/* ==========================================================================
   InteliCop - design system v2
   Concept: "signal on graphite" - a lab-instrument dark mode (teal-graphite
   ground, phosphor-mint signal accent) paired with a warm-paper light mode.
   One accent hue throughout, shifted in lightness/saturation per theme for
   contrast - never a naive invert. Serif display (Fraunces) + humanist sans
   body (Work Sans) + monospace utility face (IBM Plex Mono) for anything
   that reads as data or system output: eyebrows, stats, nav tag.
   ========================================================================== */

:root {
  /* ---- Light theme (default/base) ---- */
  --bg: #fbfaf4;
  --bg-raised: #ffffff;
  --bg-sunken: #f1efe4;
  --ink: #14201c;
  --ink-dim: #52605a;
  --ink-faint: #7c8983;
  --line: #e1dfd2;
  --accent: #1f7a5c;
  --accent-ink: #ffffff;
  --accent-soft: rgba(31, 122, 92, 0.1);
  --shadow: 0 24px 48px -28px rgba(20, 32, 28, 0.22);

  --font-display: "Fraunces", "Iowan Old Style", serif;
  --font-body: "Work Sans", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --container: 1160px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1512;
    --bg-raised: #161f1b;
    --bg-sunken: #0a0f0d;
    --ink: #f3f1e8;
    --ink-dim: #abb6af;
    --ink-faint: #6e7a73;
    --line: rgba(243, 241, 232, 0.11);
    --accent: #4fcb9c;
    --accent-ink: #0a140f;
    --accent-soft: rgba(79, 203, 156, 0.14);
    --shadow: 0 24px 60px -28px rgba(0, 0, 0, 0.55);
  }
}
:root[data-theme="dark"] {
  --bg: #0e1512;
  --bg-raised: #161f1b;
  --bg-sunken: #0a0f0d;
  --ink: #f3f1e8;
  --ink-dim: #abb6af;
  --ink-faint: #6e7a73;
  --line: rgba(243, 241, 232, 0.11);
  --accent: #4fcb9c;
  --accent-ink: #0a140f;
  --accent-soft: rgba(79, 203, 156, 0.14);
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, 0.55);
}
:root[data-theme="light"] {
  --bg: #fbfaf4;
  --bg-raised: #ffffff;
  --bg-sunken: #f1efe4;
  --ink: #14201c;
  --ink-dim: #52605a;
  --ink-faint: #7c8983;
  --line: #e1dfd2;
  --accent: #1f7a5c;
  --accent-ink: #ffffff;
  --accent-soft: rgba(31, 122, 92, 0.1);
  --shadow: 0 24px 48px -28px rgba(20, 32, 28, 0.22);
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition:
    background 0.3s var(--ease),
    color 0.3s var(--ease);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  text-wrap: balance;
  margin: 0 0 0.5em;
  color: var(--ink);
}
h1 {
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1.1em;
  max-width: 62ch;
}
p:last-child {
  margin-bottom: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
button {
  font: inherit;
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: 116px 0;
  position: relative;
}
.section.tight {
  padding: 80px 0;
}
.section.raised {
  background: var(--bg-raised);
}
.section.sunken {
  background: var(--bg-sunken);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section-head {
  max-width: 620px;
  margin: 0 0 58px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-head.center .eyebrow {
  justify-content: center;
}
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 38px);
}
.section-head p {
  font-size: 17.5px;
  color: var(--ink-dim);
}
.section-head.center p {
  margin-left: auto;
  margin-right: auto;
}

.stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------------------------------- Nav ---------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 20px 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition:
    border-color 0.3s var(--ease),
    padding 0.3s var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--line);
  padding: 14px 0;
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
}
.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 7px;
  overflow: hidden;
}
.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  color: var(--ink);
  white-space: nowrap;
}
.brand-tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 2px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-dim);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle,
.nav-toggle {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    color 0.2s,
    border-color 0.2s;
}
.theme-toggle:hover,
.nav-toggle:hover {
  color: var(--ink);
  border-color: var(--ink-faint);
}
.theme-toggle svg,
.nav-toggle svg {
  width: 17px;
  height: 17px;
}
.theme-toggle .sun {
  display: none;
}
:root[data-theme="dark"] .theme-toggle .moon {
  display: none;
}
:root[data-theme="dark"] .theme-toggle .sun {
  display: block;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .moon {
    display: none;
  }
  :root:not([data-theme="light"]) .theme-toggle .sun {
    display: block;
  }
}
.nav-toggle {
  display: none;
}

/* --------------------------------- Buttons -------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    border-color 0.2s,
    color 0.2s,
    background 0.2s;
  white-space: nowrap;
}
.btn svg {
  width: 15px;
  height: 15px;
}
.btn-solid {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px var(--accent-soft);
}
.btn-line {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-line:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-lg {
  padding: 15px 28px;
  font-size: 15.5px;
}

/* ---------------------------------- Hero ---------------------------------- */
.hero {
  position: relative;
  padding: 76px 0 100px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}
.hero-copy h1 {
  font-size: clamp(36px, 4.6vw, 58px);
}
.hero-copy h1 .accent-word {
  color: var(--accent);
}
.hero-copy .lede {
  font-size: 18.5px;
  color: var(--ink-dim);
  max-width: 46ch;
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-canvas-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--bg-sunken);
  overflow: hidden;
}
.hero-canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.hero-canvas-label {
  position: absolute;
  left: 16px;
  bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 7px;
}
.hero-canvas-label .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 36px;
  padding-top: 40px;
  margin-top: 46px;
  border-top: 1px solid var(--line);
}
.stat-strip .stat b {
  display: block;
  font-size: 25px;
  margin-bottom: 3px;
}
.stat-strip .stat span {
  font-size: 12.5px;
  color: var(--ink-faint);
}

/* ------------------------------ Card grids -------------------------------- */
.grid {
  display: grid;
  gap: 20px;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}
.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 18px;
}
.card-icon svg {
  width: 20px;
  height: 20px;
}
.card h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16.5px;
  margin-bottom: 8px;
}
.card p {
  font-size: 14.5px;
  color: var(--ink-dim);
  margin-bottom: 0;
}

/* ------------------------------ Plain list (non-sequential) --------------- */
.trait-list {
  display: grid;
  gap: 26px;
}
.trait-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 16px;
}
.trait-item svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  margin-top: 3px;
}
.trait-item h4 {
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  margin-bottom: 4px;
}
.trait-item p {
  font-size: 14.5px;
  color: var(--ink-dim);
  margin-bottom: 0;
}

/* ------------------------------ Sequential steps --------------------------- */
.step-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  counter-reset: step;
}
.step-item {
  position: relative;
  padding: 0 22px 0 0;
  border-right: 1px solid var(--line);
}
.step-item:last-child {
  border-right: none;
  padding-right: 0;
}
.step-item:not(:first-child) {
  padding-left: 22px;
}
.step-item .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 14px;
  display: block;
}
.step-item h3 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.step-item p {
  font-size: 14px;
  color: var(--ink-dim);
  margin-bottom: 0;
}

/* ------------------------------ Product feature block ---------------------- */
.product-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-raised);
}
.product-block-copy {
  padding: 48px;
}
.product-block-side {
  border-left: 1px solid var(--line);
  background: var(--bg-sunken);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}
.status-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.status-line .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.product-block h3 {
  font-size: 25px;
  margin-bottom: 12px;
}
.product-block .lede {
  color: var(--ink-dim);
  font-size: 15.5px;
  margin-bottom: 24px;
}
.check-list {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}
.check-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--ink-dim);
}
.check-list svg {
  width: 15px;
  height: 15px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}
.product-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.side-fact {
  border-left: 2px solid var(--accent);
  padding-left: 14px;
}
.side-fact b {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  margin-bottom: 2px;
}
.side-fact span {
  font-size: 12.5px;
  color: var(--ink-faint);
}

