/* ==========================================================================
   RYVON LABS — styles.css
   1.  Design tokens
   2.  Reset & base
   3.  Typography primitives
   4.  Layout primitives
   5.  Buttons & links
   6.  Decorative systems (grid field, angular planes)
   7.  Header & navigation
   8.  Hero
   9.  Sections
   10. Footer
   11. Reveal animations
   12. Responsive
   ========================================================================== */

/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */
:root {
  /* Brand palette */
  --c-black:        #0A0A0B;
  --c-black-soft:   #111113;
  --c-white:        #FFFFFF;
  --c-offwhite:     #F6F6F7;
  --c-border:       #E5E5E7;
  --c-muted:        #71717A;
  --c-indigo:       #4338CA;
  --c-indigo-bright:#4F46E5;

  /* Derived neutrals */
  --c-border-soft:  #EFEFF1;
  --c-border-dark:  rgba(255, 255, 255, 0.12);
  --c-border-dark-soft: rgba(255, 255, 255, 0.07);
  --c-muted-dark:   rgba(255, 255, 255, 0.60);

  /* Semantic */
  --bg:             var(--c-white);
  --fg:             var(--c-black);

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Helvetica Neue", Arial, sans-serif;

  --fs-micro:   0.75rem;                              /* 12px labels     */
  --fs-sm:      0.875rem;                             /* 14px            */
  --fs-base:    1rem;                                 /* 16px            */
  --fs-lede:    clamp(1.0625rem, 0.98rem + 0.42vw, 1.3125rem);
  --fs-h3:      clamp(1.125rem, 1.06rem + 0.3vw,  1.3125rem);
  --fs-h2:      clamp(2rem,    1.55rem + 2.2vw,   3.25rem);
  --fs-display: clamp(2.25rem, 1.6rem + 3.1vw,    4rem);
  --fs-hero:    clamp(2.75rem, 1.65rem + 5.1vw,   6rem);

  --lh-tight:   1.04;
  --lh-snug:    1.2;
  --lh-body:    1.65;

  --ls-hero:    -0.035em;
  --ls-display: -0.03em;
  --ls-h2:      -0.025em;
  --ls-h3:      -0.012em;
  --ls-label:   0.16em;

  /* Spacing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;

  /* Section rhythm: 64px mobile → 160px desktop */
  --section-y: clamp(4rem, 2.2rem + 8vw, 10rem);

  /* Layout */
  --container:  1280px;
  --container-pad: clamp(1.25rem, 0.6rem + 2.4vw, 3rem);
  --header-h:   72px;

  /* Borders & radii — rounded corners used sparingly */
  --radius-sm:  4px;
  --radius:     8px;
  --radius-lg:  14px;
  --border:     1px solid var(--c-border);

  /* Motion */
  --ease:        cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast:      160ms var(--ease);
  --t-base:      260ms var(--ease);
  --t-slow:      560ms var(--ease-out);

  /* Angular motif — the diagonal cut carried through from the logo */
  --angle: 24deg;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-nav-open { overflow: hidden; }

h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--c-indigo-bright);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection { background: var(--c-indigo); color: var(--c-white); }

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: -100px;
  z-index: 200;
  padding: var(--sp-3) var(--sp-5);
  background: var(--c-black);
  color: var(--c-white);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  transition: top var(--t-base);
}
.skip-link:focus { top: var(--sp-4); }

/* ==========================================================================
   3. TYPOGRAPHY PRIMITIVES
   ========================================================================== */
.eyebrow {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
/* Small angular tick, echoing the logo's diagonal cut */
.eyebrow::before {
  content: "";
  width: 14px;
  height: 7px;
  background: var(--c-indigo);
  clip-path: polygon(0 0, 100% 0, 78% 100%, 0 100%);
  flex: none;
}
.eyebrow--light { color: var(--c-muted-dark); }
.eyebrow--light::before { background: var(--c-indigo-bright); }

.display {
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-display);
  font-weight: 600;
  text-wrap: balance;
}

.h2 {
  font-size: var(--fs-h2);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-h2);
  font-weight: 600;
  text-wrap: balance;
}
.h2--light { color: var(--c-white); }

.lede {
  font-size: var(--fs-lede);
  line-height: 1.55;
  color: var(--c-muted);
  max-width: 62ch;
}
.lede--light { color: var(--c-muted-dark); }

