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

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

body {
  margin: 0;
  overflow-x: hidden;
}

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

::selection {
  background: #1B4332;
  color: #fefdf8;
}

/* ===== NAVIGATION ===== */
#site-header {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

#site-header.scrolled {
  background: rgba(254, 253, 248, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(27, 67, 50, 0.08);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: #1B4332;
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

#site-header.scrolled .nav-link {
  color: #1B4332;
}

/* ===== MOBILE MENU ===== */
#mobile-menu {
  transition: opacity 0.4s ease, pointer-events 0.4s ease;
}

#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-link {
  position: relative;
}

/* ===== HERO ANIMATIONS ===== */
.hero-anim {
  opacity: 0;
  transform: translateY(24px);
  animation: heroIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-anim:nth-child(1) { animation-delay: 0.1s; }
.hero-anim:nth-child(2) { animation-delay: 0.25s; }
.hero-anim:nth-child(3) { animation-delay: 0.4s; }
.hero-anim:nth-child(4) { animation-delay: 0.55s; }
.hero-anim:nth-child(5) { animation-delay: 0.7s; }

@keyframes heroIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== SCROLL REVEAL ===== */
.reveal-up,
.reveal-left {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-up {
  transform: translateY(0);
}

.reveal-left {
  transform: translateX(0);
}

.reveal-up.revealed,
.reveal-left.revealed {
  opacity: 1;
  transform: translateY(0) translateX(0);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(32px);
  }

  .reveal-left {
    opacity: 0;
    transform: translateX(-24px);
  }

  .reveal-right {
    opacity: 0;
    transform: translateX(24px);
  }

  .reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== CARD HOVER ===== */
.card-hover {
  transform: translateY(0);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.5s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
}

/* ===== FOCUS STYLES ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid #1B4332;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== UTILITY ===== */
@media (max-width: 767px) {
  #site-header {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
}