/* SimSuite marketing site
   Tokens per design handoff: colors in oklch, Source Serif 4 for display,
   system-ui for UI text, ui-monospace for meta/mono. Square corners, no
   shadows — separation comes from hairline rules and bg shifts. */

:root {
  --ink: oklch(0.19 0.012 88);
  --ink-text: oklch(0.22 0.02 88);
  --ink-soft: oklch(0.28 0.02 88);
  --brass: oklch(0.55 0.08 72);
  --brass-light: oklch(0.68 0.1 74);
  --brass-muted: oklch(0.5 0.06 74);
  --green: oklch(0.34 0.055 152);
  --bone: oklch(0.96 0.008 88);
  --white: #ffffff;

  --rule-light: rgba(0, 0, 0, 0.12);
  --rule-light-2: rgba(0, 0, 0, 0.14);
  --rule-dark: rgba(255, 255, 255, 0.12);

  --text-body: rgba(0, 0, 0, 0.6);
  --text-muted: rgba(0, 0, 0, 0.45);
  --text-body-dark: rgba(255, 255, 255, 0.6);
  --text-muted-dark: rgba(255, 255, 255, 0.45);

  --font-serif: "Source Serif 4", serif;
  --font-ui: system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, Menlo, monospace;

  --container: 1180px;
  --header-h: 80px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bone);
  color: var(--ink-text);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.eyebrow {
  display: block;
  font: 400 12px/1 var(--font-ui);
  letter-spacing: 5px;
  color: var(--brass-muted);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
}

section[id] {
  scroll-margin-top: var(--header-h);
}

.btn {
  display: inline-block;
  font: 400 13px var(--font-ui);
  letter-spacing: 3px;
  padding: 11px 20px;
  border: none;
  cursor: pointer;
  transition: background-color 150ms ease;
}

.btn-ink {
  background: var(--ink-text);
  color: var(--bone);
}

.btn-ink:hover {
  background: var(--green);
}

.btn-large {
  padding: 18px 34px;
}

.btn-brass {
  background: var(--brass-light);
  color: var(--ink);
  padding: 18px 38px;
}

.btn-brass:hover {
  background: var(--bone);
}

/* ---------- Logo ---------- */

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-mark {
  border: 1.2px solid var(--brass);
  padding: 6px 8px;
  display: flex;
  gap: 3px;
  flex: none;
}

.logo-mark span {
  font: 400 21px var(--font-serif);
  line-height: 1;
}

.logo-mark .s1 {
  color: var(--ink-text);
}

.logo-mark .s2 {
  color: var(--brass);
}

.logo-mark--large {
  padding: 9px 12px;
  gap: 4px;
}

.logo-mark--large span {
  font-size: 30px;
}

.logo-mark--reversed {
  border-color: var(--brass-light);
}

.logo-mark--reversed .s1 {
  color: var(--bone);
}

.logo-mark--reversed .s2 {
  color: var(--brass-light);
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.logo-word {
  font: 400 19px var(--font-serif);
  letter-spacing: 3.5px;
  color: var(--ink-text);
}

.logo-descriptor {
  font: 400 8px var(--font-ui);
  letter-spacing: 3.5px;
  color: var(--brass-muted);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bone);
  border-bottom: 1px solid var(--brass);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 48px;
  height: var(--header-h);
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-link {
  font: 400 12px var(--font-ui);
  letter-spacing: 2.5px;
  color: oklch(0.35 0.02 88);
}

.nav-link:hover {
  color: oklch(0.28 0.04 74);
}

.nav-download {
  color: var(--bone);
  background: var(--ink-text);
  padding: 11px 20px;
}

.nav-download:hover {
  background: var(--green);
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 48px 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
  text-align: center;
}

.hero h1 {
  font: 400 72px/1.06 var(--font-serif);
  letter-spacing: 1px;
  color: oklch(0.2 0.02 88);
  max-width: 16ch;
  text-wrap: balance;
}

.hero p {
  font: 400 19px/1.6 var(--font-ui);
  color: var(--text-body);
  max-width: 60ch;
  text-wrap: pretty;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-meta {
  font: 400 13px var(--font-ui);
  color: var(--text-muted);
}

.hero--construction {
  min-height: 56vh;
  justify-content: center;
  padding-top: 48px;
  padding-bottom: 48px;
}

/* ---------- Product shot (launcher mockup) ---------- */

.product-shot {
  width: 100%;
  margin-top: 26px;
  border: 1px solid var(--brass);
  background: var(--white);
  padding: 14px;
  overflow-x: auto;
}

.product-shot-window {
  height: 520px;
  overflow: hidden;
  position: relative;
}

.launcher {
  width: 1920px;
  height: 1040px;
  transform: scale(0.55);
  transform-origin: top left;
  background: var(--bone);
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.launcher-header {
  height: 108px;
  display: flex;
  align-items: center;
  padding: 0 44px;
  border-bottom: 1px solid var(--brass);
  position: relative;
}

.launcher-clock {
  display: flex;
  align-items: baseline;
  gap: 18px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.launcher-clock .date {
  font: 400 15px var(--font-ui);
  letter-spacing: 4px;
  color: var(--brass-muted);
}

.launcher-clock .time {
  font: 400 40px var(--font-serif);
  color: var(--ink-text);
}

.launcher-hw {
  margin-left: auto;
  display: flex;
  gap: 16px;
}

.launcher-hw span {
  width: 52px;
  height: 52px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 400 13px var(--font-ui);
  color: rgba(0, 0, 0, 0.5);
}

