/* ───────────────────────────────────────────────────────
   Master UDSTools — marketing site
   Vanilla CSS. Dark-first, matches the app's palette.
   ─────────────────────────────────────────────────────── */

:root {
  --bg:        #0b0d12;
  --bg-2:      #0f131a;
  --panel:     #141922;
  --panel-2:   #1a212c;
  --border:    #232b38;
  --border-2:  #2c3644;
  --text:      #e8edf4;
  --text-dim:  #9aa7b8;
  --text-mut:  #6b7788;
  --brand:     #ff4d5e;   /* the "Master" red from the app wordmark */
  --brand-2:   #ff7a86;
  --accent:    #3d8bff;   /* the app's blue action color */
  --accent-2:  #63a4ff;
  --good:      #3ddc84;
  --warn:      #ffb020;
  --radius:    14px;
  --radius-sm: 10px;
  --wrap:      1180px;
  --shadow:    0 24px 60px -20px rgba(0,0,0,.6);
  --shadow-sm: 0 8px 24px -12px rgba(0,0,0,.6);
  --font:      'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono:      'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 14px 26px; font-size: 16px; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px -10px rgba(61,139,255,.7);
}
.btn-primary:hover { background: var(--accent-2); box-shadow: 0 10px 30px -8px rgba(61,139,255,.75); }

.btn-ghost {
  background: rgba(255,255,255,.04);
  border-color: var(--border-2);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: var(--text-mut); }

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,13,18,.72);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(11,13,18,.9);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  letter-spacing: -.01em;
}
.brand-mark {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), #c22636);
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  box-shadow: 0 6px 18px -6px rgba(255,77,94,.7);
}
.brand-text b { color: var(--brand); font-weight: 800; }
.brand-text { font-weight: 600; }

.nav {
  display: flex;
  gap: 26px;
  margin-left: 12px;
  font-size: 15px;
  color: var(--text-dim);
}
.nav a { transition: color .15s ease; }
.nav a:hover { color: var(--text); }

.header-cta { margin-left: auto; display: flex; gap: 10px; }

.menu-toggle {
  display: none;
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 22px; height: 2px; background: var(--text); border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}

.mobile-nav[hidden] { display: none; }
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 24px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.mobile-nav a { padding: 10px 0; color: var(--text-dim); }
.mobile-nav .btn { margin-top: 8px; }

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 84px 0 72px;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -240px; left: 50%;
  transform: translateX(-50%);
  width: 1100px; height: 700px;
  background:
    radial-gradient(closest-side, rgba(61,139,255,.20), transparent 70%),
    radial-gradient(closest-side, rgba(255,77,94,.14), transparent 70%);
  background-position: 30% 30%, 75% 40%;
  background-repeat: no-repeat;
  filter: blur(10px);
  z-index: 0;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--brand-2);
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  font-weight: 800;
}
.lede {
  font-size: 18px;
  color: var(--text-dim);
  margin: 0 0 28px;
  max-width: 34em;
}
.lede strong { color: var(--text); font-weight: 700; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-badges {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 14.5px;
  color: var(--text-mut);
}
.hero-badges li { color: var(--text-dim); }

/* screenshot frame */
.shot-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-2);
  background: var(--panel);
  box-shadow: var(--shadow);
}
.shot-bar {
  display: flex; gap: 7px;
  padding: 11px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
}
.shot-bar span {
  width: 11px; height: 11px; border-radius: 50%;
  background: #3a4453;
}
.shot-bar span:nth-child(1) { background: #ff5f57; }
.shot-bar span:nth-child(2) { background: #febc2e; }
.shot-bar span:nth-child(3) { background: #28c840; }
.shot-frame img { display: block; width: 100%; }

/* ── Trust strip ────────────────────────────────────────── */
.strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.strip-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  padding: 24px;
}
.strip-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1 1 120px;
  text-align: center;
}
.strip-item b {
  font-family: var(--mono);
  font-size: 20px;
  color: var(--text);
  letter-spacing: .02em;
}
.strip-item span { font-size: 13px; color: var(--text-mut); }

/* ── Sections ───────────────────────────────────────────── */
.section { padding: 92px 0; }
.section-head { max-width: 720px; margin: 0 0 48px; }
.section-head h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 6px 0 0;
  font-weight: 800;
}
.section-sub { font-size: 17px; color: var(--text-dim); margin: 16px 0 0; }

