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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

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

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

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

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
}

/* ── Navbar ── */
#navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(10, 37, 64, 0.06);
}

#navbar.scrolled {
  box-shadow: 0 1px 20px rgba(10, 37, 64, 0.06);
}

/* ── Mobile Menu ── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

#mobile-menu.open #menu-line-1 {
  transform: rotate(45deg) translate(3px, 3px);
}

#mobile-menu.open #menu-line-2 {
  opacity: 0;
}

#mobile-menu.open #menu-line-3 {
  transform: rotate(-45deg) translate(3px, -3px);
  width: 24px;
  margin-left: 0;
}

/* ── Input Focus ── */
input:focus, textarea:focus {
  border-color: #7ED4C1 !important;
}

/* ── Selection ── */
::selection {
  background: #D8F3EC;
  color: #0A2540;
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #F0FAF7;
}

::-webkit-scrollbar-thumb {
  background: #B8E8D8;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #7ED4C1;
}