/* ==========================================================================
   OthiByte — landing page
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

:root {
  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-script: 'Caveat', cursive;

  --oy-bg: #0a0c11;
  --oy-bg-soft: #12151d;
  --oy-surface: #171b25;
  --oy-line: rgba(255,255,255,.09);
  --oy-text: #f4f5f7;
  --oy-text-dim: #9aa1af;
  --oy-accent: #ffb454;
  --oy-accent-ink: #241a08;
  --oy-silver: #b9c0cf;

  --container: 1160px;
  --space-section: clamp(64px, 10vw, 120px);

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --shadow-soft: 0 20px 45px -20px rgba(0,0,0,.45);
}

html, body { background: var(--oy-bg); }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--oy-text);
  background: var(--oy-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

@media (min-width: 640px) {
  .wrap { padding-inline: 32px; }
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--oy-accent);
  color: var(--oy-accent-ink);
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 200;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-block: 14px;
  background: rgba(10,12,17,.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--oy-line);
  background: rgba(10,12,17,.88);
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}
.brand__mark { border-radius: 50%; }

.site-nav { display: flex; gap: clamp(14px, 3vw, 28px); font-size: .92rem; }
.site-nav a { color: var(--oy-text-dim); transition: color .2s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--oy-text); }

/* ---------- Section scaffolding ---------- */

section { position: relative; }

.eyebrow {
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--oy-accent);
  margin: 0 0 12px;
}
.eyebrow--dark { color: var(--acc, var(--oy-accent)); }

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

.hero {
  padding-top: clamp(48px, 8vw, 88px);
  padding-bottom: clamp(56px, 9vw, 96px);
  overflow: clip;
  background: var(--oy-bg);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: -10% -10%;
  background-image:
    linear-gradient(var(--oy-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--oy-line) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: .35;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, black 30%, transparent 75%);
  will-change: transform;
}

.hero__glow {
  position: absolute;
  top: -20%;
  left: 50%;
  width: 900px;
  max-width: 160vw;
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(255,180,84,.16), transparent 60%);
  will-change: transform;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__logo {
  border-radius: 50%;
  margin-bottom: 22px;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,.5));
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5.4vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 0 0 18px;
  max-width: 16ch;
}

.hero__subtitle {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--oy-text-dim);
  max-width: 46ch;
  margin: 0 0 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .98rem;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn--primary {
  background: var(--oy-accent);
  color: var(--oy-accent-ink);
  box-shadow: 0 14px 34px -12px rgba(255,180,84,.55);
  transition: transform .25s ease, box-shadow .25s ease;
}
.btn--primary:hover, .btn--primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px -12px rgba(255,180,84,.7);
}
.btn__arrow { display: inline-block; animation: bob 2.2s ease-in-out infinite; }
@keyframes bob { 0%,100%{transform:translateY(0)} 50%{transform:translateY(4px)} }

.btn--outline {
  background: transparent;
  border-color: var(--acc, var(--oy-accent));
  color: var(--ink, var(--oy-text));
  transition: background .2s ease, transform .2s ease, color .2s ease;
}
.btn--outline:hover, .btn--outline:focus-visible {
  background: var(--acc, var(--oy-accent));
  color: #0a0c11;
  transform: translateY(-2px);
}
.btn__arrow-ext { display: inline-block; }

.btn--disabled,
.btn--disabled:hover {
  background: transparent;
  border-style: dashed;
  border-color: var(--line);
  color: var(--text-dim, var(--oy-text-dim));
  cursor: not-allowed;
  transform: none;
}
.btn__lock { font-size: .85em; }

.app-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 26px 0 0;
}
.app-cta--column { flex-direction: column; align-items: center; }
.app-cta__note {
  margin: 10px 0 0;
  font-size: .8rem;
  color: var(--text-dim, var(--oy-text-dim));
  text-align: center;
  max-width: 40ch;
}

/* ---------- Device mockups ---------- */

.devices {
  position: relative;
  width: 100%;
  max-width: 620px;
  margin: 56px auto 44px;
  padding: 34px 14px 26px;
}

.device {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #23262f, #14161c 60%);
  padding: 12px;
  box-shadow: var(--shadow-soft), 0 0 0 1px rgba(255,255,255,.05);
}

.device--tablet {
  width: 68%;
  margin-inline: auto;
  aspect-ratio: 4 / 3;
  transform: rotate(-3deg) translateX(-4%);
  z-index: 1;
}

.device--phone {
  position: absolute;
  right: 4%;
  bottom: -6%;
  width: 34%;
  aspect-ratio: 9 / 19.5;
  transform: rotate(4deg);
  z-index: 2;
  padding: 10px 8px;
}

.device__notch {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 34%;
  height: 16px;
  background: #14161c;
  border-radius: 0 0 12px 12px;
  z-index: 2;
}