/* ==========================================================================
   4. LAYOUT PRIMITIVES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section__head { margin-bottom: clamp(2.5rem, 1.5rem + 3vw, 4.5rem); }

.section__head--split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  align-items: end;
}

.section__head .eyebrow + .h2 { margin-top: var(--sp-5); }

.section__note {
  color: var(--c-muted);
  font-size: var(--fs-base);
  max-width: 44ch;
}

/* Hairline separators between light sections */
.section--focus,
.section--principles,
.section--products { border-top: var(--border); }

/* ==========================================================================
   5. BUTTONS & LINKS
   ========================================================================== */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--c-black);
  --btn-bd: var(--c-border);

  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.875rem 1.375rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: -0.005em;
  white-space: nowrap;
  transition: background var(--t-base), color var(--t-base),
              border-color var(--t-base), transform var(--t-fast);
}
.btn--sm { padding: 0.625rem 1rem; }

.btn--primary {
  --btn-bg: var(--c-indigo);
  --btn-fg: var(--c-white);
  --btn-bd: var(--c-indigo);
}
.btn--primary:hover { --btn-bg: var(--c-indigo-bright); --btn-bd: var(--c-indigo-bright); }

.btn--dark {
  --btn-bg: var(--c-black);
  --btn-fg: var(--c-white);
  --btn-bd: var(--c-black);
}
.btn--dark:hover { --btn-bg: var(--c-black-soft); }

.btn--ghost { --btn-bg: transparent; }
.btn--ghost:hover { --btn-bd: var(--c-black); background: var(--c-offwhite); }

.btn:active { transform: translateY(1px); }

.btn__arrow {
  display: inline-block;
  transition: transform var(--t-base);
}
.btn:hover .btn__arrow,
.link-arrow:hover .btn__arrow { transform: translateX(4px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-indigo);
  padding-block: var(--sp-2);
}
.link-arrow:hover { color: var(--c-indigo-bright); }

/* ==========================================================================
   6. DECORATIVE SYSTEMS
   ========================================================================== */

/* Fine technical grid, faded at the edges */
.grid-field {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right,  var(--c-border-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--c-border-soft) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 35%, #000 15%, transparent 78%);
          mask-image: radial-gradient(ellipse 90% 70% at 50% 35%, #000 15%, transparent 78%);
}
.grid-field--dark {
  background-image:
    linear-gradient(to right,  var(--c-border-dark-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--c-border-dark-soft) 1px, transparent 1px);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 70% 40%, #000 5%, transparent 72%);
          mask-image: radial-gradient(ellipse 80% 80% at 70% 40%, #000 5%, transparent 72%);
}

/* Angular planes — cropped parallelograms drawn from the logo's geometry */
.shape {
  position: absolute;
  display: block;
}
.shape--a,
.shape--b,
.shape--c {
  clip-path: polygon(22% 0, 100% 0, 78% 100%, 0 100%);
}
.shape--line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-border), transparent);
}

/* ==========================================================================
   7. HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--t-base), border-color var(--t-base),
              backdrop-filter var(--t-base);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.78);
  border-bottom-color: var(--c-border);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
          backdrop-filter: saturate(180%) blur(14px);
}

/* The scrim sits behind the header, so a translucent bar would read as gray
   while the mobile menu is open. Go fully opaque instead. */
body.is-nav-open .site-header {
  background: var(--c-white);
  border-bottom-color: transparent;
  -webkit-backdrop-filter: none;
          backdrop-filter: none;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

/* Clear space is preserved around the logo — never crop or restyle the asset. */
.brand { display: inline-flex; align-items: center; padding: var(--sp-2) 0; }
.brand__logo {
  height: 26px;
  width: auto;
  transition: opacity var(--t-base);
}
.brand:hover .brand__logo { opacity: 0.72; }

.nav { display: flex; align-items: center; gap: var(--sp-7); }
.nav__list { display: flex; align-items: center; gap: var(--sp-6); }

.nav__link {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-muted);
  padding-block: var(--sp-2);
  transition: color var(--t-base);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 1px;
  background: var(--c-indigo);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base);
}
.nav__link:hover { color: var(--c-black); }
.nav__link:hover::after { transform: scaleX(1); }

