/* BlackSync — customer-facing site
   White canvas · black ink · bracket motif · modern abstract motion */

:root {
  --ink: #0a0a0a;
  --ink-soft: #3d3d3d;
  --ink-faint: #8a8a8a;
  --paper: #ffffff;
  --paper-alt: #f6f6f6;
  --line: #e4e4e4;
  --font-display: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.08; letter-spacing: -0.02em; }

::selection { background: var(--ink); color: var(--paper); }

/* ---------- outline (hollow) text — echoes the SYNC wordmark ---------- */
.outline {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--ink);
  text-stroke: 1.5px var(--ink);
}
.outline-light {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--paper);
}

.bkt { color: var(--ink-faint); font-weight: 400; }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 clamp(20px, 4vw, 48px);
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  z-index: 100;
}

.brand { display: flex; align-items: center; }
.brand-logo { height: 30px; width: auto; display: block; }

.site-nav { display: flex; gap: clamp(16px, 2.5vw, 36px); }
.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  position: relative;
  padding: 4px 0;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1.5px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s var(--ease-out);
}
.site-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); transition: transform .3s var(--ease-out), opacity .3s; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- buttons — bracket corners on hover ---------- */
.btn {
  position: relative;
  display: inline-block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  padding: 13px 28px;
  cursor: pointer;
  transition: transform .25s var(--ease-out), background .25s, color .25s;
}
.btn:active { transform: scale(.97); }

.btn-solid { background: var(--ink); color: var(--paper); border: 1px solid var(--ink); }
.btn-solid:hover { background: var(--paper); color: var(--ink); }

.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

.btn-light { background: var(--paper); color: var(--ink); border: 1px solid var(--paper); }
.btn-light:hover { background: transparent; color: var(--paper); }

/* corner brackets */
.btn::before, .btn::after {
  content: '';
  position: absolute;
  width: 10px; height: 10px;
  border: 2px solid currentColor;
  opacity: 0;
  transition: opacity .25s, transform .3s var(--ease-out);
}
.btn::before { top: -7px; left: -7px; border-right: none; border-bottom: none; transform: translate(4px, 4px); }
.btn::after { bottom: -7px; right: -7px; border-left: none; border-top: none; transform: translate(-4px, -4px); }
.btn:hover::before, .btn:hover::after { opacity: 1; transform: translate(0, 0); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-h) + 40px) 24px 80px;
  overflow: hidden;
}

#sync-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-inner {
  position: relative;
  max-width: 900px;
  text-align: center;
}

.eyebrow {
  font-family: var(--font-display);
  font-size: clamp(11px, 1.4vw, 13px);
  font-weight: 500;
  letter-spacing: .32em;
  color: var(--ink-soft);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(44px, 8.5vw, 104px);
  font-weight: 700;
  margin-bottom: 28px;
}

.hero-sub {
  max-width: 640px;
  margin: 0 auto 40px;
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--ink-soft);
}

.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 40px;
  border: 1.5px solid var(--ink-faint);
  border-radius: 14px;
}
.scroll-hint span {
  position: absolute;
  top: 7px; left: 50%;
  width: 3px; height: 8px;
  margin-left: -1.5px;
  background: var(--ink);
  border-radius: 2px;
  animation: scrollDot 1.8s var(--ease-out) infinite;
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- capability strip (static) ---------- */
.capstrip {
  background: var(--ink);
  color: var(--paper);
}
.capstrip-in {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.capstrip-in span {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .14em;
  padding: 18px clamp(14px, 2.4vw, 30px);
  position: relative;
}
.capstrip-in span::after {
  content: '';
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  height: 12px; width: 1px;
  background: #333;
}
.capstrip-in span:last-child::after { display: none; }

/* ---------- sections ---------- */
.section { padding: clamp(80px, 12vh, 140px) clamp(20px, 6vw, 80px); max-width: 1280px; margin: 0 auto; }
.section-alt { max-width: none; background: var(--paper-alt); }
.section-alt > * { max-width: 1120px; margin-left: auto; margin-right: auto; }

.section-head { margin-bottom: clamp(48px, 7vh, 80px); }

.sec-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .3em;
  color: var(--ink-soft);
  margin-bottom: 20px;
}
.sec-label.light { color: #bdbdbd; }

.section h2 {
  font-size: clamp(32px, 4.6vw, 56px);
  font-weight: 700;
  margin-bottom: 20px;
}

.sec-sub { max-width: 560px; color: var(--ink-soft); font-size: 17px; }

/* ---------- cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.card {
  position: relative;
  background: var(--paper);
  padding: 40px 36px 48px;
  transition: transform .35s var(--ease-out);
}
.card h3 { font-size: 21px; margin-bottom: 14px; }
.card p { color: var(--ink-soft); font-size: 15px; }
.card em { font-style: italic; }

