/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:      #0A0E1A;
  --ink2:     #111827;
  --panel:    #151E2D;
  --blue:     #1565C0;
  --blue-l:   #1E88E5;
  --cyan:     #4FC3F7;
  --cyan-dim: #1B3A52;
  --orange:   #E65100;
  --white:    #F0F6FF;
  --muted:    #7B8FAB;
  --border:   rgba(79,195,247,.15);
  --grad:     linear-gradient(135deg, #0A0E1A 0%, #0D1A2E 60%, #0A0E1A 100%);
}

html { scroll-behavior: smooth; }

body {
  font-family: "DM Sans", sans-serif;
  background: var(--ink);
  color: var(--white);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Noise overlay ── */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.04'/%3E%3C/svg%3E");
  background-size: 200px;
  pointer-events: none;
  opacity: .6;
}

/* ── Nav ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  height: 64px;
  background: rgba(10,14,26,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  display: flex; align-items: center; gap: .75rem;
  text-decoration: none;
}
.nav-logo { width: 36px; height: 36px; border-radius: 8px; }
.nav-title {
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.5rem; letter-spacing: .08em;
  color: var(--white);
}
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  color: var(--muted); font-size: .9rem; text-decoration: none;
  transition: color .2s;
}
.nav-links a:hover { color: var(--cyan); }
.nav-cta {
  background: var(--blue); color: #fff;
  padding: .45rem 1.1rem; border-radius: 8px;
  font-size: .875rem; font-weight: 600; text-decoration: none;
  transition: background .2s, transform .15s;
}
.nav-cta:hover { background: var(--blue-l); transform: translateY(-1px); }

@media (max-width: 640px) {
  .nav-links { display: none; }
}

/* ── Hero ── */
.hero {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 7rem clamp(1.5rem, 6vw, 6rem) 5rem;
  text-align: center;
  overflow: hidden;
}

/* Ink-splash background blobs */
.hero::after {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 70% 50% at 20% 50%, rgba(21,101,192,.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(79,195,247,.10) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 60% 80%, rgba(230,81,0,.08) 0%, transparent 60%);
}

/* Grid lines subtle */
.hero-grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(79,195,247,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,195,247,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--cyan-dim); border: 1px solid rgba(79,195,247,.3);
  color: var(--cyan); font-size: .8rem; font-weight: 600; letter-spacing: .06em;
  padding: .35rem 1rem; border-radius: 999px;
  margin-bottom: 2rem;
  animation: fadeUp .7s .1s both;
}
.hero-badge span { width: 6px; height: 6px; background: var(--cyan); border-radius: 50%; animation: pulse 2s infinite; }

.hero-logo {
  width: clamp(110px, 14vw, 160px);
  height: clamp(110px, 14vw, 160px);
  border-radius: 28px;
  margin-bottom: 2rem;
  filter: drop-shadow(0 0 40px rgba(79,195,247,.25));
  animation: fadeUp .7s .2s both;
}

.hero-title {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(4rem, 11vw, 10rem);
  line-height: .92;
  letter-spacing: .04em;
  background: linear-gradient(160deg, #fff 0%, var(--cyan) 60%, var(--blue-l) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  animation: fadeUp .7s .3s both;
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--muted);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: 2.8rem;
  font-weight: 300;
  animation: fadeUp .7s .4s both;
}

.hero-actions {
  display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;
  animation: fadeUp .7s .5s both;
}

.btn-download {
  display: inline-flex; align-items: center; gap: .7rem;
  background: linear-gradient(135deg, var(--blue) 0%, #0D47A1 100%);
  color: #fff; text-decoration: none;
  padding: .9rem 2rem; border-radius: 12px;
  font-size: 1.05rem; font-weight: 600;
  border: 1px solid rgba(255,255,255,.1);
  box-shadow: 0 4px 32px rgba(21,101,192,.45), 0 1px 0 rgba(255,255,255,.1) inset;
  transition: transform .2s, box-shadow .2s, background .2s;
  position: relative; overflow: hidden;
}
.btn-download::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,.08) 100%);
}
.btn-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(21,101,192,.65), 0 1px 0 rgba(255,255,255,.1) inset;
}
.btn-download svg { flex-shrink: 0; }
.btn-download .dl-meta { display: flex; flex-direction: column; align-items: flex-start; }
.btn-download .dl-label { font-size: .75rem; opacity: .7; font-weight: 400; }
.btn-download .dl-text { font-size: 1rem; }

.btn-secondary {
  display: inline-flex; align-items: center; gap: .6rem;
  color: var(--cyan); text-decoration: none;
  padding: .9rem 1.6rem; border-radius: 12px;
  font-size: .95rem; font-weight: 500;
  border: 1px solid var(--border);
  background: rgba(79,195,247,.05);
  transition: background .2s, border-color .2s, transform .2s;
}
.btn-secondary:hover {
  background: rgba(79,195,247,.1);
  border-color: rgba(79,195,247,.35);
  transform: translateY(-2px);
}

.hero-os {
  margin-top: 2.5rem;
  color: var(--muted); font-size: .8rem;
  display: flex; align-items: center; gap: .5rem;
  animation: fadeUp .7s .65s both;
}
.hero-os-dot { width: 4px; height: 4px; background: var(--muted); border-radius: 50%; }

/* ── Scroll indicator ── */
.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  color: var(--muted); font-size: .75rem; letter-spacing: .08em;
  animation: fadeUp .7s .9s both;
}
.scroll-arrow {
  width: 24px; height: 24px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

/* ── Stats strip ── */
.stats {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-item {
  background: var(--ink);
  padding: 2rem 1.5rem; text-align: center;
}
.stat-num {
  font-family: "Bebas Neue", sans-serif;
  font-size: 2.8rem; color: var(--cyan);
  line-height: 1;
}
.stat-label { font-size: .8rem; color: var(--muted); margin-top: .3rem; }

