/* =========================================================
   HOLENTRIX LTD — Shared Stylesheet
   Dark / neon futuristic theme
   ========================================================= */

/* ---------------------------------------------------------
   CSS Custom Properties (Theme Variables)
   --------------------------------------------------------- */
:root {
  /* Colours */
  --clr-bg:          #090b12;
  --clr-bg-card:     #0d1120;
  --clr-bg-nav:      rgba(9, 11, 18, 0.92);
  --clr-primary:     #00e5ff;
  --clr-primary-dim: #00b8cc;
  --clr-accent:      #7c3aed;
  --clr-accent-dim:  #5b21b6;
  --clr-text:        #e2e8f0;
  --clr-text-muted:  #8892a4;
  --clr-border:      rgba(0, 229, 255, 0.18);
  --clr-glow:        rgba(0, 229, 255, 0.35);
  --clr-glow-accent: rgba(124, 58, 237, 0.35);

  /* Typography */
  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont,
               'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  /* Sizing */
  --nav-h: 68px;
  --radius: 10px;
  --radius-lg: 16px;
  --max-w: 1100px;

  /* Transitions */
  --transition: 0.25s ease;
}

/* ---------------------------------------------------------
   Reset / Base
   --------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--clr-primary);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover {
  color: #fff;
  opacity: 0.9;
}

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

ul, ol {
  padding-left: 1.4rem;
}

li {
  margin-bottom: 0.4rem;
}

/* ---------------------------------------------------------
   Scrollbar (Webkit)
   --------------------------------------------------------- */
::-webkit-scrollbar { width: 7px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb {
  background: var(--clr-accent);
  border-radius: 4px;
}

/* ---------------------------------------------------------
   Navigation
   --------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--clr-bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
}

.nav__inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__logo span {
  color: var(--clr-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  padding: 0;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--clr-primary);
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  aria-label: "Toggle menu";
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 700px) {
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    background: var(--clr-bg-nav);
    backdrop-filter: blur(16px);
    padding: 1.5rem 2rem;
    gap: 1.2rem;
    border-bottom: 1px solid var(--clr-border);
    transform: translateY(-110%);
    transition: transform 0.3s ease;
    z-index: 99;
  }

  .nav__links.open {
    transform: translateY(0);
  }

  .nav__links a { font-size: 1rem; }
}

/* ---------------------------------------------------------
   Hero Section
   --------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 4rem) 1.5rem 5rem;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 30%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 55%),
    var(--clr-bg);
  z-index: 0;
}

/* Animated grid lines */
.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  padding: 0.3rem 1rem;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.4rem;
  color: #fff;
}

.hero__title .highlight {
  color: var(--clr-primary);
  text-shadow: 0 0 28px var(--clr-glow);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--clr-text-muted);
  max-width: 580px;
  margin: 0 auto 2.4rem;
}

.hero__ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------------------------------------------------------
   Buttons
   --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--clr-primary);
  color: #050810;
  box-shadow: 0 0 24px var(--clr-glow);
}

.btn--primary:hover {
  background: #fff;
  color: #050810;
  box-shadow: 0 0 36px rgba(0, 229, 255, 0.6);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--clr-primary);
  border: 1.5px solid var(--clr-primary);
}

.btn--outline:hover {
  background: rgba(0, 229, 255, 0.1);
  color: #fff;
  border-color: #fff;
  transform: translateY(-2px);
}

.btn--accent {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: 0 0 24px var(--clr-glow-accent);
}

.btn--accent:hover {
  background: var(--clr-accent-dim);
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(124, 58, 237, 0.5);
}

/* ---------------------------------------------------------
   Section Common
   --------------------------------------------------------- */
.section {
  padding: 5rem 1.5rem;
}

.section--alt {
  background: var(--clr-bg-card);
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.9rem;
}

.section__subtitle {
  font-size: 1rem;
  color: var(--clr-text-muted);
  max-width: 540px;
  margin: 0 auto;
}

/* ---------------------------------------------------------
   About Section
   --------------------------------------------------------- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about__text p {
  color: var(--clr-text-muted);
  margin-bottom: 1.1rem;
  font-size: 0.97rem;
}

