/* ============================================================
   Nexus AI Studio — styles.css
   Palette drawn from brand logo: deep navy + electric blue
   ============================================================ */

:root {
  --navy-900: #131c33;
  --navy-800: #1a2542;
  --navy-700: #24325c;
  --blue-600: #2456e6;
  --blue-500: #3b6df0;
  --blue-400: #5b8cff;
  --blue-100: #dce7fb;
  --blue-50:  #eef3fd;
  --ink:      #1c2540;
  --ink-soft: #55618a;
  --bg:       #ffffff;
  --bg-tint:  #f6f9ff;
  --line:     #e3eaf7;

  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --radius: 18px;
  --shadow-sm: 0 2px 10px rgba(28, 37, 64, 0.06);
  --shadow-md: 0 14px 40px rgba(28, 37, 64, 0.10);
  --shadow-lg: 0 24px 70px rgba(28, 37, 64, 0.16);

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

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(1140px, 92%);
  margin-inline: auto;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; letter-spacing: -0.02em; }

.text-gradient {
  background: linear-gradient(92deg, var(--blue-600) 10%, var(--blue-400) 60%, #7fb0ff 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out),
              background 0.25s, color 0.25s, border-color 0.25s;
  white-space: nowrap;
}
.btn--sm { padding: 0.5rem 1.15rem; font-size: 0.85rem; }
.btn--lg { padding: 0.95rem 1.9rem; font-size: 1rem; }
.btn:not(.btn--sm):not(.btn--lg) { padding: 0.75rem 1.5rem; font-size: 0.95rem; }

.btn--primary {
  background: linear-gradient(120deg, var(--blue-600), var(--blue-500));
  color: #fff;
  box-shadow: 0 8px 24px rgba(36, 86, 230, 0.32);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(36, 86, 230, 0.42); }

.btn--ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
}
.btn--ghost:hover { border-color: var(--blue-400); color: var(--blue-600); transform: translateY(-2px); }

.btn--light {
  background: #fff;
  color: var(--blue-600);
  box-shadow: 0 10px 30px rgba(10, 16, 38, 0.25);
}
.btn--light:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(10, 16, 38, 0.35); }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line), var(--shadow-sm);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
}
.nav__logo { height: 46px; width: auto; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 1.9rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 500;
}
.nav__links > a:not(.btn) {
  position: relative;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav__links > a:not(.btn):hover { color: var(--blue-600); }
.nav__links > a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%; height: 2px;
  background: var(--blue-500);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}
.nav__links > a:not(.btn):hover::after { transform: scaleX(1); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  width: 24px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(91, 140, 255, 0.14), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(36, 86, 230, 0.10), transparent 60%),
    var(--bg);
}
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}
.hero__glow {
  position: absolute;
  top: 12%; right: -8%;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 140, 255, 0.22), transparent 65%);
  filter: blur(20px);
  animation: floatGlow 9s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes floatGlow {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-40px, 40px) scale(1.12); }
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-top: 7rem;
  padding-bottom: 4rem;
}
.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 1.4rem;
}
.hero__title {
  font-size: clamp(2.7rem, 6.5vw, 5rem);
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: 1.6rem;
}
.hero__sub {
  max-width: 40rem;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
  margin-bottom: 2.4rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 4rem; }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(2rem, 6vw, 5rem);
  padding-top: 2.2rem;
  border-top: 1px solid var(--line);
  max-width: 46rem;
}
.stat__num, .stat__plus {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--navy-900);
}
.stat__plus { color: var(--blue-500); }
.stat__label {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: 0.2rem;
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid rgba(85, 97, 138, 0.4);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  z-index: 2;
}
.hero__scroll-dot {
  width: 4px; height: 8px;
  border-radius: 4px;
  background: var(--blue-500);
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot {
  0%   { transform: translateY(0); opacity: 1; }
  70%  { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--bg-tint);
  padding-block: 1.1rem;
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: 2.6rem;
  width: max-content;
  animation: marquee 28s linear infinite;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy-700);
}
.marquee__track i { color: var(--blue-400); font-style: normal; font-size: 0.7rem; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(4.5rem, 9vw, 7.5rem); }
.section--tint { background: var(--bg-tint); }

