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

:root {
  --bg: #08090c;
  --surface: #0f1014;
  --surface-raised: #15161c;
  --border: #1f2029;
  --border-hover: #2e2f3d;
  --text-primary: #dddde4;
  --text-secondary: #8a8b9a;
  --text-dim: #5c5d6e;
  --accent: #5b6cf7;
  --accent-soft: rgba(91, 108, 247, 0.12);
  --accent-hover: #4a5be6;
  --positive: #34c759;
  --positive-soft: rgba(52, 199, 89, 0.1);
  --negative: #ff453a;
  --negative-soft: rgba(255, 69, 58, 0.1);
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'DM Serif Display', Georgia, serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ────────────────────────────────────────────────────────────── */

nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(8, 9, 12, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1080px; margin: 0 auto;
  padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-sans);
  font-weight: 800; font-size: 18px; letter-spacing: 3px;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-cta {
  font-size: 13px; font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 8px 18px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--accent-soft); }

/* ── Shared ─────────────────────────────────────────────────────────── */

.section-inner {
  max-width: 1080px; margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  font-size: 12px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

h2 {
  font-family: var(--font-serif);
  font-size: 36px; font-weight: 400;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 22px;
}

.btn-main {
  display: inline-block;
  background: var(--accent); color: #fff;
  font-family: var(--font-sans);
  font-size: 14px; font-weight: 600;
  padding: 13px 28px;
  border: none; border-radius: 7px;
  text-decoration: none; cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}
.btn-main:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-ghost {
  display: inline-block;
  color: var(--text-secondary);
  font-size: 14px; font-weight: 500;
  text-decoration: none;
  padding: 13px 20px;
  transition: color 0.2s;
}
.btn-ghost:hover { color: var(--text-primary); }

/* ── Hero ───────────────────────────────────────────────────────────── */

.hero {
  padding: 140px 32px 80px;
  max-width: 1080px; margin: 0 auto;
  overflow: hidden;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-inner { max-width: 520px; }

.hero-eyebrow {
  font-size: 13px; font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: 48px; font-weight: 400;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 24px;
}

.hero-body {
  font-size: 16px; line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.hero-cta-row {
  display: flex; align-items: center; gap: 8px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: flex-end;
}

.hero-screenshot {
  position: relative;
  transform: perspective(1200px) rotateY(-8deg) rotateX(2deg);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    0 0 60px rgba(91, 108, 247, 0.08);
  transition: transform 0.4s ease;
}

.hero-screenshot:hover {
  transform: perspective(1200px) rotateY(-3deg) rotateX(1deg);
}

.hero-screenshot img {
  display: block;
  width: 100%;
  height: auto;
}

/* ── Proof Bar ──────────────────────────────────────────────────────── */

.proof-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.proof-inner {
  max-width: 1080px; margin: 0 auto;
  padding: 36px 32px;
  display: flex; align-items: center; justify-content: center;
  gap: 48px;
}

.proof-stat { text-align: center; }
.proof-num {
  display: block;
  font-size: 28px; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.proof-label {
  font-size: 12px; color: var(--text-dim);
  max-width: 180px; display: block;
}
.proof-divider {
  width: 1px; height: 40px;
  background: var(--border);
}

/* ── Problem ────────────────────────────────────────────────────────── */

.problem {
  padding: 100px 0 90px;
}

.problem h2 { max-width: 600px; }

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 40px;
}

.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 24px;
  transition: border-color 0.25s;
}
.problem-card:hover { border-color: var(--border-hover); }

.problem-card h3 {
  font-size: 16px; font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.problem-card p {
  font-size: 14px; line-height: 1.65;
  color: var(--text-secondary);
}

/* ── How It Works ───────────────────────────────────────────────────── */

.how {
  padding: 90px 0 100px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how h2 { max-width: 560px; }

.steps {
  margin-top: 48px;
  display: flex; flex-direction: column;
  gap: 0;
}

.step {
  display: flex; gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child { border-bottom: none; }

.step-num {
  font-size: 13px; font-weight: 700;
  color: var(--accent);
  min-width: 36px;
  padding-top: 3px;
}

.step-body h3 {
  font-size: 18px; font-weight: 600;
  margin-bottom: 8px;
}
.step-body p {
  font-size: 15px; line-height: 1.65;
  color: var(--text-secondary);
  max-width: 520px;
}

/* ── Replace Section ────────────────────────────────────────────────── */

.replace {
  padding: 100px 0;
}

.replace-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.replace-text p {
  font-size: 15px; line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 14px;
  max-width: 440px;
}

.replace-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.compare-col {
  border-radius: 10px;
  padding: 24px 20px;
}
.compare-col.old {
  background: var(--negative-soft);
  border: 1px solid rgba(255, 69, 58, 0.15);
}
.compare-col.new {
  background: var(--positive-soft);
  border: 1px solid rgba(52, 199, 89, 0.15);
}

.compare-col h4 {
  font-size: 13px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 14px;
}
.compare-col.old h4 { color: var(--negative); }
.compare-col.new h4 { color: var(--positive); }

.compare-col ul {
  list-style: none;
}
.compare-col li {
  font-size: 13px; line-height: 1.5;
  color: var(--text-secondary);
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.compare-col li:last-child { border-bottom: none; }

/* ── Waitlist ───────────────────────────────────────────────────────── */

.waitlist {
  padding: 90px 0 100px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  text-align: center;
}

.waitlist h2 {
  font-size: 40px;
}

.waitlist > .section-inner > p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 420px; margin: 0 auto 32px;
}

.waitlist-form {
  display: flex;
  max-width: 440px; margin: 0 auto;
  gap: 10px;
}

.waitlist-form input[type="email"] {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 13px 16px;
  border-radius: 7px;
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.waitlist-form input[type="email"]:focus {
  border-color: var(--accent);
}

.waitlist-note {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 12px;
}

/* ── Footer ─────────────────────────────────────────────────────────── */

footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  max-width: 1080px; margin: 0 auto;
  padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
}

.footer-logo {
  font-weight: 800; font-size: 14px;
  letter-spacing: 3px;
  color: var(--text-dim);
}

.footer-copy {
  font-size: 12px; color: var(--text-dim);
}

.footer-link {
  font-size: 12px; color: var(--text-dim);
}

/* ── Responsive ─────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .hero { padding: 120px 24px 50px; }
  .hero-layout { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 34px; }
  .hero-body { font-size: 15px; }
  .hero-cta-row { flex-direction: column; align-items: flex-start; }
  .hero-screenshot { transform: none; }

  .proof-inner { flex-direction: column; gap: 24px; }
  .proof-divider { width: 60px; height: 1px; }

  .problem-grid { grid-template-columns: 1fr; }
  .replace-layout { grid-template-columns: 1fr; gap: 40px; }
  .replace-comparison { grid-template-columns: 1fr; }

  h2 { font-size: 28px; }
  .waitlist h2 { font-size: 32px; }
  .waitlist-form { flex-direction: column; }

  .section-inner { padding: 0 24px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}