/* Sequenced Loops public site - storefront + blog.
   Deep space navy, electric cyan, violet, glass-morphism, zero dependencies.
   Mobile-first. Scroll animations are CSS-only (animation-timeline, progressive). */

:root {
  --bg: #0A0E1A;
  --bg-2: #0D1424;
  --surface: #101729;
  --ink: #E6EAF2;
  --dim: #99A2B8;
  --faint: #6E7791;
  --line: rgba(230, 234, 242, .08);
  --cyan: #22D3EE;
  --violet: #7C6CF6;
  --grad: linear-gradient(120deg, #22D3EE, #7C6CF6);
  --glass: rgba(255, 255, 255, .03);
  --glass-line: rgba(255, 255, 255, .09);
  --radius: 16px;
  --font: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --nav-h: 64px;
}

/* ---------- reset / base ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  background:
    radial-gradient(1000px 640px at 85% -8%, rgba(124, 108, 246, .14), transparent 62%),
    radial-gradient(900px 600px at -12% 30%, rgba(34, 211, 238, .08), transparent 60%),
    radial-gradient(800px 520px at 50% 115%, rgba(124, 108, 246, .10), transparent 60%),
    var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
::selection { background: rgba(34, 211, 238, .3); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3, h4 { line-height: 1.12; letter-spacing: -.025em; font-weight: 700; }
h1 { font-size: clamp(2.5rem, 7vw, 4.25rem); letter-spacing: -.035em; }
h2 { font-size: clamp(1.85rem, 4.6vw, 2.7rem); }
h3 { font-size: clamp(1.15rem, 2.4vw, 1.3rem); letter-spacing: -.015em; }

.container { width: min(1140px, 100% - 40px); margin-inline: auto; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- founding banner ---------- */
.banner {
  background: linear-gradient(100deg, rgba(34, 211, 238, .14), rgba(124, 108, 246, .18));
  border-bottom: 1px solid var(--glass-line);
  text-align: center;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  padding: 9px 16px;
}
.banner b { color: #fff; font-weight: 700; }
.banner .spark-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan); margin-right: 8px; vertical-align: 1px;
  box-shadow: 0 0 10px rgba(34, 211, 238, .9);
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: rgba(10, 14, 26, .55);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background .25s, border-color .25s;
}
.nav.scrolled { background: rgba(10, 14, 26, .82); border-bottom-color: var(--line); }
.nav-inner { height: var(--nav-h); display: flex; align-items: center; gap: 28px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.02em; }
.logo-mark {
  width: 26px; height: 26px; border-radius: 8px; flex: 0 0 26px;
  background: conic-gradient(from 210deg, var(--cyan), var(--violet) 55%, var(--cyan));
  box-shadow: 0 0 18px rgba(34, 211, 238, .35);
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a:not(.btn) {
  font-size: 14.5px; font-weight: 500; color: var(--dim);
  padding: 8px 14px; border-radius: 9px;
  transition: color .15s, background .15s;
}
.nav-links a:not(.btn):hover { color: var(--ink); background: var(--glass); }
.nav-links .btn { margin-left: 10px; }
.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 1px solid var(--glass-line); border-radius: 9px;
  color: var(--ink); font-size: 18px; line-height: 1; padding: 8px 12px; cursor: pointer;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: rgba(10, 14, 26, .96);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 12px 14px; }
  .nav-links .btn { margin: 10px 0 0; justify-content: center; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 15px/1 var(--font);
  padding: 13px 24px; border-radius: 12px; border: 1px solid transparent;
  cursor: pointer; white-space: nowrap;
  transition: transform .15s, box-shadow .2s, background .2s, border-color .2s;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  background: var(--grad); color: #061018;
  box-shadow: 0 4px 24px rgba(34, 211, 238, .25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 32px rgba(34, 211, 238, .42); }
.btn-ghost {
  background: var(--glass); color: var(--ink);
  border-color: var(--glass-line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: rgba(34, 211, 238, .45); background: rgba(34, 211, 238, .06); }
.btn-lg { padding: 16px 32px; font-size: 16px; border-radius: 14px; }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- hero ---------- */
.hero { position: relative; padding: clamp(76px, 12vw, 140px) 0 clamp(54px, 8vw, 90px); text-align: center; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, .25); border-radius: 999px;
  padding: 7px 16px; margin-bottom: 26px;
  background: rgba(34, 211, 238, .06);
}
.hero h1 { max-width: 860px; margin: 0 auto; }
.hero-sub {
  max-width: 600px; margin: 22px auto 0;
  font-size: clamp(1.05rem, 2.4vw, 1.25rem); line-height: 1.6; color: var(--dim);
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 36px; }
.hero-note { margin-top: 18px; font-size: 13px; color: var(--faint); }

/* ---------- metric trust strip ---------- */
.metrics {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
  padding: 10px 0 0;
}
.metric {
  text-align: center; padding: 26px 14px;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: var(--radius);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.metric b {
  display: block; font-size: clamp(1.9rem, 4.5vw, 2.6rem); font-weight: 800;
  letter-spacing: -.03em; font-variant-numeric: tabular-nums;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.metric span { display: block; margin-top: 4px; font-size: 13.5px; color: var(--dim); }
@media (min-width: 860px) { .metrics { grid-template-columns: repeat(4, 1fr); } }

