/* Asimov Code — landing
   Design tokens from the "Nocturne" system, pushed toward violet. */

:root {
  --color-neutral-100: #f7f5ff;
  --color-neutral-200: #eeeafd;
  --color-neutral-300: #ddd6f5;
  --color-neutral-400: #b9b2d6;
  --color-neutral-500: #948db3;
  --color-neutral-700: #5a5476;
  --color-neutral-800: #3e3958;
  --color-neutral-900: #1f1b33;

  --color-accent-100: #f1ecff;
  --color-accent-300: #c9b8ff;
  --color-accent-500: #8b5cf6;
  --color-accent-600: #7445e8;
  --color-accent-700: #5b2fc9;
  --color-accent-900: #1c1240;

  --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 55%, #4c1d95 100%);

  --font-heading: "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;

  --radius-md: 8px;
  --radius-lg: 14px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-neutral-100);
  color: var(--color-neutral-900);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}

p { margin: 0; }

a { color: inherit; }

/* — header — */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px clamp(20px, 5vw, 56px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.mark {
  position: relative;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: var(--radius-md);
  background: var(--gradient-accent);
  box-shadow: 0 4px 14px rgba(109, 40, 217, 0.28);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
}

.mark-as {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: #fff;
  padding: 0 0 5px 5px;
}

.mark-code {
  position: absolute;
  top: 4px;
  right: 5px;
  font-size: 7px;
  color: var(--color-accent-300);
}

.wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.word-asimov {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.22em;
  color: var(--color-neutral-900);
}

.word-code {
  font-size: 9px;
  letter-spacing: 0.34em;
  color: var(--color-accent-700);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 13px;
  color: var(--color-neutral-700);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--color-accent-700);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--color-accent-300);
  border-radius: var(--radius-md);
  background: var(--color-accent-100);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 13px;
  color: var(--color-accent-700);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.contact-link:hover {
  border-color: var(--color-accent-600);
  color: var(--color-accent-900);
}

/* — hero — */
.hero {
  min-height: calc(100svh - 90px);
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  align-items: stretch;
}

.hero-left {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px clamp(20px, 5vw, 56px) 56px;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(70% 55% at 0% 45%, rgba(139, 92, 246, 0.22), transparent 70%),
    radial-gradient(45% 40% at 70% 85%, rgba(196, 181, 253, 0.25), transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.rule {
  width: 56px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-accent);
}

.text-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h1 {
  font-size: clamp(34px, 5vw, 58px);
  max-width: 16ch;
  text-wrap: pretty;
}

.lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--color-neutral-700);
  max-width: 44ch;
}

.badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  height: 24px;
  padding: 0 10px;
  border: 1px solid var(--color-accent-300);
  border-radius: 999px;
  background: var(--color-accent-100);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--color-accent-700);
}

.hero-right {
  --panel-line: rgba(201, 184, 255, 0.14);
  background:
    radial-gradient(80% 50% at 100% 0%, rgba(139, 92, 246, 0.35), transparent 70%),
    var(--color-accent-900);
  color: var(--color-neutral-100);
  display: flex;
  flex-direction: column;
}

.panel-label {
  padding: 34px clamp(20px, 4vw, 48px) 18px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-300);
}

.services {
  flex: 1;
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--panel-line);
}

.service {
  flex: 1;
  display: grid;
  grid-template-columns: 88px 1fr;
  align-content: center;
  column-gap: 4px;
  row-gap: 8px;
  padding: 20px clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--panel-line);
}

.service:first-child { border-top: none; }

.service-num {
  grid-row: span 2;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 52px;
  line-height: 0.9;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, var(--color-accent-300), rgba(139, 92, 246, 0.25));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.service-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: #fff;
}

.service-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-neutral-400);
  max-width: 40ch;
}

.stack {
  border-top: 1px solid var(--panel-line);
  padding: 22px clamp(20px, 4vw, 48px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(201, 184, 255, 0.1);
  border: 1px solid rgba(201, 184, 255, 0.2);
  font-size: 11px;
  color: var(--color-accent-300);
}

/* — sections — */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(64px, 9vw, 112px) clamp(20px, 5vw, 56px);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 640px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-700);
}

.eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--color-accent-600);
}

h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  text-wrap: balance;
}

h3 {
  font-size: 19px;
  color: var(--color-neutral-900);
}

.section-lede {
  font-size: 17px;
  color: var(--color-neutral-700);
  max-width: 56ch;
}

