/* ============================================================
   Virtue Technology Group Limited — style.css
   Design: Dark Navy × Tech Blue × White | 2026 Corporate
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --navy:        #070d1a;
  --navy-mid:    #0d1f3c;
  --navy-light:  #132850;
  --blue:        #1a6fff;
  --blue-light:  #4d94ff;
  --blue-glow:   rgba(26, 111, 255, 0.18);
  --white:       #ffffff;
  --off-white:   #f0f4fc;
  --text-main:   #cdd7f0;
  --text-muted:  #7a90b8;
  --border:      rgba(255,255,255,0.08);
  --radius:      10px;
  --radius-lg:   18px;
  --transition:  0.3s ease;
  --max-w:       1160px;
  --font-head:   'Syne', sans-serif;
  --font-body:   'DM Sans', sans-serif;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--navy);
  color: var(--text-main);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--white); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ── Utility ────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 14px 34px;
  border-radius: 6px;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
}
.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 0 28px rgba(26,111,255,0.4);
}
.btn-primary:hover {
  background: var(--blue-light);
  color: var(--white);
  box-shadow: 0 0 42px rgba(26,111,255,0.6);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.3);
}
.btn-ghost:hover {
  border-color: var(--blue-light);
  color: var(--blue-light);
  transform: translateY(-2px);
}

/* ── Section shared ─────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header.light .section-title,
.section-header.light .section-desc { color: var(--white); }
.section-label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue-light);
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-title em {
  font-style: normal;
  color: var(--blue-light);
}
.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ══════════════════════════════════════════════════════════════
   HEADER / NAV
══════════════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  padding: 10px 0;
}
.site-header.scrolled {
  background: rgba(7, 13, 26, 0.95);
  backdrop-filter: blur(14px);
  box-shadow: 0 2px 30px rgba(0,0,0,0.5);
  padding: 6px 0;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  text-decoration: none;
}
.brand-logo:hover { color: var(--white); }
.logo-mark {
  color: var(--blue);
  font-size: 1.4rem;
  line-height: 1;
  filter: drop-shadow(0 0 8px var(--blue));
}
.logo-text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-text span { color: var(--blue-light); }

/* Primary nav */
.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
}
.primary-nav a {
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: 5px;
  transition: all var(--transition);
}
.primary-nav a:hover,
.primary-nav a.active { color: var(--white); }
.primary-nav a.nav-cta {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 0 18px rgba(26,111,255,0.35);
}
.primary-nav a.nav-cta:hover {
  background: var(--blue-light);
  box-shadow: 0 0 28px rgba(26,111,255,0.55);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  width: 36px;
  height: 36px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}
.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); }

/* ══════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
  padding-top: 80px;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,111,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,111,255,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
}
.hero-glow {
  position: absolute;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,111,255,0.2) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -58%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 24px 120px;
}
.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--blue-light);
  border: 1px solid rgba(26,111,255,0.35);
  border-radius: 100px;
  padding: 6px 20px;
  margin-bottom: 36px;
  background: rgba(26,111,255,0.07);
}
.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 52px;
  font-weight: 300;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1.3rem;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ══════════════════════════════════════════════════════════════
   SERVICES
══════════════════════════════════════════════════════════════ */
.section-services {
  padding: 120px 0;
  background: var(--navy);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}
.service-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(26,111,255,0.35);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 40px var(--blue-glow);
}
.service-card:hover::before { opacity: 1; }
.service-icon-wrap {
  font-size: 2.2rem;
  margin-bottom: 20px;
  display: block;
}
.service-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.service-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Service detail section */
.services-detail {
  border-top: 1px solid var(--border);
  padding-top: 72px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px 64px;
}
.detail-block h3 {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--blue);
  display: inline-block;
}
.detail-block p {
  color: var(--text-muted);
  line-height: 1.8;
}

