/* =========================================================================
   Beyond Data — beyonddata.co.za
   Dark steel-blue + polished chrome, echoing the BeyondData brand identity.
   ========================================================================= */

:root {
  /* Backgrounds: near-black charcoal → steel-blue (as in the brand artwork) */
  --bg-0: #0a0f13;
  --bg-1: #0e151b;
  --bg-2: #131e26;
  --panel: rgba(255, 255, 255, 0.025);
  --panel-strong: rgba(255, 255, 255, 0.04);
  --line: rgba(174, 196, 208, 0.12);
  --line-strong: rgba(174, 196, 208, 0.22);

  /* Steel & chrome */
  --steel: #2b3d49;
  --steel-2: #3e525f;
  --accent: #7fb6cb;          /* cool steel-cyan highlight */
  --accent-soft: rgba(127, 182, 203, 0.16);

  /* Type colours */
  --text: #dbe3e8;
  --muted: #93a6b1;
  --muted-2: #6f828d;
  --heading: #eef3f6;

  /* Chrome gradient used for the wordmark & key words */
  --chrome: linear-gradient(180deg, #ffffff 0%, #d7e0e5 38%, #93a6b1 56%, #c4d0d6 72%, #eef4f7 100%);

  --maxw: 1140px;
  --radius: 16px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-display: "Jost", "Century Gothic", "Futura", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* --------------------------------------------------------------------- Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg-0);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 28px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: #06222c; padding: 10px 16px; border-radius: 0 0 8px 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* --------------------------------------------------------------- Chrome text */
.chrome {
  background: var(--chrome);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* --------------------------------------------------------------------- Brand */
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.5));
}
.brand-word {
  font-family: var(--font-display);
  font-weight: 300; font-size: 1.42rem; letter-spacing: 0.01em; line-height: 1;
  background: var(--chrome); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.brand-word-2 { font-weight: 500; }

/* -------------------------------------------------------------------- Header */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(10, 15, 19, 0.78);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 78px; }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a {
  font-family: var(--font-display); font-weight: 400; font-size: 1rem; letter-spacing: 0.02em;
  color: var(--muted); transition: color 0.25s var(--ease); position: relative;
}
.nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0;
  background: var(--accent); transition: width 0.3s var(--ease);
}
.nav a:not(.nav-cta):hover { color: var(--text); }
.nav a:not(.nav-cta):hover::after { width: 100%; }

.nav-cta {
  border: 1px solid var(--line-strong); border-radius: 999px; padding: 9px 20px;
  color: var(--text) !important; transition: all 0.25s var(--ease);
}
.nav-cta:hover {
  border-color: var(--accent); background: var(--accent-soft); color: #fff !important;
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: 0;
  padding: 10px; cursor: pointer;
}
.nav-toggle span {
  width: 26px; height: 2px; background: var(--text); border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--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: 168px 0 110px; overflow: hidden; isolation: isolate; }
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(1100px 680px at 72% -8%, #20323d 0%, rgba(32, 50, 61, 0) 60%),
    radial-gradient(900px 600px at 12% 110%, #16242e 0%, rgba(22, 36, 46, 0) 55%),
    linear-gradient(170deg, #060a0d 0%, #0c151b 45%, #16242e 100%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: -1; opacity: 0.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(circle at 50% 20%, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at 50% 20%, #000 0%, transparent 72%);
}
.hero-inner { position: relative; z-index: 2; max-width: 760px; }

.eyebrow {
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.28em;
  font-size: 0.78rem; color: var(--accent); margin-bottom: 22px; font-weight: 500;
}
.hero-title {
  font-family: var(--font-display); font-weight: 200;
  font-size: clamp(2.9rem, 7.5vw, 5.4rem); line-height: 1.02; letter-spacing: -0.01em;
  color: var(--heading); margin-bottom: 26px;
}
.hero-lead {
  font-size: clamp(1.05rem, 2.2vw, 1.32rem); color: var(--muted); max-width: 600px;
  margin-bottom: 30px;
}

.tagline { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 14px 26px; margin-bottom: 38px; }
.tagline li {
  font-family: var(--font-display); font-weight: 400; letter-spacing: 0.04em;
  color: var(--text); position: relative; padding-left: 22px; font-size: 1.02rem;
}
.tagline li::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-emblem {
  position: absolute; z-index: 1; right: -60px; top: 50%;
  width: clamp(320px, 38vw, 540px); opacity: 0.92;
  filter: drop-shadow(0 30px 70px rgba(0, 0, 0, 0.6));
  pointer-events: none;
}
.hero-emblem.reveal.in { transform: translateY(-46%); }

