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

:root {
  --clr-bg:        #0a0e1a;
  --clr-surface:   #111827;
  --clr-surface2:  #1a2235;
  --clr-border:    rgba(255,255,255,.08);
  --clr-primary:   #6366f1;   /* indigo */
  --clr-primary2:  #8b5cf6;   /* violet */
  --clr-accent:    #06b6d4;   /* cyan */
  --clr-text:      #e2e8f0;
  --clr-muted:     #94a3b8;
  --clr-white:     #ffffff;
  --radius:        12px;
  --radius-lg:     20px;
  --shadow:        0 4px 24px rgba(0,0,0,.4);
  --transition:    .25s ease;
  --max-w:         1180px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { cursor: pointer; font-family: inherit; }

/* ── UTILITIES ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2rem);
}

.gradient-text {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: 9999px;
  font-size: .95rem;
  font-weight: 600;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary2));
  color: var(--clr-white);
  box-shadow: 0 0 20px rgba(99,102,241,.35);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(99,102,241,.55);
}

.btn--ghost {
  border-color: var(--clr-border);
  color: var(--clr-text);
  background: rgba(255,255,255,.04);
}
.btn--ghost:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(99,102,241,.08);
}

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

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 100;
  padding-block: 1.1rem;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav--scrolled {
  background: rgba(10,14,26,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--clr-border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.02em;
}
.logo-gen { color: var(--clr-white); }
.logo-bpa { color: var(--clr-primary); }
.nav__links {
  display: flex;
  gap: 2rem;
}
.nav__links a {
  color: var(--clr-muted);
  font-size: .9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--clr-white); }

/* ── HERO ── */
.hero {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 100svh;
  padding-block: 10rem 6rem;
  text-align: center;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem 1rem;
  border-radius: 9999px;
  border: 1px solid rgba(99,102,241,.4);
  background: rgba(99,102,241,.1);
  color: var(--clr-primary);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.hero__title {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--clr-white);
  max-width: 800px;
}
.hero__sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--clr-muted);
  max-width: 620px;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: .5rem;
}

/* Glow background blob */
.hero__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(99,102,241,.22) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 80% 80%, rgba(6,182,212,.12) 0%, transparent 60%);
  pointer-events: none;
}

/* ── SECTIONS ── */
.section {
  padding-block: clamp(4rem, 8vw, 7rem);
}
.section--alt {
  background: var(--clr-surface);
}
.section__header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
}
.section__label {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-primary);
}
.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--clr-white);
}
.section__desc {
  color: var(--clr-muted);
  max-width: 540px;
  font-size: .98rem;
}

/* ── ABOUT ── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about__text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  color: var(--clr-muted);
  font-size: .97rem;
}
.about__text strong { color: var(--clr-white); }
.about__stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.stat {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}
.stat__number {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: -.02em;
}
.stat__label {
  font-size: .82rem;
  color: var(--clr-muted);
  font-weight: 500;
}

/* ── SERVICES ── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.card:hover {
  border-color: rgba(99,102,241,.5);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(99,102,241,.15);
}
.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99,102,241,.1);
  border-radius: 12px;
  color: var(--clr-primary);
}
.card__icon svg { width: 24px; height: 24px; }
.card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-white);
}
.card__text { color: var(--clr-muted); font-size: .91rem; }

/* ── PILLARS ── */
.pillars__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}
.pillar {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.pillar__num {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.04em;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pillar h4 { font-size: 1rem; font-weight: 700; color: var(--clr-white); }
.pillar p  { font-size: .88rem; color: var(--clr-muted); }

/* ── CONTACT ── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.contact__details {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.contact__item {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}
.contact__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99,102,241,.1);
  border-radius: 10px;
  color: var(--clr-primary);
}
.contact__icon svg { width: 20px; height: 20px; }
.contact__item strong { display: block; color: var(--clr-white); font-size: .9rem; margin-bottom: .2rem; }
.contact__item p { color: var(--clr-muted); font-size: .9rem; }
.contact__item a { color: var(--clr-primary); transition: color var(--transition); }
.contact__item a:hover { color: var(--clr-accent); }

/* Form */
.contact__form {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form__group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.form__group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--clr-muted);
  letter-spacing: .02em;
}
.form__group input,
.form__group textarea {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  color: var(--clr-text);
  font-family: inherit;
  font-size: .93rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}
.form__group input::placeholder,
.form__group textarea::placeholder { color: rgba(148,163,184,.45); }
.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.2);
}

/* ── FOOTER ── */
.footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding-block: 2.5rem;
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}
.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .3rem;
}
.footer__brand .logo-gen { font-size: 1.3rem; font-weight: 800; }
.footer__brand .logo-bpa { font-size: 1.3rem; font-weight: 800; }
.footer__brand p { font-size: .8rem; color: var(--clr-muted); }
.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}
.footer__links a {
  font-size: .85rem;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--clr-white); }
.footer__copy { font-size: .78rem; color: var(--clr-muted); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav__links { display: none; }

  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero { padding-block: 8rem 4rem; }
}

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