/* ========== BASE & RESET ========== */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
}

/* ========== NAVBAR ========== */
#navbar {
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

#navbar.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(11, 29, 58, 0.08);
}

.nav-link {
  position: relative;
}

/* ========== HERO SCROLL INDICATOR ========== */
@keyframes scrollLine {
  0% { transform: translateY(-100%); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateY(100%); opacity: 0; }
}

.animate-scroll-line {
  animation: scrollLine 1.5s ease-in-out infinite;
}

/* ========== SCROLL REVEAL ========== */
.scroll-reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  .scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== MOBILE MENU ========== */
#mobile-menu {
  animation: slideDown 0.25s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== CUSTOM SELECT ARROW ========== */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7A9E' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ========== SELECTION ========== */
::selection {
  background: rgba(212, 160, 23, 0.2);
  color: #0B1D3A;
}

/* ========== FOCUS ========== */
:focus-visible {
  outline: 2px solid #D4A017;
  outline-offset: 2px;
}

/* ========== RESPONSIVE TWEAKS ========== */
@media (max-width: 640px) {
  html {
    scroll-padding-top: 72px;
  }
}