/* ------------------------------------------------------------------- Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-display); font-weight: 500; font-size: 1.02rem; letter-spacing: 0.01em;
  padding: 14px 28px; border-radius: 999px; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.3s var(--ease), background 0.3s, border-color 0.3s;
}
.btn-primary {
  color: #08202a; background: linear-gradient(180deg, #f4f9fb 0%, #cdd9df 50%, #aebcc4 100%);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(127, 182, 203, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.8); }
.btn-ghost { color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent); background: var(--accent-soft); }

/* ------------------------------------------------------------------ Sections */
.section { padding: 104px 0; position: relative; }
.section-alt { background: linear-gradient(180deg, var(--bg-1), var(--bg-0)); border-block: 1px solid var(--line); }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-kicker {
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.26em;
  font-size: 0.76rem; color: var(--accent); font-weight: 500; margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2rem, 4.2vw, 2.9rem); line-height: 1.1; color: var(--heading); letter-spacing: -0.01em;
}
.section-sub { margin-top: 18px; color: var(--muted); font-size: 1.08rem; }

/* --------------------------------------------------------------- Statement */
.statement { padding: 92px 0; border-bottom: 1px solid var(--line); }
.statement-text {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(1.4rem, 3.2vw, 2.15rem); line-height: 1.42; color: var(--text);
  max-width: 960px;
}
.statement-text strong { color: var(--heading); font-weight: 500; }
.statement .section-kicker { margin-bottom: 24px; }

/* ----------------------------------------------------------------- Service cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 30px; transition: transform 0.35s var(--ease), border-color 0.35s, background 0.35s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(160deg, rgba(127, 182, 203, 0.08), transparent 42%);
  opacity: 0; transition: opacity 0.35s;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-strong); background: var(--panel-strong); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); margin-bottom: 22px;
  border: 1px solid rgba(127, 182, 203, 0.25);
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; color: var(--heading); margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 0.99rem; }

.tags { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.tags li {
  font-family: var(--font-display); font-size: 0.78rem; letter-spacing: 0.02em;
  color: var(--muted-2); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}

/* ------------------------------------------------------------------ Case studies */
.case-feature {
  display: grid; grid-template-columns: 1.7fr 1fr; gap: 0;
  background: var(--panel); border: 1px solid var(--line-strong); border-radius: var(--radius);
  overflow: hidden; margin-bottom: 22px;
}
.case-body { padding: 42px 44px; }
.case-tag {
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.16em;
  font-size: 0.72rem; color: var(--accent); margin-bottom: 14px;
}
.case-title { font-family: var(--font-display); font-weight: 400; font-size: 1.72rem; color: var(--heading); margin-bottom: 16px; line-height: 1.15; }
.case-body p { color: var(--muted); }
.case-body p strong, .case p strong { color: var(--text); font-weight: 600; }
.case-points { list-style: none; padding: 0; margin-top: 22px; display: grid; gap: 11px; }
.case-points li { position: relative; padding-left: 26px; color: var(--muted); font-size: 0.98rem; }
.case-points li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 12px; height: 7px;
  border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.case-metric {
  display: flex; flex-direction: column; justify-content: center; gap: 10px; padding: 42px 40px;
  background:
    radial-gradient(420px 280px at 80% 20%, rgba(127, 182, 203, 0.14), transparent 70%),
    linear-gradient(160deg, #14222b, #0c141a);
  border-left: 1px solid var(--line);
}
.metric-big { font-family: var(--font-display); font-weight: 300; font-size: clamp(1.8rem, 4vw, 2.6rem); color: var(--heading); line-height: 1.05; }
.metric-big em { font-style: normal; color: var(--accent); padding: 0 6px; }
.metric-label { color: var(--muted); font-size: 0.92rem; }

.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.case {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 32px; transition: transform 0.35s var(--ease), border-color 0.35s, background 0.35s;
}
.case-grid .case:hover { transform: translateY(-5px); border-color: var(--line-strong); background: var(--panel-strong); }
.case-grid .case-title { font-size: 1.42rem; font-weight: 500; }
.case p { color: var(--muted); font-size: 0.99rem; }

/* ------------------------------------------------------------------- Approach */
.approach-wrap { display: grid; grid-template-columns: 0.8fr 1.5fr; gap: 48px; align-items: start; }
.approach-wrap .section-head { margin-bottom: 0; position: sticky; top: 110px; }
.principles { list-style: none; padding: 0; counter-reset: none; display: grid; gap: 14px; }
.principles li {
  display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: start;
  padding: 28px 30px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); transition: border-color 0.35s, background 0.35s;
}
.principles li:hover { border-color: var(--line-strong); background: var(--panel-strong); }
.principle-no { font-family: var(--font-display); font-weight: 300; font-size: 1.5rem; color: var(--accent); line-height: 1.3; }
.principles h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.26rem; color: var(--heading); margin-bottom: 8px; }
.principles p { color: var(--muted); font-size: 0.99rem; }

