/* ==========================================================================
   Voirtek, Inc. — voirtek.com
   Zero-dependency stylesheet. No frameworks, no webfonts, no build step.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  --ink-900: #05080f;
  --ink-800: #080d18;
  --ink-700: #0c1322;
  --ink-600: #111a2d;
  --ink-500: #17223a;

  --line: rgba(148, 163, 184, 0.16);
  --line-strong: rgba(148, 163, 184, 0.3);

  --text: #e9eef8;
  --text-dim: #9fb0c9;
  --text-faint: #6b7c96;

  --blue: #3b82f6;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --brand-gradient: linear-gradient(120deg, var(--blue), var(--cyan) 55%, var(--violet));

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;

  --shell: 1180px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4.5rem, 9vw, 8rem);

  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset,
                 0 24px 48px -32px rgba(0, 0, 0, 0.9);

  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  /* Offset anchor targets so the fixed header never covers a heading. */
  scroll-padding-top: 6rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  line-height: 1.65;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

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

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 650;
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 1.4rem + 4.4vw, 4.35rem); }
h2 { font-size: clamp(1.85rem, 1.2rem + 2.6vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem); }

p { margin: 0 0 1rem; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

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

ul { margin: 0; padding: 0; list-style: none; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(34, 211, 238, 0.28);
  color: #fff;
}

/* --------------------------------------------------------------------------
   3. Layout primitives
   -------------------------------------------------------------------------- */
.shell {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

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

.section--alt {
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800) 40%, var(--ink-900));
  border-block: 1px solid var(--line);
}

.section__head {
  max-width: 46rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.75rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: var(--brand-gradient);
}

.lede {
  margin-top: 1.15rem;
  color: var(--text-dim);
  font-size: clamp(1.02rem, 0.98rem + 0.25vw, 1.18rem);
  max-width: 42rem;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 999;
  padding: 0.75rem 1.25rem;
  background: var(--cyan);
  color: var(--ink-900);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top 0.2s var(--ease);
}

.skip-link:focus { top: 1rem; }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
              border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--brand-gradient);
  color: #04070e;
  box-shadow: 0 14px 34px -16px rgba(34, 211, 238, 0.75);
}

.btn--primary:hover { box-shadow: 0 20px 42px -16px rgba(34, 211, 238, 0.9); }

.btn--ghost {
  background: rgba(148, 163, 184, 0.06);
  border-color: var(--line-strong);
  color: var(--text);
}

.btn--ghost:hover {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.45);
}

.btn--sm { padding: 0.6rem 1.15rem; font-size: 0.875rem; }

.btn--block { width: 100%; }

.btn[disabled] {
  opacity: 0.55;
  cursor: progress;
  transform: none;
}

/* --------------------------------------------------------------------------
   5. Header / navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease),
              backdrop-filter 0.25s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-stuck {
  background: rgba(5, 8, 15, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0.14em;
}

.brand__mark { width: 34px; height: 34px; flex: none; }

.nav { display: flex; align-items: center; gap: 2rem; }

.nav__list { display: flex; align-items: center; gap: 1.9rem; }

.nav__link {
  position: relative;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.18s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease);
}

.nav__link:hover,
.nav__link.is-active { color: var(--text); }

.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  align-items: center;
  justify-content: center;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
}

.nav-toggle__bars::before { transform: translateY(-6px); }
.nav-toggle__bars::after { transform: translateY(6px); }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; position: relative; }

  .nav {
    position: fixed;
    inset: 4.75rem 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 1.25rem var(--gutter) 2rem;
    background: var(--ink-800);
    border-bottom: 1px solid var(--line);
    transform: translateY(-115%);
    visibility: hidden;
    transition: transform 0.3s var(--ease), visibility 0.3s var(--ease);
  }

  .nav.is-open { transform: translateY(0); visibility: visible; }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }

  .nav__link {
    display: block;
    padding: 0.95rem 0.25rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
  }

  .nav__link::after { display: none; }

  .nav .btn { margin-top: 1.25rem; }
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  min-height: min(100svh, 920px);
  padding-block: 9rem 5rem;
  overflow: hidden;
}

.hero__aurora {
  position: absolute;
  inset: -20% -10% auto;
  height: 130%;
  z-index: -2;
  background:
    radial-gradient(42rem 28rem at 18% 12%, rgba(59, 130, 246, 0.32), transparent 62%),
    radial-gradient(38rem 26rem at 82% 4%, rgba(34, 211, 238, 0.24), transparent 60%),
    radial-gradient(34rem 30rem at 62% 78%, rgba(167, 139, 250, 0.2), transparent 62%);
  filter: blur(8px);
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.075) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(75% 62% at 50% 34%, #000 22%, transparent 78%);
  -webkit-mask-image: radial-gradient(75% 62% at 50% 34%, #000 22%, transparent 78%);
}

.hero__inner { max-width: 60rem; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
  padding: 0.42rem 0.95rem 0.42rem 0.55rem;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-dim);
}

.hero__badge span {
  padding: 0.15rem 0.55rem;
  background: var(--brand-gradient);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #04070e;
}

.hero__title { margin-bottom: 1.5rem; }

.hero__copy {
  max-width: 40rem;
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.28rem);
  color: var(--text-dim);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.5rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1.75rem;
  margin-top: clamp(3.5rem, 7vw, 5.5rem);
  padding-top: 2.25rem;
  border-top: 1px solid var(--line);
}

