/* Smilerti website: the app icon's pink paper, booth red, cream and strip colors. */
:root {
  --paper: #FCEEF3;
  --sheet: #FFFFFF;
  --ink: #2A1620;
  --on-ink: #FFFFFF;
  --muted: #6E5862;
  --rule: #F0D6E0;
  --purple: #D62F3A;
  --mark: #FFC2D6;
  --booth: #D62F3A;
  --booth-dark: #7E1219;
  --cream: #F3E4C8;
  --lens: #1B1D2E;
  --soft-blue: #FFF1E0;
  --lemon: #FFD43B;
  --flamingo: #FF6FAE;
  --sky: #4DB5FF;
  --lime: #8EDB4F;
  --lilac: #A98BFF;
  --mint: #34D6B0;
  --tangerine: #FF9A3C;
  --marker-alpha: .55;
  --display: "Nunito", ui-rounded, "SF Pro Rounded", system-ui, sans-serif;
  --body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1A1216; --sheet: #261A20; --ink: #F6EAF0; --on-ink: #1A1216;
    --muted: #BFA9B3; --rule: #3C2A33; --purple: #FF6B74; --mark: #8E2547;
    --soft-blue: #33251B;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--purple); }
:focus-visible { outline: 2px solid var(--purple); outline-offset: 3px; border-radius: 6px; }

.wrap {
  width: 100%;
  max-width: 68rem;
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* Wordmark: "billi" + "rti" on a lilac marker + purple dot, as on the app's home screen. */
.brand {
  font: 900 1.6rem/1 var(--display);
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.brand .rti { background: var(--mark); border-radius: .3em; padding: 0 .12em; }
.brand .dot { color: var(--purple); }

/* Top bar */
.topbar { padding-block: 1.25rem; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.topbar nav { display: flex; gap: .25rem; flex-wrap: wrap; }
.topbar nav a {
  font: 700 .95rem/1 var(--display);
  color: var(--ink);
  text-decoration: none;
  padding: .6rem .8rem;
  border-radius: 999px;
}
.topbar nav a:hover { background: var(--sheet); }
.topbar nav a.lang { border: 1.5px solid var(--rule); }

/* Shared text pieces */
.eyebrow {
  font: 800 .78rem/1 var(--display);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--purple);
  margin: 0;
}
h1, h2, h3 { font-family: var(--display); text-wrap: balance; margin: 0; }
h2 { font-weight: 900; font-size: clamp(1.7rem, 4vw, 2.3rem); line-height: 1.15; letter-spacing: -.01em; }
h3 { font-weight: 800; font-size: 1.15rem; line-height: 1.3; }
.lede { color: var(--muted); font-size: 1.15rem; max-width: 34rem; margin: 0; }
mark {
  background: linear-gradient(transparent 12%, var(--marker, var(--lemon)) 12%, var(--marker, var(--lemon)) 88%, transparent 88%);
  color: inherit;
  padding: 0 .1em;
}

/* Hero */
.hero { padding-block: clamp(1.5rem, 5vw, 4rem) clamp(3rem, 7vw, 6rem); }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.hero-text { display: grid; gap: 1.4rem; min-width: 0; }
.hero h1 { font-weight: 900; font-size: clamp(2.7rem, 7.5vw, 4.6rem); line-height: 1.02; letter-spacing: -.025em; }
.hero h1 span { display: inline-block; }
.hero h1 .c1 { --marker: var(--lemon); }
.hero h1 .c2 { --marker: var(--flamingo); }
.hero h1 .c3 { --marker: var(--sky); }
.hero h1 mark {
  background: linear-gradient(transparent 42%, color-mix(in srgb, var(--marker) 70%, transparent) 42%, color-mix(in srgb, var(--marker) 70%, transparent) 94%, transparent 94%);
  padding: 0 .06em; margin: 0 -.06em;
}
.hero h1 span:nth-child(2) mark { background-position: 0 .04em; }
.cta { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: .6rem;
  background: var(--ink); color: var(--on-ink);
  font: 800 1rem/1 var(--display);
  padding: .95rem 1.4rem; border-radius: 999px;
  text-decoration: none;
}
.badge svg { width: 1.2rem; height: 1.2rem; fill: currentColor; }
.cta .note { color: var(--muted); font-size: .95rem; }

