/* ==========================================================================
   Innoferra — innoferra.ai
   Pure-CSS static stylesheet: no JavaScript, no build step.
   Scroll animations use CSS scroll-driven animations where supported;
   everywhere else, content simply renders visible.
   ========================================================================== */

/* ---- Fonts (self-hosted, variable) ------------------------------------ */
@font-face {
  font-family: 'Inter Variable';
  src: url('assets/fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Space Grotesk Variable';
  src: url('assets/fonts/space-grotesk-latin-wght-normal.woff2') format('woff2-variations');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

/* ---- Design tokens ----------------------------------------------------- */
:root {
  --font-sans: 'Inter Variable', ui-sans-serif, system-ui, sans-serif;
  --font-display: 'Space Grotesk Variable', var(--font-sans);

  /* deep "void" base */
  --void-950: #05070f;
  --void-900: #0a0e1c;
  --void-850: #0d1224;
  --void-800: #121a30;

  /* electric cyan accent */
  --pulse-300: #7ceaff;
  --pulse-400: #3fd9ff;
  --pulse-500: #16c2f0;

  /* warm ember secondary */
  --ember-400: #ffb454;
  --ember-500: #f59e0b;

  /* text (AA on void backgrounds) */
  --mist-100: #eef2fb;
  --mist-300: #c6cfe2;
  --mist-400: #98a4c0;
  --mist-500: #71809f;

  --border-soft: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --max-w: 72rem;
}

/* ---- Reset & base ------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  background: var(--void-950);
  color: var(--mist-300);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

::selection {
  background: var(--pulse-500);
  color: var(--void-950);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  color: var(--mist-100);
  line-height: 1.12;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.wrap {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

section {
  position: relative;
  padding-block: 6rem;
}

section + section::before,
footer::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.eyebrow {
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--pulse-400);
}

.section-head {
  max-width: 48rem;
}

.section-head h2 {
  margin-top: 0.75rem;
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  font-weight: 700;
}

.section-head .lede {
  margin-top: 1.25rem;
  font-size: 1.125rem;
  color: var(--mist-400);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  background: var(--pulse-500);
  color: var(--void-950);
  font-weight: 650;
  text-decoration: none;
  transform: translateY(-300%);
}

.skip-link:focus {
  transform: none;
}

/* ---- Buttons ----------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 999px;
  font-weight: 650;
  font-size: 1rem;
  text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--pulse-500);
  color: var(--void-950);
}

.btn-primary:hover {
  background: var(--pulse-400);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--mist-100);
}

.btn-ghost:hover {
  border-color: rgba(63, 217, 255, 0.5);
  color: var(--pulse-300);
}

/* ---- Header / nav ------------------------------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  background: rgba(5, 7, 15, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  padding-block: 0.85rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
}

.brand-word {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist-100);
}

.brand-word em {
  font-style: normal;
  color: var(--pulse-400);
}

.brand-tag {
  font-size: 0.6875rem;
  font-weight: 550;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  list-style: none;
  padding: 0;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 550;
  color: var(--mist-400);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--mist-100);
}

.nav-links .nav-cta {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: var(--pulse-500);
  color: var(--void-950);
  font-weight: 650;
}

.nav-links .nav-cta:hover {
  background: var(--pulse-400);
  color: var(--void-950);
}

@media (max-width: 44rem) {
  html {
    scroll-padding-top: 8.5rem;
  }

  .brand-tag {
    display: none;
  }

  .nav {
    justify-content: center;
  }

  .nav-links {
    justify-content: center;
  }
}

/* ---- Hero -------------------------------------------------------------- */
.hero {
  overflow: hidden;
  padding-block: 11rem 7rem;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: -10rem;
  left: 50%;
  width: min(1100px, 160vw);
  height: 640px;
  translate: -50% 0;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(22, 194, 240, 0.16), transparent 70%);
  animation: glow-drift 14s ease-in-out infinite alternate;
}

@keyframes glow-drift {
  from { transform: translateY(-12px) scale(1); opacity: 0.75; }
  to   { transform: translateY(18px) scale(1.06); opacity: 1; }
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(124, 234, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 234, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black 40%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent);
}

.hero .wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(22, 194, 240, 0.3);
  border-radius: 999px;
  background: rgba(22, 194, 240, 0.1);
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pulse-300);
}

.hero h1 {
  margin-top: 1.5rem;
  max-width: 56rem;
  font-size: clamp(2.5rem, 7.5vw, 4.75rem);
  font-weight: 700;
  line-height: 1.05;
}