/* ── Positioning / compare ──────────────────────────────── */
.positioning { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.compare-col {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 12px;
}
.compare-col.accent {
  border-color: rgba(61,139,255,.4);
  background: linear-gradient(180deg, rgba(61,139,255,.06), var(--panel) 60%);
  box-shadow: var(--shadow-sm);
}
.compare-col h3 { margin: 0 0 16px; font-size: 18px; }
.compare-col ul { list-style: none; padding: 0; margin: 0; }
.compare-col li {
  position: relative;
  padding: 10px 0 10px 30px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-dim);
}
.compare-col li:first-child { border-top: none; }
.cons li::before {
  content: "✕"; position: absolute; left: 0; top: 10px;
  color: var(--text-mut); font-weight: 700;
}
.pros li::before {
  content: "✓"; position: absolute; left: 0; top: 10px;
  color: var(--good); font-weight: 700;
}
.pros li { color: var(--text); }
.fineprint { font-size: 13.5px; color: var(--text-mut); margin: 20px 0 0; max-width: 60em; }

/* lineage: 2.1 + 3 → Master UDSTools */
.lineage {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1.15fr;
  align-items: stretch;
  gap: 16px;
}
.lineage-src, .lineage-out {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.lineage-out {
  border-color: rgba(255,77,94,.4);
  background: linear-gradient(180deg, rgba(255,77,94,.08), var(--panel) 65%);
  box-shadow: var(--shadow-sm);
}
.lineage-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--text-dim);
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border-2);
  background: var(--bg);
  margin-bottom: 12px;
}
.lineage-tag.out {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand), #c22636);
}
.lineage-src p, .lineage-out p { margin: 0; font-size: 14px; color: var(--text-dim); }
.lineage-out p em { color: var(--text); font-style: normal; font-weight: 600; }
.lineage-plus, .lineage-arrow {
  display: grid;
  place-items: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-mut);
}
.lineage-arrow { color: var(--brand-2); }

/* ── Features grid ──────────────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.feature:hover {
  transform: translateY(-3px);
  border-color: var(--border-2);
  background: var(--panel-2);
}
.feature-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(61,139,255,.18), rgba(255,77,94,.14));
  border: 1px solid var(--border-2);
  font-size: 20px;
  margin-bottom: 16px;
}
.feature h3 { margin: 0 0 8px; font-size: 17px; }
.feature p { margin: 0; color: var(--text-dim); font-size: 14.5px; }

/* ── Screenshots showcase ───────────────────────────────── */
.screens { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.showcase { display: flex; flex-direction: column; gap: 64px; }
.showcase-row {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 48px;
  align-items: center;
}
.showcase-row.reverse { grid-template-columns: 1.4fr 0.9fr; }
.showcase-row.reverse .showcase-text { order: 2; }
.showcase-text h3 { font-size: 24px; margin: 0 0 12px; letter-spacing: -.01em; }
.showcase-text p { color: var(--text-dim); font-size: 16px; margin: 0; }
.showcase-shot {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-2);
  box-shadow: var(--shadow);
  background: var(--panel);
}
.showcase-shot img { display: block; width: 100%; }

.theme-note {
  margin-top: 72px;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 40px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.theme-note h3 { margin: 0 0 8px; font-size: 22px; }
.theme-note p { margin: 0; color: var(--text-dim); }
.theme-shot {
  margin: 0; border-radius: var(--radius-sm); overflow: hidden;
  border: 1px solid var(--border-2); box-shadow: var(--shadow-sm);
}

/* ── Platforms ──────────────────────────────────────────── */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.platform-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.platform-card h3 { margin: 0 0 8px; font-size: 18px; }
.platform-card p { margin: 0; color: var(--text-dim); font-size: 14.5px; }

/* ── Demo ───────────────────────────────────────────────── */
.demo { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.demo-inner {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 52px;
  align-items: center;
}
.demo-text h2 { font-size: clamp(26px, 3.5vw, 36px); margin: 6px 0 16px; letter-spacing: -.02em; }
.demo-text p { color: var(--text-dim); font-size: 16.5px; margin: 0; }
.demo-list {
  list-style: none; padding: 0; margin: 22px 0 0;
  display: flex; flex-direction: column; gap: 8px;
  color: var(--text-dim); font-size: 15px;
}
.demo-note {
  margin: 22px 0 18px !important;
  font-size: 15px;
  color: var(--text-mut) !important;
  border-left: 2px solid var(--border-2);
  padding-left: 14px;
}
.demo-shot {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border-2); box-shadow: var(--shadow);
}

