/* ── TOKENS ─────────────────────────────────────────────── */
:root {
  --clr-bg:         rgba(232, 232, 237, 0.72);
  --clr-surface:    #ffffff;
  --clr-surface-2:  #f4f5f7;
  --clr-border:     #d0d4db;
  --clr-accent:     #2563eb;
  --clr-accent-dim: #1d4ed8;
  --clr-text:       #1a1d23;
  --clr-muted:      #5a6270;
  --clr-white:      #ffffff;

  --font-display: -apple-system, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body:    -apple-system, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --radius: 4px;
  --transition: 0.25s ease;

  --max-w: 1160px;
  --section-pad: clamp(4rem, 8vw, 7rem);
}

/* ── BASE ────────────────────────────────────────────────── */
body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.7;
  background-image: none;
}

.container {
  width: min(var(--max-w), 100% - 2.5rem);
  margin-inline: auto;
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .9rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition);
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--clr-accent);
  color: #ffffff;
}
.btn--primary:hover { background: #1d4ed8; }

.btn--outline {
  background: transparent;
  color: var(--clr-accent);
  border: 1.5px solid var(--clr-accent);
}
.btn--outline:hover {
  background: var(--clr-accent);
  color: #ffffff;
}

.btn--ghost {
  background: transparent;
  color: var(--clr-text);
  border: 1.5px solid var(--clr-border);
}
.btn--ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.btn--full { width: 100%; justify-content: center; }

/* ── NAV ─────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: #ffffff;
  backdrop-filter: none;
  border-bottom: 1px solid var(--clr-border);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav__logo {
  position: absolute;
  left: 1rem;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.nav__links {
  margin-left: auto;
}
.nav__logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  mix-blend-mode: normal;
  filter: none;
}
.nav__logo-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--clr-text);
  line-height: 1;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav__links a {
  font-size: .875rem;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--clr-text); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  transition: transform var(--transition), opacity var(--transition);
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
  background:
    radial-gradient(ellipse 60% 50% at 70% 40%, rgba(37,99,235,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 20% 70%, rgba(37,99,235,0.05) 0%, transparent 65%),
    radial-gradient(ellipse 80% 40% at 50% 100%, rgba(37,99,235,0.03) 0%, transparent 60%),
    linear-gradient(160deg, #ffffff 0%, #f0f2f7 50%, #e8e8ed 100%);
}

/* Floating orbs */
.hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.07) 0%, transparent 70%);
  top: -10%;
  right: -5%;
  animation: orbFloat 12s ease-in-out infinite;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.05) 0%, transparent 70%);
  bottom: 5%;
  left: -8%;
  animation: orbFloat 16s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0px) scale(1); }
  33%       { transform: translateY(-30px) scale(1.05); }
  66%       { transform: translateY(15px) scale(0.97); }
}

/* Grid lines */
.hero__bg-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--clr-border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--clr-border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: .2;
  mask-image: radial-gradient(ellipse 80% 70% at 60% 50%, black 30%, transparent 80%);
  z-index: 0;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding-block: var(--section-pad);
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: fadeUp .6s ease .2s forwards;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  opacity: 0;
  animation: fadeUp .6s ease .35s forwards;
}

.hero__slogan {
  margin-top: 1.25rem;
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-style: italic;
  font-weight: 300;
  color: var(--clr-muted);
  opacity: 0;
  animation: fadeUp .6s ease .5s forwards;
}

.hero__cta-group {
  margin-top: 2.25rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp .6s ease .65s forwards;
}

/* Pipeline graphic */
.hero__graphic {
  position: relative;
  height: 340px;
  opacity: 0;
  animation: fadeIn .8s ease .7s forwards;
}

.hero__pipe {
  position: absolute;
  background: var(--clr-surface-2);
  border: 1.5px solid var(--clr-border);
  border-radius: 2px;
}
.hero__pipe--h {
  width: 70%;
  height: 28px;
  top: 50%;
  left: 15%;
  transform: translateY(-50%);
}
.hero__pipe--v {
  width: 28px;
  height: 55%;
  top: 10%;
  left: 55%;
}
.hero__pipe--accent {
  width: 40%;
  height: 14px;
  bottom: 22%;
  right: 8%;
  background: linear-gradient(90deg, var(--clr-accent-dim), var(--clr-accent));
  border-color: var(--clr-accent);
  box-shadow: 0 0 20px rgba(37,99,235,.2);
}
.hero__node {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--clr-accent);
  box-shadow: 0 0 24px rgba(37,99,235,.4);
  top: calc(50% - 10px);
  left: calc(55% - 10px + 14px);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 24px rgba(37,99,235,.4); }
  50%       { box-shadow: 0 0 44px rgba(37,99,235,.7); }
}