.gradient-text {
  background: linear-gradient(90deg, var(--pulse-300), var(--pulse-400), var(--ember-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin-top: 1.5rem;
  max-width: 42rem;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--mist-400);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2.5rem;
}

.hero-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem;
  width: 100%;
  max-width: 48rem;
  margin-top: 4rem;
}

.hero-cards > div {
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: rgba(10, 14, 28, 0.6);
}

.hero-cards dt {
  font-family: var(--font-display);
  font-weight: 650;
  color: var(--mist-100);
}

.hero-cards dd {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: var(--mist-500);
}

/* ---- Stack (platform diagram) ------------------------------------------ */
.stack-diagram {
  position: relative;
  margin-top: 3.5rem;
}

.beam {
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 1.1rem;
  width: 2px;
  overflow: hidden;
}

.beam-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(to top, var(--ember-500), var(--pulse-500), var(--pulse-300));
}

.beam-particle {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 3px;
  height: 42px;
  translate: -50% 0;
  border-radius: 999px;
  background: var(--pulse-300);
  filter: blur(1px);
  animation: beam-rise 2.8s linear infinite;
}

.beam-particle.alt {
  background: var(--ember-400);
  animation-delay: 1.4s;
}

@keyframes beam-rise {
  0%   { transform: translateY(0); opacity: 0; }
  10%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { transform: translateY(-70vh); opacity: 0; }
}

.stack-layers {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding-left: 3.5rem;
  list-style: none;
  counter-reset: none;
}

.layer {
  position: relative;
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(10, 14, 28, 0.7);
  transition: border-color 0.25s;
}

.layer:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.layer.own {
  border-color: rgba(22, 194, 240, 0.25);
  background: var(--void-850);
}

.layer.own:hover {
  border-color: rgba(63, 217, 255, 0.5);
}

.layer-id {
  position: absolute;
  top: 50%;
  left: -2.95rem;
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  translate: 0 -50%;
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 50%;
  background: var(--void-900);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ember-400);
}

.layer.own .layer-id {
  border-color: rgba(22, 194, 240, 0.4);
  color: var(--pulse-300);
}

.layer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
}

.layer h3 {
  font-size: 1.2rem;
  font-weight: 650;
}

.layer-owner {
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ember-400);
}

.layer.own .layer-owner {
  color: var(--pulse-400);
}

.layer p {
  margin-top: 0.5rem;
  max-width: 44rem;
  font-size: 0.9375rem;
  color: var(--mist-400);
}

.stack-note {
  margin-top: 2rem;
  padding-left: 3.5rem;
  font-size: 0.875rem;
  color: var(--mist-500);
}

.stack-note b {
  color: var(--ember-400);
}

/* ---- Services ----------------------------------------------------------- */
.services-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 3.5rem;
}

@media (min-width: 62rem) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.service {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 2rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(10, 14, 28, 0.7);
  transition: border-color 0.25s;
}

.service:hover {
  border-color: rgba(63, 217, 255, 0.4);
}

.service.alt:hover {
  border-color: rgba(255, 180, 84, 0.4);
}

.service-kicker {
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.service h3 {
  margin-top: 0.75rem;
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  font-weight: 700;
}

.service > p {
  margin-top: 1rem;
  color: var(--mist-400);
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1rem 1.5rem;
  margin: 1.75rem 0 0;
}

.spec-grid > div {
  padding-left: 1rem;
  border-left: 1px solid rgba(22, 194, 240, 0.3);
}

.service.alt .spec-grid > div {
  border-left-color: rgba(245, 158, 11, 0.3);
}

.spec-grid dt {
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.spec-grid dd {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  font-weight: 550;
  color: var(--mist-100);
}

.model-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.model-chips li {
  padding: 0.25rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: var(--void-850);
  font-size: 0.75rem;
  font-weight: 550;
}

.models-label {
  margin-top: 1.75rem;
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.service-foot {
  margin-top: auto;
  padding-top: 2rem;
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pulse-400);
}

.service.alt .service-foot {
  color: var(--ember-400);
}

/* ---- CTA band ----------------------------------------------------------- */
.cta-band {
  padding-block: 4.5rem;
}

.cta-card {
  position: relative;
  overflow: hidden;
  padding: 2.5rem 1.75rem;
  border: 1px solid rgba(22, 194, 240, 0.25);
  border-radius: var(--radius);
  background: var(--void-850);
  text-align: center;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -8rem;
  left: 50%;
  width: min(600px, 120vw);
  height: 16rem;
  translate: -50% 0;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(22, 194, 240, 0.14), transparent 70%);
}

.cta-card h2 {
  position: relative;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
}