.next-block {
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  padding: 48px 30px;
  color: var(--ink-faint);
}
.next-block svg {
  width: 26px;
  height: 26px;
  opacity: 0.7;
}
.next-block b {
  color: var(--ink-dim);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
}
.next-block span {
  font-size: 13px;
  max-width: 32ch;
}

/* --------------------------------- CTA band -------------------------------- */
.cta-band {
  background: var(--bg-sunken);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 60px;
  text-align: center;
}
.cta-band h2 {
  font-size: clamp(25px, 3vw, 32px);
  margin-bottom: 12px;
}
.cta-band p {
  color: var(--ink-dim);
  max-width: 480px;
  margin: 0 auto 28px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --------------------------------- Footer --------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 60px 0 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.footer-brand p {
  color: var(--ink-faint);
  font-size: 13.5px;
  max-width: 280px;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
.footer-col ul {
  display: grid;
  gap: 11px;
}
.footer-col a {
  font-size: 14px;
  color: var(--ink-dim);
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  color: var(--ink-faint);
}
.footer-bottom .socials {
  display: flex;
  gap: 12px;
}
.footer-bottom .socials a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-dim);
  transition: all 0.2s;
}
.footer-bottom .socials a:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.footer-bottom .socials svg {
  width: 14px;
  height: 14px;
}

/* --------------------------------- Aside note -------------------------------- */
.name-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: flex-start;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-sunken);
}
.name-note svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  margin-top: 2px;
}
.name-note p {
  font-size: 14.5px;
  color: var(--ink-dim);
  margin: 0;
}
.name-note b {
  color: var(--ink);
}

/* -------------------------------- Reveal fx -------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
[data-reveal-group] > * {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.6s var(--ease),
    transform 0.6s var(--ease);
}
[data-reveal-group].is-visible > * {
  opacity: 1;
  transform: none;
}
[data-reveal-group].is-visible > *:nth-child(1) {
  transition-delay: 0.02s;
}
[data-reveal-group].is-visible > *:nth-child(2) {
  transition-delay: 0.08s;
}
[data-reveal-group].is-visible > *:nth-child(3) {
  transition-delay: 0.14s;
}
[data-reveal-group].is-visible > *:nth-child(4) {
  transition-delay: 0.2s;
}
[data-reveal-group].is-visible > *:nth-child(5) {
  transition-delay: 0.26s;
}
[data-reveal-group].is-visible > *:nth-child(6) {
  transition-delay: 0.32s;
}
[data-reveal-group].is-visible > *:nth-child(7) {
  transition-delay: 0.38s;
}
[data-reveal-group].is-visible > *:nth-child(8) {
  transition-delay: 0.44s;
}
[data-reveal-group].is-visible > *:nth-child(9) {
  transition-delay: 0.5s;
}

.code-line {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-sunken);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  overflow-x: auto;
  color: var(--ink-dim);
}

.breadcrumb-row {
  font-size: 13px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  margin-bottom: 30px;
}
.breadcrumb-row a {
  color: var(--ink-dim);
}
.breadcrumb-row a:hover {
  color: var(--accent);
}

/* --------------------------------- Responsive ------------------------------ */
@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-canvas-wrap {
    max-width: 420px;
    margin: 0 auto;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .product-block {
    grid-template-columns: 1fr;
  }
  .product-block-side {
    border-left: none;
    border-top: 1px solid var(--line);
  }
  .step-row {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 30px;
  }
  .step-item {
    border-right: none !important;
    padding: 0 !important;
  }
}

@media (max-width: 760px) {
  .nav-links {
    display: none;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 1px;
    padding: 14px 28px 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .nav-links.mobile-open a {
    padding: 10px 0;
    width: 100%;
  }
  .nav-toggle {
    display: flex;
  }
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .stat-strip {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 26px;
  }
  .step-row {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 78px 0;
  }
  .cta-band {
    padding: 40px 24px;
  }
  .product-block-copy {
    padding: 32px 24px;
  }
  .name-note {
    grid-template-columns: 1fr;
  }
}