/* Stealth — getstealth.app
   Black & white premium Mac utility style */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-50: #f9f9f9;
  --gray-100: #f0f0f0;
  --gray-200: #e0e0e0;
  --gray-400: #a0a0a0;
  --gray-600: #606060;
  --gray-800: #202020;
  --radius: 14px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --max: 960px;
  --transition: 0.18s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
}
nav .nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--black);
  text-decoration: none;
}
.nav-logo span { opacity: 0.4; font-weight: 500; }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
  font-size: 14px;
  color: var(--gray-600);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--black); background: var(--gray-100); }
.nav-cta {
  background: var(--black) !important;
  color: var(--white) !important;
  font-weight: 600;
}
.nav-cta:hover { background: var(--gray-800) !important; }

/* ── SECTIONS ── */
section, .section {
  padding: 96px 24px;
}
section:first-of-type { padding-top: 80px; }

.container {
  max-width: var(--max);
  margin: 0 auto;
}

/* ── HERO ── */
.hero {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: 120px 24px 96px;
}
.hero .eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -2px;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--gray-400);
}
.hero p {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--gray-400);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.5;
}
.hero-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition), transform var(--transition);
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-primary { background: var(--white); color: var(--black); }
.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-dark { background: var(--black); color: var(--white); }
.btn-outline { background: transparent; color: var(--black); border: 1.5px solid var(--gray-200); }

.hero-trust {
  margin-top: 20px;
  font-size: 13px;
  color: var(--gray-600);
}

/* ── DEMO ── */
.demo-section { background: var(--gray-50); }
.demo-wrap {
  background: var(--black);
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 16/9;
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.demo-placeholder {
  text-align: center;
  color: var(--gray-600);
}
.demo-placeholder .play-icon {
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}
.demo-placeholder p { font-size: 14px; }

/* ── SECTION HEADER ── */
.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 750;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px;
  color: var(--gray-600);
  max-width: 520px;
  line-height: 1.55;
}

/* ── USE CASES ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 48px;
}
.card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
}
.card-icon {
  width: 40px;
  height: 40px;
  background: var(--black);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 18px;
}
.card h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.card p { font-size: 14px; color: var(--gray-600); line-height: 1.5; }

/* ── HOW IT WORKS ── */
.steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 32px; margin-top: 48px; }
.step-num {
  font-size: 48px;
  font-weight: 800;
  color: var(--gray-200);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -2px;
}
.step h3 { font-size: 18px; font-weight: 650; margin-bottom: 8px; }
.step p { font-size: 15px; color: var(--gray-600); line-height: 1.55; }

/* ── PRIVACY ── */
.privacy-section { background: var(--black); color: var(--white); }
.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 0;
}
.privacy-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}
.privacy-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.privacy-item .check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  margin-top: 2px;
}
.privacy-item p { font-size: 15px; color: var(--gray-400); line-height: 1.5; }
.privacy-item strong { color: var(--white); }
.privacy-aside {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 40px;
}
.privacy-aside h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.privacy-aside p { font-size: 15px; color: var(--gray-400); line-height: 1.6; }

/* ── PRICING ── */
.pricing-section { text-align: center; }
.price-card {
  max-width: 420px;
  margin: 48px auto 0;
  border: 2px solid var(--black);
  border-radius: 20px;
  padding: 40px;
  position: relative;
}
.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--black);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}
.price-name { font-size: 22px; font-weight: 700; margin-bottom: 24px; }
.price-amount {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
}
.price-amount .main { font-size: 56px; font-weight: 800; letter-spacing: -2px; }
.price-amount .was { font-size: 20px; color: var(--gray-400); text-decoration: line-through; }
.price-note { font-size: 14px; color: var(--gray-600); margin-bottom: 32px; }
.price-features {
  list-style: none;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
.price-features li {
  display: flex;
  gap: 10px;
  font-size: 15px;
  align-items: center;
}
.price-features li::before { content: "✓"; font-weight: 700; }

/* ── FAQ ── */
.faq-section { background: var(--gray-50); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 48px; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
}
.faq-item h3 { font-size: 15px; font-weight: 650; margin-bottom: 8px; }
.faq-item p { font-size: 14px; color: var(--gray-600); line-height: 1.55; }

/* ── FINAL CTA ── */
.cta-section {
  background: var(--black);
  color: var(--white);
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}
.cta-section p { font-size: 17px; color: var(--gray-400); margin-bottom: 36px; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--gray-200);
  padding: 40px 24px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links { display: flex; gap: 24px; }
.footer-links a, footer p { font-size: 14px; color: var(--gray-400); text-decoration: none; }
.footer-links a:hover { color: var(--black); }

/* ── BLOG ── */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; margin-top: 48px; }
.blog-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color var(--transition), transform var(--transition);
}
.blog-card:hover { border-color: var(--black); transform: translateY(-2px); }
.blog-tag { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray-400); margin-bottom: 10px; }
.blog-card h2 { font-size: 18px; font-weight: 650; line-height: 1.35; margin-bottom: 10px; }
.blog-card p { font-size: 14px; color: var(--gray-600); line-height: 1.55; }

/* ── HELP ── */
.help-section { max-width: 720px; margin: 0 auto; }
.help-section h2 { font-size: 26px; font-weight: 700; margin: 48px 0 16px; }
.help-section h2:first-child { margin-top: 0; }
.help-section p, .help-section li { font-size: 16px; color: var(--gray-600); line-height: 1.65; margin-bottom: 12px; }
.help-section ul, .help-section ol { padding-left: 20px; }
.help-section code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: 4px;
}
.help-section .tip {
  background: var(--gray-50);
  border-left: 3px solid var(--black);
  padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
}

/* ── ARTICLE ── */
.article-wrap { max-width: 720px; margin: 0 auto; padding: 64px 24px; }
.article-header { margin-bottom: 48px; }
.article-header .tag { font-size: 13px; color: var(--gray-400); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.article-header h1 { font-size: clamp(26px, 4vw, 42px); font-weight: 800; letter-spacing: -1px; line-height: 1.15; margin-bottom: 16px; }
.article-header .meta { font-size: 14px; color: var(--gray-400); }
.article-body h2 { font-size: 24px; font-weight: 700; margin: 40px 0 14px; letter-spacing: -0.5px; }
.article-body h3 { font-size: 18px; font-weight: 650; margin: 28px 0 10px; }
.article-body p { font-size: 17px; line-height: 1.75; color: var(--gray-800); margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body li { font-size: 17px; line-height: 1.75; color: var(--gray-800); margin-bottom: 6px; }
.article-cta {
  background: var(--black);
  color: var(--white);
  border-radius: 20px;
  padding: 40px;
  margin: 56px 0;
  text-align: center;
}
.article-cta h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.article-cta p { font-size: 15px; color: var(--gray-400); margin-bottom: 24px; }

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  .privacy-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .nav-links .hide-mobile { display: none; }
  section, .section { padding: 64px 20px; }
  .hero { padding: 80px 20px 64px; }
}