.cta-card p {
  position: relative;
  max-width: 36rem;
  margin: 0.75rem auto 0;
  color: var(--mist-400);
}

.cta-card .btn {
  position: relative;
  margin-top: 1.75rem;
}

/* ---- Technology / token-flow diagram ------------------------------------ */
.diagram-card {
  margin-top: 3.5rem;
  padding: 1.5rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(10, 14, 28, 0.7);
  overflow: hidden;
}

.diagram-card svg {
  display: block;
  width: 100%;
  max-width: 48rem;
  margin-inline: auto;
}

.diagram-card figcaption {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--mist-500);
}

.flow-line {
  stroke-dasharray: 6 10;
  animation: dash-flow 1.6s linear infinite;
}

@keyframes dash-flow {
  to { stroke-dashoffset: -48; }
}

.token-dot {
  animation: token-out 2.2s linear infinite;
}

.token-dot.d2 { animation-delay: 0.7s; }
.token-dot.d3 { animation-delay: 1.4s; }

@keyframes token-out {
  0%   { transform: translateX(0); opacity: 0; }
  10%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateX(150px); opacity: 0; }
}

.core-glow {
  animation: core-glow 3s ease-in-out infinite;
}

@keyframes core-glow {
  0%, 100% { opacity: 0.55; }
  50%      { opacity: 1; }
}

.edge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.edge {
  padding: 1.75rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(10, 14, 28, 0.7);
  transition: border-color 0.25s;
}

.edge:hover {
  border-color: rgba(63, 217, 255, 0.4);
}

.edge h3 {
  font-size: 1.1rem;
  font-weight: 650;
}

.edge p {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--mist-400);
}

.why-row {
  display: grid;
  gap: 2.5rem;
  margin-top: 3.5rem;
}

@media (min-width: 62rem) {
  .why-row {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

.why-row h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 700;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.why-grid > div {
  padding-left: 1.25rem;
  border-left: 1px solid rgba(22, 194, 240, 0.3);
}

.why-grid h4 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 650;
  color: var(--mist-100);
}

.why-grid p {
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  color: var(--mist-400);
}

.partners-card {
  padding: 1.75rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(10, 14, 28, 0.7);
  max-width: 20rem;
}

.partners-card .label {
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.partners-card ul {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.partners-card li {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 650;
  color: var(--mist-100);
  line-height: 1.9;
}

.partners-card .note {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--mist-500);
}

/* ---- Team ---------------------------------------------------------------- */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.pillar {
  padding: 1.75rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(10, 14, 28, 0.7);
}

.pillar h3 {
  font-size: 1.1rem;
  font-weight: 650;
}

.pillar p {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--mist-400);
}

/* ---- Contact -------------------------------------------------------------- */
.contact {
  overflow: hidden;
}

.contact-glow {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: min(900px, 150vw);
  height: 420px;
  translate: -50% 0;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(22, 194, 240, 0.1), transparent 70%);
  pointer-events: none;
}

.contact-inner {
  position: relative;
}

.contact-btn {
  margin-top: 2rem;
}

.offices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.offices h3 {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.offices address {
  margin-top: 0.75rem;
  font-style: normal;
  font-size: 0.9375rem;
  color: var(--mist-300);
}

/* ---- Footer ---------------------------------------------------------------- */
footer {
  position: relative;
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner .brand-word {
  font-size: 1.1rem;
}

.footer-inner small {
  font-size: 0.875rem;
  color: var(--mist-500);
}

/* ==========================================================================
   Scroll-driven reveals — pure CSS (Chrome/Edge; harmless elsewhere).
   Elements are ONLY hidden inside @supports, so browsers without
   scroll-driven animations render everything immediately.
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .reveal {
      animation: reveal-in 1ms linear both;
      animation-timeline: view();
      animation-range: entry 5% entry 45%;
    }

    @keyframes reveal-in {
      from { opacity: 0; translate: 0 28px; }
      to   { opacity: 1; translate: 0 0; }
    }

    /* Energy beam fills bottom-to-top as the stack scrolls into view */
    .beam-fill {
      transform-origin: bottom;
      animation: beam-grow 1ms linear both;
      animation-timeline: view();
      animation-range: entry 10% cover 45%;
    }

    @keyframes beam-grow {
      from { transform: scaleY(0); }
      to   { transform: scaleY(1); }
    }
  }
}

/* ---- Reduced motion: disable everything --------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-glow,
  .beam-particle,
  .flow-line,
  .token-dot,
  .core-glow {
    animation: none !important;
  }

  .token-dot {
    opacity: 0.9;
  }
}