/* bracket corners on card hover */
.card::before, .card::after {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  border: 2px solid var(--ink);
  opacity: 0;
  transition: opacity .3s, transform .35s var(--ease-out);
  pointer-events: none;
  z-index: 1;
}
.card::before { top: 10px; left: 10px; border-right: none; border-bottom: none; transform: translate(6px, 6px); }
.card::after { bottom: 10px; right: 10px; border-left: none; border-top: none; transform: translate(-6px, -6px); }
.card:hover::before, .card:hover::after { opacity: 1; transform: translate(0, 0); }

.card-invert { background: var(--ink); }
.card-invert h3, .card-invert p { color: var(--paper); }
.card-invert p { color: #c9c9c9; }
.card-invert::before, .card-invert::after { border-color: var(--paper); }

/* ---------- steps ---------- */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(28px, 4vw, 48px);
  counter-reset: step;
}

.step { position: relative; padding-top: 18px; }
.step-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(56px, 6vw, 84px);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--ink);
  margin-bottom: 18px;
}
.step h3 { font-size: 19px; margin-bottom: 10px; }
.step p { color: var(--ink-soft); font-size: 15px; }
.step strong { font-weight: 600; }

/* ---------- why ---------- */
.why-grid {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.2fr);
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}

.why-sticky { position: sticky; top: calc(var(--header-h) + 40px); }

.why-list { list-style: none; }
.why-list li {
  padding: 36px 0;
  border-top: 1px solid var(--line);
}
.why-list li:last-child { border-bottom: 1px solid var(--line); }
.why-list h3 { font-size: 20px; margin-bottom: 10px; position: relative; padding-left: 28px; }
.why-list h3::before {
  content: '+';
  position: absolute;
  left: 0; top: 0;
  font-family: var(--font-display);
  color: var(--ink-faint);
}
.why-list p { color: var(--ink-soft); font-size: 15px; padding-left: 28px; }

/* ---------- night shift ---------- */
.night {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  text-align: center;
  padding: clamp(80px, 12vh, 130px) clamp(20px, 6vw, 80px);
}
/* starfield + moon glow */
.night::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 78% 18%, rgba(255,255,255,.07), transparent 65%),
    radial-gradient(1.2px 1.2px at 12% 28%, #fff 99%, transparent),
    radial-gradient(1.5px 1.5px at 26% 64%, rgba(255,255,255,.8) 99%, transparent),
    radial-gradient(1px 1px at 38% 18%, rgba(255,255,255,.7) 99%, transparent),
    radial-gradient(1.4px 1.4px at 55% 42%, rgba(255,255,255,.6) 99%, transparent),
    radial-gradient(1px 1px at 67% 74%, rgba(255,255,255,.75) 99%, transparent),
    radial-gradient(1.6px 1.6px at 82% 56%, rgba(255,255,255,.7) 99%, transparent),
    radial-gradient(1px 1px at 90% 30%, rgba(255,255,255,.6) 99%, transparent),
    radial-gradient(1.2px 1.2px at 8% 82%, rgba(255,255,255,.5) 99%, transparent),
    radial-gradient(1px 1px at 47% 88%, rgba(255,255,255,.55) 99%, transparent),
    radial-gradient(1.3px 1.3px at 72% 12%, rgba(255,255,255,.65) 99%, transparent);
  animation: twinkle 6s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes twinkle { from { opacity: .55; } to { opacity: 1; } }
.night-inner { position: relative; max-width: 760px; margin: 0 auto; }
.night-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .34em;
  color: #9a9a9a;
  margin-bottom: 20px;
}
.night h2 { font-size: clamp(32px, 4.6vw, 56px); font-weight: 700; margin-bottom: 24px; }
.night-copy { color: #bdbdbd; font-size: 16px; max-width: 640px; margin: 0 auto 30px; }
.night-hours {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .26em;
  color: var(--paper);
  border: 1px solid #3a3a3a;
  padding: 12px 22px;
}
@media (prefers-reduced-motion: reduce) { .night::before { animation: none; } }

/* ---------- pricing — tier cards ---------- */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.tier {
  position: relative;
  border: 1px solid var(--line);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out);
}
.tier:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0,0,0,.08); }

.tier-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.tier-price {
  font-family: var(--font-display);
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}
.tier-price strong { font-size: clamp(34px, 4vw, 44px); font-weight: 700; line-height: 1; }
.tier-price span { font-size: 14px; color: var(--ink-faint); letter-spacing: .04em; }
.tier-for { font-size: 14px; color: var(--ink-soft); margin-bottom: 22px; min-height: 40px; }