/* Mobile toggle */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  place-items: center;
  align-content: center;
  justify-items: center;
  gap: 6px;
  border-radius: var(--radius-sm);
}
.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--c-black);
  transition: transform var(--t-base), opacity var(--t-fast);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child {
  transform: translateY(3.75px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(10, 10, 11, 0.35);
  opacity: 0;
  transition: opacity var(--t-base);
}
.nav-scrim.is-visible { opacity: 1; }

/* ==========================================================================
   8. HERO
   ========================================================================== */
.hero {
  position: relative;
  isolation: isolate;
  padding-top: calc(var(--header-h) + clamp(4rem, 2rem + 9vw, 9rem));
  padding-bottom: clamp(4.5rem, 2rem + 9vw, 9.5rem);
  overflow: hidden;
  background: var(--c-white);
  border-bottom: var(--border);
}

.hero__canvas { position: absolute; inset: 0; z-index: -1; }

.hero__glow {
  position: absolute;
  top: -18%;
  left: 50%;
  width: min(1100px, 130%);
  aspect-ratio: 1.5 / 1;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center,
              rgba(67, 56, 202, 0.13) 0%,
              rgba(67, 56, 202, 0.05) 38%,
              transparent 70%);
}

.hero__shapes { position: absolute; inset: 0; }

.shape--a {
  top: 14%;
  right: -6%;
  width: clamp(220px, 30vw, 460px);
  height: clamp(150px, 21vw, 320px);
  background: linear-gradient(140deg, var(--c-black) 0%, #26262b 100%);
  opacity: 0.055;
  animation: drift-a 22s var(--ease) infinite alternate;
}
.shape--b {
  top: 46%;
  right: 6%;
  width: clamp(120px, 16vw, 240px);
  height: clamp(70px, 9vw, 130px);
  background: var(--c-indigo);
  opacity: 0.10;
  animation: drift-b 18s var(--ease) infinite alternate;
}
.shape--c {
  top: 8%;
  left: -8%;
  width: clamp(160px, 22vw, 340px);
  height: clamp(110px, 15vw, 230px);
  background: var(--c-black);
  opacity: 0.035;
  animation: drift-a 26s var(--ease) infinite alternate-reverse;
}
.shape--line-1 { top: 32%; left: 0; right: 0; opacity: 0.9; }
.shape--line-2 { top: 68%; left: 0; right: 0; opacity: 0.55; }

@keyframes drift-a {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-22px, 18px, 0); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(16px, -22px, 0); }
}

.hero__inner { position: relative; }

.hero__title {
  margin-top: var(--sp-6);
  font-size: var(--fs-hero);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-hero);
  font-weight: 600;
  max-width: 16ch;
  text-wrap: balance;
}

.hero__lede { margin-top: var(--sp-6); max-width: 56ch; }

.hero__actions {
  margin-top: var(--sp-7);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.hero__meta {
  margin-top: clamp(3rem, 1.5rem + 5vw, 6rem);
  padding-top: var(--sp-5);
  border-top: var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-7);
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-muted);
}
.hero__meta li { display: flex; align-items: center; gap: var(--sp-3); }
.hero__meta li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--c-indigo);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  transform: rotate(45deg);
  flex: none;
}

/* ==========================================================================
   9. SECTIONS
   ========================================================================== */

/* --- 9.1 Introduction ---------------------------------------------------- */
.section--intro { background: var(--c-white); }

.intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 1rem + 3vw, 4rem);
}
.intro .display { max-width: 15ch; }
.intro__body {
  display: grid;
  gap: var(--sp-5);
  color: var(--c-muted);
  font-size: 1.0625rem;
  max-width: 60ch;
}

/* --- 9.2 Areas of focus -------------------------------------------------- */
.section--focus { background: var(--c-offwhite); }

.focus-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--border);
  border-left: var(--border);
  background: var(--c-border);
  gap: 1px;
}

.focus-card {
  position: relative;
  padding: clamp(1.75rem, 1.2rem + 1.6vw, 2.5rem);
  padding-bottom: clamp(2.5rem, 1.8rem + 2vw, 3.5rem);
  background: var(--c-white);
  border-right: var(--border);
  border-bottom: var(--border);
  margin: 0 -1px -1px 0;
  transition: background var(--t-base), transform var(--t-base);
}
.focus-card:hover { background: var(--c-offwhite); }

.focus-card__num {
  display: block;
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: var(--ls-label);
  color: var(--c-muted);
  font-variant-numeric: tabular-nums;
  transition: color var(--t-base);
}
.focus-card:hover .focus-card__num { color: var(--c-indigo); }

