/* ============================================================
   Tier 3 Solutions — style.css
   ============================================================ */
:root {
  --bg: #0a0f1a;
  --bg-alt: #0e1524;
  --surface: #121b2e;
  --surface-2: #16213a;
  --border: rgba(148, 163, 184, 0.14);
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #51a1dd;
  --accent-2: #83c2ef;
  --accent-soft: rgba(81, 161, 221, 0.16);
  --radius: 16px;
  --shadow: 0 20px 50px -20px rgba(2, 6, 23, 0.8);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:active { transform: translateY(1px); }

.btn--accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #06121f;
  box-shadow: 0 8px 24px -8px rgba(81, 161, 221, 0.55);
}
.btn--accent:hover { box-shadow: 0 12px 30px -8px rgba(81, 161, 221, 0.75); transform: translateY(-1px); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

.btn--sm { padding: 9px 18px; font-size: 0.85rem; }
.btn--block { width: 100%; }

/* ---------------- Nav ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 15, 26, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.brand__mark { width: 34px; height: 34px; }
.brand__text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand__text em {
  font-style: normal;
  color: var(--accent-2);
  font-weight: 500;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__links a:not(.btn) {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s ease;
}
.nav__links a:not(.btn):hover { color: var(--text); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
  text-align: center;
}
.hero__glow {
  position: absolute;
  inset: -40% -20% auto;
  height: 130%;
  background:
    radial-gradient(600px 320px at 50% 0%, rgba(81, 161, 221, 0.22), transparent 70%),
    radial-gradient(420px 260px at 72% 10%, rgba(34, 211, 238, 0.12), transparent 70%);
  pointer-events: none;
}
.hero__inner { position: relative; }
.hero__eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 26px;
}
.hero__title {
  font-size: clamp(2.4rem, 5.6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin-bottom: 22px;
}
.grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  max-width: 620px;
  margin: 0 auto 36px;
  color: var(--text-dim);
  font-size: 1.1rem;
}
.hero__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 56px;
}
.hero__stats {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.hero__stats li {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 150px;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.hero__stats strong {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__stats span { font-size: 0.82rem; color: var(--text-dim); }

/* ---------------- Sections ---------------- */
.section { padding: 96px 0; }
.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}
.section__head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section__eyebrow {
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section__title {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 14px;
}
.section__lead { color: var(--text-dim); }

/* ---------------- Service cards ---------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(81, 161, 221, 0.45);
  box-shadow: var(--shadow);
}
.card__icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-2);
  border: 1px solid rgba(81, 161, 221, 0.3);
  margin-bottom: 20px;
}
.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.card > p {
  color: var(--text-dim);
  font-size: 0.93rem;
  margin-bottom: 16px;
}
.card__list {
  list-style: none;
  margin-top: auto;
  display: grid;
  gap: 8px;
}
.card__list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-dim);
  font-size: 0.88rem;
}
.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.card--cta {
  background: linear-gradient(160deg, var(--surface-2) 0%, var(--surface) 100%);
  border-color: rgba(81, 161, 221, 0.4);
  justify-content: center;
  gap: 14px;
}
.card--cta h3 { font-size: 1.25rem; }

/* ---------------- Partner banner ---------------- */
.partner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  align-items: center;
  gap: 40px;
}
.partner .section__eyebrow,
.partner .section__title { text-align: left; }
.partner__text > p { color: var(--text-dim); margin-bottom: 24px; }
.partner__badges {
  display: grid;
  gap: 14px;
}
.badge {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.92rem;
}
.badge span {
  display: grid;
  place-items: center;
  min-width: 52px;
  height: 40px;
  padding: 0 10px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-2);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}


/* ---------------- Contact ---------------- */
.contact {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 20px;
  align-items: stretch;
}
.contact__info,
.contact__cta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
}
.contact__info {
  display: grid;
  align-content: start;
  gap: 26px;
}
.contact__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.contact__item a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}
.contact__item a:hover { color: var(--accent-2); }
.contact__item span:not(.contact__label) { font-weight: 500; }
.contact__cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  background: linear-gradient(160deg, var(--surface-2) 0%, var(--surface) 100%);
}
.contact__cta h3 { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.01em; }
.contact__cta > p { color: var(--text-dim); flex: 1; }
.contact__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------- Footer ---------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  background: var(--bg-alt);
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}
.footer__brand { display: flex; align-items: center; gap: 12px; }
.footer__mark { width: 30px; height: 30px; }
.footer__name { font-weight: 700; }
.footer__tag { font-size: 0.8rem; color: var(--text-dim); }
.footer__nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.88rem;
}
.footer__nav a:hover { color: var(--text); }
.footer__legal { font-size: 0.8rem; color: var(--text-dim); }


/* ---------------- Reveal animation ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------------- Responsive ---------------- */
@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .partner { grid-template-columns: 1fr; }
  .partner__badges { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
  .section { padding: 72px 0; }
  .hero { padding: 80px 0 64px; }
  .hero__stats li { flex: 1 1 130px; }

  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 10px 4%;
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links a:not(.btn) { padding: 14px 6px; border-bottom: 1px solid var(--border); }
  .nav__cta { margin: 14px 0 10px; }

  .contact { grid-template-columns: 1fr; }
  .partner__badges { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; }
}