:root {
  --navy: #072040;
  --ink: #0d1226;
  --muted: #6b7280;
  --accent: #0b5bd7;
  --bg: #f7f9fc;
  --container: 1100px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-family: inherit;
}

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

/* Containers */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1rem;
}

/* Topbar (base – you also have inline overrides in HTML) */
.topbar {
  background: #000;
  border-bottom: 1px solid #fff;
  font-size: 0.92rem;
}

.topbar .container {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.topbar a {
  color: var(--muted);
  text-decoration: none;
}

/* Header */
.site-header {
  background: #fff;
  border-bottom: 1px solid #e9eef6;
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  box-shadow: 0 1px 0 rgba(12, 19, 39, 0.1);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 2rem;
  position: relative; /* anchor for mobile nav */
}

.brand img {
  display: block;
  height: 50px;
}

/* Navigation – desktop default */
.main-nav {
  position: relative;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-list > li > a,
.nav-link {
  text-decoration: none;
  color: #0b132b;
  font-weight: 300;
  font-size: 20px;
  transition: color 0.2s ease;
}

.nav-list > li > a:hover {
  color: var(--accent);
}

/* Dropdown */
.nav-item.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 0.5rem;
  display: none;
  z-index: 1000;
}

.dropdown-item {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  color: #0b132b;
  text-decoration: none;
  font-size: 15px;
}

.dropdown-item:hover {
  background-color: #f3f6fa;
}

/* Desktop hover behavior only */
@media (min-width: 1021px) {
  .nav-item.dropdown:hover .dropdown-menu {
    display: block;
  }
}

/* ===========================
   MODERN ROUNDED HAMBURGER
   =========================== */

.menu-toggle {
  /* base, hidden by default (shown in media query) */
  display: none;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.fancy-toggle {
  width: 42px;
  height: 36px;
  padding: 8px;
  background: #072040; /* brand navy */
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 3px 10px rgba(0,0,0,0.18);
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.15s ease;
}

.fancy-toggle:hover {
  background: #0b132b;
  box-shadow: 0 5px 15px rgba(0,0,0,0.25);
  transform: translateY(-1px);
}

.fancy-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: #ffffff;
  border-radius: 3px;
  transition: transform .35s ease, opacity .35s ease;
}

/* Transform into "X" when active */
.fancy-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.fancy-toggle.active span:nth-child(2) {
  opacity: 0;
}

.fancy-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Hero (basic) */
.hero {
  padding: 3rem 0;
  background: linear-gradient(180deg, #f9fbff 0, #fff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.badge {
  display: inline-block;
  background: #e9f0ff;
  color: #234;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: 2rem;
  margin: 0.25rem 0 0.5rem;
}

.lead {
  color: var(--muted);
  margin-bottom: 1rem;
}

.hero-img {
  border-radius: 16px;
  border: 1px solid #e6eaf3;
  background: #eef4ff;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
}

/* Cards (about section) */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

/* Footer base (you also have inline footer styles) */
.site-footer {
  background: #06233a;
  color: #cfe6ff;
  padding: 2rem 0;
  margin-top: 2rem;
}

/* ===========================
   RESPONSIVE
   =========================== */

@media (max-width: 1020px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
  }

  /* Show hamburger button on mobile */
  .menu-toggle {
    display: inline-flex;
  }

  /* Hide nav by default on mobile */
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    display: none;
    border-top: 1px solid #e0e6f2;
    padding: 0.75rem 0 1rem;
    z-index: 999;
  }

  /* Show nav when .open is added by JS */
  .main-nav.open {
    display: block;
  }

  /* Stack nav links */
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 1.5rem;
  }

  .nav-list > li {
    width: 100%;
    border-bottom: 1px solid #edf1f7;
  }

  .nav-list > li:last-child {
    border-bottom: none;
  }

  .nav-list a,
  .nav-link {
    display: block;
    width: 100%;
    padding: 0.7rem 0;
    font-size: 16px;
  }

  /* Dropdowns in mobile: controlled by .open on parent li */
  .dropdown-menu {
    position: static;
    display: none;
    background: transparent;
    border: none;
    padding: 0.25rem 0 0.5rem 1rem;
    box-shadow: none;
  }

  .nav-item.dropdown.open .dropdown-menu {
    display: block;
  }

  .dropdown-item {
    padding: 0.3rem 0;
  }
}

@media (max-width: 640px) {
  .cards {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 1.5rem;
  }

  .btn {
    padding: 0.5rem 0.75rem;
  }
}