.focus-card__title {
  margin-top: var(--sp-5);
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: var(--ls-h3);
  line-height: 1.3;
}

.focus-card__text {
  margin-top: var(--sp-3);
  color: var(--c-muted);
  font-size: var(--fs-sm);
  line-height: 1.6;
  max-width: 34ch;
}

/* Angular marker that extends on hover */
.focus-card__mark {
  position: absolute;
  left: clamp(1.75rem, 1.2rem + 1.6vw, 2.5rem);
  bottom: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  width: 22px;
  height: 6px;
  background: var(--c-black);
  clip-path: polygon(0 0, 100% 0, 78% 100%, 0 100%);
  opacity: 0.18;
  transition: width var(--t-base), background var(--t-base), opacity var(--t-base);
}
.focus-card:hover .focus-card__mark {
  width: 48px;
  background: var(--c-indigo);
  opacity: 1;
}

/* --- 9.3 Principles ------------------------------------------------------ */
.section--principles { background: var(--c-white); }

.principles { border-top: var(--border); }

.principle {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  padding-block: clamp(1.75rem, 1.2rem + 1.8vw, 2.75rem);
  border-bottom: var(--border);
  transition: background var(--t-base);
}
.principle:hover { background: var(--c-offwhite); }

.principle__num {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: var(--ls-label);
  color: var(--c-muted);
  font-variant-numeric: tabular-nums;
  padding-top: 0.35em;
  transition: color var(--t-base);
}
.principle:hover .principle__num { color: var(--c-indigo); }

.principle__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  align-items: baseline;
}

.principle__title {
  font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem);
  font-weight: 600;
  letter-spacing: var(--ls-h3);
  line-height: 1.25;
}

.principle__text {
  color: var(--c-muted);
  font-size: var(--fs-base);
  max-width: 48ch;
}

/* --- 9.4 Products -------------------------------------------------------- */
.section--products { background: var(--c-offwhite); }

.products {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 0.6rem + 1.2vw, 1.5rem);
}

.product-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: clamp(1.75rem, 1.1rem + 2.2vw, 3rem);
  background: var(--c-white);
  border: var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--t-base), box-shadow var(--t-slow),
              transform var(--t-slow);
}
.product-card:hover {
  border-color: #D4D4D8;
  box-shadow: 0 18px 48px -28px rgba(10, 10, 11, 0.28);
  transform: translateY(-2px);
}

.product-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: clamp(2.5rem, 1.5rem + 4vw, 5rem);
}

.product-card__badge {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-indigo);
  padding: 0.375rem 0.625rem;
  border: 1px solid rgba(67, 56, 202, 0.22);
  border-radius: 999px;
  background: rgba(67, 56, 202, 0.05);
}
.product-card--empty .product-card__badge {
  color: var(--c-muted);
  border-color: var(--c-border);
  background: var(--c-offwhite);
}

.product-card__status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.product-card__status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-indigo);
}

.product-card__name {
  font-size: clamp(1.75rem, 1.3rem + 1.9vw, 2.5rem);
  font-weight: 600;
  letter-spacing: var(--ls-h2);
  line-height: 1.15;
}
/* The empty state is a quieter voice than a live product. */
.product-card__name--muted {
  font-size: clamp(1.375rem, 1.15rem + 0.95vw, 1.75rem);
  font-weight: 500;
  letter-spacing: var(--ls-h3);
  color: var(--c-muted);
  max-width: 22ch;
}

.product-card__text {
  margin-top: var(--sp-4);
  color: var(--c-muted);
  max-width: 46ch;
  font-size: 1.0625rem;
}

.product-card__foot {
  margin-top: auto;
  padding-top: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.product-card__meta {
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-muted);
}

/* Cropped angular plane in the card corner */
.product-card__plane {
  position: absolute;
  top: -40px;
  right: -70px;
  width: 260px;
  height: 200px;
  background: linear-gradient(150deg, var(--c-indigo), transparent 70%);
  clip-path: polygon(28% 0, 100% 0, 72% 100%, 0 100%);
  opacity: 0.07;
  transition: opacity var(--t-slow), transform var(--t-slow);
  pointer-events: none;
}
.product-card:hover .product-card__plane {
  opacity: 0.12;
  transform: translate(-8px, 6px);
}