.hero__stat dt {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.hero__stat dd {
  margin: 0.5rem 0 0;
  font-size: 1.02rem;
  font-weight: 550;
  color: var(--text);
}

/* --------------------------------------------------------------------------
   7. Cards & grids
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: 1.25rem; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 26rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 15.5rem), 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(1.6rem, 3vw, 2.15rem);
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--brand-gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.28s var(--ease);
  pointer-events: none;
}

.card:hover { transform: translateY(-5px); }
.card:hover::before { opacity: 0.85; }

.card__icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.4rem;
  background: rgba(34, 211, 238, 0.09);
  border: 1px solid rgba(34, 211, 238, 0.22);
  border-radius: 14px;
  color: var(--cyan);
}

.card__icon svg { width: 22px; height: 22px; }

.card h3 { margin-bottom: 0.7rem; }

.card p { color: var(--text-dim); font-size: 0.965rem; }

.card__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.card__list li {
  padding: 0.32rem 0.7rem;
  background: rgba(148, 163, 184, 0.07);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.79rem;
  color: var(--text-dim);
}

/* Industries */
.industry {
  padding: clamp(1.5rem, 3vw, 1.9rem);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease),
              transform 0.25s var(--ease);
}

.industry:hover {
  background: var(--ink-700);
  border-color: var(--line-strong);
  transform: translateY(-4px);
}

.industry__num {
  display: block;
  margin-bottom: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.industry h3 { margin-bottom: 0.6rem; font-size: 1.1rem; }

.industry p { font-size: 0.92rem; color: var(--text-dim); }

/* Approach steps */
.steps {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  counter-reset: step;
}

.step {
  position: relative;
  padding: 1.75rem 1.5rem 1.5rem;
  background: linear-gradient(180deg, rgba(23, 34, 58, 0.6), transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.step h3 { margin-bottom: 0.5rem; font-size: 1.05rem; }
.step p { font-size: 0.9rem; color: var(--text-dim); }

/* --------------------------------------------------------------------------
   8. FAQ
   -------------------------------------------------------------------------- */
.faq {
  display: grid;
  gap: 0.75rem;
  max-width: 54rem;
}

.faq__item {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.faq__item[open] {
  background: var(--ink-700);
  border-color: var(--line-strong);
}

.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.15rem 1.4rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  list-style: none;
}

.faq__q::-webkit-details-marker { display: none; }

.faq__q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-right: 0.3rem;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.22s var(--ease);
}

.faq__item[open] .faq__q::after { transform: rotate(225deg) translate(-2px, -2px); }

.faq__a {
  padding: 0 1.4rem 1.35rem;
  color: var(--text-dim);
  font-size: 0.95rem;
  max-width: 46rem;
}

/* --------------------------------------------------------------------------
   9. Contact
   -------------------------------------------------------------------------- */
.contact {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
}

@media (max-width: 900px) {
  .contact { grid-template-columns: 1fr; }
}

.contact__points { margin-top: 2.25rem; display: grid; gap: 1.1rem; }

.contact__point {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.contact__point svg {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 0.18rem;
  color: var(--cyan);
}

.form {
  padding: clamp(1.6rem, 3.5vw, 2.5rem);
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.form__row {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  margin-bottom: 1.1rem;
}

.field { display: flex; flex-direction: column; gap: 0.45rem; margin-bottom: 1.1rem; }
.form__row .field { margin-bottom: 0; }

.field > label {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

.field > label .req { color: var(--cyan); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.95rem;
  background: rgba(5, 8, 15, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.field textarea { min-height: 8.5rem; resize: vertical; }

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%239fb0c9' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 12px;
  padding-right: 2.5rem;
}

.field select option { background: var(--ink-700); color: var(--text); }

.field input::placeholder,
.field textarea::placeholder { color: var(--text-faint); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(34, 211, 238, 0.6);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.14);
}

.field__error {
  min-height: 1rem;
  font-size: 0.78rem;
  color: #fca5a5;
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea { border-color: rgba(248, 113, 113, 0.7); }

/* Honeypot — hidden from humans, visible to naive bots. */
.hp {
  position: absolute !important;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  pointer-events: none;
}

.form__footnote {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-faint);
  text-align: center;
}

.form__status {
  margin-top: 1.1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  border: 1px solid transparent;
}

.form__status:empty { display: none; }

.form__status.is-success {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.35);
  color: #86efac;
}

.form__status.is-error {
  background: rgba(248, 113, 113, 0.1);
  border-color: rgba(248, 113, 113, 0.35);
  color: #fca5a5;
}

/* --------------------------------------------------------------------------
   10. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding-block: 3rem 2.25rem;
  border-top: 1px solid var(--line);
  background: var(--ink-900);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-footer__links { display: flex; flex-wrap: wrap; gap: 1.5rem; }

.site-footer__links a {
  font-size: 0.88rem;
  color: var(--text-dim);
  transition: color 0.18s var(--ease);
}

.site-footer__links a:hover { color: var(--text); }

.site-footer__legal {
  width: 100%;
  padding-top: 1.75rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--text-faint);
}

/* --------------------------------------------------------------------------
   11. Scroll reveal
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible { opacity: 1; transform: none; }

/* No JS? Never hide content. */
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal { opacity: 1; transform: none; }
}