.hero__scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-muted);
  opacity: 0;
  animation: fadeIn .6s ease 1.2s forwards;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-muted), transparent);
  animation: scrollLine 1.5s ease infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── ABOUT ────────────────────────────────────────────────── */
.about {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--clr-border);
  background: #ffffff;
}
.about__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: start;
}
.about__badge {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  padding-right: 2rem;
  border-right: 1px solid var(--clr-border);
}
.about__heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--clr-text);
  margin-bottom: 1.25rem;
}
.about__text {
  max-width: 60ch;
  color: var(--clr-muted);
  font-size: 1.05rem;
}

/* ── SECTION HEADER ──────────────────────────────────────── */
.section-header {
  margin-bottom: 3rem;
}
.section-header--light .section-title,
.section-header--light .section-label {
  color: #ffffff;
}
.section-label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: .6rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--clr-text);
}

/* ── SERVICES ─────────────────────────────────────────────── */
.services {
  padding-block: var(--section-pad);
  background: var(--clr-surface-2);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}
.services .section-title,
.services .section-label { color: var(--clr-text); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5px;
  background: var(--clr-border);
  border: 1.5px solid var(--clr-border);
}
.service-card {
  background: #ffffff;
  padding: 2.25rem;
  transition: background var(--transition);
}
.service-card:hover { background: #f0f4ff; }
.service-card__icon {
  width: 40px;
  height: 40px;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--clr-text);
  margin-bottom: .75rem;
}
.service-card p {
  color: var(--clr-muted);
  font-size: .925rem;
  line-height: 1.65;
}

/* ── STATS ────────────────────────────────────────────────── */
.stats {
  padding-block: 3rem;
  border-bottom: 1px solid var(--clr-border);
  background: #ffffff;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--clr-border);
  border: 1px solid var(--clr-border);
}
.stat {
  background: #ffffff;
  padding: 2rem 1.5rem;
  text-align: center;
}
.stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--clr-accent);
  line-height: 1;
}
.stat__label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-top: .4rem;
}

/* ── CONTACT / CTA (dark section) ────────────────────────── */
.contact {
  padding-block: var(--section-pad);
  background: #1a1d23;
}
.contact .section-title { color: #ffffff; }
.contact .section-label { color: #93b4f8; }
.contact__form {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}
.form-group label {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #a0aab8;
}
.form-group input,
.form-group textarea {
  background: #252a33;
  border: 1.5px solid #363d4a;
  border-radius: var(--radius);
  color: #ffffff;
  padding: .8rem 1rem;
  font-size: .95rem;
  transition: border-color var(--transition);
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #4a5568; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--clr-accent);
}

/* ── FOOTER ───────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--clr-border);
  padding-block: 2.5rem;
  background: #ffffff;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: .75rem;
}
.footer__logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  mix-blend-mode: normal;
  filter: none;
}
.footer__slogan {
  font-style: italic;
  font-size: .875rem;
  color: var(--clr-muted);
}
.footer__copy {
  font-size: .8rem;
  color: var(--clr-muted);
}

/* ── ANIMATIONS ────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Scroll-triggered reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 820px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__graphic { display: none; }

  .about__inner {
    grid-template-columns: 1fr;
  }
  .about__badge {
    writing-mode: horizontal-tb;
    transform: none;
    border-right: none;
    border-bottom: 1px solid var(--clr-border);
    padding-right: 0;
    padding-bottom: .75rem;
  }

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

  .form-row { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; align-items: flex-start; }

  .nav__links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 68px;
    inset-inline: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--clr-border);
    padding: 1.5rem;
    gap: 1rem;
    align-items: flex-start;
  }
  .nav__links.open { display: flex; }
  .nav__burger {
    display: flex;
    position: absolute;
    left: 1rem;
    right: auto;
    top: 50%;
    transform: translateY(-50%);
  }
  .nav__logo {
    right: 1rem;
    left: auto;
  }
}

@media (max-width: 480px) {
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .services__grid { grid-template-columns: 1fr; }
}