/* ==========================================================================
   Vandebon Solutions: styles
   ========================================================================== */

:root {
  --navy-900: #0b1b2e;
  --navy-800: #11263f;
  --navy-700: #1b3556;
  --accent-600: #5a52b8;
  --accent-500: #6c65c9;
  --accent-400: #a1a1d4;
  --accent-200: #d4d4ef;

  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f5f8fc;

  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-hover: 0 2px 4px rgba(15, 23, 42, .06), 0 16px 40px rgba(15, 23, 42, .10);
  --font: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --maxw: 1140px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-600); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 650; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: 24px; }

.skip-link {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--accent-600); color: #fff; padding: 8px 14px; border-radius: 8px;
}
.skip-link:focus { top: 12px; }

:focus-visible { outline: 3px solid var(--accent-400); outline-offset: 3px; border-radius: 6px; }

.eyebrow {
  font-size: .8rem; font-weight: 650; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-600); margin-bottom: .8em;
}
.accent {
  background: linear-gradient(90deg, #c4c4ec, #8f88e0);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Buttons ---------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .8em 1.5em; border-radius: 999px; font-weight: 600; font-size: 1rem;
  border: 1.5px solid transparent; transition: transform .15s, background .2s, border-color .2s, box-shadow .2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent-600); color: #fff; box-shadow: 0 8px 24px rgba(90, 82, 184, .35); }
.btn-primary:hover { background: var(--accent-500); }
.btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .3); }
.btn-ghost:hover { border-color: #fff; }
.btn-small { padding: .5em 1.15em; font-size: .95rem; background: var(--accent-600); color: #fff !important; }
.btn-small:hover { background: var(--accent-500); }

/* Header ----------------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(11, 27, 46, .0);
  transition: background .25s, box-shadow .25s, backdrop-filter .25s;
}
.site-header.scrolled {
  background: rgba(11, 27, 46, .88);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 1.12rem; }
.brand:hover { text-decoration: none; }
.brand img { height: 42px; width: auto; }
@media (max-width: 400px) { .brand img { height: 36px; } }

.site-nav ul { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.site-nav a { color: rgba(255, 255, 255, .82); font-weight: 500; font-size: .98rem; }
.site-nav a:hover { color: #fff; text-decoration: none; }

.nav-toggle {
  display: none; background: none; border: 0; padding: 8px; cursor: pointer;
  width: 42px; height: 42px; flex-direction: column; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; height: 2px; width: 24px; background: #fff; border-radius: 2px; transition: transform .2s, opacity .2s; }
.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); }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute; top: 72px; left: 0; right: 0;
    background: var(--navy-900); border-top: 1px solid rgba(255, 255, 255, .08);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
  }
  .site-nav.open { max-height: 420px; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 24px 20px; }
  .site-nav li a { display: block; padding: 12px 0; }
  .site-nav .btn-small { margin-top: 8px; text-align: center; }
  .site-header.menu-open { background: var(--navy-900); }
}

/* Hero ------------------------------------------------------------------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 500px at 85% 20%, rgba(161, 161, 212, .18), transparent 60%),
    radial-gradient(700px 500px at 10% 90%, rgba(90, 82, 184, .25), transparent 60%),
    var(--navy-900);
  padding: 150px 0 100px;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero .eyebrow { color: var(--accent-400); }
.lead { font-size: 1.18rem; color: rgba(255, 255, 255, .78); max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 48px; }

.hero-facts { display: flex; flex-wrap: wrap; gap: 36px; list-style: none; margin: 0; padding: 28px 0 0; border-top: 1px solid rgba(255, 255, 255, .1); }
.hero-facts li { display: flex; flex-direction: column; }
.hero-facts strong { font-size: 1.15rem; }
.hero-facts span { font-size: .88rem; color: rgba(255, 255, 255, .6); }

.hero-visual svg { width: 100%; max-width: 420px; margin-left: auto; }
.hero-visual .nodes circle { animation: pulse 4s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }
.hero-visual .nodes circle:nth-child(2n) { animation-delay: 1.3s; }
.hero-visual .nodes circle:nth-child(3n) { animation-delay: 2.6s; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