.tier-list { list-style: none; display: flex; flex-direction: column; margin-bottom: 26px; }
.tier-list li {
  position: relative;
  padding: 10px 0 10px 24px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink-soft);
}
.tier-list li:first-child { border-top: none; }
.tier-list li::before {
  content: '+';
  position: absolute;
  left: 0; top: 10px;
  font-family: var(--font-display);
  color: var(--ink-faint);
}
.tier-list li strong { color: var(--ink); font-weight: 600; }
.tier .btn { margin-top: auto; text-align: center; }

/* featured (Growth) card — inverted */
.tier-feature {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.tier-feature .tier-name { color: #bdbdbd; }
.tier-feature .tier-for { color: #bdbdbd; }
.tier-feature .tier-list li { border-color: #2a2a2a; color: #d6d6d6; }
.tier-feature .tier-list li::before { color: #8a8a8a; }
.tier-feature .tier-list li strong { color: var(--paper); }
.tier-badge {
  position: absolute;
  top: -11px; left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .22em;
  padding: 5px 14px;
  border: 1px solid var(--paper);
  white-space: nowrap;
}

/* never-per-seat banner */
.per-seat-banner {
  margin-top: clamp(40px, 6vh, 64px);
  padding: clamp(36px, 5vh, 56px) 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}
.psb-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--ink-soft);
  margin-bottom: 16px;
}
.psb-line {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.2vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 14px;
}
.psb-sub {
  max-width: 520px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 15px;
}

.price-fine {
  margin-top: 28px;
  font-size: 13px;
  color: var(--ink-faint);
  text-align: center;
}

/* ---------- contact ---------- */
.section-contact {
  max-width: none;
  background: var(--ink);
  color: var(--paper);
}

.contact-grid {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.1fr);
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}

.contact-copy h2 { font-size: clamp(32px, 4.6vw, 56px); margin-bottom: 20px; }
.contact-copy p { color: #bdbdbd; max-width: 460px; font-size: 16px; }

.contact-form { display: flex; flex-direction: column; gap: 20px; position: relative; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.contact-form label { display: flex; flex-direction: column; gap: 8px; }
.contact-form label span {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #9a9a9a;
}

.contact-form input,
.contact-form textarea {
  background: transparent;
  border: 1px solid #3a3a3a;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 13px 16px;
  transition: border-color .25s;
  border-radius: 0;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--paper);
}

.form-error { color: #ff7a7a; font-size: 14px; }

.form-success {
  position: absolute;
  inset: 0;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
}
.form-success .fs-head {
  font-family: var(--font-display);
  letter-spacing: .3em;
  font-weight: 600;
}
.form-success p:last-child { color: #bdbdbd; }

/* ---------- footer ---------- */
.site-footer {
  padding: 72px 24px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}
.footer-mark { width: 44px; height: 44px; }
.footer-domain { font-family: var(--font-display); font-weight: 600; letter-spacing: .18em; font-size: 14px; }
.footer-email { margin-top: -8px; }
.footer-email a { color: var(--ink-soft); text-decoration: none; font-size: 14px; }
.footer-email a:hover { color: var(--ink); }
.contact-email { margin-top: 20px; }
.contact-email a { color: var(--paper); text-decoration: none; font-family: var(--font-display); font-weight: 600; letter-spacing: .04em; border-bottom: 1px solid #3a3a3a; padding-bottom: 2px; }
.contact-email a:hover { border-color: var(--paper); }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer-nav a { color: var(--ink-soft); text-decoration: none; font-size: 13px; }
.footer-nav a:hover { color: var(--ink); }
.footer-fine { color: var(--ink-faint); font-size: 12px; }

/* ---------- reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.d1 { transition-delay: .12s; }
.reveal.d2 { transition-delay: .24s; }
.reveal.d3 { transition-delay: .36s; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
  }
  .site-nav.open { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a { padding: 12px 0; font-size: 16px; }
  .nav-toggle { display: flex; }
  .header-actions .btn { padding: 10px 18px; font-size: 13px; }

  .why-grid, .contact-grid, .tier-grid { grid-template-columns: 1fr; }
  .tier-for { min-height: 0; }
  .tier-feature { order: -1; }
  .why-sticky { position: static; }
  .form-row { grid-template-columns: 1fr; }
}

/* ---------- small phones ---------- */
@media (max-width: 480px) {
  .section { padding-left: 16px; padding-right: 16px; }
  .hero-cta .btn { flex: 1; text-align: center; }
  .marquee-track span { font-size: 13px; letter-spacing: .16em; }
  .card { padding: 28px 22px 34px; }
  .price-card { padding: 28px 20px; }
  .night-hours { font-size: 9.5px; letter-spacing: .18em; padding: 10px 14px; line-height: 1.8; }
  .psb-sub { font-size: 14px; }
  .contact-form input, .contact-form textarea { font-size: 16px; } /* prevents iOS zoom-on-focus */
  .brand-logo { height: 24px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .scroll-hint span { animation: none; }
  #sync-canvas { display: none; }
}