/* ---------- sections ---------- */
.section { padding: clamp(70px, 11vw, 124px) 0; }
.section.tight { padding-top: clamp(40px, 6vw, 60px); }
.sec-head { max-width: 680px; margin: 0 auto clamp(40px, 6vw, 64px); text-align: center; }
.kicker {
  font-size: 12.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 14px;
}
.sec-sub { margin-top: 16px; color: var(--dim); font-size: 1.06rem; }

/* ---------- grids / glass cards ---------- */
.grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .grid.g2, .grid.g3, .grid.g4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1020px) {
  .grid.g3 { grid-template-columns: repeat(3, 1fr); }
  .grid.g4 { grid-template-columns: repeat(4, 1fr); }
}

.glass-card {
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  padding: 28px 26px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform .2s, border-color .25s, box-shadow .25s;
}
.glass-card:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 211, 238, .32);
  box-shadow: 0 14px 44px rgba(2, 8, 22, .5), inset 0 0 36px rgba(34, 211, 238, .03);
}
.glass-card h3 { margin-bottom: 8px; }
.glass-card p { color: var(--dim); font-size: 14.5px; }
.card-ic {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  font-size: 19px; margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(34, 211, 238, .16), rgba(124, 108, 246, .2));
  border: 1px solid rgba(34, 211, 238, .25);
}

/* ---------- how it works ---------- */
.steps { display: grid; gap: 16px; grid-template-columns: 1fr; counter-reset: step; }
@media (min-width: 860px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { position: relative; padding: 30px 26px; }
.step-num {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center; margin-bottom: 18px;
  font: 700 15px/1 var(--mono);
  color: #061018; background: var(--grad);
  box-shadow: 0 0 22px rgba(34, 211, 238, .3);
}
.flow-strip {
  margin: 34px auto 0; max-width: 720px;
  text-align: center; font-size: 15px; font-weight: 600;
  padding: 16px 24px; border-radius: 999px;
  background: var(--glass); border: 1px solid var(--glass-line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.flow-strip .arrow { color: var(--cyan); margin: 0 10px; font-weight: 400; }

/* ---------- proof ---------- */
.proof-tag {
  display: inline-block; font-size: 11px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 12px;
  padding: 4px 10px; border: 1px solid rgba(34, 211, 238, .25); border-radius: 6px;
  background: rgba(34, 211, 238, .05);
}
.proof-link { color: var(--cyan); font-weight: 600; font-size: 14px; display: inline-block; margin-top: 12px; }
.proof-link:hover { text-decoration: underline; }

/* ---------- pricing ---------- */
.pricing-grid { display: grid; gap: 16px; grid-template-columns: 1fr; align-items: stretch; }
@media (min-width: 700px) { .pricing-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .pricing-grid { grid-template-columns: repeat(4, 1fr); } }

.tier {
  position: relative; display: flex; flex-direction: column;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 18px;
  padding: 30px 26px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform .2s, border-color .25s, box-shadow .25s;
}
.tier:hover { transform: translateY(-3px); border-color: rgba(34, 211, 238, .3); }
.tier.featured {
  border: 1px solid transparent;
  background:
    linear-gradient(rgba(15, 21, 40, .94), rgba(15, 21, 40, .94)) padding-box,
    var(--grad) border-box;
  box-shadow: 0 16px 50px rgba(34, 211, 238, .12);
}
.tier-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: #061018; background: var(--grad);
  padding: 5px 14px; border-radius: 999px; white-space: nowrap;
  box-shadow: 0 4px 18px rgba(34, 211, 238, .35);
}
.tier-name { font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); }
.tier-price { margin-top: 14px; line-height: 1.1; }
.tier-price .amt { font-size: clamp(1.9rem, 3.2vw, 2.3rem); font-weight: 800; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.tier-price .per { font-size: 14px; color: var(--dim); font-weight: 500; }
.tier-setup { margin-top: 5px; font-size: 13px; color: var(--faint); }
.tier-blurb { margin-top: 12px; font-size: 14px; color: var(--dim); min-height: 42px; }
.tier-features { margin: 20px 0 26px; display: grid; gap: 10px; flex: 1; }
.tier-features li { position: relative; padding-left: 26px; font-size: 14px; color: var(--ink); }
.tier-features li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--cyan); font-weight: 700;
}
.tier-features li.muted { color: var(--faint); }
.tier .btn { margin-top: auto; }

.founding-note {
  margin: 36px auto 0; max-width: 640px; text-align: center;
  font-size: 14px; color: var(--dim);
  padding: 14px 22px; border-radius: 12px;
  border: 1px dashed rgba(34, 211, 238, .3);
  background: rgba(34, 211, 238, .04);
}
.founding-note b { color: var(--ink); }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item {
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 14px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  overflow: hidden;
}
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; font-weight: 600; font-size: 15.5px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 20px; font-weight: 400; color: var(--cyan);
  flex: 0 0 auto; transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] { border-color: rgba(34, 211, 238, .28); }
.faq-a { padding: 0 22px 20px; color: var(--dim); font-size: 14.5px; line-height: 1.7; }