.product-card--empty {
  background: transparent;
  border-style: dashed;
  border-color: #DCDCE0;
}
.product-card--empty:hover {
  box-shadow: none;
  transform: none;
  border-color: #C9C9CF;
}

/* --- 9.5 Vision (dark) --------------------------------------------------- */
.section--vision {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--c-black);
  color: var(--c-white);
}
.vision__canvas { position: absolute; inset: 0; z-index: -1; }
.vision__glow {
  position: absolute;
  right: -10%;
  top: 10%;
  width: min(820px, 90%);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at center,
              rgba(79, 70, 229, 0.22) 0%,
              rgba(67, 56, 202, 0.08) 40%,
              transparent 68%);
}

.vision__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(3rem, 1.5rem + 6vw, 6rem);
  align-items: center;
}
.vision__copy .eyebrow + .h2 { margin-top: var(--sp-5); }
.vision__copy .lede { margin-top: var(--sp-5); }

/* Structural diagram */
.diagram {
  border: 1px solid var(--c-border-dark);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  background: linear-gradient(160deg,
              rgba(255, 255, 255, 0.045),
              rgba(255, 255, 255, 0.012));
}

.diagram__root {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding-bottom: var(--sp-5);
}
.diagram__dot {
  width: 12px;
  height: 6px;
  background: var(--c-indigo-bright);
  clip-path: polygon(0 0, 100% 0, 78% 100%, 0 100%);
  flex: none;
}
.diagram__root-label {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-white);
}

/* Builds → Operates → Grows */
.diagram__verbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding-bottom: var(--sp-6);
  margin-bottom: var(--sp-6);
  border-bottom: 1px solid var(--c-border-dark);
}
.diagram__verbs li {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--c-muted-dark);
}
.diagram__verbs li:not(:last-child)::after {
  content: "";
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, var(--c-indigo-bright), var(--c-border-dark));
}

/* Branch list with a hairline spine */
.diagram__branches { position: relative; padding-left: var(--sp-5); }
.diagram__branches::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 22px;
  width: 1px;
  background: var(--c-border-dark);
}

.diagram__branch {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-4);
  padding: var(--sp-4) 0;
  transition: color var(--t-base);
}
.diagram__branch::before {
  content: "";
  position: absolute;
  left: calc(var(--sp-5) * -1);
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--c-border-dark);
}
.diagram__branch::after {
  content: "";
  position: absolute;
  left: calc(var(--sp-5) * -1 + 12px);
  top: calc(50% - 2.5px);
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.35);
  transform: rotate(45deg);
}
.diagram__branch--active::after { background: var(--c-indigo-bright); }

.diagram__branch-name {
  font-size: 1.0625rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.92);
}
.diagram__branch--active .diagram__branch-name { color: var(--c-white); }

.diagram__branch-meta {
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-muted-dark);
}

/* --- 9.6 Contact --------------------------------------------------------- */
.section--contact {
  background: var(--c-white);
  border-bottom: var(--border);
}
.contact { max-width: 820px; }
.contact .display { margin-top: var(--sp-5); max-width: 16ch; }
.contact__lede { margin-top: var(--sp-5); }

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  padding: var(--sp-3) clamp(1rem, 0.6rem + 1.4vw, 1.5rem);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  background: var(--c-white);
  box-shadow: 0 1px 2px rgba(10, 10, 11, 0.04);
  transition: border-color var(--t-base), box-shadow var(--t-base),
              transform var(--t-base);
}
.contact__email:hover {
  border-color: var(--c-indigo);
  box-shadow: 0 12px 28px -14px rgba(67, 56, 202, 0.45);
  transform: translateY(-2px);
}

.contact__email-icon {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 3rem;
  height: 3rem;
  color: var(--c-white);
  background: var(--c-indigo);
  border-radius: var(--radius);
  transition: background var(--t-base);
}
.contact__email:hover .contact__email-icon {
  background: var(--c-indigo-bright);
}

.contact__email-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.2;
}
.contact__email-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.contact__email-address {
  font-size: clamp(1.15rem, 0.9rem + 1.1vw, 1.6rem);
  font-weight: 600;
  letter-spacing: var(--ls-h3);
  color: var(--c-black);
}

.contact__email-arrow {
  margin-left: var(--sp-2);
  font-size: 1.25rem;
  color: var(--c-muted);
  transition: transform var(--t-base), color var(--t-base);
}
.contact__email:hover .contact__email-arrow {
  color: var(--c-indigo);
  transform: translateX(4px);
}