/* Booth illustration: the app icon's camera with a 4-shot strip coming out */
.scene { position: relative; display: grid; justify-items: center; min-width: 0; padding-block: 1rem 2rem; }
.blob { position: absolute; border-radius: 50%; z-index: 0; }
.blob.b1 { width: 80%; aspect-ratio: 1; background: var(--flamingo); opacity: .22; top: 4%; left: 8%; }
.blob.b2 { width: 20%; aspect-ratio: 1; background: var(--lemon); opacity: .6; top: 0; left: 0; }
.blob.b3 { width: 15%; aspect-ratio: 1; background: var(--mint); opacity: .6; bottom: 20%; right: 2%; }
.booth { position: relative; z-index: 1; width: min(100%, 19rem); display: grid; justify-items: center; transform: rotate(-3deg); }
.booth .body {
  position: relative; z-index: 2; width: 100%; aspect-ratio: 1.15;
  background: linear-gradient(#E35F68, var(--booth) 45%);
  border-radius: 2.4rem;
  box-shadow: 0 .55rem 0 var(--booth-dark), 0 1.5rem 3rem -1rem rgba(60, 10, 20, .35);
  display: grid; grid-template-rows: auto 1fr auto; justify-items: center; padding: 1.3rem 1.3rem 1rem;
}
.booth .bulbs { display: flex; gap: .55rem; background: var(--cream); border-radius: .9rem; padding: .7rem 1rem; }
.booth .bulbs i { width: .7rem; height: .7rem; border-radius: 50%; background: var(--tangerine); animation: blink 1.6s infinite steps(1); }
.booth .bulbs i:nth-child(even) { background: var(--flamingo); animation-delay: .8s; }
.booth .lens {
  align-self: center; width: 42%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, #fff 0 7%, transparent 8%), radial-gradient(circle, #3D58D6, #121838 70%);
  border: .7rem solid var(--lens); box-shadow: 0 0 0 .65rem var(--cream);
}
.booth .flash { position: absolute; right: 1.4rem; top: 50%; width: 16%; height: 11%; background: #FFF5E2; border-radius: .45rem; }
.booth .slot { width: 36%; height: .55rem; background: #2B0A0E; border-radius: 1rem; }
.strip {
  position: relative; z-index: 1; margin-top: -.3rem;
  width: 32%; background: #fff; padding: .55rem .5rem .9rem; display: grid; gap: .45rem;
  box-shadow: 0 1rem 2rem -1rem rgba(60, 10, 20, .4);
  animation: print 3.2s ease-out both;
}
.strip span { aspect-ratio: 4 / 3.2; border-radius: .2rem; background: var(--c1); display: grid; place-items: center; }
.strip span::after { content: ""; width: 34%; aspect-ratio: 1; border-radius: 50%; background: rgba(255, 255, 255, .85); }
.strip b { font: 900 .6rem/1 var(--display); text-align: center; color: var(--ink); letter-spacing: .08em; }
@keyframes print { from { clip-path: inset(0 0 100% 0); transform: translateY(-30%); } to { clip-path: inset(0); transform: none; } }
@keyframes blink { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .strip, .booth .bulbs i { animation: none; } }
.booth-names { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }
.booth-names span { border: 1.5px solid var(--rule); border-radius: 999px; padding: .35rem .8rem; font: 700 .88rem/1.2 var(--display); }

/* Sections */
section.block { padding-block: clamp(3rem, 7vw, 5.5rem); }
section.block.alt { background: var(--sheet); }
.block-head { display: grid; gap: .8rem; margin-bottom: 2.5rem; max-width: 40rem; }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; counter-reset: step; }
.step { background: var(--sheet); border-radius: 1.4rem; padding: 1.6rem; display: grid; gap: .6rem; align-content: start; }
section.alt .step { background: var(--paper); }
.step .num {
  width: 2.6rem; height: 2.6rem; border-radius: .8rem;
  display: grid; place-items: center;
  font: 900 1.2rem/1 var(--display); color: rgba(0, 0, 0, .72);
  background: var(--c1);
  transform: rotate(-4deg);
  margin-bottom: .4rem;
}
.step p { margin: 0; color: var(--muted); }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem 2.25rem; }
.feature { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: .3rem 1rem; align-items: start; }
.feature .ico {
  grid-row: span 2;
  width: 2.5rem; height: 2.5rem; border-radius: .75rem;
  display: grid; place-items: center;
  background: var(--c1); color: rgba(0, 0, 0, .72);
}
.feature .ico svg { width: 1.25rem; height: 1.25rem; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.feature p { margin: 0; color: var(--muted); }