/* ── Trust / privacy ────────────────────────────────────── */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.trust-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color .18s ease, transform .18s ease;
}
.trust-card:hover { border-color: var(--border-2); transform: translateY(-3px); }
.trust-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(61,220,132,.16), rgba(61,139,255,.14));
  border: 1px solid var(--border-2);
  font-size: 20px;
  margin-bottom: 16px;
}
.trust-card h3 { margin: 0 0 8px; font-size: 17px; }
.trust-card p { margin: 0; color: var(--text-dim); font-size: 14.5px; }

/* ── Licensing ──────────────────────────────────────────── */
.license-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}
.license-steps ol { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 20px; }
.license-steps li { display: flex; gap: 16px; align-items: flex-start; }
.step-n {
  flex: none;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #2563d6);
  color: #fff; font-weight: 700;
  box-shadow: 0 6px 16px -8px rgba(61,139,255,.8);
}
.license-steps h3 { margin: 4px 0 4px; font-size: 17px; }
.license-steps p { margin: 0; color: var(--text-dim); font-size: 14.5px; }
.license-shot {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border-2); box-shadow: var(--shadow);
}

.perks {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.perk {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px;
}
.perk b { display: block; font-size: 15.5px; margin-bottom: 6px; }
.perk span { color: var(--text-dim); font-size: 14px; }

.cta-band {
  margin-top: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  padding: 40px;
  border-radius: var(--radius);
  background:
    radial-gradient(1000px 300px at 20% 0%, rgba(61,139,255,.16), transparent 60%),
    radial-gradient(900px 300px at 90% 100%, rgba(255,77,94,.14), transparent 60%),
    var(--panel);
  border: 1px solid var(--border-2);
}
.cta-band h2 { font-size: clamp(22px, 3vw, 30px); margin: 0 0 6px; letter-spacing: -.01em; }
.cta-band p { margin: 0; color: var(--text-dim); }

/* ── FAQ ────────────────────────────────────────────────── */
.faq { background: var(--bg-2); border-top: 1px solid var(--border); }
.faq-list { max-width: 820px; }
.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--accent-2);
  font-size: 22px;
  font-weight: 400;
  transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 22px 20px; color: var(--text-dim); font-size: 15px; }
.faq details p a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 2px; }
.faq details p a:hover { color: var(--accent); }

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 56px 0 32px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.footer-brand { max-width: 340px; }
.footer-brand .brand-mark { display: inline-grid; vertical-align: middle; margin-right: 8px; }
.footer-brand .brand-text { font-size: 18px; }
.footer-brand p { margin: 14px 0 0; color: var(--text-mut); font-size: 14.5px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 14px 28px; align-content: flex-start; }
.footer-nav a { color: var(--text-dim); font-size: 15px; }
.footer-nav a:hover { color: var(--text); }
.footer-legal { padding-top: 24px; }
.footer-legal p { margin: 4px 0; color: var(--text-mut); font-size: 12.5px; }
.footer-note { color: #56616f !important; }

/* ── Reveal-on-scroll ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ── Responsive ─────────────────────────────────────────── */
@media (min-width: 961px) {
  .mobile-nav { display: none !important; }
}
@media (max-width: 960px) {
  .nav, .header-cta { display: none; }
  .menu-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 56px 0 48px; }
  .compare, .feature-grid, .platform-grid, .perks, .trust-grid { grid-template-columns: 1fr 1fr; }
  .lineage {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .lineage-plus, .lineage-arrow { transform: rotate(90deg); font-size: 20px; padding: 2px 0; }
  .showcase-row, .showcase-row.reverse { grid-template-columns: 1fr; gap: 24px; }
  .showcase-row.reverse .showcase-text { order: 0; }
  .theme-note, .demo-inner, .license-layout { grid-template-columns: 1fr; gap: 28px; }
  .section { padding: 64px 0; }
}
@media (max-width: 620px) {
  .feature-grid, .platform-grid, .perks, .compare, .trust-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .strip-inner { gap: 16px; }
  .strip-item { flex-basis: 40%; }
  .cta-band { flex-direction: column; align-items: flex-start; }
  .wrap { padding: 0 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .feature { transition: none; }
}