/* YesOne — website styles (Prolinx LLC). Black & white only. */
:root {
  --black: #000000;
  --ink: #0A0A0A;
  --gray-700: #333333;
  --gray-500: #6B6B6B;
  --gray-400: #8A8A8A;
  --gray-200: #E5E5E5;
  --gray-100: #F2F2F2;
  --gray-50: #FAFAFA;
  --white: #FFFFFF;
  --max: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Wordmark ---------- */
.wordmark {
  font-size: 22px;
  letter-spacing: -0.5px;
  color: var(--black);
  line-height: 1;
  white-space: nowrap;
}
.wordmark .yes { font-weight: 800; }
.wordmark .one { font-weight: 300; }
.wordmark:hover { text-decoration: none; }

/* ---------- Top bar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--gray-200);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--gray-700); font-weight: 600; font-size: 15px; }
.nav-links a:hover { color: var(--black); }

/* ---------- Hero ---------- */
.hero {
  background: var(--white);
  padding: 80px 0 56px;
  text-align: center;
}
.hero .hero-logo {
  width: 180px;
  height: auto;
  display: block;
  margin: 0 auto 10px;
}
.hero .hero-mark {
  font-size: 40px;
  letter-spacing: -1px;
  margin-bottom: 8px;
  display: inline-block;
}
.hero .hero-byline {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}
.hero .hero-byline strong { color: var(--black); font-weight: 700; }
.hero h1 {
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--black);
  font-weight: 800;
  margin-bottom: 20px;
}
.hero p.sub {
  font-size: 20px;
  color: var(--gray-500);
  max-width: 620px;
  margin: 0 auto 36px;
}
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 30px;
  border-radius: 999px;
  transition: transform .08s ease, opacity .2s ease;
  border: 1.5px solid var(--black);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { opacity: 0.85; }
.btn-secondary { background: var(--white); color: var(--black); }
.btn-secondary:hover { background: var(--gray-100); }

/* ---------- Sections ---------- */
section.block { padding: 72px 0; }
section.block.alt { background: var(--gray-50); border-top: 1px solid var(--gray-200); border-bottom: 1px solid var(--gray-200); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 {
  font-size: 36px;
  letter-spacing: -1px;
  color: var(--black);
  font-weight: 800;
  margin-bottom: 12px;
}
.section-head p { font-size: 18px; color: var(--gray-500); }

/* ---------- Screenshot carousel ---------- */
.carousel {
  display: flex;
  gap: 28px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 8px 24px 28px;
  scrollbar-width: none;
}
.carousel::-webkit-scrollbar { display: none; }
.slide {
  scroll-snap-align: center;
  flex: 0 0 auto;
  width: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.slide .shot {
  width: 300px;
  border-radius: 28px;
  border: 1px solid var(--gray-200);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.10);
  display: block;
  margin-bottom: 22px;
}
.slide h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--black);
  letter-spacing: -0.4px;
  margin-bottom: 8px;
}
.slide p {
  font-size: 15px;
  color: var(--gray-500);
  max-width: 300px;
}
.carousel-hint {
  text-align: center;
  color: var(--gray-400);
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
}

/* ---------- Legal / doc pages ---------- */
.doc { padding: 56px 0 72px; }
.doc .wrap { max-width: 800px; }
.doc h1 {
  font-size: 40px;
  letter-spacing: -1.5px;
  color: var(--black);
  font-weight: 800;
  margin-bottom: 8px;
}
.doc .updated { color: var(--gray-400); font-size: 15px; margin-bottom: 32px; }
.doc h2 {
  font-size: 22px;
  color: var(--black);
  font-weight: 800;
  letter-spacing: -0.4px;
  margin: 36px 0 12px;
}
.doc h3 { font-size: 17px; color: var(--black); font-weight: 700; margin: 24px 0 8px; }
.doc p { margin-bottom: 14px; color: var(--gray-700); }
.doc ul { margin: 0 0 16px 22px; }
.doc li { margin-bottom: 8px; color: var(--gray-700); }
.doc .callout {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 15px;
}
.doc strong { color: var(--black); }

/* ---------- Contact ---------- */
.contact-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 36px;
  text-align: center;
}
.contact-card h3 { font-size: 20px; color: var(--black); margin-bottom: 8px; }
.contact-card .email {
  display: inline-block;
  margin-top: 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--black);
}
.contact-card .entity {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-500);
  font-size: 15px;
}

/* ---------- Footer ---------- */
footer {
  background: var(--black);
  color: var(--gray-400);
  padding: 48px 0 40px;
}
footer .foot-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}
footer .wordmark { color: var(--white); }
footer .wordmark .yes,
footer .wordmark .one { color: var(--white); }
footer .foot-links { display: flex; gap: 24px; flex-wrap: wrap; }
footer .foot-links a { color: var(--gray-400); font-weight: 600; font-size: 15px; }
footer .foot-links a:hover { color: var(--white); }
footer .legal {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #262626;
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}
footer .legal a { color: var(--gray-400); }
footer .legal a:hover { color: var(--white); }
footer .legal strong { color: var(--white); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero h1 { font-size: 40px; letter-spacing: -1.5px; }
  .hero p.sub { font-size: 18px; }
  .section-head h2 { font-size: 28px; }
  .nav-links { gap: 16px; }
  .nav-links a.hide-sm { display: none; }
  .slide, .slide .shot { width: 260px; }
}