/* ========================================================
   Pixel Data Solutions — Global Stylesheet
   Palette: deep navy, primary blue, sky blue, white
   ======================================================== */

:root {
  --navy-900: #0A1F44;
  --navy-800: #0E2A5C;
  --blue-600: #0B5FFF;
  --blue-500: #3D86FF;
  --blue-400: #7FB0FF;
  --blue-050: #EAF2FF;
  --ink-700: #1F2A44;
  --ink-500: #4A5675;
  --ink-300: #8B95AE;
  --line:    #E3EAF5;
  --white:   #FFFFFF;
  --bg:      #F7FAFF;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(11, 95, 255, 0.06);
  --shadow-md: 0 12px 32px rgba(10, 31, 68, 0.08);
  --shadow-lg: 0 24px 60px rgba(10, 31, 68, 0.14);

  --container: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Manrope', 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--white);
  color: var(--ink-700);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--blue-600); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--navy-900); }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.nav .brand img { height: 38px; }
.nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav ul a {
  color: var(--ink-700);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
}
.nav ul a.active,
.nav ul a:hover { color: var(--blue-600); }
.nav ul a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--blue-600);
  border-radius: 2px;
}
.nav .cta {
  background: var(--navy-900);
  color: var(--white);
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform .2s ease, background .2s ease;
}
.nav .cta:hover { background: var(--blue-600); transform: translateY(-1px); color: #fff; }

.menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--navy-900); margin: 5px 0; border-radius: 2px;
  transition: transform .2s ease;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 0;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.btn-primary { background: var(--blue-600); color: var(--white); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--navy-900); color: var(--white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--navy-900); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--blue-600); color: var(--blue-600); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(1000px 500px at 110% -10%, rgba(11,95,255,0.10), transparent 60%),
    radial-gradient(700px 400px at -10% 30%, rgba(125,176,255,0.16), transparent 60%),
    var(--white);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-600);
  background: var(--blue-050);
  padding: 8px 14px;
  border-radius: 999px;
}
.hero h1 {
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  margin: 22px 0 18px;
  color: var(--navy-900);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero h1 .accent {
  background: linear-gradient(90deg, var(--blue-600), var(--blue-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  font-size: 1.1rem;
  color: var(--ink-500);
  max-width: 540px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero illustration card */
.hero-art {
  position: relative;
  background: var(--navy-900);
  border-radius: var(--radius-lg);
  padding: 32px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.hero-art::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(500px 250px at 80% 10%, rgba(61,134,255,0.45), transparent 60%),
    radial-gradient(400px 250px at 10% 80%, rgba(127,176,255,0.18), transparent 60%);
}
.hero-art .tag {
  position: relative; z-index: 1;
  font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-400);
}
.hero-art h3 {
  position: relative; z-index: 1;
  font-size: 1.5rem; font-weight: 700; margin: 12px 0 22px;
}
.hero-art .pixel-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(10, 1fr); gap: 6px;
}
.hero-art .pixel-grid span {
  aspect-ratio: 1; border-radius: 4px; background: rgba(255,255,255,0.06);
}
.hero-art .pixel-grid span.on { background: var(--blue-500); box-shadow: 0 0 14px rgba(61,134,255,0.55); }
.hero-art .pixel-grid span.dim { background: rgba(127,176,255,0.35); }

/* ---------- Section base ---------- */
section { padding: 84px 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.eyebrow {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-600);
}
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  color: var(--navy-900);
  margin: 12px 0 14px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.section-head p { color: var(--ink-500); font-size: 1.05rem; }

/* ---------- Services grid ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}
.service-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}
.service-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: grid; place-items: center;
  background: var(--blue-050);
  color: var(--blue-600);
  margin-bottom: 18px;
}
.service-card h3 {
  font-size: 1.15rem; font-weight: 700; color: var(--navy-900);
  margin: 0 0 10px;
}
.service-card p { color: var(--ink-500); font-size: 0.96rem; margin: 0 0 16px; }
.service-card .more {
  font-size: 0.88rem; font-weight: 700;
  color: var(--blue-600);
  display: inline-flex; align-items: center; gap: 6px;
}

/* ---------- Stats / trust ---------- */
.stats {
  background: var(--navy-900);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  overflow: hidden;
}
.stats::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px 300px at 100% 0%, rgba(61,134,255,0.35), transparent 60%);
  pointer-events: none;
}
.stat { position: relative; z-index: 1; }
.stat .num {
  font-size: 2.4rem; font-weight: 800; color: #fff; letter-spacing: -0.02em;
}
.stat .lbl { color: var(--blue-400); font-size: 0.9rem; }

