/* ═══════════════════════════════════════════════════════════════════
   SCA Technology SAS — Revamped Design System
   Palette: Deep Navy #03070e | White #ffffff | Cyan Accent #37e8ff
   Typography: IBM Plex Sans
   Aesthetic: Futuristic · Minimalist · Clean · Slightly Elegant
═══════════════════════════════════════════════════════════════════ */

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

:root {
  --navy:        #03070e;
  --navy-mid:    #071524;
  --navy-light:  #0d2035;
  --navy-border: rgba(55, 232, 255, 0.12);
  --cyan:        #37e8ff;
  --cyan-dim:    rgba(55, 232, 255, 0.55);
  --cyan-glow:   rgba(55, 232, 255, 0.15);
  --white:       #ffffff;
  --white-70:    rgba(255, 255, 255, 0.70);
  --white-40:    rgba(255, 255, 255, 0.40);
  --white-15:    rgba(255, 255, 255, 0.08);
  --font:        'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius:      10px;
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-w:       1200px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  background-color: var(--navy);
  color: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }

/* ── Typography Scale ─────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ── Utility: Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--cyan);
  color: var(--navy);
  box-shadow: 0 0 20px var(--cyan-glow);
}

.btn--primary:hover {
  background: #ffffff;
  box-shadow: 0 0 32px rgba(55, 232, 255, 0.35);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 16px var(--cyan-glow);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════════════════════════════════
   NAVIGATION
══════════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
  border-bottom: 1px solid transparent;
}

.nav--scrolled {
  background: rgba(3, 7, 14, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--navy-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 2.5rem;
}

.nav__brand img {
  height: 48px;
  width: auto;
  opacity: 0.92;
  transition: opacity var(--transition);
  /* Force white rendering for the SVG */
  filter: brightness(0) invert(1);
}

.nav__brand:hover img { opacity: 1; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav__link {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white-70);
  transition: color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width var(--transition);
}

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

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__link--cta {
  color: var(--cyan);
  border: 1px solid var(--navy-border);
  padding: 0.45rem 1.1rem;
  border-radius: 3px;
  letter-spacing: 0.06em;
}

.nav__link--cta::after { display: none; }

.nav__link--cta:hover {
  background: var(--cyan-glow);
  border-color: var(--cyan-dim);
  color: var(--cyan);
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--white);
  transition: var(--transition);
  transform-origin: center;
}

.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 1rem 2.5rem 1.5rem;
  background: rgba(3, 7, 14, 0.96);
  backdrop-filter: blur(18px);
  border-top: 1px solid var(--navy-border);
  gap: 0;
}

.nav__mobile.is-open { display: flex; }

.nav__mobile-link {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--white-70);
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color var(--transition);
}

.nav__mobile-link:last-child { border-bottom: none; }
.nav__mobile-link:hover { color: var(--cyan); }

/* ══════════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Background image */
.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/ChatGPT-Image-Nov-19-2025-06_13_17-PM.png');
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  transform: scale(1.04);
  transition: transform 8s ease-out;
}

.hero:hover .hero__bg {
  transform: scale(1.0);
}

/* Multi-layer overlay: vignette + subtle gradient */
.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 70% at 50% 50%, rgba(3,7,14,0.18) 0%, rgba(3,7,14,0.65) 100%),
    linear-gradient(to bottom, rgba(3,7,14,0.50) 0%, rgba(3,7,14,0.08) 35%, rgba(3,7,14,0.08) 55%, rgba(3,7,14,0.75) 100%);
  z-index: 1;
}

.hero__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  padding: 0 2.5rem;
  animation: heroFadeUp 1.1s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.5rem;
  padding: 0.35rem 1rem;
  border: 1px solid var(--navy-border);
  border-radius: 2px;
  background: rgba(55, 232, 255, 0.06);
  animation: heroFadeUp 1.1s 0.15s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.hero__headline {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 1.5rem;
  animation: heroFadeUp 1.1s 0.25s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.hero__headline--accent {
  color: var(--cyan);
  position: relative;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.175rem);
  font-weight: 300;
  line-height: 1.7;
  color: var(--white-70);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  animation: heroFadeUp 1.1s 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  animation: heroFadeUp 1.1s 0.45s cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* Scroll indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  animation: heroFadeUp 1.1s 0.7s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.hero__scroll-label {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white-40);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--white-40), transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.15); }
}

/* ══════════════════════════════════════════════════════════════════
   TRUST BAR
══════════════════════════════════════════════════════════════════ */
.trust-bar {
  background: var(--navy-mid);
  border-top: 1px solid var(--navy-border);
  border-bottom: 1px solid var(--navy-border);
  padding: 1.1rem 2.5rem;
  overflow: hidden;
}

.trust-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

.trust-bar__item {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--white-40);
  white-space: nowrap;
}

.trust-bar__dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--cyan-dim);
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════════
   SECTIONS
══════════════════════════════════════════════════════════════════ */
.section {
  padding: 7rem 2.5rem;
}