@media (max-width: 900px) {
  .hero { padding: 120px 0 72px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
}

/* Sections --------------------------------------------------------------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head p:last-child { color: var(--muted); font-size: 1.08rem; }

@media (max-width: 640px) { .section { padding: 72px 0; } }

/* Cards ------------------------------------------------------------------ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #d6d4ee; }
.card p { color: var(--muted); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(161, 161, 212, .15), rgba(90, 82, 184, .15));
}
.card-icon svg, .contact-item svg {
  width: 26px; height: 26px; fill: none; stroke: var(--accent-600); stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.ticks { list-style: none; padding: 0; margin: 20px 0 0; border-top: 1px solid var(--line); padding-top: 18px; }
.ticks li { position: relative; padding-left: 26px; margin-bottom: 8px; font-size: .95rem; }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: .5em; width: 12px; height: 7px;
  border-left: 2px solid var(--accent-600); border-bottom: 2px solid var(--accent-600); transform: rotate(-45deg);
}

@media (max-width: 960px) { .cards { grid-template-columns: 1fr; max-width: 620px; } }

/* Steps ------------------------------------------------------------------ */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: none; }
.steps li { position: relative; padding: 28px 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--line); }
.steps p { color: var(--muted); margin: 0; font-size: .97rem; }
.step-num {
  display: inline-block; font-weight: 700; font-size: .85rem; letter-spacing: .08em;
  color: var(--accent-600); background: rgba(90, 82, 184, .08); padding: 4px 10px; border-radius: 999px; margin-bottom: 14px;
}
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* About ------------------------------------------------------------------ */
.about.has-photo { display: grid; grid-template-columns: 320px 1fr; gap: 64px; align-items: center; }
.about-copy p { color: var(--muted); }
.about-copy p strong { color: var(--ink); }
.about-photo img { width: 100%; height: auto; aspect-ratio: 1; border-radius: 24px; box-shadow: var(--shadow-hover); }
.meta-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(3, auto); gap: 20px 40px; justify-content: start; }
.meta-list li { display: flex; flex-direction: column; font-weight: 600; }
.meta-list span { font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }

@media (max-width: 860px) {
  .about.has-photo { grid-template-columns: 1fr; gap: 36px; }
  .about-photo { max-width: 240px; }
  .meta-list { grid-template-columns: 1fr 1fr; }
}

/* Certifications --------------------------------------------------------- */
.certs { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.certs li {
  display: flex; flex-direction: column; gap: 2px; padding: 20px 22px;
  background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--accent-600);
  border-radius: 10px;
}
.certs strong { font-size: 1rem; }
.certs span { font-size: .88rem; color: var(--muted); }
@media (max-width: 960px) { .certs { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .certs { grid-template-columns: 1fr; } }

/* Contact ---------------------------------------------------------------- */
.contact {
  color: #fff;
  background:
    radial-gradient(700px 400px at 90% 0%, rgba(161, 161, 212, .18), transparent 60%),
    var(--navy-900);
}
.contact .eyebrow { color: var(--accent-400); }
.contact p { color: rgba(255, 255, 255, .75); font-size: 1.08rem; max-width: 30em; }
.contact-inner { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.contact-actions { display: flex; flex-direction: column; gap: 14px; }
.contact-item {
  display: flex; align-items: center; gap: 14px; color: #fff; font-weight: 500;
  padding: 16px 22px; border-radius: 12px; border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .04); transition: background .2s, border-color .2s;
  overflow-wrap: anywhere;
}
.contact-item:hover { text-decoration: none; background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .3); }
.contact-item svg { stroke: var(--accent-400); flex-shrink: 0; }
@media (max-width: 860px) { .contact-inner { grid-template-columns: 1fr; } }

/* Footer ----------------------------------------------------------------- */
.site-footer { background: #08141f; color: rgba(255, 255, 255, .55); font-size: .9rem; padding: 28px 0; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.footer-inner p { margin: 0; }

/* Reveal on scroll ------------------------------------------------------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

/* 404 -------------------------------------------------------------------- */
.page-404 { min-height: 100vh; display: grid; place-items: center; padding: 24px; text-align: center; }
.page-404 .container { position: relative; }
.page-404 .lead { margin: 0 auto 32px; }