.device__screen {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: calc(var(--radius-lg) - 12px);
  overflow: hidden;
  background: var(--bg, #0b0d12);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.06);
}
.device--phone .device__screen { border-radius: calc(var(--radius-lg) - 8px); }

.device__screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.device--airim, .device--airim-player { box-shadow: var(--shadow-soft), 0 0 0 1px rgba(34,197,94,.35), 0 0 40px -14px rgba(34,197,94,.45); }
.device--inkonsent { box-shadow: var(--shadow-soft), 0 0 0 1px rgba(91,59,99,.4), 0 0 40px -18px rgba(91,59,99,.5); }
.device--flexmenu { box-shadow: var(--shadow-soft), 0 0 0 1px rgba(255,138,61,.4), 0 0 40px -16px rgba(255,138,61,.5); }

/* Callouts */

.callout {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 168px;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: .78rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--oy-text);
  background: rgba(23,27,37,.82);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 14px 30px -14px rgba(0,0,0,.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 3;
}
.callout__icon { font-size: 1.15rem; line-height: 1; flex: none; }

.callout--1 { top: 6%; left: -2%; }
.callout--2 { top: 46%; right: -4%; }
.callout--3 { bottom: -2%; left: 2%; }

@media (max-width: 480px) {
  .callout { max-width: 132px; font-size: .72rem; padding: 8px 10px; gap: 8px; }
  .callout__icon { font-size: 1rem; }
  .devices { padding-inline: 4px; }
}

/* Light-theme (InkConsent) callouts */
.app-block--inkonsent .callout {
  background: rgba(248,245,240,.92);
  border-color: rgba(27,26,25,.12);
  color: var(--ink);
}

/* ---------- Benefits row ---------- */

.benefits {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .92rem;
  font-weight: 500;
  color: var(--oy-text-dim);
}
.benefits li { display: flex; align-items: center; gap: 8px; }
.benefits__icon { font-size: 1.15rem; }

.benefits--dark { color: var(--text-dim, var(--oy-text-dim)); }

/* ---------- Section intro ---------- */

.section-intro {
  padding-block: clamp(48px, 8vw, 80px) 8px;
  text-align: center;
  background: var(--oy-bg);
}
.section-intro__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.25;
  max-width: 26ch;
  margin: 0 auto;
  letter-spacing: -.01em;
}

/* ---------- App blocks ---------- */

.app-block {
  padding-block: var(--space-section);
  color: var(--ink);
  overflow: clip;
}
.app-block__bg { position: absolute; inset: 0; z-index: 0; background: var(--bg); }
.app-block__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.app-block__logo { border-radius: 24%; margin-bottom: 18px; box-shadow: 0 14px 34px -14px rgba(0,0,0,.5); }
.app-block__logo-pair { display: flex; gap: 14px; margin-bottom: 18px; }
.app-block__logo--sm { width: 64px; height: 64px; border-radius: 22%; }

.app-block__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.8vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -.015em;
  max-width: 18ch;
  margin: 0 0 16px;
  color: var(--ink);
}

.app-block__subtitle {
  font-size: clamp(1rem, 1.4vw, 1.08rem);
  color: var(--text-dim);
  max-width: 48ch;
  margin: 0 0 8px;
}

/* Per-app theme tokens */
.app-block--inkonsent {
  --bg: #ede8e2;
  --ink: #1b1a19;
  --text-dim: #6e665d;
  --acc: #5b3b63;
  --acc-tint: #e5dae8;
  --line: #c7beb2;
}

.app-block--flexmenu {
  --bg: #260c09;
  --bg-2: #3a120c;
  --ink: #f6ede4;
  --text-dim: #cdb6a4;
  --acc: #ff8a3d;
  --acc-2: #e8631a;
  --line: rgba(246,237,228,.14);
}

.app-block--airim {
  --bg: #060a18;
  --bg-2: #0e1525;
  --ink: #f3f7fc;
  --text-dim: #8395b4;
  --acc: #22c55e;
  --acc-2: #f5b301;
  --line: #22304e;
}

.app-block--flexmenu .eyebrow,
.app-block--airim .eyebrow { color: var(--acc); }

/* ---------- Pricing ---------- */

.pricing {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  width: 100%;
  max-width: 760px;
  margin: 28px auto 0;
}
@media (min-width: 720px) {
  .pricing { grid-template-columns: repeat(3, 1fr); }
}
.pricing--single { max-width: 340px; }
.pricing--two { max-width: 560px; }
@media (min-width: 720px) {
  .pricing--two { grid-template-columns: repeat(2, 1fr); }
}

.pricing__card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  background: color-mix(in srgb, var(--ink) 4%, transparent);
}
.app-block--inkonsent .pricing__card { background: #f8f5f0; }
.app-block--flexmenu .pricing__card,
.app-block--airim .pricing__card { background: rgba(255,255,255,.04); }

