/* ── 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 {
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ── Scroll Reveal ──────────────────────────────── */
@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:nth-child(2) { transition-delay: 0.1s; }
  .reveal:nth-child(3) { transition-delay: 0.2s; }
  .reveal:nth-child(4) { transition-delay: 0.3s; }
}

/* ── Hero Animation ─────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .hero-tag {
    animation: slideUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    animation-delay: 0.3s;
  }

  @keyframes slideUp {
    from {
      opacity: 0;
      transform: translateY(100%);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ── Navbar ─────────────────────────────────────── */
#navbar {
  background: transparent;
}

#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

#navbar.scrolled .nav-link {
  color: #64748b;
}

#navbar.scrolled .nav-link:hover {
  color: #0d9488;
}

#navbar.scrolled .font-serif {
  color: #1e293b;
}

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

#mobile-menu.open .mobile-link {
  animation: fadeIn 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 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 fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Hamburger ──────────────────────────────────── */
.menu-line {
  display: block;
}

.menu-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(2px, 2px);
}

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

.menu-toggle.active .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(2px, -2px);
  width: 1.25rem;
}

/* ── Form ───────────────────────────────────────── */
input:focus,
textarea:focus {
  border-color: #0d9488 !important;
}

input::placeholder,
textarea::placeholder {
  color: #cbd5e1;
}

/* ── Selection ──────────────────────────────────── */
::selection {
  background: #ccfbf1;
  color: #134e4a;
}

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

::-webkit-scrollbar-track {
  background: #f8fafc;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}