/* Linthra landing page — plain CSS, dark theme, mobile-first.
   Brand: violet #7C5CFF → orange #FF9F43 on a dark #111018 background,
   echoing the app icon's equalizer-bar gradient. No JS, no trackers. */

:root {
  --purple: #7C5CFF;
  --purple-bright: #9C84FF;
  --orange: #FF9F43;
  --bg: #111018;
  --bg-2: #15131f;
  --surface: #1a1827;
  --surface-2: #211e30;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #ECEAF4;
  --muted: #A7A1BE;
  --gradient: linear-gradient(135deg, var(--purple) 0%, var(--orange) 100%);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --radius: 16px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: var(--purple-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; margin: 0; }

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

.container.narrow { max-width: 760px; }

/* Accessible focus + skip link */
:focus-visible {
  outline: 2px solid var(--purple-bright);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  background: var(--surface-2);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(17, 16, 24, 0.78);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
}
.brand:hover { text-decoration: none; }
.brand-mark { border-radius: 8px; }
.brand-name {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--text); text-decoration: none; }

@media (max-width: 600px) {
  .site-nav { gap: 14px; }
  .site-nav a:not(:last-child) { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  text-align: center;
  padding: 72px 0 56px;
  background:
    radial-gradient(60% 55% at 22% 8%, rgba(124, 92, 255, 0.22), transparent 70%),
    radial-gradient(55% 50% at 85% 18%, rgba(255, 159, 67, 0.16), transparent 70%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
}

.hero-inner { display: flex; flex-direction: column; align-items: center; }

.hero-logo {
  width: 104px;
  height: 104px;
  border-radius: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 22px;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--muted);
}

.hero-title {
  font-size: clamp(2.6rem, 8vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  font-size: clamp(1.15rem, 3.5vw, 1.5rem);
  font-weight: 600;
  margin: 14px 0 0;
  color: var(--text);
}

.hero-desc {
  max-width: 620px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 1.05rem;
}

/* ---------- Buttons & chips ---------- */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 30px;
}
.cta-row.center { margin-top: 26px; }
.cta-row-soon { margin-top: 16px; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn-primary {
  background: var(--gradient);
  color: #160f08;
  box-shadow: 0 10px 26px rgba(124, 92, 255, 0.35);
}
.btn-primary:hover { box-shadow: 0 14px 32px rgba(255, 159, 67, 0.4); }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--surface-2); border-color: var(--purple); }

.btn-ico { width: 20px; height: 20px; flex: none; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed var(--border-strong);
}
.chip em {
  font-style: normal;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--orange);
  opacity: 0.95;
}
.chip-link {
  border-style: solid;
  color: var(--text);
}
.chip-link:hover { border-color: var(--purple); text-decoration: none; color: var(--text); }

.alpha-note {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 560px;
}
.badge-alpha {
  display: inline-block;
  margin-right: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--orange);
  background: rgba(255, 159, 67, 0.12);
  border: 1px solid rgba(255, 159, 67, 0.35);
}

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section-title {
  font-size: clamp(1.6rem, 4.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-align: center;
}
.section-lead {
  max-width: 680px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 1.05rem;
}
.section-lead.center { text-align: center; }
.narrow .section-lead { text-align: center; }

.muted-note {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 30px;
}

/* ---------- Feature grid ---------- */
.feature-grid {
  list-style: none;
  margin: 38px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  position: relative;
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--border-strong); }

.card h3 { font-size: 1.12rem; margin: 14px 0 8px; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.card-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  color: #1a1206;
  background: var(--gradient);
}
.card-ico svg { width: 24px; height: 24px; }

.card-soon { border-color: rgba(255, 159, 67, 0.3); }
.card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--orange);
  background: rgba(255, 159, 67, 0.12);
  border: 1px solid rgba(255, 159, 67, 0.35);
}

/* ---------- Screenshots ---------- */
.shots-scroller {
  display: flex;
  gap: 18px;
  margin-top: 34px;
  padding: 4px 4px 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.shot {
  flex: 0 0 auto;
  width: 220px;
  margin: 0;
  scroll-snap-align: center;
}
.shot img {
  width: 100%;
  height: auto;
  border-radius: 22px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.shot figcaption {
  margin-top: 12px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Scrollbar styling for the screenshot rail */
.shots-scroller::-webkit-scrollbar { height: 8px; }
.shots-scroller::-webkit-scrollbar-thumb {
  background: var(--surface-2);
  border-radius: 999px;
}

@media (min-width: 760px) {
  .shots-scroller {
    flex-wrap: wrap;
    justify-content: center;
    overflow-x: visible;
  }
  .shot { width: 230px; }
}

/* ---------- Get it ---------- */
.store-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 28px;
}
.store-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 18px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed var(--border-strong);
  text-align: center;
}
.store-item strong { color: var(--text); }
.store-item span { color: var(--muted); font-size: 0.88rem; }

/* ---------- Privacy ---------- */
.section-privacy {
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(124, 92, 255, 0.1), transparent 70%),
    var(--bg-2);
  border-block: 1px solid var(--border);
}
.section-privacy .center { margin-top: 28px; text-align: center; }

/* ---------- Footer ---------- */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.footer-brand .brand-mark { border-radius: 7px; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
}
.footer-links a { color: var(--muted); font-size: 0.92rem; }
.footer-links a:hover { color: var(--text); }
.footer-credit { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* ---------- Legal / privacy page ---------- */
.legal { padding: 56px 0 72px; }
.legal-title { text-align: center; }
.legal-updated {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 10px 0 0;
}
.legal-body {
  margin-top: 34px;
  color: #D4CFE4;
  font-size: 1rem;
}
.legal-body h2 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 34px 0 12px;
}
.legal-body p { margin: 0 0 14px; }
.legal-body ul { margin: 0 0 16px; padding-left: 1.25em; }
.legal-body li { margin: 7px 0; }
.legal-body a { color: var(--purple-bright); }

/* Privacy highlight callout */
.legal-callout {
  margin: 28px 0 6px;
  padding: 22px;
  border-radius: var(--radius);
  background:
    radial-gradient(90% 130% at 0% 0%, rgba(124, 92, 255, 0.12), transparent 70%),
    var(--surface);
  border: 1px solid var(--border-strong);
}
.legal-callout ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.legal-callout li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0;
  color: var(--text);
  font-weight: 500;
}
.legal-callout svg {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex: none;
  color: var(--purple-bright);
}
.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 32px;
  font-weight: 600;
}