/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ─── Hero Gradient ─── */
.hero-gradient {
  background: linear-gradient(135deg, #042a22 0%, #064e3b 25%, #065f46 50%, #047857 75%, #059669 100%);
}

/* ─── Navbar ─── */
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

/* ─── Navbar scrolled state ─── */
header.scrolled {
  background: rgba(254, 253, 248, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(4, 42, 34, 0.08);
}
header.scrolled .nav-link { color: #064e3b; }
header.scrolled .nav-link::after { background: #065f46; }

/* ─── Reveal Animations ─── */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.hidden-reveal {
  opacity: 0;
  transform: translateY(32px);
}

.reveal-tag {
  display: inline-block;
}
.reveal-tag.hidden-reveal {
  opacity: 0;
  transform: translateY(16px);
}

.reveal-heading {
  display: block;
}
.reveal-heading.hidden-reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal-body {
  display: block;
}
.reveal-body.hidden-reveal {
  opacity: 0;
  transform: translateY(20px);
}

.reveal-card {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-card.hidden-reveal {
  opacity: 0;
  transform: translateY(24px);
}

/* ─── Hero Animations ─── */
.hero-subtitle {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}
.hero-headline {
  opacity: 0;
  transform: translateY(32px);
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}
.hero-description {
  opacity: 0;
  transform: translateY(24px);
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.7s forwards;
}
.hero-buttons {
  opacity: 0;
  transform: translateY(24px);
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards;
}

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

/* ─── Buttons ─── */
.btn-primary {
  box-shadow: 0 4px 20px rgba(4, 42, 34, 0.15);
}
.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(4, 42, 34, 0.25);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); }

.btn-submit {
  box-shadow: 0 4px 20px rgba(4, 42, 34, 0.15);
}
.btn-submit:hover {
  box-shadow: 0 8px 32px rgba(4, 42, 34, 0.25);
  transform: translateY(-2px);
}
.btn-submit:active { transform: translateY(0); }

/* ─── Card hover ─── */
.card {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.card.hidden-reveal {
  opacity: 0;
  transform: translateY(32px);
}

/* ─── Mobile Menu ─── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}
#mobile-menu.closed {
  opacity: 0;
  pointer-events: none;
}
.mobile-nav-link {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s ease;
}
#mobile-menu.open .mobile-nav-link {
  opacity: 1;
  transform: translateY(0);
}
#mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.25s; }

/* ─── Menu Toggle ─── */
.menu-line {
  transition: transform 0.3s ease, opacity 0.3s ease, width 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) {
  width: 100%;
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #fdf9ed; }
::-webkit-scrollbar-thumb { background: #065f46; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #047857; }

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal.hidden-reveal,
  .reveal-tag.hidden-reveal,
  .reveal-heading.hidden-reveal,
  .reveal-body.hidden-reveal,
  .reveal-card.hidden-reveal,
  .card.hidden-reveal {
    opacity: 1;
    transform: none;
  }
}

/* ─── Focus Styles ─── */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid #065f46;
  outline-offset: 2px;
  border-radius: 4px;
}