/* ===== CSS VARIABLES ===== */
:root {
  --color-primary: #00529b;
  --color-primary-dark: #003d73;
  --color-secondary: #e3a731;
  --color-accent: #00a1d6;
  --color-dark: #1a1a2e;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #ffffff;
  --color-bg-light: #f5f7fa;
  --color-bg-footer: #1a1a2e;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --max-width: 1200px;
  --header-height: 90px;
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--color-text); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* TOP BAR */
.top-bar { background: var(--color-primary-dark); color: var(--color-white); font-size: 0.8rem; padding: 6px 0; }
.top-bar .container { display: flex; justify-content: flex-end; gap: 24px; align-items: center; }
.top-bar a { color: rgba(255,255,255,0.85); font-size: 0.78rem; letter-spacing: 0.3px; }
.top-bar a:hover { color: var(--color-white); }

/* HEADER */
.header { background: var(--color-white); box-shadow: 0 2px 20px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; height: var(--header-height); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; }
.logo img { height: 40px; width: auto; }

/* NAV */
.main-nav { display: flex; align-items: center; gap: 0; }
.main-nav > li { position: relative; }
.main-nav > li > a { display: block; padding: 10px 16px; font-family: var(--font-heading); font-size: 0.85rem; font-weight: 600; color: var(--color-dark); text-transform: uppercase; letter-spacing: 0.5px; transition: color var(--transition); }
.main-nav > li > a:hover, .main-nav > li:hover > a { color: var(--color-primary); }
.main-nav > li > a.active { color: var(--color-primary); border-bottom: 3px solid var(--color-primary); }
.dropdown { position: absolute; top: 100%; left: 0; background: var(--color-white); min-width: 240px; box-shadow: 0 10px 40px rgba(0,0,0,0.12); border-top: 3px solid var(--color-primary); opacity: 0; visibility: hidden; transform: translateY(8px); transition: all 0.25s ease; z-index: 100; }
.main-nav > li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown li a { display: block; padding: 10px 20px; font-size: 0.82rem; color: var(--color-text); border-bottom: 1px solid rgba(0,0,0,0.04); }
.dropdown li a:hover { background: var(--color-bg-light); color: var(--color-primary); padding-left: 24px; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 26px; height: 2.5px; background: var(--color-dark); border-radius: 2px; transition: var(--transition); }

/* BUTTONS */
.btn { display: inline-block; padding: 12px 32px; background: var(--color-primary); color: var(--color-white); font-family: var(--font-heading); font-size: 0.85rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; border-radius: 4px; transition: all var(--transition); border: 2px solid var(--color-primary); }
.btn:hover { background: transparent; color: var(--color-primary); }
.btn-outline { background: transparent; color: var(--color-white); border-color: var(--color-white); }
.btn-outline:hover { background: var(--color-white); color: var(--color-primary); }

/* FOOTER */
.footer { background: var(--color-bg-footer); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer h4 { font-family: var(--font-heading); color: var(--color-white); font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
.footer a { color: rgba(255,255,255,0.65); font-size: 0.9rem; display: block; margin-bottom: 8px; }
.footer a:hover { color: var(--color-white); }
.footer .contact-info p { font-size: 0.9rem; margin-bottom: 8px; line-height: 1.5; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: 0.8rem; }
.social-links { display: flex; gap: 16px; margin-top: 16px; }
.social-links a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; transition: background var(--transition); }
.social-links a:hover { background: var(--color-primary); }

/* ANIMATIONS */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE (shared) */
@media (max-width: 992px) { .footer-grid { grid-template-columns: 1fr; } }
@media (max-width: 768px) {
  :root { --header-height: 70px; }
  .top-bar { display: none; }
  .hamburger { display: flex; }
  .main-nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--color-white); flex-direction: column; box-shadow: 0 10px 30px rgba(0,0,0,0.1); padding: 20px; }
  .main-nav.active { display: flex; }
  .main-nav > li > a { padding: 12px 0; }
  .dropdown { position: static; box-shadow: none; border-top: none; opacity: 1; visibility: visible; transform: none; padding-left: 20px; }
}