/* Advance Vision Tech Solutions — main stylesheet */

:root {
  --color-bg: #f5f7fb;
  --color-bg-deep: #0b1530;
  --color-bg-deep-2: #122149;
  --color-surface: #ffffff;
  --color-surface-2: #f0f3fa;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-text-on-dark: #f1f5fb;
  --color-text-on-dark-muted: #b7c2d8;
  --color-primary: #2543b8;
  --color-primary-hover: #1d3796;
  --color-accent: #0ea5a0;
  --color-accent-hover: #0c8c87;
  --color-border: #d8def0;
  --color-border-strong: #b6c1de;
  --color-warning-bg: #fff7e6;
  --color-warning-border: #f5c878;
  --color-warning-text: #875000;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 16px 38px rgba(15, 23, 42, 0.08);
  --shadow-card-hover: 0 24px 48px rgba(15, 23, 42, 0.12);
  --max-content: 1120px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Segoe UI", "Tahoma", "Noto Sans Arabic", "Inter", "Arial", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

html[dir="rtl"] body {
  font-family: "Tahoma", "Noto Sans Arabic", "Segoe UI", "Arial", sans-serif;
}

main { flex: 1 0 auto; }

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover, a:focus-visible { text-decoration: underline; }

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

h1, h2, h3, h4 {
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text);
  line-height: 1.25;
}
h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; }
h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; }
h3 { font-size: 20px; font-weight: 700; }

p { margin: 0 0 var(--space-4) 0; }
ul, ol { margin: 0 0 var(--space-4) 1.4em; padding: 0; }
li { margin-bottom: var(--space-2); }

.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* ── Header / Nav ────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-5);
  max-width: var(--max-content);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 800;
  color: var(--color-text);
}
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
  letter-spacing: 0.5px;
}
.brand__name { line-height: 1.1; }
.brand__name small {
  display: block;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 11px;
  margin-top: 2px;
}

.nav-spacer { flex: 1; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 14px;
}
.nav-links a:hover { color: var(--color-primary); text-decoration: none; }

.lang-toggle {
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.lang-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  background:
    radial-gradient(circle at 18% 24%, rgba(14, 165, 160, 0.20), transparent 60%),
    radial-gradient(circle at 86% 76%, rgba(37, 67, 184, 0.28), transparent 62%),
    linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-deep-2) 100%);
  color: var(--color-text-on-dark);
  padding: var(--space-8) 0;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-7);
  align-items: center;
}
.hero h1 { color: var(--color-text-on-dark); }
.hero p { color: var(--color-text-on-dark-muted); font-size: 17px; }
.hero__eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-5);
}
.hero__visual {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: grid;
  gap: var(--space-3);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}
.hero__visual-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-on-dark);
  font-size: 14px;
}
.hero__visual-row strong { color: #fff; }
.hero__visual-row span { color: var(--color-text-on-dark-muted); font-size: 13px; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}
.btn:hover { text-decoration: none; }
.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  border-color: transparent;
}
.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-accent-hover));
  color: #fff;
}
.btn--secondary {
  background: rgba(255, 255, 255, 0.10);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.30);
}
.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
}
.btn--light {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--light:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ── Sections ────────────────────────────────────────────── */
section { padding: var(--space-8) 0; }
section.section--tight { padding: var(--space-7) 0; }
.section__head {
  text-align: center;
  margin-bottom: var(--space-6);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.section__head p {
  color: var(--color-text-secondary);
  font-size: 17px;
}
.eyebrow {
  display: inline-block;
  padding: 3px 11px;
  border-radius: 999px;
  background: rgba(37, 67, 184, 0.10);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

/* ── Cards / Grids ───────────────────────────────────────── */
.grid {
  display: grid;
  gap: var(--space-5);
}
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  transition: box-shadow 160ms ease, transform 160ms ease;
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.card h3 { margin-bottom: var(--space-2); }
.card p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 0;
}
.card__icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(37, 67, 184, 0.12), rgba(14, 165, 160, 0.18));
  color: var(--color-primary);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
  font-size: 20px;
  font-weight: 900;
}

/* Veylora product section */
.product {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.product__inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-7);
  align-items: center;
}
.product__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3) var(--space-5);
  margin: var(--space-5) 0;
}
.product__features li {
  list-style: none;
  padding-inline-start: var(--space-5);
  position: relative;
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
  font-size: 15px;
}
.product__features li::before {
  content: "✓";
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  color: var(--color-accent);
  font-weight: 900;
}
.product__sidebar {
  background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-deep-2) 100%);
  color: var(--color-text-on-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.product__sidebar h3 { color: #fff; }
.product__sidebar p { color: var(--color-text-on-dark-muted); }
.product__sidebar .stat {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  font-size: 14px;
}
.product__sidebar .stat:first-of-type { border-top: 0; }
.product__sidebar .stat span { color: var(--color-text-on-dark-muted); }
.product__sidebar .stat strong { color: #fff; }

.download-note {
  font-size: 13px;
  color: var(--color-text-on-dark-muted);
  margin-top: var(--space-3);
  margin-bottom: 0;
}

/* ── Integrations callout ────────────────────────────────── */
.integrations {
  background: var(--color-bg);
}
.integrations__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.integration {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.integration h3 { display: flex; align-items: center; gap: var(--space-2); }
.integration ul { margin: var(--space-3) 0 0 1.2em; }
.integration li { color: var(--color-text-secondary); font-size: 14px; }

/* ── Contact / CTA ───────────────────────────────────────── */
.cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
}
.cta .container { text-align: center; }
.cta h2 { color: #fff; }
.cta p { color: rgba(255, 255, 255, 0.86); }
.cta .btn--light { font-weight: 800; }

/* ── Legal pages ─────────────────────────────────────────── */
.legal {
  padding: var(--space-8) 0;
}
.legal .container { max-width: 820px; }
.legal h1 { margin-bottom: var(--space-2); }
.legal .legal__updated {
  color: var(--color-text-muted);
  font-size: 13px;
  margin-bottom: var(--space-6);
}
.legal h2 { margin-top: var(--space-6); }
.legal p, .legal li { color: var(--color-text); }
.legal .notice {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 14px;
  margin: var(--space-5) 0;
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--color-bg-deep);
  color: var(--color-text-on-dark-muted);
  padding: var(--space-7) 0 var(--space-5);
  flex-shrink: 0;
}
.site-footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.site-footer h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: var(--space-2); }
.site-footer a { color: var(--color-text-on-dark-muted); }
.site-footer a:hover { color: #fff; text-decoration: none; }
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  padding-top: var(--space-4);
  text-align: center;
  font-size: 13px;
  color: var(--color-text-on-dark-muted);
}
.site-footer__bottom strong { color: #fff; font-weight: 700; }

/* ── Visibility for language toggle ──────────────────────── */
html[lang="en"] [data-lang-block="ar"] { display: none !important; }
html[lang="ar"] [data-lang-block="en"] { display: none !important; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero__inner,
  .product__inner,
  .integrations__row,
  .grid--3,
  .grid--2,
  .site-footer__top {
    grid-template-columns: 1fr;
  }
  .hero__visual { order: 2; }
  .product__features { grid-template-columns: 1fr; }
  section { padding: var(--space-6) 0; }
  .hero { padding: var(--space-7) 0; }
  .nav-links { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
}