.pricing__card--highlight {
  border-color: var(--acc);
  box-shadow: 0 16px 34px -18px var(--acc);
  position: relative;
}
.pricing__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--acc);
  color: #0a0c11;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}
.pricing__name { margin: 0 0 8px; font-weight: 600; font-size: .95rem; }
.pricing__price { margin: 0; font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; color: var(--ink); }
.pricing__price span { font-size: .95rem; font-weight: 500; color: var(--text-dim); }
.pricing__note { margin: 10px 0 0; font-size: .82rem; color: var(--text-dim); }
.pricing__enterprise { margin: 18px 0 0; font-size: .92rem; color: var(--text-dim); }
.pricing__enterprise a { color: var(--acc); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- About ---------- */

.about { padding-block: var(--space-section); background: var(--oy-bg); }
.about__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
  text-align: center;
}
.about__photo {
  width: min(240px, 60vw);
  height: auto;
  flex: none;
  align-self: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft), 0 0 0 1px rgba(255,255,255,.06);
}
.about__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.22;
  margin: 0 0 16px;
  letter-spacing: -.01em;
}
.about__body {
  color: var(--oy-text-dim);
  max-width: 52ch;
  margin: 0 auto 14px;
  font-size: 1.02rem;
}

@media (min-width: 760px) {
  .about__inner { flex-direction: row; text-align: left; align-items: flex-start; }
  .about__body { margin-inline: 0; }
}

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

.faq {
  padding-block: var(--space-section);
  background: var(--oy-bg);
  text-align: center;
}
.faq__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  margin: 0 0 32px;
  letter-spacing: -.01em;
}
.faq__list {
  max-width: 720px;
  margin-inline: auto;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq__item {
  border: 1px solid var(--oy-line);
  border-radius: var(--radius-md);
  background: var(--oy-surface);
  overflow: hidden;
}
.faq__item + .faq__item { margin-top: 0; }
.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__chevron { flex: none; color: var(--oy-accent); transition: transform .25s ease; }
.faq__item[open] .faq__chevron { transform: rotate(180deg); }
.faq__a { padding: 0 20px 20px; }
.faq__a p { margin: 0; color: var(--oy-text-dim); font-size: .95rem; line-height: 1.55; max-width: 62ch; }

/* ---------- Install guide ---------- */

.install-guide {
  padding-block: var(--space-section);
  background: var(--oy-bg-soft);
  text-align: center;
  border-top: 1px solid var(--oy-line);
  border-bottom: 1px solid var(--oy-line);
}
.install-guide__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  margin: 0 0 12px;
  letter-spacing: -.01em;
}
.install-guide__subtitle {
  color: var(--oy-text-dim);
  max-width: 52ch;
  margin: 0 auto 40px;
}

.install-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  max-width: 820px;
  margin-inline: auto;
  text-align: left;
}
@media (min-width: 700px) {
  .install-cols { grid-template-columns: 1fr 1fr; }
}

.install-col {
  border: 1px solid var(--oy-line);
  border-radius: var(--radius-lg);
  background: var(--oy-surface);
  padding: 26px 24px;
}
.install-col__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 20px;
  color: var(--oy-accent);
}
.install-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.install-steps li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.install-steps p { margin: 0; font-size: .95rem; color: var(--oy-text); line-height: 1.45; padding-top: 2px; }
.install-steps__icon {
  flex: none;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,180,84,.12);
  color: var(--oy-accent);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .88rem;
}

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

.site-footer {
  background: var(--oy-bg-soft);
  border-top: 1px solid var(--oy-line);
  padding-block: 44px 30px;
  text-align: center;
}
.site-footer__logo { border-radius: 50%; margin: 0 auto 14px; }
.site-footer__tagline { color: var(--oy-text-dim); margin: 0 0 24px; font-size: .95rem; }

.site-footer__social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 22px;
}
.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--oy-line);
  color: var(--oy-text);
  font-weight: 600;
  font-size: .92rem;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}
.social-btn:hover, .social-btn:focus-visible {
  color: var(--oy-accent);
  border-color: var(--oy-accent);
  transform: translateY(-1px);
}

.site-footer__contacts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 26px;
  margin-bottom: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--oy-line);
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--oy-text-dim);
  font-size: .92rem;
  font-weight: 500;
  transition: color .2s ease;
}
.contact-link:hover, .contact-link:focus-visible { color: var(--oy-accent); }

.site-footer__copy { color: var(--oy-text-dim); font-size: .8rem; margin: 0; }

/* ---------- Reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s cubic-bezier(.16,.8,.3,1), transform .7s cubic-bezier(.16,.8,.3,1);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}