/* — mvp offer — */
.mvp {
  border-top: 1px solid var(--color-neutral-300);
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 56px 0 0;
  border-top: 1px solid var(--color-neutral-300);
  border-bottom: 1px solid var(--color-neutral-300);
}

.fact {
  padding: 24px 24px 24px 0;
}

.fact + .fact {
  padding-left: 24px;
  border-left: 1px solid var(--color-neutral-300);
}

.fact dt {
  font-family: var(--font-heading);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--color-accent-700);
}

.fact dd {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--color-neutral-700);
}

.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
}

.pillar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.pillar:hover {
  border-color: var(--color-accent-300);
  box-shadow: 0 8px 24px rgba(109, 40, 217, 0.08);
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--color-accent-700);
}

.pillar p {
  font-size: 14px;
  color: var(--color-neutral-700);
  max-width: 52ch;
}

/* — full cycle (dark band) — */
.cycle {
  background:
    radial-gradient(60% 80% at 100% 0%, rgba(139, 92, 246, 0.35), transparent 70%),
    radial-gradient(50% 60% at 0% 100%, rgba(109, 40, 217, 0.3), transparent 70%),
    var(--color-accent-900);
  color: var(--color-neutral-100);
}

.cycle h2,
.cycle h3 {
  color: var(--color-neutral-100);
}

.cycle .eyebrow {
  color: var(--color-accent-300);
}

.cycle .eyebrow::before {
  background: var(--color-accent-300);
}

.cycle .section-lede {
  color: var(--color-neutral-400);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  list-style: none;
  margin: 56px 0 0;
  padding: 0;
}

.step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 28px;
  border-top: 1px solid rgba(210, 206, 253, 0.25);
}

.step::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-accent-300);
  box-shadow: 0 0 0 4px rgba(201, 184, 255, 0.18);
}

.step-week {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-300);
}

.step p {
  font-size: 14px;
  color: var(--color-neutral-400);
}

.step-out {
  margin-top: auto;
  padding-top: 12px;
  font-size: 12px;
  color: var(--color-neutral-200);
}

.step-out::before {
  content: "→ ";
  color: var(--color-accent-300);
}

/* — deliverables — */
.deliverables-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-neutral-300);
}

.checklist li {
  position: relative;
  padding: 16px 0 16px 32px;
  border-bottom: 1px solid var(--color-neutral-300);
  font-size: 15px;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 12px;
  height: 6px;
  border-left: 1.5px solid var(--color-accent-600);
  border-bottom: 1.5px solid var(--color-accent-600);
  transform: rotate(-45deg);
}

/* — cta — */
.cta {
  background: var(--gradient-accent);
  color: #fff;
}

.cta h2 {
  color: #fff;
}

.cta .section-lede {
  color: var(--color-accent-100);
}

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  height: 46px;
  margin-top: 8px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  background: #fff;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  color: var(--color-accent-700);
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(28, 18, 64, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.cta-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(28, 18, 64, 0.32);
}

/* — footer — */
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px clamp(20px, 5vw, 56px);
  border-top: 1px solid var(--color-neutral-300);
  font-size: 12px;
  color: var(--color-neutral-700);
}

.site-footer a {
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-accent-700);
}

/* — responsive — */
@media (max-width: 1000px) {
  .timeline {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 48px;
  }
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .service {
    grid-template-columns: 64px 1fr;
    padding: 22px clamp(20px, 5vw, 56px);
  }

  .service-num {
    font-size: 40px;
  }

  .hero {
    min-height: 0;
  }

  .facts {
    grid-template-columns: repeat(2, 1fr);
  }

  .fact:nth-child(3) {
    padding-left: 0;
    border-left: none;
  }

  .fact:nth-child(n + 3) {
    border-top: 1px solid var(--color-neutral-300);
  }

  .pillars,
  .deliverables-grid {
    grid-template-columns: 1fr;
  }

  .deliverables-grid {
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 20px 20px;
  }

  .contact-link {
    font-size: 12px;
    padding: 0 10px;
  }

  .lede {
    font-size: 16px;
  }

  .nav-link {
    display: none;
  }

  .timeline {
    grid-template-columns: 1fr;
  }

  .pillar {
    padding: 22px;
  }
}