.private {
  background: var(--ink); color: var(--on-ink);
  border-radius: 1.75rem;
  padding: clamp(2rem, 5vw, 3.5rem);
  display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 2rem; align-items: center;
}
.private h2 { color: var(--on-ink); }
.private p { margin: 0; opacity: .8; }
.private ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .7rem; font: 700 1.05rem/1.3 var(--display); }
.private li { display: flex; gap: .7rem; align-items: center; }
.private li::before {
  content: ""; flex: none; width: 1.3rem; height: .8rem; border-radius: .25rem;
  background: var(--mint); transform: rotate(-6deg);
}
.private a { color: inherit; }

.langs { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }
.note-line { margin: 1rem 0 0; color: var(--muted); }
.langs span { background: var(--sheet); border-radius: 999px; padding: .4rem .85rem; font: 700 .9rem/1.2 var(--display); }

/* Footer */
.site-footer { padding-block: 2.5rem 3rem; color: var(--muted); font-size: .95rem; }
.site-footer .wrap { display: flex; gap: 1rem 2rem; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.site-footer nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.site-footer a { color: var(--muted); text-decoration: none; font-weight: 600; }
.site-footer a:hover { color: var(--ink); }

/* Document pages: privacy and support */
.doc { padding-block: 1rem 3rem; }
.sheet {
  max-width: 46rem; margin: 0 auto;
  background: var(--sheet);
  border-radius: 1.5rem;
  padding: clamp(1.5rem, 5vw, 3rem);
  display: grid; gap: 2rem;
}
.sheet > header { display: grid; gap: .75rem; }
.sheet h1 { font-weight: 900; font-size: clamp(1.9rem, 5vw, 2.5rem); line-height: 1.1; letter-spacing: -.015em; }
.sheet h2 { font-size: 1.15rem; font-weight: 800; letter-spacing: 0; margin-bottom: .35rem; }
.meta { color: var(--muted); margin: 0; font-size: .95rem; }
nav.switch { display: flex; gap: .5rem; flex-wrap: wrap; }
nav.switch a {
  font: 700 .85rem/1 var(--display); letter-spacing: .04em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  border: 1.5px solid var(--rule); border-radius: 999px; padding: .55rem .9rem;
}
nav.switch a:hover { border-color: var(--purple); }
.summary { background: var(--paper); border-radius: 1rem; padding: 1.25rem 1.4rem; display: grid; gap: .5rem; }
.summary p { margin: 0; }
section.lang-block { display: grid; gap: 1.5rem; scroll-margin-top: 1rem; }
section.lang-block + section.lang-block { border-top: 2px dashed var(--rule); padding-top: 2rem; }
.item p, .item ul { margin: 0; }
.item ul { padding-left: 1.2rem; display: grid; gap: .3rem; margin-top: .35rem; }
.item p + p { margin-top: .5rem; }

.contact {
  display: grid; gap: .4rem;
  background: var(--soft-blue); border-radius: 1rem; padding: 1.25rem 1.4rem;
}
.contact p { margin: 0; }
.contact .addr { font: 800 1.25rem/1.3 var(--display); word-break: break-all; }
.contact .addr a { color: var(--ink); text-decoration: none; }
details.faq { border-top: 1.5px solid var(--rule); padding-block: .9rem; }
details.faq:last-of-type { border-bottom: 1.5px solid var(--rule); }
details.faq summary { cursor: pointer; font: 800 1.05rem/1.35 var(--display); list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; color: var(--purple); font-size: 1.3rem; line-height: 1; }
details.faq[open] summary::after { content: "–"; }
details.faq p { margin: .6rem 0 0; color: var(--muted); }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
  .scene { max-width: 26rem; margin: 0 auto; width: 100%; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .private { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .steps, .features { grid-template-columns: minmax(0, 1fr); }
}
.label { font: 800 .75rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--purple); }

/* Language menu in the top bar, and the language links in the footer */
.langmenu { position: relative; }
.langmenu summary {
  list-style: none; cursor: pointer;
  font: 700 .95rem/1 var(--display); color: var(--ink);
  padding: .6rem .8rem; border: 1.5px solid var(--rule); border-radius: 999px;
}
.langmenu summary::-webkit-details-marker { display: none; }
.langmenu summary::after { content: " ▾"; font-size: .8em; }
.langmenu summary:hover { background: var(--sheet); }
.langmenu ul {
  position: absolute; right: 0; top: calc(100% + .4rem); z-index: 20;
  margin: 0; padding: .4rem; list-style: none; min-width: 10rem;
  background: var(--sheet); border: 1.5px solid var(--rule); border-radius: 1rem;
  box-shadow: 0 12px 30px rgb(0 0 0 / .12);
}
.topbar nav .langmenu a { display: block; padding: .6rem .8rem; border-radius: .6rem; }
.topbar nav .langmenu a:hover { background: var(--paper); }
.topbar nav .langmenu a[aria-current] { color: var(--purple); }
.site-footer .footer-langs { flex-basis: 100%; gap: .5rem 1rem; }

