/* ── Base & Utilities ── */
html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }

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

/* ── Navbar scroll state ── */
#navbar.scrolled {
  background: rgba(26, 10, 46, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(148, 63, 217, 0.15);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ── Nav links underline animation ── */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #d4a017, #f59e0b);
  transition: width 0.3s ease;
  border-radius: 1px;
}

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

/* ── Mobile menu transitions ── */
#mobile-menu {
  animation: slideDown 0.3s ease forwards;
}

#mobile-menu.hidden {
  animation: slideUp 0.25s ease forwards;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* ── Mobile link hover ── */
.mobile-link {
  position: relative;
  padding-left: 0;
}

.mobile-link::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: #d4a017;
  border-radius: 2px;
  transition: height 0.2s ease;
}

.mobile-link:hover::before {
  height: 60%;
}

/* ── Input focus animations ── */
input:focus,
textarea:focus {
  background: rgba(26, 10, 46, 0.8);
}

/* ── Custom scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #1a0a2e;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #581c87, #7e22ce);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #7e22ce, #9333ea);
}

/* ── Selection color ── */
::selection {
  background: rgba(212, 160, 23, 0.3);
  color: #f3e8ff;
}