/* ---------------------------------------------------------------------- About */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 52px; align-items: start; }
.about-intro p { color: var(--muted); font-size: 1.06rem; margin-top: 18px; }
.about-intro p:first-of-type { margin-top: 26px; }
.about-intro em { color: var(--text); font-style: italic; }

.bio {
  background: var(--panel); border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 36px 34px;
  background-image:
    radial-gradient(340px 220px at 100% 0%, rgba(127, 182, 203, 0.10), transparent 70%);
}
.bio-name { font-family: var(--font-display); font-weight: 400; font-size: 1.6rem; color: var(--heading); }
.bio-role { font-family: var(--font-display); color: var(--accent); letter-spacing: 0.03em; margin-bottom: 18px; font-size: 0.96rem; }
.bio-text { color: var(--muted); font-size: 1rem; }
.bio-creds { list-style: none; padding: 22px 0 0; margin-top: 22px; border-top: 1px solid var(--line); display: grid; gap: 14px; }
.bio-creds li { color: var(--muted); font-size: 0.94rem; padding-left: 18px; position: relative; }
.bio-creds li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.bio-creds strong { color: var(--text); }

/* -------------------------------------------------------------------- Contact */
.contact { text-align: center; overflow: hidden; isolation: isolate; padding: 120px 0; }
.contact .hero-grid { z-index: -1; opacity: 0.4; -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 70%); mask-image: radial-gradient(circle at 50% 50%, #000, transparent 70%); }
.contact-inner { max-width: 720px; margin-inline: auto; }
.contact .section-kicker { text-align: center; }
.contact-sub { color: var(--muted); font-size: 1.1rem; margin: 18px auto 34px; max-width: 580px; }
.email-link {
  display: inline-block; font-family: var(--font-display); font-weight: 300;
  font-size: clamp(1.6rem, 4.5vw, 2.6rem); letter-spacing: 0.01em; margin-bottom: 34px;
  transition: opacity 0.25s;
}
.email-link:hover { opacity: 0.82; }

/* --------------------------------------------------------------------- Footer */
.site-footer { border-top: 1px solid var(--line); padding: 56px 0 48px; background: var(--bg-0); }
.footer-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 14px; }
.footer-brand { display: inline-flex; align-items: center; gap: 11px; }
.footer-brand .brand-word { font-size: 1.2rem; }
.footer-tag { font-family: var(--font-display); letter-spacing: 0.14em; color: var(--muted); font-size: 0.9rem; }
.footer-meta { color: var(--muted-2); font-size: 0.9rem; line-height: 1.7; }
.footer-meta a { color: var(--muted); border-bottom: 1px solid var(--line); transition: color 0.25s, border-color 0.25s; }
.footer-meta a:hover { color: var(--accent); border-color: var(--accent); }
.footer-copy { color: var(--muted-2); font-size: 0.82rem; margin-top: 6px; }

/* ------------------------------------------------------------- Scroll reveal */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.cards .reveal.in, .case-grid .reveal.in, .principles .reveal.in { transition-delay: var(--d, 0ms); }

/* ---------------------------------------------------------------- Responsive */
@media (max-width: 980px) {
  .approach-wrap { grid-template-columns: 1fr; gap: 32px; }
  .approach-wrap .section-head { position: static; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .case-feature { grid-template-columns: 1fr; }
  .case-metric { border-left: 0; border-top: 1px solid var(--line); flex-direction: row; align-items: baseline; flex-wrap: wrap; gap: 8px 18px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  .nav {
    position: fixed; inset: 78px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(8, 13, 17, 0.97); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line); padding: 12px 28px 24px;
    transform: translateY(-130%); transition: transform 0.4s var(--ease); visibility: hidden;
  }
  .nav.open { transform: translateY(0); visibility: visible; }
  .nav a { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 1.1rem; }
  .nav a:last-child { border-bottom: 0; }
  .nav-cta { text-align: center; margin-top: 16px; }
  .nav a:not(.nav-cta)::after { display: none; }
  .nav-toggle { display: flex; }
  .hero-emblem { opacity: 0.16; right: -120px; }
  .hero { padding-top: 130px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .container { padding-inline: 20px; }
  .section { padding: 76px 0; }
  .cards, .case-grid { grid-template-columns: 1fr; }
  .case-body { padding: 32px 26px; }
  .case-metric { padding: 28px 26px; }
  .principles li { grid-template-columns: 1fr; gap: 8px; padding: 24px 24px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
}