.section__head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 0.9rem;
}
.section__title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--navy-900);
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2rem 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), border-color 0.35s;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-600), var(--blue-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease-out);
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-100);
}
.card:hover::before { transform: scaleX(1); }

.card--featured {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border-color: var(--navy-700);
  color: #dbe4ff;
}
.card--featured .card__title { color: #fff; }
.card--featured .card__text { color: #aab8e0; }
.card--featured .card__list li { color: #c3d0f2; }
.card--featured .card__list li::before { color: var(--blue-400); }
.card--featured .card__icon { background: rgba(91, 140, 255, 0.16); color: var(--blue-400); }

.card__icon {
  width: 58px; height: 58px;
  border-radius: 16px;
  background: var(--blue-50);
  color: var(--blue-600);
  display: grid;
  place-items: center;
  margin-bottom: 1.5rem;
}
.card__icon svg { width: 30px; height: 30px; }
.card__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: 0.7rem;
}
.card__text { font-size: 0.96rem; color: var(--ink-soft); margin-bottom: 1.3rem; }
.card__list { list-style: none; }
.card__list li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 0.45rem;
}
.card__list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  font-size: 0.55rem;
  top: 0.35em;
  color: var(--blue-500);
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.6rem;
}
.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.9rem 1.6rem;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.step__num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue-500);
  letter-spacing: 0.15em;
}
.step h3 {
  font-size: 1.15rem;
  margin: 0.7rem 0 0.5rem;
  color: var(--navy-900);
}
.step p { font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- Impact ---------- */
.impact {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.impact__quote {
  background: linear-gradient(150deg, var(--navy-800), var(--navy-900));
  color: #e6ecff;
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(2rem, 4vw, 3rem);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.impact__quote::before {
  content: "“";
  position: absolute;
  top: 0.4rem; left: 1.4rem;
  font-family: var(--font-display);
  font-size: 5rem;
  color: rgba(91, 140, 255, 0.35);
  line-height: 1;
}
.impact__quote p {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 500;
  line-height: 1.55;
  margin-bottom: 1.4rem;
}
.impact__quote footer { font-size: 0.9rem; color: #93a5d6; }

