/* vdown-helper website. Same palette and fonts as the extension (src/styles/theme.css); everything is served from this site. */
@font-face {
  font-family: 'Inter Variable';
  font-weight: 100 900;
  font-display: swap;
  src: url('fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-weight: 400;
  font-display: swap;
  src: url('fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-weight: 700;
  font-display: swap;
  src: url('fonts/jetbrains-mono-latin-700-normal.woff2') format('woff2');
}

:root {
  --void: #080a12;
  --surface: #101522;
  --surface-2: #161d2f;
  --neon: #00f5ff;
  --magenta: #ff2bd6;
  --acid: #b7ff3c;
  --fg: #f2f5ff;
  --muted: #8994aa;
  --soft: #aab3c5;
  --line: rgba(255, 255, 255, 0.08);
  --sans: 'Inter Variable', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
body {
  margin: 0;
  background: var(--void);
  color: var(--fg);
  font: 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  letter-spacing: -0.03em;
  line-height: 1.08;
}
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.narrow {
  max-width: 820px;
}
.center {
  text-align: center;
}
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 16px;
  top: 16px;
  z-index: 10;
  background: var(--neon);
  color: var(--void);
  padding: 8px 12px;
  border-radius: 8px;
}
:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 6px;
}

/* nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(8, 10, 18, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 700 15px var(--mono);
  text-decoration: none;
}
.nav nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
  font-size: 14px;
  color: var(--soft);
}
.nav nav a,
.lang {
  text-decoration: none;
}
.nav nav a:hover,
.lang:hover {
  color: var(--fg);
}
.lang {
  font: 12px var(--mono);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 10px;
  background: var(--neon);
  color: var(--void);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  box-shadow:
    0 0 0 1px rgba(0, 245, 255, 0.4),
    0 10px 30px rgba(0, 245, 255, 0.22);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}
.btn:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.6),
    0 14px 40px rgba(0, 245, 255, 0.35);
}
.btn-sm {
  min-height: 36px;
  padding: 0 14px;
  font-size: 14px;
}
.btn-lg {
  min-height: 54px;
  padding: 0 28px;
  font-size: 17px;
  border-radius: 12px;
}
.btn-ghost {
  background: transparent;
  color: var(--fg);
  box-shadow: inset 0 0 0 1px var(--line);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}
.link {
  color: var(--neon);
  text-decoration: none;
  font-weight: 600;
}

/* hero */
.hero {
  position: relative;
  padding: 72px 0 40px;
  background:
    radial-gradient(900px 600px at 0% 0%, rgba(0, 245, 255, 0.1), transparent 60%),
    radial-gradient(900px 600px at 100% 60%, rgba(255, 43, 214, 0.1), transparent 60%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 30% 30%, #000 10%, transparent 70%);
  pointer-events: none;
}
.hero-in {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(183, 255, 60, 0.35);
  background: rgba(183, 255, 60, 0.06);
  color: var(--acid);
  font: 12px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 10px var(--acid);
}
.hero h1 {
  font-size: clamp(38px, 4.3vw, 60px);
  font-weight: 800;
  letter-spacing: -0.045em;
}
.hl {
  background: linear-gradient(90deg, var(--neon), var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  font-size: 19px;
  color: var(--soft);
  margin: 22px 0 0;
  max-width: 560px;
}
.ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.note {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.soon {
  color: var(--soft);
}
.hero-art img {
  width: 122%;
  max-width: none;
  margin: -40px 0 -40px -6%;
}

/* proof */
.proof {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(16, 21, 34, 0.6);
}
.proof-in {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.proof-in div {
  padding: 26px 16px;
  text-align: center;
  border-left: 1px solid var(--line);
}
.proof-in div:first-child {
  border-left: 0;
}
.proof b {
  display: block;
  font: 700 34px var(--mono);
  color: var(--neon);
}
.proof span {
  font-size: 14px;
  color: var(--soft);
}

/* pain */
.pain {
  padding: 110px 0 40px;
  text-align: center;
}
.pain h2,
.grid-sec h2,
.privacy h2,
.install h2,
.faq h2,
.final h2 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
}
.pain p {
  color: var(--soft);
  font-size: 19px;
  margin: 20px auto 0;
  max-width: 680px;
}

/* features */
.features {
  padding: 60px 0;
}
.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
  padding: 56px 0;
}
.row.flip .copy {
  order: 2;
}
.eyebrow {
  font: 13px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--neon);
  margin: 0 0 14px;
}
.row h3 {
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 800;
}
.row p {
  color: var(--soft);
  font-size: 18px;
  margin: 18px 0 0;
  max-width: 500px;
}
.ui {
  margin: 0;
  justify-self: center;
  width: min(100%, 420px);
  border-radius: 16px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0, 245, 255, 0.35),
    0 30px 80px rgba(0, 0, 0, 0.55),
    0 0 60px rgba(0, 245, 255, 0.12);
}
.ui-tall {
  max-height: 640px;
}