/* App screenshots and printed samples */
.phone {
  position: relative; display: block;
  width: 100%; aspect-ratio: 560 / 1214;
  border-radius: 2.4rem; overflow: hidden;
  background: #111; border: .45rem solid #16101a;
  box-shadow: 0 1.5rem 3rem -1.2rem rgba(60, 10, 20, .45);
}
.phone img { width: 100%; height: 100%; object-fit: cover; }
.print { display: block; box-shadow: 0 1rem 2rem -1rem rgba(60, 10, 20, .45); }

.hero-shots { position: relative; display: flex; justify-content: center; align-items: flex-end; min-width: 0; padding-block: 1rem; }
.hero-shots .phone { width: min(62%, 17rem); transform: rotate(-3deg); z-index: 1; }
.hero-shots .print { width: min(30%, 8.5rem); margin-left: -2.5rem; margin-bottom: -1rem; transform: rotate(6deg); z-index: 2; }

.ritual { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem; }
.ritual figure { margin: 0; display: grid; gap: .9rem; align-content: start; }
.ritual figcaption { display: grid; gap: .25rem; }
.ritual figcaption p { margin: 0; color: var(--muted); }
.ritual .num {
  width: 2rem; height: 2rem; border-radius: .6rem; display: inline-grid; place-items: center;
  font: 900 1rem/1 var(--display); color: rgba(0, 0, 0, .72); background: var(--c1); margin-right: .45rem;
}

.gallery {
  display: flex; gap: 1.1rem; overflow-x: auto; scroll-snap-type: x mandatory;
  padding: .5rem max(20px, env(safe-area-inset-left, 0px)) 1.5rem;
  margin-inline: calc(-1 * max(20px, env(safe-area-inset-left, 0px)));
  scrollbar-width: thin;
}
.gallery figure { margin: 0; flex: 0 0 11.5rem; scroll-snap-align: start; display: grid; gap: .6rem; }
.gallery figcaption { font: 800 .95rem/1.2 var(--display); text-align: center; }
.gallery figcaption small { display: block; font: 600 .78rem/1.3 var(--body); color: var(--muted); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 4.5rem); align-items: center; }
.split .copy { display: grid; gap: 1rem; }
.split .copy p { margin: 0; color: var(--muted); }
.split .visual { display: flex; justify-content: center; }
.split .visual .phone { width: min(70%, 16rem); }

.strips { display: flex; gap: 1rem; overflow-x: auto; padding: .5rem 0 1.5rem; align-items: flex-start; scrollbar-width: thin; }
.strips img { flex: 0 0 9.5rem; width: 9.5rem; }
.strips img:nth-child(odd) { transform: rotate(-1.5deg); }
.strips img:nth-child(even) { transform: rotate(1.5deg) translateY(.8rem); }

.formats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; margin-top: 1.5rem; }
.formats figure { margin: 0; display: grid; gap: .6rem; align-content: start; }
.formats figcaption { font: 800 .95rem/1.3 var(--display); }
.formats figcaption small { display: block; font: 400 .9rem/1.4 var(--body); color: var(--muted); }
.instants { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .6rem; }
.instants img:nth-child(odd) { transform: rotate(-3deg); }
.instants img:nth-child(even) { transform: rotate(3deg); }

.looks { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.looks figure { margin: 0; display: grid; gap: .45rem; }
.looks img { border-radius: .5rem; aspect-ratio: 1080 / 765; object-fit: cover; width: 100%; }
.looks figcaption { font: 800 .9rem/1.2 var(--display); }
.looks figcaption span { font: 600 .75rem/1 var(--body); color: var(--muted); margin-left: .3rem; }

.photo-wide { border-radius: 1.5rem; overflow: hidden; }
.photo-wide img { width: 100%; height: 100%; object-fit: cover; }
.ai-note { font-size: .8rem; color: var(--muted); margin: 1.5rem 0 0; }

@media (max-width: 860px) {
  .ritual { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: minmax(0, 1fr); }
  .split.reverse .visual { order: 2; }
  .formats { grid-template-columns: minmax(0, 1fr); }
  .looks { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}