.impact__grid { display: grid; gap: 1.2rem; }
.impact__item {
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
.impact__item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }
.impact__metric {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--blue-600);
  min-width: 5.2rem;
}
.impact__item p { font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- CTA ---------- */
.cta {
  position: relative;
  background:
    radial-gradient(800px 400px at 80% 0%, rgba(91, 140, 255, 0.25), transparent 60%),
    linear-gradient(140deg, var(--navy-800), var(--navy-900));
  color: #fff;
  padding-block: clamp(4.5rem, 9vw, 7rem);
  overflow: hidden;
}
.cta::after {
  content: "";
  position: absolute;
  right: -120px; bottom: -160px;
  width: 420px; height: 420px;
  background:
    conic-gradient(from 0deg, transparent, rgba(91,140,255,0.18), transparent 30%);
  border-radius: 50%;
  animation: spinSlow 16s linear infinite;
}
@keyframes spinSlow { to { transform: rotate(360deg); } }
.cta__inner { text-align: center; position: relative; z-index: 1; }
.cta__title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  margin-bottom: 1rem;
}
.cta__sub {
  max-width: 34rem;
  margin: 0 auto 2.2rem;
  color: #aab8e0;
  font-size: 1.05rem;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--navy-900);
  color: #93a5d6;
  padding-block: 3rem 2.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.8rem;
}
.footer__brand { display: flex; align-items: center; gap: 0.9rem; }
.footer__mark { width: 46px; height: 46px; }
.footer__name {
  font-family: var(--font-display);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}
.footer__tag { font-size: 0.78rem; letter-spacing: 0.22em; text-transform: uppercase; }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.6rem; font-size: 0.9rem; }
.footer__links a { transition: color 0.2s; }
.footer__links a:hover { color: #fff; }
.footer__copy { font-size: 0.82rem; width: 100%; text-align: center; margin-top: 0.6rem; opacity: 0.7; }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  padding-top: clamp(8rem, 14vw, 11rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  background:
    radial-gradient(900px 420px at 90% -20%, rgba(91, 140, 255, 0.14), transparent 60%),
    var(--bg);
}
.page-hero__title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: 0.9rem;
}
.page-hero__sub { max-width: 38rem; color: var(--ink-soft); font-size: 1.08rem; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.contact-info__item {
  display: flex;
  gap: 1rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
}
.contact-info__item:last-of-type { border-bottom: 0; }
.contact-info__icon {
  flex: 0 0 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--blue-50);
  color: var(--blue-600);
  display: grid;
  place-items: center;
}
.contact-info__icon svg { width: 22px; height: 22px; }
.contact-info__item h3 {
  font-size: 1rem;
  color: var(--navy-900);
  margin-bottom: 0.15rem;
}
.contact-info__item p, .contact-info__item a { font-size: 0.93rem; color: var(--ink-soft); }
.contact-info__item a:hover { color: var(--blue-600); }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: clamp(1.6rem, 3vw, 2.4rem);
  box-shadow: var(--shadow-md);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-field { margin-bottom: 1.1rem; }
.form-field label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--navy-800);
  margin-bottom: 0.4rem;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  padding: 0.75rem 0.95rem;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--bg-tint);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.form-field textarea { resize: vertical; min-height: 130px; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(59, 109, 240, 0.12);
}
.form-note { font-size: 0.8rem; color: var(--ink-soft); margin-top: 0.9rem; }
.form-note a { color: var(--blue-600); text-decoration: underline; }
.form-success {
  display: none;
  text-align: center;
  padding: 2.5rem 1rem;
}
.form-success.is-visible { display: block; }
.form-success__icon {
  width: 64px; height: 64px;
  margin: 0 auto 1.2rem;
  border-radius: 50%;
  background: var(--blue-50);
  color: var(--blue-600);
  display: grid;
  place-items: center;
}
.form-success__icon svg { width: 30px; height: 30px; }
.form-success h3 { color: var(--navy-900); margin-bottom: 0.5rem; }
.form-success p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Legal / prose ---------- */
.prose {
  max-width: 46rem;
}
.prose h2 {
  font-size: 1.45rem;
  color: var(--navy-900);
  margin: 2.6rem 0 0.8rem;
  scroll-margin-top: 7rem;
}
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--ink-soft); margin-bottom: 1rem; }
.prose ul { margin: 0 0 1rem 1.3rem; color: var(--ink-soft); }
.prose li { margin-bottom: 0.4rem; }
.prose a { color: var(--blue-600); text-decoration: underline; }
.prose strong { color: var(--navy-800); }
.legal-updated {
  display: inline-block;
  font-size: 0.82rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  border-radius: 999px;
  padding: 0.35rem 0.95rem;
  margin-bottom: 1rem;
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal[data-delay="1"] { transition-delay: 0.12s; }
.reveal[data-delay="2"] { transition-delay: 0.24s; }
.reveal[data-delay="3"] { transition-delay: 0.36s; }
.reveal[data-delay="4"] { transition-delay: 0.48s; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee__track, .hero__glow, .cta::after, .hero__scroll-dot { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .impact { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav__toggle { display: flex; }
  .nav__links {
    position: fixed;
    top: 0; right: 0;
    height: 100dvh;
    width: min(20rem, 82vw);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.6rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out);
    font-size: 1.15rem;
  }
  .nav__links.is-open { transform: translateX(0); }
  .nav.menu-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.menu-open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav.menu-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero__stats { gap: 1.6rem; }
  .nav__logo { height: 40px; }
}