/* ------------------------------------------------------------------
   EXOLVA — site styles
   Palette: deep navy ink + copper accent (a nod to PCB traces).
   Type:    Space Grotesk (headings), Inter (body). Self-hosted.
------------------------------------------------------------------- */

@font-face {
  font-family: "Inter Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("/fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
}
@font-face {
  font-family: "Space Grotesk Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 300 700;
  src: url("/fonts/space-grotesk-latin-wght-normal.woff2") format("woff2-variations");
}

:root {
  --ink: #0b1626;
  --ink-2: #122038;
  --ink-3: #1c2d4a;
  --paper: #f7f7f5;
  --white: #ffffff;
  --text: #1b2433;
  --muted: #5b6675;
  --line: #e2e5ea;
  --copper: #d4762e;
  --copper-dark: #b45f1f;
  --copper-soft: #fbeadb;
  --on-ink: #f7f7f5;
  --on-ink-muted: #a7b1c2;

  --font-body: "Inter Variable", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk Variable", "Inter Variable", system-ui, sans-serif;

  --radius: 14px;
  --radius-sm: 8px;
  --container: 1120px;
  --gutter: clamp(16px, 4vw, 32px);
  --shadow: 0 1px 2px rgba(11, 22, 38, 0.06), 0 12px 32px -16px rgba(11, 22, 38, 0.18);
}

/* Reset-ish */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
main {
  flex: 1 0 auto;
}
img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
}
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}
h1 {
  font-size: clamp(2.3rem, 5.2vw, 3.9rem);
}
h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
}
h3 {
  font-size: 1.25rem;
}
p {
  margin: 0;
}
.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
:focus-visible {
  outline: 3px solid var(--copper);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
  font-family: inherit;
  line-height: 1.2;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--copper);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--copper-dark);
}
.btn-ghost {
  color: var(--on-ink);
  border-color: rgba(247, 247, 245, 0.35);
}
.btn-ghost:hover {
  border-color: rgba(247, 247, 245, 0.8);
}
.btn[disabled] {
  opacity: 0.6;
  cursor: progress;
  transform: none;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 22, 38, 0.86);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--on-ink);
}
.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.14em;
}
.site-header.on-paper {
  background: rgba(247, 247, 245, 0.9);
  border-bottom-color: var(--line);
}
.site-header.on-paper .brand {
  color: var(--ink);
}
.site-header.on-paper .nav a {
  color: var(--ink);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}
.nav a {
  color: var(--on-ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.86;
}
.nav a:hover {
  opacity: 1;
}
.nav .btn {
  padding: 0.6rem 1.1rem;
  opacity: 1;
}
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--on-ink);
  padding: 8px;
  cursor: pointer;
}
.nav-toggle svg {
  width: 26px;
  height: 26px;
}
@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.5rem var(--gutter) 1.2rem;
  }
  .nav.is-open {
    display: flex;
  }
  .nav a {
    padding: 0.9rem 0;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  }
  .nav .btn {
    margin-top: 1rem;
    justify-content: center;
    border-bottom: 0;
  }
}

/* Hero */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--on-ink);
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 70% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 40%, #000 30%, transparent 75%);
  z-index: -1;
}
.hero::after {
  content: "";
  position: absolute;
  width: 640px;
  height: 640px;
  right: -200px;
  top: -220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 118, 46, 0.28), transparent 65%);
  z-index: -1;
}
.hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: clamp(4rem, 9vw, 7.5rem) 0;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 1.4rem;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--copper);
}
.hero h1 {
  color: var(--on-ink);
}
.hero h1 em {
  font-style: normal;
  color: var(--copper);
}
.hero .lead {
  margin-top: 1.4rem;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--on-ink-muted);
  max-width: 34rem;
}
.hero .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.2rem;
}

/* Hero stack graphic */
.stack {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  position: relative;
  width: 100%;
  max-width: 420px;
  justify-self: center;
}
.stack::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 28px;
  bottom: 28px;
  width: 2px;
  background: linear-gradient(var(--copper), rgba(212, 118, 46, 0.25));
}
.stack li {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1rem 0.9rem 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}
.stack li::before {
  content: "";
  justify-self: center;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--copper);
}
.stack li:nth-child(odd) {
  transform: translateX(14px);
}
.stack strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.02em;
}
.stack span {
  display: block;
  grid-column: 2;
  font-size: 0.86rem;
  color: var(--on-ink-muted);
}