/* ---------- About / value props ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}
.value-card {
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--bg);
  border: 1px solid var(--line);
}
.value-card h4 { color: var(--navy-900); margin: 0 0 8px; font-size: 1.05rem; font-weight: 700; }
.value-card p { color: var(--ink-500); margin: 0; font-size: 0.95rem; }

/* ---------- Process timeline ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}
.step {
  position: relative;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.step .n {
  font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--blue-600); font-weight: 700;
}
.step h4 { color: var(--navy-900); margin: 8px 0; }
.step p { color: var(--ink-500); margin: 0; font-size: 0.92rem; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: linear-gradient(120deg, var(--blue-600) 0%, var(--navy-900) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-banner h3 { font-size: clamp(1.4rem, 2.4vw, 1.8rem); margin: 0 0 6px; }
.cta-banner p { margin: 0; color: rgba(255,255,255,0.8); }
.cta-banner .btn-primary { background: #fff; color: var(--navy-900); }
.cta-banner .btn-primary:hover { background: var(--blue-050); color: var(--navy-900); }

/* ---------- Services page deep cards ---------- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.service-detail:last-child { border-bottom: 0; }
.service-detail.reverse { direction: rtl; }
.service-detail.reverse > * { direction: ltr; }
.service-detail h3 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  color: var(--navy-900);
  font-weight: 800;
  margin: 12px 0 14px;
  letter-spacing: -0.01em;
}
.service-detail ul {
  list-style: none; padding: 0; margin: 16px 0 0;
}
.service-detail ul li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  color: var(--ink-700);
}
.service-detail ul li::before {
  content: "";
  position: absolute; left: 0; top: 9px;
  width: 12px; height: 12px;
  background: var(--blue-600);
  border-radius: 3px;
}
.service-visual {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  min-height: 280px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.service-visual svg { width: 100%; max-width: 320px; height: auto; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
}
.contact-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 32px;
}
.contact-card h4 {
  font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--blue-600); margin: 0 0 8px;
}
.contact-card p { color: var(--ink-700); margin: 0; font-size: 1.05rem; line-height: 1.7; }
.contact-card a { font-weight: 600; }

form.contact-form { display: grid; gap: 16px; }
form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-700);
  margin-bottom: 6px;
}
form input, form textarea, form select {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  font-size: 0.98rem;
  font-family: inherit;
  color: var(--ink-700);
  transition: border-color .2s ease, box-shadow .2s ease;
}
form input:focus, form textarea:focus, form select:focus {
  outline: none;
  border-color: var(--blue-600);
  box-shadow: 0 0 0 4px var(--blue-050);
}
form textarea { resize: vertical; min-height: 140px; }
form .btn-primary { justify-self: flex-start; }

/* ---------- About hero / page title ---------- */
.page-hero {
  padding: 96px 0 56px;
  background:
    radial-gradient(700px 400px at 90% -20%, rgba(11,95,255,0.10), transparent 60%),
    var(--white);
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--navy-900);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 16px 0 14px;
}
.page-hero p { color: var(--ink-500); max-width: 640px; font-size: 1.1rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-900);
  color: #C9D5EE;
  padding: 72px 0 24px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.site-footer h5 {
  color: #fff;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 18px;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer a { color: #C9D5EE; font-size: 0.95rem; }
.site-footer a:hover { color: var(--blue-400); }
.site-footer p { color: #C9D5EE; font-size: 0.95rem; margin: 0 0 12px; }
.site-footer .brand-line {
  font-size: 0.9rem;
  color: var(--blue-400);
  letter-spacing: 0.04em;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.10);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.88rem;
  color: #8BA0CC;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero { padding: 64px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .stats { grid-template-columns: repeat(2, 1fr); padding: 36px 28px; }
  .service-detail { grid-template-columns: 1fr; gap: 28px; padding: 32px 0; }
  .service-detail.reverse { direction: ltr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  section { padding: 64px 0; }

  .menu-toggle { display: block; }
  .nav ul {
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 18px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .nav ul li { padding: 10px 0; border-bottom: 1px solid var(--line); }
  .nav ul li:last-child { border-bottom: 0; }
  .nav.open ul {
    opacity: 1; transform: translateY(0); pointer-events: auto;
  }
  .nav .cta { display: none; }
}

@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 18px; padding: 28px 22px; }
  form .row { grid-template-columns: 1fr; }
  .cta-banner { padding: 36px 28px; }
}