/* ══════════════════════════════════════════════════════════════
   TESTIMONIALS
══════════════════════════════════════════════════════════════ */
.section-testimonials {
  padding: 120px 0;
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.testimonials-intro {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
  color: var(--text-muted);
  line-height: 1.85;
  font-size: 1.02rem;
}
.testimonials-intro p + p { margin-top: 16px; }
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.testimonial-card {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  position: relative;
}
.testimonial-quote {
  font-size: 3rem;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 18px;
  opacity: 0.7;
}
.testimonial-card p {
  color: var(--text-main);
  line-height: 1.8;
  margin-bottom: 28px;
  font-size: 0.97rem;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--white);
  flex-shrink: 0;
}
.testimonial-author strong {
  display: block;
  color: var(--white);
  font-family: var(--font-head);
  font-size: 0.92rem;
}
.testimonial-author span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════════════════════════
   NEWS
══════════════════════════════════════════════════════════════ */
.section-news {
  padding: 120px 0;
  background: var(--navy);
}
.news-grid {
  display: grid;
  gap: 24px;
}
.news-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 760px;
  transition: all var(--transition);
}
.news-card:hover {
  border-color: rgba(26,111,255,0.35);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  transform: translateY(-3px);
}
.news-meta {
  margin-bottom: 12px;
}
.news-meta time {
  font-size: 0.78rem;
  font-family: var(--font-head);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-light);
  background: rgba(26,111,255,0.1);
  padding: 4px 12px;
  border-radius: 100px;
}
.news-card h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  line-height: 1.35;
}
.news-card p {
  color: var(--text-muted);
  line-height: 1.8;
}

/* ══════════════════════════════════════════════════════════════
   CAREERS
══════════════════════════════════════════════════════════════ */
.section-careers {
  padding: 120px 0;
  background: var(--navy-light);
  border-top: 1px solid var(--border);
}
.careers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 880px;
  margin: 0 auto;
}
.career-block {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  transition: all var(--transition);
}
.career-block:hover {
  border-color: rgba(26,111,255,0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
}
.career-icon {
  font-size: 2.4rem;
  margin-bottom: 18px;
}
.career-block h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.career-block p {
  color: var(--text-muted);
  line-height: 1.8;
}

/* ══════════════════════════════════════════════════════════════
   CONTACT
══════════════════════════════════════════════════════════════ */
.section-contact {
  padding: 120px 0;
  background: var(--navy);
  border-top: 1px solid var(--border);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: start;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.contact-item:hover { border-color: rgba(26,111,255,0.3); }
.contact-icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.contact-item h3 {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.contact-item p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.65;
}
.contact-item a {
  color: var(--blue-light);
  word-break: break-all;
}
.contact-item a:hover { color: var(--white); }
.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.contact-map iframe { display: block; }

/* ══════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════ */
.site-footer {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
}
.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 40px;
  align-items: start;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  justify-content: center;
}
.footer-links a {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }
.footer-news {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.85rem;
}
.footer-news strong {
  color: var(--blue-light);
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.footer-news a { color: var(--text-muted); }
.footer-news a:hover { color: var(--white); }
.footer-copy {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding-top: 28px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.83rem;
}

/* ── Scroll to top ──────────────────────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 46px;
  height: 46px;
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 20px rgba(26,111,255,0.45);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  z-index: 999;
}
.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.scroll-top:hover {
  background: var(--blue-light);
  color: var(--white);
  transform: translateY(-3px);
}

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-detail {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-brand { justify-content: center; }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(7, 13, 26, 0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  .primary-nav.open { max-height: 420px; }
  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
  }
  .primary-nav a {
    display: block;
    padding: 12px 16px;
    font-size: 0.9rem;
  }

  /* Sections */
  .section-services,
  .section-testimonials,
  .section-news,
  .section-careers,
  .section-contact { padding: 80px 0; }

  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .careers-grid { grid-template-columns: 1fr; }
  .hero-headline { font-size: clamp(1.8rem, 7vw, 2.6rem); }
  .section-title { font-size: clamp(1.6rem, 5vw, 2.2rem); }
  .services-detail { gap: 32px; }
  .contact-map iframe { height: 260px; }
}

@media (max-width: 480px) {
  .hero-content { padding: 60px 0 100px; }
  .btn { padding: 12px 26px; font-size: 0.82rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .testimonial-card { padding: 28px 22px; }
  .news-card { padding: 28px 24px; }
  .career-block { padding: 28px 22px; }
  .scroll-top { bottom: 20px; right: 20px; }
}