/* Sections */
.section {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  scroll-margin-top: 68px;
}
.section-alt {
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head {
  max-width: 44rem;
  margin-bottom: clamp(2rem, 4vw, 3.2rem);
}
.section-head .eyebrow {
  margin-bottom: 0.9rem;
}
.section-head p {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.08rem;
}

/* Service cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.2rem;
}
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.7rem 1.6rem 1.8rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 118, 46, 0.5);
}
.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--copper-soft);
  color: var(--copper-dark);
  display: grid;
  place-items: center;
  margin-bottom: 0.4rem;
}
.card-icon svg {
  width: 24px;
  height: 24px;
}
.card p {
  color: var(--muted);
  font-size: 0.98rem;
}
.card ul {
  margin: 0.2rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.card li {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-3);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
}

/* Process */
.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding-top: 3.4rem;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1;
  color: var(--copper);
}
.steps li::after {
  content: "";
  position: absolute;
  top: 2.6rem;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--line);
}
.steps p {
  margin-top: 0.6rem;
  color: var(--muted);
}

/* About */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.about .section-head {
  margin-bottom: 0;
}
.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}
.principles li {
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: 1rem;
  padding: 1.2rem 1.3rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.principles li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 0.5rem;
  border-radius: 50%;
  background: var(--copper);
}
.principles strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
}
.principles p {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.96rem;
}

/* Contact */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 3vw, 2.2rem);
  box-shadow: var(--shadow);
  display: grid;
  gap: 1.1rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}
.field {
  display: grid;
  gap: 0.4rem;
}
.field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
}
.field label small {
  font-weight: 400;
  color: var(--muted);
}
.field input,
.field textarea {
  font: inherit;
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--text);
  width: 100%;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--copper);
  background: var(--white);
}
.field textarea {
  min-height: 150px;
  resize: vertical;
}
.consent {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--muted);
}
.consent input {
  margin-top: 0.3rem;
  width: 18px;
  height: 18px;
  accent-color: var(--copper);
  flex: none;
}
.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}
.form-status {
  font-size: 0.95rem;
  min-height: 1.4em;
}
.form-status.is-error {
  color: #b42318;
}
.form-status.is-success {
  color: #157f3b;
}
.contact-aside h3 {
  margin-bottom: 0.5rem;
}
.contact-aside p {
  color: var(--muted);
}
.contact-aside .block {
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}
.contact-aside .block:first-child {
  border-top: 0;
  padding-top: 0;
}
.contact-aside a {
  color: var(--copper-dark);
  font-weight: 600;
  text-decoration: none;
}
.contact-aside a:hover {
  text-decoration: underline;
}
.contact-aside address {
  font-style: normal;
  color: var(--muted);
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: var(--on-ink-muted);
  padding: 2.6rem 0;
  font-size: 0.9rem;
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2rem;
  align-items: center;
  justify-content: space-between;
}
.site-footer .brand {
  color: var(--on-ink);
}
.site-footer nav {
  display: flex;
  gap: 1.4rem;
}
.site-footer a {
  color: var(--on-ink-muted);
  text-decoration: none;
}
.site-footer a:hover {
  color: var(--on-ink);
}

/* Simple pages (privacy, thanks, 404) */
.page {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}
.page .prose {
  max-width: 44rem;
}
.prose h1 {
  margin-bottom: 1.2rem;
}
.prose h2 {
  font-size: 1.35rem;
  margin: 2.2rem 0 0.6rem;
}
.prose p,
.prose li {
  color: var(--text);
}
.prose p + p {
  margin-top: 0.9rem;
}
.prose ul {
  padding-left: 1.2rem;
  margin: 0.6rem 0 0;
}
.prose a {
  color: var(--copper-dark);
}
.prose .meta {
  color: var(--muted);
  font-size: 0.95rem;
}
.center {
  text-align: center;
  max-width: 36rem;
  margin-inline: auto;
}
.center h1 {
  margin-bottom: 1rem;
}
.center p {
  color: var(--muted);
  font-size: 1.1rem;
}
.center .btn {
  margin-top: 2rem;
}

/* Responsive */
@media (max-width: 900px) {
  .hero .container,
  .about,
  .contact {
    grid-template-columns: 1fr;
  }
  .stack {
    max-width: 480px;
    margin-top: 0.5rem;
  }
}
@media (max-width: 560px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .stack li:nth-child(odd) {
    transform: none;
  }
}