.launcher-body {
  flex: 1;
  display: flex;
}

.launcher-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 44px 52px 60px;
  border-right: 1px solid rgba(0, 0, 0, 0.1);
}

.launcher-col:last-child {
  border-right: none;
}

.launcher-index {
  font: 400 15px var(--font-mono);
  letter-spacing: 5px;
  color: rgba(0, 0, 0, 0.28);
}

.launcher-art {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.launcher-label {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.launcher-eyebrow {
  font: 400 15px var(--font-ui);
  letter-spacing: 6px;
  color: var(--brass-muted);
}

.launcher-title {
  font: 400 88px var(--font-serif);
  line-height: 1;
  color: var(--ink-text);
}

/* ---------- Feature / requirements / install sections ---------- */

.section {
  border-top: 1px solid var(--brass);
}

.section-white {
  background: var(--white);
}

.section-inner {
  padding: 88px 48px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 56ch;
}

.section-heading h2 {
  font: 400 44px/1.15 var(--font-serif);
  color: oklch(0.2 0.02 88);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule-light);
}

.feature-card {
  background: var(--white);
  padding: 34px 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-card .eyebrow {
  letter-spacing: 4px;
}

.feature-card h3 {
  font: 400 26px var(--font-serif);
  color: var(--ink-text);
}

.feature-card p {
  font: 400 15px/1.65 var(--font-ui);
  color: var(--text-body);
  text-wrap: pretty;
}

.requirements-inner {
  padding: 88px 48px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.requirements-intro {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.requirements-intro h2 {
  font: 400 40px/1.15 var(--font-serif);
  color: oklch(0.2 0.02 88);
}

.requirements-intro p {
  font: 400 15px/1.65 var(--font-ui);
  color: var(--text-body);
  text-wrap: pretty;
}

.spec-list {
  display: flex;
  flex-direction: column;
}

.spec-row {
  display: flex;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--rule-light-2);
}

.spec-row:last-child {
  border-bottom: 1px solid var(--rule-light-2);
}

.spec-label {
  width: 180px;
  flex: none;
  font: 400 12px var(--font-ui);
  letter-spacing: 3px;
  color: var(--brass-muted);
  padding-top: 3px;
}

.spec-value {
  font: 400 16px var(--font-ui);
  color: var(--ink-soft);
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 34px;
}

.install-step {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.install-step .num {
  font: 400 34px var(--font-serif);
  color: var(--brass);
  line-height: 1;
}

.install-rule {
  width: 100%;
  height: 1px;
  background: var(--brass);
}

.install-step h3 {
  margin-top: 6px;
  font: 400 20px var(--font-serif);
  color: var(--ink-text);
}

.install-step p {
  font: 400 14px/1.6 var(--font-ui);
  color: var(--text-body);
}

.install-step code {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ---------- Final CTA ---------- */

.final-cta {
  background: var(--ink);
}

.final-cta-inner {
  padding: 96px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  text-align: center;
}

.final-cta h2 {
  font: 400 46px/1.15 var(--font-serif);
  color: var(--bone);
  max-width: 20ch;
}

.final-cta p {
  font: 400 17px/1.6 var(--font-ui);
  color: var(--text-body-dark);
  max-width: 52ch;
}

.final-cta-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.final-cta-meta {
  font: 400 13px var(--font-mono);
  color: var(--text-muted-dark);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--ink);
  border-top: 1px solid var(--rule-dark);
}

.footer-inner {
  padding: 30px 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  font: 400 12px var(--font-ui);
  letter-spacing: 3px;
  color: var(--text-muted-dark);
}

.footer-links {
  margin-left: auto;
  display: flex;
  gap: 28px;
}

.footer-links a {
  font: 400 12px var(--font-ui);
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-links a:hover {
  color: var(--bone);
}

/* ---------- Motion ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 110ms;
}

.delay-2 {
  transition-delay: 220ms;
}

.delay-3 {
  transition-delay: 330ms;
}

.delay-4 {
  transition-delay: 440ms;
}

.product-shot-window {
  will-change: transform;
}

.launcher {
  transition: transform 80ms linear;
}

.feature-card,
.install-step {
  transition: transform 200ms ease;
}

.feature-card:hover,
.install-step:hover {
  transform: translateY(-4px);
}

@keyframes ring-pulse {
  0%,
  100% {
    opacity: 0.22;
  }
  50% {
    opacity: 0.5;
  }
}

.ring-pulse {
  animation: ring-pulse 6s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .launcher {
    transition: none;
  }

  .feature-card,
  .install-step {
    transition: none;
  }

  .feature-card:hover,
  .install-step:hover {
    transform: none;
  }

  .ring-pulse {
    animation: none;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 767px) {
  .container,
  .section-inner,
  .requirements-inner {
    padding-left: 24px;
    padding-right: 24px;
  }

  .site-header {
    padding: 0 24px;
    gap: 16px;
  }

  .nav-link:not(.nav-download) {
    display: none;
  }

  .hero {
    padding: 64px 24px 48px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero p {
    font-size: 17px;
  }

  .section-heading h2,
  .requirements-intro h2 {
    font-size: 30px;
  }

  .features-grid,
  .install-grid {
    grid-template-columns: 1fr;
  }

  .requirements-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .spec-row {
    flex-direction: column;
    gap: 6px;
  }

  .spec-label {
    width: auto;
    padding-top: 0;
  }

  .final-cta h2 {
    font-size: 34px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    margin-left: 0;
    gap: 20px;
  }
}