/* ===== Base & Typography ===== */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

::selection {
  background-color: rgba(43, 107, 115, 0.15);
  color: #1e4349;
}

/* ===== Navbar ===== */
#navbar {
  background: rgba(246, 247, 248, 0);
  transition: background 0.5s ease, box-shadow 0.5s ease, backdrop-filter 0.5s ease;
}

#navbar.scrolled {
  background: rgba(246, 247, 248, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: #2B6B73;
  transition: width 0.3s ease;
}

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

/* ===== Hero ===== */
.hero-content {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.hero-image {
  transform: scale(1);
  transition: transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero-image-wrap:hover .hero-image {
  transform: scale(1.03);
}

.hero-eyebrow {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s;
}

.hero-headline {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s ease 0.3s, transform 0.7s ease 0.3s;
}

.hero-subtitle {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s ease 0.4s, transform 0.7s ease 0.4s;
}

.hero-actions {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s ease 0.5s, transform 0.7s ease 0.5s;
}

/* ===== Section Eyebrows ===== */
.section-eyebrow {
  opacity: 1;
}

.section-title {
  opacity: 1;
}

/* ===== Process Cards ===== */
.process-card {
  opacity: 1;
}

/* ===== Gallery ===== */
.gallery-item {
  opacity: 1;
}

/* ===== Reveal Animations ===== */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 1;
  transform: translateY(0) translateX(0);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left {
  transition-delay: 0ms;
}

.reveal-right {
  transition-delay: 0ms;
}

/* These transitions are for the JS-enhanced progressive enhancement below */
.reveal-up.is-hidden,
.reveal-left.is-hidden,
.reveal-right.is-hidden {
  opacity: 0;
}

.reveal-up.is-hidden {
  transform: translateY(32px);
}

.reveal-left.is-hidden {
  transform: translateX(-32px);
}

.reveal-right.is-hidden {
  transform: translateX(32px);
}

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

#mobile-menu.closed {
  opacity: 0;
  pointer-events: none;
}

#mobile-menu.open .mobile-link {
  animation: mobileLinkIn 0.4s ease forwards;
  opacity: 0;
}

#mobile-menu.open .mobile-link:nth-child(1) { animation-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { animation-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { animation-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { animation-delay: 0.25s; }

@keyframes mobileLinkIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Menu Lines Animation ===== */
.menu-line {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

#menu-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

#menu-toggle.active .menu-line:nth-child(2) {
  opacity: 0;
}

#menu-toggle.active .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
  width: 1.5rem;
}

/* ===== Decorative Patterns ===== */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(43, 107, 115, 0.2), transparent);
}

/* ===== Button Focus States ===== */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #2B6B73;
  outline-offset: 2px;
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal-up.is-hidden,
  .reveal-left.is-hidden,
  .reveal-right.is-hidden {
    opacity: 1;
    transform: none;
  }

  .hero-image {
    transition: none;
  }

  .gallery-item img {
    transition: none;
  }

  .process-card {
    transition: none;
  }

  #navbar {
    transition: none;
  }
}

/* ===== Tablet ===== */
@media (max-width: 767px) {
  .hero-headline {
    font-size: 2.75rem !important;
  }

  .section-title {
    font-size: 2.25rem;
  }
}

/* ===== Small phones ===== */
@media (max-width: 360px) {
  .hero-headline {
    font-size: 2.25rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions a {
    width: 100%;
    justify-content: center;
  }
}