/* ═══════════════════════════════════════════════════════════
   Whizz Automation and Controls — Single-page site stylesheet
   ═══════════════════════════════════════════════════════════ */

:root {
  --blue: #1d5fd3;
  --blue-dark: #12459f;
  --blue-light: #4d8bff;
  --navy: #0a1830;
  --navy-2: #0e2244;
  --ink: #16233a;
  --slate: #51617a;
  --line: #e3e9f2;
  --bg: #f7f9fc;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(10, 24, 48, 0.08);
  --shadow-lg: 0 24px 60px rgba(10, 24, 48, 0.16);
  --font-head: 'Sora', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.container { width: min(1180px, 92%); margin: 0 auto; }

h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; }

.grad-text {
  background: linear-gradient(100deg, var(--blue) 20%, var(--blue-light) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ─── Reveal animations ─── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ═══════════ NAVBAR ═══════════ */
.navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s, border-color 0.3s;
}
.navbar.scrolled { border-color: var(--line); box-shadow: 0 6px 24px rgba(10,24,48,0.07); }

.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 46px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-family: var(--font-head); font-size: 1.15rem; letter-spacing: 0.06em; color: var(--navy); }
.brand-text small { font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--slate); }

.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  padding: 6px 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--blue);
  transition: width 0.3s;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  background: linear-gradient(100deg, var(--blue), var(--blue-dark));
  color: #fff !important;
  padding: 10px 22px !important;
  border-radius: 50px;
  box-shadow: 0 6px 18px rgba(29, 95, 211, 0.35);
  transition: transform 0.25s, box-shadow 0.25s;
}
.nav-cta::after { display: none; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(29,95,211,0.45); }

.hamburger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 26px; height: 3px; background: var(--navy); margin: 5px 0; border-radius: 3px; transition: 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ═══════════ HERO ═══════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 55%, #123063 100%);
  color: #eaf1fb;
  overflow: hidden;
  padding: 130px 0 90px;
}
.hero-bg { position: absolute; inset: 0; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(77, 139, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 139, 255, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 40%, transparent 100%);
}
.glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.45; }
.glow-1 { width: 480px; height: 480px; background: #1d5fd3; top: -120px; right: -80px; animation: drift 9s ease-in-out infinite alternate; }
.glow-2 { width: 380px; height: 380px; background: #0e7cd8; bottom: -140px; left: -100px; animation: drift 11s ease-in-out infinite alternate-reverse; }
@keyframes drift { from { transform: translate(0,0); } to { transform: translate(40px, 30px); } }

.hero-inner { position: relative; max-width: 850px; }
.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #9fc3ff;
  background: rgba(77, 139, 255, 0.12);
  border: 1px solid rgba(77, 139, 255, 0.35);
  padding: 8px 18px;
  border-radius: 50px;
  margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(2.3rem, 5.2vw, 3.9rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}
.hero-sub { font-size: 1.13rem; color: #b9c9e2; max-width: 640px; margin-bottom: 36px; }

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }

.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 15px 34px;
  border-radius: 50px;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
}
.btn-primary {
  background: linear-gradient(100deg, var(--blue), var(--blue-light));
  color: #fff;
  box-shadow: 0 10px 30px rgba(29, 95, 211, 0.45);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 38px rgba(29,95,211,0.55); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,0.35); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.1); transform: translateY(-3px); }
.btn-light { background: #fff; color: var(--blue-dark); box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.btn-light:hover { transform: translateY(-3px); }

.hero-badges { display: flex; gap: 26px; flex-wrap: wrap; }
.badge-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: #b9c9e2; }
.badge-item span { color: #57d98f; font-weight: 700; }

.scroll-hint { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); }
.mouse { display: block; width: 26px; height: 42px; border: 2px solid rgba(255,255,255,0.4); border-radius: 14px; position: relative; }
.wheel { position: absolute; top: 7px; left: 50%; width: 4px; height: 8px; margin-left: -2px; background: #9fc3ff; border-radius: 2px; animation: wheel 1.8s infinite; }
@keyframes wheel { 0% { opacity: 1; transform: translateY(0); } 100% { opacity: 0; transform: translateY(14px); } }

