav__brand .wordmark {
  font-family: var(--font-head); font-weight: 800; font-size: 1.18rem; color: var(--forest);
  letter-spacing: -0.01em;
}
.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__links a {
  font-family: var(--font-accent); font-weight: 600; font-size: .96rem;
  color: var(--ink-soft); text-decoration: none; padding: 8px 12px; border-radius: 999px;
  transition: background .15s ease, color .15s ease;
}
.nav__links a:hover { background: var(--mint); color: var(--forest); }
.nav__links a.active { color: var(--forest); background: var(--mint); }
.nav__cta { display: inline-flex; align-items: center; gap: 12px; }

.nav__toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: 8px;
  color: var(--forest);
}
.nav__toggle svg { width: 26px; height: 26px; }

/* ---- Hero --------------------------------------------------------- */
.hero {
  background: linear-gradient(180deg, var(--mint) 0%, rgba(232, 248, 225, 0) 100%);
  padding: 72px 0 88px;
}
.hero__grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.hero__brand { display: inline-flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.hero__brand .wordmark {
  font-family: var(--font-head); font-weight: 800; font-size: 1.5rem; color: var(--forest);
}
.hero h1 { font-size: clamp(36px, 5.4vw, 60px); margin-bottom: 18px; }
.hero__sub { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--ink-soft); max-width: 30ch; margin-bottom: 28px; }
.hero__sub--tight { display: none; }   /* mobile-only shorter line (shown in the responsive block) */
.hero__cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.hero__trust { font-family: var(--font-accent); font-weight: 600; color: var(--ink-soft); font-size: .95rem; }
.hero__media { display: flex; justify-content: center; }

/* ---- Phone mockup ------------------------------------------------- */
.phone {
  position: relative; width: 280px;
  background: #0e0e12; border-radius: 44px; padding: 11px;
  box-shadow: var(--shadow-lg);
}
/* No fake notch: the screen recordings already include the Dynamic Island. */
.phone__screen {
  position: relative; width: 100%; aspect-ratio: 1206 / 2622; /* match the recording exactly */
  border-radius: 34px; overflow: hidden;
  background: linear-gradient(160deg, var(--mint), #cfe9c2);
  display: flex; align-items: center; justify-content: center;
}
/* placeholder shown behind the video; visible if the video/poster is missing */
.phone__placeholder {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px; text-align: center;
  color: var(--forest); font-family: var(--font-accent); font-weight: 700;
}
.phone__placeholder .logo { width: 64px; height: 64px; opacity: .8; }
.phone__placeholder small { color: var(--ink-soft); font-weight: 600; }
/* Fill the screen, then scale up very slightly to cover the rounded edges
   with no hairline background bleed. Anchored to the top (transform-origin),
   so the space above the Dynamic Island is preserved exactly as recorded and
   the tiny crop falls at the bottom. Horizontal growth stays symmetric. */
.phone__screen video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; z-index: 1;
  transform: scale(1.02);
  transform-origin: center top;
}

/* Fake hardware buttons (decorative) — left: action + volume, right: side button */
.phone__btn { position: absolute; background: #0a0a0d; width: 3px; }
.phone__btn--silent  { left: -3px;  top: 17%; height: 26px; border-radius: 2px 0 0 2px; }
.phone__btn--volup   { left: -3px;  top: 25%; height: 50px; border-radius: 2px 0 0 2px; }
.phone__btn--voldown { left: -3px;  top: 36%; height: 50px; border-radius: 2px 0 0 2px; }
.phone__btn--power   { right: -3px; top: 24%; height: 72px; border-radius: 0 2px 2px 0; }

/* ---- Problem / empathy -------------------------------------------- */
.empathy { text-align: center; }
.empathy p { font-size: clamp(1.15rem, 2.2vw, 1.5rem); max-width: 720px; margin: 0 auto; color: var(--ink); line-height: 1.55; }
.empathy strong { color: var(--forest); }

/* ---- Cards (features / why) --------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card__icon {
  width: 56px; height: 56px; border-radius: 16px; background: var(--mint);
  display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 18px;
}
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 1rem; }
.card__img { margin-top: 18px; border-radius: var(--radius-sm); }

/* ---- How it works (steps) ----------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; counter-reset: step; }
.step { position: relative; padding: 32px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.step__num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--forest); color: var(--white);
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem;
  margin-bottom: 16px;
}
.step h3 { font-size: 1.2rem; margin-bottom: 8px; }
.step p { color: var(--ink-soft); }
.note {
  text-align: center; margin-top: 36px; color: var(--ink-soft); font-size: .95rem;
  font-family: var(--font-accent); font-weight: 600;
}

/* ---- Demo section ------------------------------------------------- */
.demo__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.demo__copy h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 14px; }
.demo__copy p { color: var(--ink-soft); font-size: 1.1rem; }

/* ---- Final CTA band ----------------------------------------------- */
.cta-band { background: var(--forest); color: var(--white); text-align: center; }
.cta-band h2 { color: var(--white); font-size: clamp(28px, 4.2vw, 44px); margin-bottom: 28px; }
.cta-band .logo { margin: 0 auto 22px; }
.cta-band__inner { display: flex; flex-direction: column; align-items: center; }