/* ── Sections common ── */
section { position: relative; z-index: 1; }
.section-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 6rem clamp(1.5rem, 5vw, 3rem);
}
.eyebrow {
  font-size: .75rem; font-weight: 700; letter-spacing: .15em;
  color: var(--cyan); text-transform: uppercase;
  margin-bottom: .75rem;
}
.section-title {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1; letter-spacing: .03em;
  margin-bottom: 1rem;
}
.section-desc {
  color: var(--muted); font-size: 1rem; max-width: 560px;
  line-height: 1.7; margin-bottom: 3rem; font-weight: 300;
}

/* ── Features ── */
#features { background: var(--ink2); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.feature-card:hover {
  border-color: rgba(79,195,247,.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,.4);
}
.feature-icon {
  font-size: 2rem; margin-bottom: 1rem;
  display: inline-flex;
}
.feature-name {
  font-weight: 600; font-size: 1rem;
  margin-bottom: .5rem; color: var(--white);
}
.feature-desc { color: var(--muted); font-size: .875rem; line-height: 1.65; }

/* ── How it works ── */
#how { background: var(--ink); }
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  counter-reset: steps;
}
.step {
  counter-increment: steps;
  position: relative; padding-left: 0;
}
.step::before {
  content: counter(steps, decimal-leading-zero);
  font-family: "Bebas Neue", sans-serif;
  font-size: 4rem; line-height: 1;
  color: rgba(79,195,247,.12);
  display: block; margin-bottom: .5rem;
}
.step-title { font-weight: 700; margin-bottom: .4rem; }
.step-desc { color: var(--muted); font-size: .875rem; line-height: 1.65; }

/* Connector line (desktop) */
@media (min-width: 768px) {
  .steps { position: relative; }
  .steps::before {
    content: "";
    position: absolute;
    top: 2rem; left: 4rem; right: 4rem; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    z-index: 0;
  }
}

/* ── Pricing model ── */
#pricing { background: var(--ink2); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.price-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  position: relative; overflow: hidden;
}
.price-card::after {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}
.price-card.accent::after {
  background: linear-gradient(90deg, var(--orange), #FF8F00);
}
.price-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: .78rem; color: var(--cyan);
  background: rgba(79,195,247,.1);
  border: 1px solid rgba(79,195,247,.2);
  border-radius: 6px;
  padding: .25rem .6rem;
  display: inline-block; margin-bottom: 1rem;
}
.price-card.accent .price-tag { color: #FFB74D; background: rgba(230,81,0,.1); border-color: rgba(230,81,0,.2); }
.price-card-title { font-weight: 700; font-size: 1rem; margin-bottom: .5rem; }
.price-card-desc { color: var(--muted); font-size: .875rem; line-height: 1.65; }
.price-formula {
  margin-top: 1rem;
  font-family: "JetBrains Mono", monospace;
  font-size: .78rem;
  background: rgba(0,0,0,.3);
  border-left: 2px solid var(--cyan);
  padding: .6rem .8rem;
  border-radius: 0 6px 6px 0;
  color: #B3E5FC;
  line-height: 1.6;
}
.price-card.accent .price-formula { border-left-color: var(--orange); color: #FFE0B2; }

/* ── Download CTA ── */
#download {
  background: linear-gradient(135deg, #0D1A2E 0%, #0A1628 50%, #0D1A2E 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.download-inner {
  max-width: 760px; margin: 0 auto;
  padding: 6rem clamp(1.5rem, 5vw, 3rem);
  text-align: center;
}
.download-inner .section-title { font-size: clamp(2.5rem, 6vw, 5rem); }
.download-inner .section-desc { margin: 1rem auto 2.5rem; }
.download-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.version-note {
  margin-top: 1.5rem;
  color: var(--muted); font-size: .8rem;
}
.version-note code {
  font-family: "JetBrains Mono", monospace;
  background: rgba(79,195,247,.08);
  padding: .15rem .4rem; border-radius: 4px;
  color: var(--cyan);
}

/* ── Footer ── */
footer {
  position: relative; z-index: 1;
  background: var(--ink);
  border-top: 1px solid var(--border);
  padding: 3rem clamp(1.5rem, 5vw, 4rem);
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 2rem;
  align-items: center; justify-content: space-between;
}
.footer-brand {
  display: flex; align-items: center; gap: .75rem;
}
.footer-brand img { width: 32px; height: 32px; border-radius: 6px; }
.footer-brand-name { font-weight: 600; font-size: .95rem; }
.footer-brand-sub { font-size: .78rem; color: var(--muted); }
.footer-links { display: flex; gap: 2rem; }
.footer-links a {
  color: var(--muted); font-size: .875rem; text-decoration: none;
  transition: color .2s;
}
.footer-links a:hover { color: var(--cyan); }
.footer-copy { color: var(--muted); font-size: .78rem; width: 100%; margin-top: 1.5rem; text-align: center; }

/* ── Social pill ── */
.social-row {
  display: flex; justify-content: center; gap: 1rem;
  margin-top: 1.5rem;
}
.social-pill {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .5rem 1.1rem; border-radius: 999px;
  font-size: .875rem; font-weight: 600; text-decoration: none;
  transition: transform .2s, box-shadow .2s;
}
.social-pill:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.4); }
.social-fb { background: #1877F2; color: #fff; }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; } 50% { opacity: .4; }
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(6px); }
}

/* Intersection observer fade-in */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 500px) {
  .btn-download { width: 100%; justify-content: center; }
  .btn-secondary { width: 100%; justify-content: center; }
}