/* ── Accessibility ────────────────────────────────────────────── */
.skip-link {
  position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
  background: var(--blue); color: #fff; padding: 12px 24px;
  border-radius: 0 0 8px 8px; font-weight: 600; font-size: 0.95rem;
  z-index: 10000; text-decoration: none; transition: top 0.2s;
}
.skip-link:focus { top: 0; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
*:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

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

:root {
  --blue:       #0066cc;
  --blue-dark:  #004d99;
  --blue-light: #e8f2ff;
  --teal:       #00a8a8;
  --teal-dark:  #008080;
  --dark:       #0f1b2d;
  --dark-mid:   #1a2940;
  --gray-900:   #1a1a2e;
  --gray-700:   #495057;
  --gray-500:   #868e96;
  --gray-200:   #e9ecef;
  --gray-100:   #f8f9fa;
  --white:      #ffffff;
  --radius:     12px;
  --radius-sm:  8px;
  --shadow:     0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg:  0 12px 48px rgba(0,0,0,0.12);
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-900);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ── Navigation ────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  background: transparent; transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled { background: rgba(15,27,45,0.97); box-shadow: 0 2px 20px rgba(0,0,0,0.15); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.nav-logo img { height: 44px; }

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: rgba(255,255,255,0.85); font-weight: 500; font-size: 0.92rem; transition: color var(--transition); }
.nav-links a:hover { color: #fff; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 10px 6px; min-height: 44px; min-width: 44px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.btn {
  display: inline-block; padding: 10px 24px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.92rem; transition: all var(--transition); cursor: pointer;
  border: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-mid) 50%, #0a2a4a 100%);
  padding: 160px 0 100px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -20%; width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(0,102,204,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,168,168,0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero h1 { font-size: 3rem; font-weight: 800; color: #fff; line-height: 1.15; letter-spacing: -1px; }
.hero h1 span { color: var(--teal); }
.hero-sub { color: rgba(255,255,255,0.75); font-size: 1.15rem; margin: 20px 0 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.hero-stat {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); padding: 24px; text-align: center;
}
.hero-stat .num { font-size: 2.2rem; font-weight: 800; color: var(--teal); }
.hero-stat .label { color: rgba(255,255,255,0.6); font-size: 0.85rem; margin-top: 4px; }

/* ── Section base ──────────────────────────────────────────────── */
section { padding: 80px 0; }
.section-light { background: var(--white); }
.section-gray { background: var(--gray-100); }
.section-dark { background: var(--dark); color: #fff; }

.section-header { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-header h2 { font-size: 2rem; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 12px; }
.section-header p { color: var(--gray-500); font-size: 1.05rem; }
.section-dark .section-header p { color: rgba(255,255,255,0.6); }

/* ── Services ──────────────────────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card {
  background: var(--white); border-radius: var(--radius); padding: 32px;
  box-shadow: var(--shadow); border: 1px solid var(--gray-200);
  transition: all var(--transition); position: relative; overflow: hidden;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}
.service-icon {
  width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center;
  justify-content: center; font-size: 1.5rem; margin-bottom: 16px;
  background: var(--blue-light); color: var(--blue);
}
.service-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { color: var(--gray-700); font-size: 0.92rem; line-height: 1.65; }

/* ── Core Solutions (big 3) ────────────────────────────────────── */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.solution-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.solution-img {
  height: 200px; background-size: cover; background-position: center;
  position: relative;
}
.solution-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15,27,45,0.7));
}
.solution-body { padding: 28px; }
.solution-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
.solution-body p { color: var(--gray-700); font-size: 0.92rem; margin-bottom: 16px; }
.solution-body a { color: var(--blue); font-weight: 600; font-size: 0.92rem; }
.solution-body a:hover { text-decoration: underline; }

/* ── Featured / As Seen On ─────────────────────────────────────── */
.media-logos {
  display: flex; align-items: center; justify-content: center;
  gap: 48px; flex-wrap: wrap; opacity: 0.5; filter: grayscale(100%);
}
.media-logos span { font-size: 1.5rem; font-weight: 800; color: var(--gray-700); letter-spacing: -0.5px; }

/* ── Testimonials ──────────────────────────────────────────────── */
.testimonials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.testimonial-card {
  background: var(--white); border-radius: var(--radius); padding: 32px;
  box-shadow: var(--shadow); border: 1px solid var(--gray-200);
}
.testimonial-card blockquote {
  font-size: 1rem; line-height: 1.7; color: var(--gray-700);
  font-style: italic; margin-bottom: 20px; position: relative; padding-left: 20px;
  border-left: 3px solid var(--teal);
}
.testimonial-author { font-weight: 700; font-size: 0.9rem; }
.testimonial-role { color: var(--gray-500); font-size: 0.82rem; }

/* ── Why Choose Us ─────────────────────────────────────────────── */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-card { text-align: center; padding: 24px 16px; }
.why-icon {
  width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; background: rgba(0,168,168,0.15); color: var(--teal);
}
.section-dark .why-card h3 { color: #fff; font-size: 1.05rem; margin-bottom: 8px; }
.section-dark .why-card p { color: rgba(255,255,255,0.6); font-size: 0.88rem; }

/* ── CTA Banner ────────────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, var(--blue) 0%, var(--teal-dark) 100%);
  padding: 60px 0; text-align: center;
}
.cta-banner h2 { font-size: 2rem; color: #fff; font-weight: 800; margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 28px; }
.cta-banner .btn { background: #fff; color: var(--blue); font-weight: 700; }
.cta-banner .btn:hover { background: var(--gray-100); transform: translateY(-1px); }
.cta-phone { color: #fff; font-size: 1.4rem; font-weight: 700; margin-top: 16px; display: block; }
.cta-phone:hover { text-decoration: underline; }

/* ── Contact ───────────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info h3 { font-size: 1.3rem; margin-bottom: 16px; }
.contact-info p { color: var(--gray-700); margin-bottom: 12px; line-height: 1.7; }
.contact-detail { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; }
.contact-detail .icon { font-size: 1.2rem; margin-top: 2px; }
.contact-detail a { color: var(--blue); }
.contact-detail a:hover { text-decoration: underline; }

.contact-form { background: var(--white); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); border: 1px solid var(--gray-200); }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; color: var(--gray-700); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm); font-size: 0.95rem; font-family: inherit;
  transition: border var(--transition); background: var(--white);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--blue); outline: none;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Footer ────────────────────────────────────────────────────── */
.footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand p { margin-top: 12px; font-size: 0.88rem; line-height: 1.6; }
.footer-links h4 { color: #fff; font-size: 0.9rem; margin-bottom: 14px; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: rgba(255,255,255,0.6); font-size: 0.88rem; transition: color var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.82rem; }
.footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: underline; }

/* ── Responsive ────────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero h1 { font-size: 2.2rem; }
  .hero-actions { justify-content: center; }
  .hero-stats { max-width: 400px; margin: 0 auto; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section-header h2 { font-size: 1.7rem; }
}

/* Mobile */
@media (max-width: 640px) {
  /* Nav */
  .nav-links {
    display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: rgba(15,27,45,0.98); flex-direction: column;
    padding: 24px; gap: 8px; border-top: 1px solid rgba(255,255,255,0.1);
    overflow-y: auto; -webkit-overflow-scrolling: touch;
  }
  .nav-links.active { display: flex; }
  .nav-toggle { display: block; }
  .nav-links a {
    font-size: 1.05rem; padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-links .btn-outline { margin-top: 8px; text-align: center; padding: 14px; }

  /* Hero */
  .hero { padding: 110px 0 48px; }
  .hero h1 { font-size: 1.7rem; letter-spacing: -0.5px; }
  .hero-sub { font-size: 0.98rem; margin: 16px 0 24px; }
  .hero-actions { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 32px; }
  .hero-stat { padding: 16px 12px; }
  .hero-stat .num { font-size: 1.6rem; }
  .hero-stat .label { font-size: 0.75rem; }

  /* Sections */
  section { padding: 48px 0; }
  .container { padding: 0 16px; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 1.45rem; }
  .section-header p { font-size: 0.95rem; }

  /* Services */
  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { padding: 24px 20px; }
  .service-card h3 { font-size: 1.05rem; }

  /* Solutions */
  .solutions-grid { max-width: 100%; }
  .solution-img { height: 160px; }
  .solution-body { padding: 20px; }
  .solution-body h3 { font-size: 1.1rem; }

  /* Why */
  .why-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .why-card { padding: 16px 12px; }
  .why-icon { width: 52px; height: 52px; font-size: 1.3rem; }
  .section-dark .why-card h3 { font-size: 0.95rem; }
  .section-dark .why-card p { font-size: 0.82rem; }

  /* Testimonials */
  .testimonial-card { padding: 24px 20px; }
  .testimonial-card blockquote { font-size: 0.92rem; padding-left: 16px; }

  /* CTA */
  .cta-banner { padding: 40px 0; }
  .cta-banner h2 { font-size: 1.5rem; }
  .cta-banner p { font-size: 0.95rem; margin-bottom: 20px; }
  .cta-banner .btn { width: 100%; text-align: center; display: block; }
  .cta-phone { font-size: 1.2rem; margin-top: 12px; }

  /* Contact */
  .contact-info { order: 2; }
  .contact-form { order: 1; padding: 24px 18px; }
  .form-row { grid-template-columns: 1fr; }
  .form-group input, .form-group textarea, .form-group select {
    padding: 14px; font-size: 16px; /* prevents iOS zoom on focus */
  }

  /* Media logos */
  .media-logos { gap: 20px; }
  .media-logos span { font-size: 1rem; }

  /* Footer */
  .footer { padding: 40px 0 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand p { font-size: 0.85rem; }
  .footer-bottom { font-size: 0.78rem; }
}

/* Small phones */
@media (max-width: 380px) {
  .hero h1 { font-size: 1.45rem; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 8px; }
  .hero-stat .num { font-size: 1.4rem; }
  .why-grid { grid-template-columns: 1fr; }
  .container { padding: 0 12px; }
}

/* Touch target minimums */
@media (pointer: coarse) {
  .nav-links a { min-height: 44px; display: flex; align-items: center; }
  .btn { min-height: 44px; }
  .contact-detail a { min-height: 44px; display: inline-flex; align-items: center; }
}