/* ---- Contact ------------------------------------------------------ */
.contact { text-align: center; }
.contact p { max-width: 600px; margin: 0 auto 22px; color: var(--ink-soft); font-size: 1.1rem; }
.email-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-accent); font-weight: 700; font-size: 1.05rem;
  color: var(--forest); background: var(--mint); padding: 12px 22px; border-radius: 999px;
  text-decoration: none; transition: transform .18s ease, box-shadow .18s ease;
}
.email-link:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* ---- Footer ------------------------------------------------------- */
.footer { background: var(--dark); color: var(--mint); padding: 56px 0 40px; }
.footer__grid { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
.footer__made { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }
.footer__links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer__links a { color: var(--mint); text-decoration: none; font-family: var(--font-accent); font-weight: 600; opacity: .9; }
.footer__links a:hover { opacity: 1; text-decoration: underline; }
.footer__social { display: flex; gap: 16px; }
.footer__social a { color: var(--mint); text-decoration: none; opacity: .9; font-family: var(--font-accent); font-weight: 600; }
.footer__social a:hover { opacity: 1; }
.footer__legal { width: 100%; margin-top: 28px; padding-top: 22px; border-top: 1px solid rgba(232,248,225,.15); font-size: .88rem; opacity: .75; }

/* ---- Sticky / floating download button ---------------------------- */
.sticky-cta {
  position: fixed; left: 50%; bottom: 22px; transform: translate(-50%, 140%);
  z-index: 200; opacity: 0; transition: transform .35s cubic-bezier(.2,.8,.2,1), opacity .25s ease;
  box-shadow: var(--shadow-lg);
}
.sticky-cta.visible { transform: translate(-50%, 0); opacity: 1; }
.sticky-cta .btn--accent { padding: 14px 26px; font-size: 1.02rem; }

/* ---- Reveal-on-scroll animation ----------------------------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---- Gentle frog idle --------------------------------------------- */
.logo--hero, .logo--cta { animation: frog-idle 4.5s ease-in-out infinite; }
@keyframes frog-idle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ---- Simple inner pages (privacy / 404) --------------------------- */
.page { max-width: 760px; margin: 0 auto; padding: 64px 24px 80px; }
.page h1 { font-size: clamp(30px, 5vw, 44px); margin-bottom: 8px; }
.page .updated { color: var(--ink-soft); font-family: var(--font-accent); font-weight: 600; margin-bottom: 36px; }
.page h2 { font-size: 1.4rem; margin: 36px 0 12px; }
.page p, .page li { color: var(--ink); margin-bottom: 14px; }
.page ul { padding-left: 22px; }
.back-home { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 28px; text-decoration: none; font-family: var(--font-accent); font-weight: 700; color: var(--forest); }

.notfound { min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 40px 24px; }
.notfound .logo { width: 128px; height: 128px; margin-bottom: 24px; }

/* Lighter/smaller no-pressure copy (support page) */
.fineprint { color: var(--ink-soft); font-size: .92rem; opacity: .85; }
.notfound h1 { font-size: clamp(28px, 5vw, 44px); margin-bottom: 12px; }
.notfound p { color: var(--ink-soft); font-size: 1.1rem; margin-bottom: 28px; }

/* ---- Responsive --------------------------------------------------- */
@media (max-width: 880px) {
  .demo__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__sub { max-width: none; }
  .demo__media { display: flex; justify-content: center; }
  .cards, .steps { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }

  /* ---- Mobile hero: a calmer, less-busy layout. A properly-shaped phone
     up top, a breath of open space, then the headline + App Store badge
     pinned toward the bottom so they're in view on load. Page still scrolls. */
  .hero { padding: 14px 0 32px; }
  .hero__grid {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    min-height: calc(100vh - var(--nav-h) - 46px);   /* fallback for old browsers */
    min-height: calc(100svh - var(--nav-h) - 46px);  /* stable: ignores dynamic toolbars */
  }
  .hero__media { order: -1; }
  .hero__copy {
    width: 100%;
    margin-top: auto;         /* push the copy + download button toward the bottom */
  }
  .hero__brand { display: none; }             /* remove the extra wordmark under the phone */
  .hero__sub--full { display: none; }         /* swap in the tighter one-liner on mobile */
  .hero__sub--tight { display: block; margin-bottom: 20px; }
  .hero h1 { font-size: clamp(28px, 7vw, 40px); margin-bottom: 12px; }

  /* Phone keeps its true proportions (width-driven, so the screen matches the
     recording and nothing is cropped). Width is clamped by the available height
     so the copy below always stays in view; internal radii/buttons scaled down
     to read correctly at this smaller size. */
  .hero__media .phone {
    width: min(200px, calc((100svh - 336px) * 0.44));
    min-width: 132px;
    padding: 6px;
    border-radius: 24px;
  }
  .hero__media .phone__screen { border-radius: 18px; }
  .hero__media .phone__btn { width: 2px; }
  .hero__media .phone__btn--silent  { height: 14px; }
  .hero__media .phone__btn--volup   { height: 30px; }
  .hero__media .phone__btn--voldown { height: 30px; }
  .hero__media .phone__btn--power   { height: 44px; }

  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--border);
    padding: 8px; box-shadow: var(--shadow-md);
    display: none;
  }
  .nav__links.open { display: flex; }
  .nav__links a { padding: 14px 16px; }
  .nav .desktop-download { display: none; }
}

@media (min-width: 881px) {
  .nav__links { display: flex !important; }
}

@media (max-width: 520px) {
  .footer__grid { flex-direction: column; align-items: flex-start; }
  /* Hero phone now sizes itself by height (above); only the demo phone
     keeps a fixed width on small screens. */
  .demo__media .phone { width: 240px; }
}

/* ---- Reduced motion ----------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .sticky-cta.visible { transform: translate(-50%, 0); }
}