/* ---------- final CTA ---------- */
.cta-final {
  text-align: center; padding: clamp(60px, 9vw, 100px) 24px;
  border: 1px solid var(--glass-line); border-radius: 24px;
  background:
    radial-gradient(600px 300px at 50% -20%, rgba(34, 211, 238, .12), transparent 70%),
    radial-gradient(500px 280px at 80% 120%, rgba(124, 108, 246, .14), transparent 70%),
    var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.cta-final h2 { max-width: 620px; margin: 0 auto; }
.cta-final p { max-width: 520px; margin: 16px auto 0; color: var(--dim); }
.cta-final .hero-ctas { margin-top: 32px; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 44px 0 56px; margin-top: clamp(60px, 9vw, 110px); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 14px; }
.footer-links a { color: var(--dim); transition: color .15s; }
.footer-links a:hover { color: var(--cyan); }
.footer-fine { width: 100%; font-size: 12.5px; color: var(--faint); margin-top: 6px; }

/* ---------- blog ---------- */
.page-head { padding: clamp(56px, 9vw, 100px) 0 clamp(30px, 4vw, 44px); text-align: center; }
.page-head h1 { font-size: clamp(2.1rem, 5.5vw, 3.2rem); }
.page-head .sec-sub { max-width: 560px; margin-inline: auto; }

.post-card { display: flex; flex-direction: column; }
.post-card h3 { font-size: 1.18rem; line-height: 1.3; }
.post-card h3 a:hover { color: var(--cyan); }
.post-card p { flex: 1; margin-top: 8px; }
.post-meta { font-size: 12.5px; color: var(--faint); letter-spacing: .04em; text-transform: uppercase; font-weight: 600; margin-bottom: 12px; }
.post-card .proof-link { margin-top: 16px; }

.crumbs { font-size: 13.5px; color: var(--faint); margin-bottom: 28px; }
.crumbs a { color: var(--dim); }
.crumbs a:hover { color: var(--cyan); }

.post { max-width: 740px; margin: 0 auto; padding: clamp(44px, 7vw, 72px) 0 20px; }
.post header h1 { font-size: clamp(1.9rem, 4.8vw, 2.7rem); line-height: 1.15; }
.post .post-meta { margin: 18px 0 0; }
.post-desc { margin-top: 14px; font-size: 1.08rem; color: var(--dim); line-height: 1.6; }

.post-body { margin-top: 40px; font-size: 16.5px; line-height: 1.75; color: #C9D0E0; }
.post-body h2 { color: var(--ink); font-size: clamp(1.4rem, 3vw, 1.7rem); margin: 2.2em 0 .6em; }
.post-body h3 { color: var(--ink); font-size: 1.18rem; margin: 1.8em 0 .5em; }
.post-body p { margin: 0 0 1.1em; }
.post-body a { color: var(--cyan); border-bottom: 1px solid rgba(34, 211, 238, .35); }
.post-body a:hover { border-bottom-color: var(--cyan); }
.post-body strong { color: var(--ink); }
.post-body ul, .post-body ol { margin: 0 0 1.2em; padding-left: 24px; display: grid; gap: 7px; }
.post-body ul { list-style: disc; }
.post-body ol { list-style: decimal; }
.post-body li::marker { color: var(--cyan); }
.post-body blockquote {
  margin: 1.4em 0; padding: 4px 22px;
  border-left: 3px solid var(--cyan);
  background: var(--glass); border-radius: 0 10px 10px 0;
  color: var(--dim);
}
.post-body code {
  font-family: var(--mono); font-size: .86em;
  background: rgba(255, 255, 255, .06); border: 1px solid var(--line);
  border-radius: 5px; padding: 1px 6px;
}
.post-body pre {
  margin: 1.4em 0; padding: 18px 20px; overflow-x: auto;
  background: #0B101F; border: 1px solid var(--line); border-radius: 12px;
}
.post-body pre code { background: none; border: none; padding: 0; font-size: 13.5px; line-height: 1.6; }
.post-body table {
  width: 100%; border-collapse: collapse; margin: 1.4em 0;
  font-size: 14.5px; display: block; overflow-x: auto;
}
.post-body th, .post-body td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.post-body th { color: var(--ink); background: var(--glass); font-weight: 600; white-space: nowrap; }

.cta-box {
  margin: clamp(48px, 7vw, 72px) auto 0; max-width: 740px;
  text-align: center; padding: 38px 30px;
  border: 1px solid transparent; border-radius: 18px;
  background:
    linear-gradient(rgba(15, 21, 40, .94), rgba(15, 21, 40, .94)) padding-box,
    var(--grad) border-box;
}
.cta-box h2 { font-size: clamp(1.4rem, 3.4vw, 1.9rem); }
.cta-box p { margin: 12px auto 22px; max-width: 480px; color: var(--dim); font-size: 15px; }

/* ---------- scroll reveal (CSS-only, progressive enhancement) ---------- */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      animation: rise-in both;
      animation-timeline: view();
      animation-range: entry 0% entry 38%;
    }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}