.about__text p strong {
  color: var(--clr-text);
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.stat-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.2rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  border-color: var(--clr-primary);
  box-shadow: 0 0 18px var(--clr-glow);
}

.stat-card__value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1;
  margin-bottom: 0.4rem;
  text-shadow: 0 0 14px var(--clr-glow);
}

.stat-card__label {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@media (max-width: 800px) {
  .about__grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------
   Products Section
   --------------------------------------------------------- */
.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.6rem;
}

.product-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.6rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 24px var(--clr-glow);
}

.product-card:hover::before { opacity: 1; }

.product-card__icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.product-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.6rem;
}

.product-card__desc {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: 1.4rem;
}

.product-card__badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  padding: 0.2rem 0.75rem;
}

/* ---------------------------------------------------------
   Contact Section
   --------------------------------------------------------- */
.contact__wrapper {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.contact__card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--clr-primary);
  text-shadow: 0 0 12px var(--clr-glow);
  margin-bottom: 0.5rem;
}

.contact__email:hover { color: #fff; }

.contact__note {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-top: 0.5rem;
}

.contact__links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

/* ---------------------------------------------------------
   Footer
   --------------------------------------------------------- */
.footer {
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--clr-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
}

.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

.footer__logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: 0.06em;
}

.footer__logo span { color: var(--clr-primary); }

.footer__links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  color: var(--clr-text-muted);
  font-size: 0.85rem;
}

.footer__links a:hover { color: var(--clr-primary); }

.footer__copy { color: var(--clr-text-muted); }

/* ---------------------------------------------------------
   Page Hero (inner pages)
   --------------------------------------------------------- */
.page-hero {
  padding: calc(var(--nav-h) + 3.5rem) 1.5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 50% 0%, rgba(0, 229, 255, 0.06) 0%, transparent 65%),
    var(--clr-bg);
  z-index: 0;
}

.page-hero__content { position: relative; z-index: 1; }

.page-hero__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.7rem;
}

.page-hero__title span { color: var(--clr-primary); }

.page-hero__subtitle {
  font-size: 1rem;
  color: var(--clr-text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* ---------------------------------------------------------
   Prose / Document Sections (Privacy Policy etc.)
   --------------------------------------------------------- */
.prose {
  max-width: 780px;
  margin: 0 auto;
}

.prose h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin: 2.2rem 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--clr-border);
}

.prose h2:first-child { margin-top: 0; }

.prose p {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.9rem;
  line-height: 1.75;
}

.prose ul, .prose ol {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.prose li { margin-bottom: 0.5rem; }

.prose a {
  color: var(--clr-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose strong { color: var(--clr-text); }

.prose .updated {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-bottom: 2rem;
  display: block;
}

/* ---------------------------------------------------------
   Support / Help boxes
   --------------------------------------------------------- */
.help-box {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.8rem;
  margin-bottom: 1.5rem;
}

.help-box__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.help-box__title::before {
  content: '';
  width: 3px;
  height: 1.1em;
  background: var(--clr-primary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--clr-glow);
  flex-shrink: 0;
}

.help-box p {
  font-size: 0.93rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.help-box .email-link {
  font-weight: 600;
  color: var(--clr-primary);
  text-shadow: 0 0 10px var(--clr-glow);
}

/* Back-link */
.back-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.back-links a {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
}

.back-links a:hover { color: var(--clr-primary); }

/* ---------------------------------------------------------
   Divider / Glow line
   --------------------------------------------------------- */
.glow-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-primary), transparent);
  opacity: 0.3;
  margin: 0;
}

/* ---------------------------------------------------------
   Animations
   --------------------------------------------------------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  animation: fadeUp 0.65s ease both;
}

.fade-up--delay-1 { animation-delay: 0.1s; }
.fade-up--delay-2 { animation-delay: 0.22s; }
.fade-up--delay-3 { animation-delay: 0.34s; }
.fade-up--delay-4 { animation-delay: 0.46s; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fade-up { animation: none; }
  *, *::before, *::after { transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------------------------------------------------------
   Utilities
   --------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }