:root {
  --navy-900: #0B2C4A;
  --navy-800: #0F3B66;
  --navy-700: #12507F;
  --blue-500: #1E6FA8;
  --gray-50: #F7F9FC;
  --gray-100: #F3F6FA;
  --gray-200: #E8ECF2;
  --gray-400: #A9B4C2;
  --gray-600: #5B6B80;
  --gray-800: #1E2A38;
  --amber-400: #F2A93B;
  --whatsapp: #25D366;
  --whatsapp-dark: #1EBE59;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 44, 74, 0.08);
  --font: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Motion: deceleration (ease-out) for things entering/responding, linear only for constant-rate progress */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 380ms;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--gray-800);
  background: #fff;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy-900);
  color: #fff;
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 12px; top: 12px; }

h1, h2, h3 { font-weight: 800; line-height: 1.15; margin: 0 0 16px; color: var(--navy-900); }
h1 { font-size: clamp(2rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; margin-bottom: 10px; }
p { margin: 0 0 12px; color: var(--gray-600); }

a { color: inherit; text-decoration: none; }

ul { margin: 0; padding: 0; list-style: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font);
  font-weight: 700;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  min-height: 44px;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              background var(--duration-base) var(--ease-standard);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.97); }
.btn-large { padding: 15px 26px; font-size: 1rem; }
.btn-label-short { display: none; }
.btn-small { padding: 9px 16px; font-size: 0.85rem; min-height: 40px; }
.btn-full { width: 100%; }

/* Navy text on WhatsApp green: 7.2:1 contrast (white-on-green is only ~2:1 and fails WCAG AA) */
.btn-whatsapp {
  background: var(--whatsapp);
  color: var(--navy-900);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp:hover { background: var(--whatsapp-dark); }

.btn-ghost {
  background: transparent;
  color: var(--navy-800);
  border: 2px solid var(--gray-200);
}
.btn-ghost:hover { border-color: var(--navy-800); }

.btn:focus-visible,
.main-nav a:focus-visible,
.brand:focus-visible,
.nav-toggle:focus-visible,
.modal-close:focus-visible,
#wa-form input:focus-visible {
  outline: 3px solid var(--amber-400);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 8px 24px rgba(15, 44, 74, 0);
  transition: box-shadow var(--duration-slow) var(--ease-standard);
}
.site-header.is-scrolled { box-shadow: 0 8px 24px rgba(15, 44, 74, 0.08); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-text {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.brand-text strong { font-weight: 800; color: var(--navy-800); }

.main-nav { display: flex; gap: 28px; }
.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--gray-800);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard);
}
.main-nav a:hover { color: var(--navy-800); border-color: var(--amber-400); }

.header-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy-900);
  margin: 0 auto;
  transition: transform var(--duration-base) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
  padding: 64px 0 40px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy-700);
  background: var(--gray-100);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero-lead { font-size: 1.1rem; max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 26px 0; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-600);
}
.hero-trust li::before { content: "✓ "; color: var(--whatsapp); font-weight: 800; }
.hero-art { border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); }

/* Trust strip */
.strip { background: var(--navy-900); padding: 22px 0; }
.strip-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 36px;
  justify-content: center;
}
.strip-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
}

/* Sections */
.section { padding: 84px 0; }
.section-alt { background: var(--gray-50); }
.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy-700);
  margin-bottom: 10px;
}
.section-eyebrow-light { color: var(--amber-400); }
.section-lead { max-width: 65ch; font-size: 1.05rem; }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 42px;
}
.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.card ul { margin-top: 14px; }
.card ul li {
  font-size: 0.92rem;
  color: var(--gray-600);
  padding-left: 20px;
  position: relative;
  margin-bottom: 8px;
}
.card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber-400);
}

/* Mid-page banner */
.banner-section {
  background: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-900) 100%);
  padding: 64px 0;
}
.banner-inner {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 40px;
  align-items: center;
}
.banner-copy h2 { color: #fff; }
.banner-copy p { color: var(--gray-400); max-width: 60ch; }
.banner-art { max-width: 220px; margin: 0 auto; }

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 42px;
}
.gallery-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  padding: 0;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  text-align: left;
  font-family: var(--font);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
}
.gallery-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.gallery-item:focus-visible { outline: 3px solid var(--amber-400); outline-offset: 2px; }
.gallery-media { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--gray-100); }
.gallery-media img { width: 100%; height: 100%; display: block; object-fit: cover; }
.gallery-body { padding: 20px 22px 24px; }
.gallery-title {
  display: block;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--navy-900);
  margin-bottom: 8px;
}
.gallery-desc {
  display: block;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--gray-600);
}

/* Certification */
.certification-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: center;
}
.certification-badge {
  width: 100%;
  aspect-ratio: 1;
  background: var(--navy-900);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Coverage */
.coverage-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.coverage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
  margin-top: 24px;
}
.coverage-list li {
  font-weight: 600;
  color: var(--navy-900);
  padding: 10px 16px;
  background: var(--gray-100);
  border-radius: 10px;
}

/* Reasons */
.reasons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 42px;
}
.reason {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
}
.reason p { font-size: 0.92rem; margin: 0; }

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
}
.cta-copy h2 { color: #fff; }
.cta-copy p { color: var(--gray-400); }
.contact-details { display: flex; flex-wrap: wrap; gap: 18px 32px; margin: 24px 0 30px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
  font-size: 0.98rem;
}

/* Footer */
.site-footer { background: #081F35; padding: 56px 0 0; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand { max-width: 420px; }
.footer-brand-row { display: flex; align-items: center; gap: 10px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text strong { color: var(--amber-400); }
.footer-brand p { color: var(--gray-400); font-size: 0.9rem; margin-top: 12px; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: var(--gray-400); font-size: 0.9rem; font-weight: 600; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  padding: 20px 24px;
  text-align: center;
  color: var(--gray-400);
  font-size: 0.82rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 44, 74, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  transition: background var(--duration-slow) var(--ease-standard);
}
.modal-overlay[hidden] { display: none; }
.modal-overlay.is-open { background: rgba(11, 44, 74, 0.55); }
.modal {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 440px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  opacity: 0;
  transform: translateY(10px) scale(0.97);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}
.modal-overlay.is-open .modal { opacity: 1; transform: translateY(0) scale(1); }
.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: 50%;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  color: var(--gray-600);
  transition: background .15s ease;
}
.modal-close:hover { background: var(--gray-100); }
.modal h3 { margin-bottom: 6px; padding-right: 36px; }
.modal-sub { font-size: 0.92rem; margin-bottom: 22px; }

/* Lightbox (gallery modal) */
.lightbox-modal { max-width: 480px; }
.lightbox-art {
  width: 100%;
  aspect-ratio: 300 / 260;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 18px;
}
.lightbox-art svg, .lightbox-art img { width: 100%; height: 100%; display: block; object-fit: cover; }
.lightbox-modal h3 { padding-right: 0; }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--gray-100);
  color: var(--navy-900);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast) var(--ease-standard);
}
.lightbox-nav:hover { background: var(--gray-200); }
.lightbox-prev { left: -14px; }
.lightbox-next { right: -14px; }
@media (max-width: 560px) {
  .lightbox-prev { left: 4px; }
  .lightbox-next { right: 4px; }
}
#wa-form { display: flex; flex-direction: column; gap: 16px; }
#wa-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--navy-900);
}
#wa-form input {
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  outline: none;
  transition: border-color .15s ease;
}
#wa-form input:focus { border-color: var(--navy-700); }
#wa-form input.is-invalid { border-color: #C0392B; }
#wa-form input.is-invalid:focus { border-color: #C0392B; }
.field-error {
  color: #C0392B;
  font-size: 0.8rem;
  font-weight: 600;
  display: none;
}
.field-error.is-visible { display: block; }

/* Responsive */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 420px; margin: 0 auto; }
  .certification-grid { grid-template-columns: 1fr; text-align: center; }
  .certification-badge { max-width: 160px; margin: 0 auto; }
  .coverage-grid { grid-template-columns: 1fr; }
  .coverage-art { max-width: 320px; margin: 0 auto; }
  .cards { grid-template-columns: 1fr; }
  .reasons-grid { grid-template-columns: repeat(2, 1fr); }
  .banner-inner { grid-template-columns: 1fr; text-align: center; }
  .banner-art { order: -1; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--gray-200);
    max-height: 0;
    overflow: hidden;
    transition: max-height .25s ease;
  }
  .main-nav.open { max-height: 320px; }
  .main-nav a { padding: 16px 24px; border-bottom: 1px solid var(--gray-100); }
  .nav-toggle { display: flex; }
  .header-actions .btn-small span { display: none; }
}

@media (max-width: 760px) {
  .reasons-grid { grid-template-columns: 1fr; }
  .coverage-list { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 480px) {
  .header-actions .btn-small { padding: 10px; }
  .hero { padding: 40px 0 30px; }
  .section { padding: 56px 0; }
  .btn-large { padding: 14px 18px; }
  .btn-label-full { display: none; }
  .btn-label-short { display: inline; }
  .btn { white-space: normal; text-align: center; line-height: 1.25; }
  .modal-overlay { padding: 12px; }
  .modal { padding: 24px 20px; }
  .gallery-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .btn:hover, .card:hover { transform: none; }
}