/* grid */
.grid-sec {
  padding: 80px 0;
}
.grid {
  list-style: none;
  padding: 0;
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.grid li,
.pillars li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
}
.grid h4,
.pillars h4 {
  font-size: 17px;
  letter-spacing: -0.01em;
}
.grid p,
.pillars p {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--soft);
}

/* privacy */
.privacy {
  padding: 100px 0;
  background:
    radial-gradient(800px 400px at 50% 0%, rgba(255, 43, 214, 0.08), transparent 70%),
    linear-gradient(var(--void), #0a0d18);
  border-top: 1px solid var(--line);
}
.pillars {
  list-style: none;
  padding: 0;
  margin: 44px 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.pillars h4 {
  color: var(--acid);
}
.limits {
  margin: 40px auto 0;
  max-width: 820px;
  border: 1px solid rgba(255, 77, 109, 0.35);
  background: rgba(255, 77, 109, 0.04);
  border-radius: 14px;
  padding: 26px 30px;
}
.limits h3 {
  font-size: 20px;
  color: #ff8aa0;
}
.limits ul {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--soft);
}
.limits li + li {
  margin-top: 8px;
}

/* install */
.install {
  padding: 100px 0;
}
.store {
  margin: 36px auto 0;
  max-width: 520px;
  text-align: center;
}
.store p {
  color: var(--soft);
}
.steps {
  list-style: none;
  padding: 0;
  margin: 36px 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.steps li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 24px 24px;
}
.steps .n {
  display: inline-flex;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  font: 700 14px var(--mono);
  color: var(--void);
  background: var(--neon);
}
.steps h4 {
  margin-top: 14px;
  font-size: 19px;
}
.steps p {
  color: var(--soft);
  font-size: 15px;
  margin: 8px 0 16px;
}
.steps code {
  font: 13px var(--mono);
  color: var(--neon);
  background: rgba(0, 245, 255, 0.07);
  border: 1px solid rgba(0, 245, 255, 0.25);
  padding: 4px 8px;
  border-radius: 6px;
}

/* desktop app downloads */
.desktop {
  padding: 40px 0 100px;
}
.narrow-lead {
  max-width: 720px;
  margin: 14px auto 0;
}
.dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 36px 0 24px;
}
.dl-os {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 24px 24px;
}
.dl-os h3 {
  font-size: 21px;
}
.dl-os .note {
  margin: 6px 0 18px;
}
.dl-more {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 16px 0 0;
  font-size: 14px;
}

/* faq */
.faq {
  padding: 80px 0;
}
.faq h2 {
  margin-bottom: 30px;
}
details {
  border-bottom: 1px solid var(--line);
  padding: 18px 4px;
}
summary {
  cursor: pointer;
  font-weight: 650;
  font-size: 18px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: '+';
  font: 400 22px var(--mono);
  color: var(--neon);
  line-height: 1;
}
details[open] summary::after {
  content: '–';
}
details p {
  color: var(--soft);
  margin: 12px 0 0;
}

/* final */
.final {
  padding: 110px 0 120px;
  background: radial-gradient(700px 360px at 50% 100%, rgba(0, 245, 255, 0.12), transparent 70%);
}
.final .lead {
  margin: 18px auto 30px;
}

/* footer */
.foot {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--muted);
  font-size: 14px;
}
.foot-in {
  display: grid;
  gap: 14px;
}
.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.foot a {
  text-decoration: none;
  color: var(--soft);
}
.foot a:hover {
  color: var(--fg);
}
.foot p {
  margin: 0;
}
.clean {
  font: 12px var(--mono);
  color: var(--acid);
}

/* small screens */
@media (max-width: 960px) {
  .nav nav {
    display: none;
  }
  .lang {
    margin-left: auto;
  }
  .hero-in,
  .row {
    grid-template-columns: 1fr;
  }
  .row.flip .copy {
    order: 0;
  }
  .hero-art img {
    width: 100%;
    margin: 0;
  }
  .proof-in {
    grid-template-columns: repeat(2, 1fr);
  }
  .proof-in div:nth-child(3) {
    border-left: 0;
  }
  .grid,
  .pillars {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps,
  .dl {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 560px) {
  body {
    font-size: 16px;
  }
  .hero {
    padding-top: 44px;
  }
  .grid,
  .pillars {
    grid-template-columns: 1fr;
  }
  .btn-lg {
    width: 100%;
  }
  .nav .btn-sm {
    display: none;
  }
}