/* =========================================================
   PR Laang - corporate site
   Dark by default, light via prefers-color-scheme: light
   ========================================================= */

:root {
  --bg: #0b0d10;
  --bg-elev: #111418;
  --bg-alt: #0f1217;
  --surface: #141820;
  --surface-strong: #1a1f28;
  --border: #232833;
  --border-strong: #2e3441;
  --text: #eef1f5;
  --text-muted: #a6adbb;
  --text-dim: #7a8191;
  --accent: #4cc9ff;
  --accent-strong: #7ed8ff;
  --accent-ink: #0b1a24;
  --danger: #ff6b6b;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-lg: 0 30px 80px -30px rgba(0, 0, 0, 0.7);
  --shadow-md: 0 12px 30px -12px rgba(0, 0, 0, 0.55);
  --max-width: 1180px;
  --header-height: 72px;
  --brand-logo-width: 240px;
  --brand-logo-width-scrolled: 120px;
  --transition: 220ms ease;

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fa;
    --bg-elev: #ffffff;
    --bg-alt: #eef1f5;
    --surface: #ffffff;
    --surface-strong: #ffffff;
    --border: #e4e7ee;
    --border-strong: #d3d8e2;
    --text: #0b0d10;
    --text-muted: #4a5162;
    --text-dim: #6b7383;
    --accent: #0a8cd1;
    --accent-strong: #0a6faa;
    --accent-ink: #ffffff;
    --shadow-lg: 0 30px 80px -30px rgba(10, 20, 40, 0.18);
    --shadow-md: 0 12px 30px -12px rgba(10, 20, 40, 0.14);
  }
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
ul { padding: 0; margin: 0; list-style: none; }

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-strong); }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--text);
}
h1 { font-size: clamp(2.2rem, 4.2vw + 1rem, 4rem); line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 2vw + 1rem, 2.4rem); line-height: 1.15; letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; line-height: 1.3; }
p  { margin: 0 0 1em; color: var(--text-muted); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 3vw, 32px);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 14px;
  border-radius: 6px;
  font-weight: 600;
  z-index: 1000;
  transition: top var(--transition);
}
.skip-link:focus { top: 16px; color: var(--accent-ink); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.is-scrolled { border-bottom-color: var(--border); }

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 0;
  transition: padding var(--transition);
}
.site-header.is-scrolled .header-inner { padding: 8px 0; }

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
}
.brand:hover { color: var(--text); }
.brand-mark {
  flex: none;
  display: block;
  width: var(--brand-logo-width);
  height: auto;
  border-radius: 10px;
  object-fit: contain;
  transition: width var(--transition);
}
.site-header.is-scrolled .brand-mark {
  width: var(--brand-logo-width-scrolled);
}
.footer-brand .brand-mark {
  width: 120px;
  border-radius: 8px;
}

@media (max-width: 640px) {
  :root {
    --brand-logo-width: 160px;
    --brand-logo-width-scrolled: 96px;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
}
.site-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 2px;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after { transform: scaleX(1); }

.header-cta { padding: 10px 18px; font-size: 0.92rem; }

@media (max-width: 860px) {
  .site-nav { display: none; }
  .header-cta { margin-left: auto; }
}

/* ---------- Buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition),
              border-color var(--transition), color var(--transition);
}
.button:active { transform: translateY(1px); }

.button-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.button-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--accent-ink);
}

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

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(72px, 11vh, 140px) 0 clamp(60px, 9vh, 120px);
}
.hero-inner { position: relative; z-index: 1; max-width: 860px; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 6px 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  border-radius: 999px;
  margin-bottom: 22px;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.hero h1 { margin-bottom: 20px; }
.lead {
  font-size: clamp(1.05rem, 0.6vw + 0.95rem, 1.25rem);
  color: var(--text-muted);
  max-width: 62ch;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 56px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 720px;
  margin: 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--border);
}
.hero-stats > div > dt {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.hero-stats > div > dd {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}
@media (max-width: 620px) {
  .hero-stats { grid-template-columns: 1fr; gap: 14px; }
}

.hero-glow {
  position: absolute;
  inset: auto -10% -40% auto;
  width: 70%;
  max-width: 800px;
  aspect-ratio: 1;
  background: radial-gradient(closest-side,
    color-mix(in srgb, var(--accent) 55%, transparent),
    transparent 70%);
  filter: blur(40px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}
@media (prefers-color-scheme: light) {
  .hero-glow { opacity: 0.22; }
}

/* ---------- Sections ---------- */

.section {
  padding: clamp(64px, 9vh, 120px) 0;
  position: relative;
}
.section-alt { background: var(--bg-alt); }

.section-head {
  max-width: 760px;
  margin: 0 auto clamp(40px, 6vh, 72px);
  text-align: center;
}
.section-kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-lead {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 60ch;
  margin: 10px auto 0;
}

/* ---------- About / Value cards ---------- */

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform var(--transition), border-color var(--transition),
              box-shadow var(--transition);
}
.value-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.value-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.value-icon svg { width: 22px; height: 22px; }
.value-card h3 { margin-bottom: 8px; }
.value-card p { margin: 0; }

/* ---------- Services ---------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.service-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px 28px;
  transition: transform var(--transition), border-color var(--transition),
              box-shadow var(--transition);
}
.service-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.service-card-flag {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--accent) 6%, transparent),
      transparent 55%),
    var(--surface);
}
.service-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.service-card h3 { margin-bottom: 10px; }
.service-card p { margin-bottom: 18px; }

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.service-tags li {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elev);
}

.badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.badge-accent {
  background: var(--accent);
  color: var(--accent-ink);
}
.badge-muted {
  background: color-mix(in srgb, var(--text-dim) 18%, transparent);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ---------- Products ---------- */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition),
              box-shadow var(--transition);
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.product-card:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.product-card:hover::before { opacity: 1; }

.product-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.product-head h3 { margin: 0; }
.product-head .badge { margin: 0; }
.product-card p { margin-bottom: 18px; }

.product-list {
  display: grid;
  gap: 8px;
}
.product-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.product-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.65em;
  width: 10px;
  height: 2px;
  background: var(--accent);
}

/* ---------- Clients ---------- */

.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  align-items: center;
  justify-items: center;
}
.logo-grid li {
  width: 100%;
  aspect-ratio: 2 / 1;
  display: grid;
  place-items: center;
  padding: 22px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color var(--transition), background var(--transition);
}
.logo-grid li:hover { border-color: var(--border-strong); }
.logo-grid img {
  max-width: 100%;
  max-height: 56px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(1) brightness(1.6) contrast(0.9);
  opacity: 0.75;
  transition: filter var(--transition), opacity var(--transition);
}
@media (prefers-color-scheme: light) {
  .logo-grid img {
    filter: grayscale(1) contrast(0.95);
    opacity: 0.65;
  }
}
.logo-grid li:hover img {
  filter: none;
  opacity: 1;
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 40px;
  padding: 64px 0 28px;
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 1.6fr 1fr;
  gap: 40px;
  align-items: start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.footer-tag {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.footer-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  font-size: 0.9rem;
  line-height: 1.5;
}
.footer-meta strong {
  font-family: var(--font-display);
  color: var(--text);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 4px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}
.footer-nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
}
.footer-nav a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 22px;
  font-size: 0.84rem;
  color: var(--text-dim);
}

@media (max-width: 860px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-nav {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 18px;
  }
  .footer-meta { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-meta { grid-template-columns: 1fr; }
}

/* ---------- Reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}