.contact__actions {
  margin-top: clamp(2rem, 1.2rem + 2vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

/* ==========================================================================
   10. FOOTER
   ========================================================================== */
.site-footer {
  background: var(--c-black);
  color: var(--c-white);
  padding-top: clamp(3.5rem, 2rem + 5vw, 6rem);
  padding-bottom: var(--sp-7);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 1.5rem + 4vw, 5rem);
  padding-bottom: clamp(2.5rem, 1.5rem + 3vw, 4rem);
}

.site-footer__logo { height: 24px; width: auto; }

.site-footer__desc {
  margin-top: var(--sp-5);
  color: var(--c-muted-dark);
  font-size: var(--fs-sm);
  max-width: 38ch;
  line-height: 1.7;
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--sp-6);
}

.site-footer__heading {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-white);
  margin-bottom: var(--sp-4);
}

.site-footer__col ul { display: grid; gap: var(--sp-3); }
.site-footer__col a {
  font-size: var(--fs-sm);
  color: var(--c-muted-dark);
  transition: color var(--t-base);
}
.site-footer__col a:hover { color: var(--c-white); }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-border-dark);
  font-size: var(--fs-micro);
  color: var(--c-muted-dark);
}
.site-footer__tagline { letter-spacing: 0.02em; }

/* ==========================================================================
   11. REVEAL ANIMATIONS
   Only applied when JS is present, so content is never hidden without it.
   ========================================================================== */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--t-slow), transform var(--t-slow);
  transition-delay: calc(var(--reveal-delay, 0) * 80ms);
}
.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   12. RESPONSIVE
   ========================================================================== */

/* --- ≥ 600px: two-column focus grid -------------------------------------- */
@media (min-width: 600px) {
  .focus-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- ≥ 768px: tablet ----------------------------------------------------- */
@media (min-width: 768px) {
  :root { --header-h: 76px; }

  .principle {
    grid-template-columns: 72px 1fr;
    gap: var(--sp-5);
    align-items: start;
  }

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

  .site-footer__top { grid-template-columns: 1.1fr 1.6fr; }

  .site-footer__bottom { flex-wrap: nowrap; }
}

/* --- ≥ 960px: small desktop ---------------------------------------------- */
@media (min-width: 960px) {
  .section__head--split { grid-template-columns: 1fr auto; }

  .intro { grid-template-columns: 1.05fr 1fr; align-items: start; }

  .principle { grid-template-columns: 96px 1fr; }
  .principle__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: var(--sp-7);
  }

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

/* --- ≥ 1200px: full desktop ---------------------------------------------- */
@media (min-width: 1200px) {
  .focus-grid { grid-template-columns: repeat(4, 1fr); }
  .vision__inner { grid-template-columns: 1.05fr 0.95fr; }
}

/* --- < 900px: mobile navigation ------------------------------------------ */
@media (max-width: 899px) {
  .nav-toggle { display: grid; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    z-index: 95;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--sp-5) var(--container-pad) var(--sp-6);
    background: var(--c-white);
    border-bottom: var(--border);

    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--t-base), transform var(--t-base),
                visibility var(--t-base);
  }
  .nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__link {
    display: block;
    padding: var(--sp-4) 0;
    font-size: 1.0625rem;
    color: var(--c-black);
    border-bottom: 1px solid var(--c-border-soft);
  }
  .nav__link::after { display: none; }

  .nav__cta {
    margin-top: var(--sp-5);
    justify-content: center;
    padding-block: 0.875rem;
  }
}

/* --- < 640px: quieter hero decoration ------------------------------------- */
@media (max-width: 639px) {
  /* Less canvas to work with — keep the planes from crowding the headline. */
  .shape--a { opacity: 0.03; }
  .shape--b { opacity: 0.06; }
  .shape--c { opacity: 0.02; }
  .grid-field { background-size: 56px 56px; }
}

/* --- Narrow phones -------------------------------------------------------- */
@media (max-width: 420px) {
  .br-lg { display: none; }
  .hero__actions .btn,
  .contact__actions .btn { width: 100%; justify-content: center; }

  .contact__email { width: 100%; gap: var(--sp-3); }
  .contact__email-arrow { margin-left: auto; }
  .contact__email-address { word-break: break-word; }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] { opacity: 1; transform: none; }
}