.section--dark {
  background: var(--navy);
}

.section--mid {
  background: var(--navy-mid);
  border-top: 1px solid var(--navy-border);
  border-bottom: 1px solid var(--navy-border);
}

.section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section__header {
  text-align: center;
  margin-bottom: 4rem;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1rem;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--white);
  margin-bottom: 1rem;
}

.section__lead {
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--white-70);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ══════════════════════════════════════════════════════════════════
   CARDS
══════════════════════════════════════════════════════════════════ */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--white-15);
  border: 1px solid var(--navy-border);
  border-top: 2px solid var(--cyan);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(55,232,255,0.06) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(55,232,255,0.2);
  border-top-color: var(--cyan);
}

.card:hover::before { opacity: 1; }

/* Number variant (What We Build) */
.card__number {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cyan-dim);
  margin-bottom: 1.25rem;
}

/* Icon variant (Why SCA) */
.card__icon {
  color: var(--cyan);
  margin-bottom: 1.25rem;
  opacity: 0.85;
}

.card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 0.875rem;
  line-height: 1.35;
}

.card__body {
  font-size: 0.9375rem;
  font-weight: 300;
  color: var(--white-70);
  line-height: 1.7;
}

/* ── Reveal animation ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.cards .reveal:nth-child(1) { transition-delay: 0s; }
.cards .reveal:nth-child(2) { transition-delay: 0.1s; }
.cards .reveal:nth-child(3) { transition-delay: 0.2s; }

/* ══════════════════════════════════════════════════════════════════
   CTA STRIP
══════════════════════════════════════════════════════════════════ */
.cta-strip {
  background: var(--navy-light);
  border-top: 1px solid var(--navy-border);
  border-bottom: 1px solid var(--navy-border);
  padding: 3.5rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.cta-strip::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 100% at 50% 50%, rgba(55,232,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.cta-strip__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
  flex-wrap: wrap;
}

.cta-strip__text {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--white);
}

/* ══════════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════════ */
.footer {
  background: var(--navy);
  border-top: 1px solid var(--navy-border);
  padding-top: 4rem;
}

.footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2.5rem 3rem;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  max-width: 280px;
  align-items: flex-start;
  padding-left: 0;
}

.footer__logo {
  height: 32px;
  width: auto;
  opacity: 0.7;
  filter: brightness(0) invert(1);
  margin-left: 0;
}

.footer__tagline {
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--white-40);
  line-height: 1.5;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  align-items: flex-start;
  padding-top: 0.25rem;
}

.footer__link {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--white-40);
  transition: color var(--transition);
}

.footer__link:hover { color: var(--white); }

.footer__legal {
  padding: 1.75rem 2.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer__legal-text {
  font-size: 0.75rem;
  font-weight: 300;
  color: rgba(255,255,255,0.22);
  line-height: 1.8;
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .cards {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }

  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .nav__inner { padding: 1.25rem 1.5rem; }

  .cta-strip__inner {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .trust-bar__dot { display: none; }
  .trust-bar__inner { flex-direction: column; gap: 0.5rem; text-align: center; }
  .trust-bar__item { white-space: normal; }
}

@media (max-width: 600px) {
  .section { padding: 5rem 1.5rem; }
  .hero__inner { padding: 0 1.5rem; }
  .hero__actions { flex-direction: column; align-items: center; }
  .footer__inner { flex-direction: column; padding: 0 1.5rem 2.5rem; }
  .footer__legal { padding: 1.5rem 1.5rem; }
  .nav__inner { padding: 1.1rem 1.5rem; }
  .nav__mobile { padding: 0.75rem 1.5rem 1.25rem; }
  .trust-bar { padding: 1rem 1.5rem; }
  .cta-strip { padding: 3rem 1.5rem; }
}

/* ══════════════════════════════════════════════════════════════════
   CONTACT PAGE OVERRIDES
══════════════════════════════════════════════════════════════════ */
.contact-page {
  min-height: 100svh;
  padding-top: 7rem;
  background: var(--navy);
}

.contact-page__inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 2.5rem 6rem;
}

.contact-page__eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1rem;
  display: block;
}

.contact-page__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.1;
}

.contact-page__lead {
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--white-70);
  line-height: 1.7;
  margin-bottom: 3rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form__field {
  background: var(--white-15);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  padding: 0.875rem 1.125rem;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--white);
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
  outline: none;
  -webkit-appearance: none;
}

.contact-form__field::placeholder {
  color: var(--white-40);
  font-weight: 300;
}

.contact-form__field:focus {
  border-color: var(--cyan-dim);
  box-shadow: 0 0 0 3px rgba(55, 232, 255, 0.08);
}

.contact-form__textarea {
  min-height: 140px;
}

.contact-form__submit {
  margin-top: 0.5rem;
  align-self: flex-start;
}

@media (max-width: 600px) {
  .contact-form__row { grid-template-columns: 1fr; }
  .contact-page__inner { padding: 0 1.5rem 5rem; }
}