/* ═══════════ STATS ═══════════ */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 46px 0; }
.stat { text-align: center; }
.stat-num { font-family: var(--font-head); font-size: 2.6rem; font-weight: 800; color: var(--blue); }
.stat-label { font-size: 0.92rem; color: var(--slate); font-weight: 500; }

/* ═══════════ SECTIONS ═══════════ */
.section { padding: 100px 0; }
.section-dark { background: var(--bg); }

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.section-title { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 800; color: var(--navy); margin-bottom: 26px; letter-spacing: -0.01em; }
.section-lead { max-width: 780px; color: var(--slate); margin-bottom: 46px; font-size: 1.06rem; }

/* ─── About ─── */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 60px; align-items: start; }
.about-text p { color: var(--slate); margin-bottom: 18px; }
.about-text p strong { color: var(--ink); }

.about-points { margin-top: 34px; display: grid; gap: 22px; }
.point { display: flex; gap: 18px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.point-icon { font-size: 1.7rem; line-height: 1; }
.point h4 { font-size: 1.05rem; color: var(--navy); margin-bottom: 6px; }
.point p { font-size: 0.95rem; margin: 0 !important; }

.about-card {
  background: linear-gradient(170deg, var(--navy), var(--navy-2));
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: 100px;
}
.about-logo { background: #fff; border-radius: 12px; padding: 14px 20px; margin-bottom: 26px; }
.fact-list { list-style: none; }
.fact-list li {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255,255,255,0.09);
  font-size: 0.9rem;
}
.fact-list li:last-child { border-bottom: 0; }
.fact-list span { color: #8fa5c8; }
.fact-list strong { color: #fff; text-align: right; font-weight: 600; }

/* ─── Expertise cards ─── */
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 20px; }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(29,95,211,0.35); }
.card-icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  font-size: 1.6rem;
  background: linear-gradient(135deg, rgba(29,95,211,0.1), rgba(77,139,255,0.16));
  border-radius: 14px;
  margin-bottom: 18px;
}
.card h3 { font-size: 1.06rem; color: var(--navy); margin-bottom: 10px; }
.card p { font-size: 0.9rem; color: var(--slate); }

/* ─── Services ─── */
.service-list { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 20px; }
.service {
  display: flex; gap: 20px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.service:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.service-num {
  font-family: var(--font-head);
  font-size: 1.5rem; font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--blue);
  line-height: 1;
  padding-top: 4px;
}
.service h3 { font-size: 1.08rem; color: var(--navy); margin-bottom: 8px; }
.service p { font-size: 0.92rem; color: var(--slate); }

.tech-block { margin-top: 70px; }
.tech-title { font-size: 1.35rem; color: var(--navy); margin-bottom: 28px; }
.tech-rows { display: grid; gap: 18px; }
.tech-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 24px;
}
.tech-label { font-family: var(--font-head); font-weight: 700; font-size: 0.92rem; color: var(--navy); }

.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 50px;
  padding: 7px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  transition: border-color 0.25s, color 0.25s, transform 0.25s;
}
.chip:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }
.chip-lg { padding: 10px 22px; font-size: 0.92rem; }

/* ─── Industries ─── */
.industry-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; margin-top: 20px; }
.industry {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 16px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}
.industry:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.industry-icon { font-size: 2.1rem; margin-bottom: 14px; }
.industry h3 { font-size: 0.9rem; color: var(--navy); font-weight: 600; }

/* ─── Projects ─── */
.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 20px; }
.project {
  position: relative;
  background: linear-gradient(165deg, var(--navy), var(--navy-2));
  color: #dbe6f7;
  border-radius: 20px;
  padding: 36px 32px;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.project::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(77,139,255,0.35), transparent 70%);
  border-radius: 50%;
}
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.project-tag {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: #9fc3ff;
  background: rgba(77,139,255,0.14);
  border: 1px solid rgba(77,139,255,0.3);
  padding: 5px 14px; border-radius: 50px;
  margin-bottom: 18px;
}
.project h3 { color: #fff; font-size: 1.2rem; margin-bottom: 12px; }
.project p { font-size: 0.93rem; color: #a9bcd9; }

/* ─── Academics / gallery ─── */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 40px; }
.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.gallery-item.wide { grid-column: span 3; }
.gallery-item img { width: 100%; height: 320px; object-fit: cover; transition: transform 0.5s; }
.gallery-item.wide img { height: 480px; object-position: top; }
.gallery-item:hover img { transform: scale(1.04); }
.gallery-item figcaption { padding: 14px 18px; font-size: 0.88rem; color: var(--slate); }

.academic-offer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.offer {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--navy);
  text-align: center;
}

/* ─── Clients ─── */
.client-groups { display: grid; gap: 28px; margin-top: 20px; }
.client-group {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
}
.client-group h3 { font-size: 1.05rem; color: var(--navy); margin-bottom: 16px; }

.quality-strip {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  background: linear-gradient(100deg, var(--navy), var(--navy-2));
  border-radius: 20px;
  padding: 34px 38px;
}
.quality-item { display: flex; flex-direction: column; gap: 4px; }
.quality-item strong { font-family: var(--font-head); color: #fff; font-size: 1.08rem; }
.quality-item span { color: #9db2d3; font-size: 0.88rem; }

/* ─── CTA banner ─── */
.cta-banner {
  background: linear-gradient(110deg, var(--blue-dark), var(--blue) 55%, var(--blue-light));
  color: #fff;
  padding: 80px 0;
  text-align: center;
}
.cta-inner h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.cta-inner p { color: #dbe8ff; margin-bottom: 30px; font-size: 1.05rem; }

/* ─── Contact ─── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; margin-top: 20px; }
.contact-cards { display: grid; gap: 18px; align-content: start; }
.contact-card {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 26px;
  transition: transform 0.3s, box-shadow 0.3s;
}
a.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.contact-icon {
  width: 50px; height: 50px; flex-shrink: 0;
  display: grid; place-items: center;
  font-size: 1.3rem;
  background: linear-gradient(135deg, rgba(29,95,211,0.1), rgba(77,139,255,0.16));
  border-radius: 12px;
}
.contact-card h4 { font-size: 1rem; color: var(--navy); margin-bottom: 4px; }
.contact-card p { font-size: 0.93rem; color: var(--slate); }

.map-wrap {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  min-height: 420px;
}
.map-wrap iframe { width: 100%; height: 100%; min-height: 420px; border: 0; }

/* ─── Footer ─── */
.footer { background: var(--navy); color: #a9bcd9; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding: 70px 0 50px;
}
.footer-logo { background: #fff; border-radius: 10px; padding: 10px 14px; width: 190px; margin-bottom: 20px; }
.footer-brand p { font-size: 0.92rem; margin-bottom: 12px; }
.footer-reg { font-size: 0.8rem !important; color: #7288ab; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 18px; letter-spacing: 0.04em; }
.footer-col a { display: block; font-size: 0.9rem; padding: 5px 0; color: #a9bcd9; transition: color 0.25s; }
.footer-col a:hover { color: #fff; }
.footer-addr { font-size: 0.9rem; padding-top: 5px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 22px 0; font-size: 0.85rem; }

/* ─── Back to top ─── */
.back-top {
  position: fixed;
  right: 26px; bottom: 26px;
  width: 50px; height: 50px;
  border: 0; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(29,95,211,0.4);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 90;
}
.back-top.show { opacity: 1; transform: none; pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .academic-offer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-card { position: static; max-width: 520px; }
}

@media (max-width: 820px) {
  .hamburger { display: block; }
  .nav-links {
    position: fixed;
    top: 74px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 6vw 26px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(10,24,48,0.12);
    transform: translateY(-130%);
    transition: transform 0.35s ease;
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-links a:last-child { border-bottom: 0; margin-top: 14px; text-align: center; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .service-list, .project-grid, .contact-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .gallery-item.wide { grid-column: span 1; }
  .gallery-item.wide img { height: 320px; }
  .quality-strip { grid-template-columns: 1fr; gap: 22px; }
  .tech-row { grid-template-columns: 1fr; gap: 10px; }
  .section { padding: 70px 0; }
}

@media (max-width: 520px) {
  .card-grid, .industry-grid, .academic-offer-grid, .footer-grid, .stats-grid { grid-template-columns: 1fr; }
  .brand-text small { display: none; }
  .hero { padding-top: 110px; }
  .hero-actions .btn { width: 100%; text-align: center; }
}