/* ============================================
   Helen Donut — Custom Styles
   ============================================ */

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

body {
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: #0d9488;
  color: #f5f0eb;
}

/* Navbar transition */
#navbar.scrolled {
  background: rgba(2, 6, 23, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

#navbar.scrolled .nav-logo-text {
  color: #f5f0eb;
}

#navbar.scrolled .nav-link {
  color: rgba(245, 240, 235, 0.75);
}

#navbar.scrolled .nav-link:hover {
  color: #f5f0eb;
}

/* Hero animations */
.hero-subtitle {
  animation: fadeUp 0.8s ease forwards;
  animation-delay: 0.3s;
  opacity: 0;
}

.hero-headline {
  animation: fadeUp 0.9s ease forwards;
  animation-delay: 0.5s;
  opacity: 0;
}

.hero-desc {
  animation: fadeUp 0.9s ease forwards;
  animation-delay: 0.7s;
  opacity: 0;
}

.hero-cta {
  animation: fadeUp 0.9s ease forwards;
  animation-delay: 0.9s;
  opacity: 0;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal animations */
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-card {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

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

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

/* Initial hidden states for scroll reveals (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(40px);
  }
  .reveal-left {
    opacity: 0;
    transform: translateX(-40px);
  }
  .reveal-right {
    opacity: 0;
    transform: translateX(40px);
  }
  .reveal-card {
    opacity: 0;
    transform: translateY(30px);
  }
}

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

.menu-line:nth-child(1) {
  transform-origin: center;
}

.menu-line:nth-child(3) {
  transform-origin: center;
}

#menu-toggle.active .menu-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
  width: 1.25rem;
}

/* Mobile link animations */
.mobile-link {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
  opacity: 1;
  transform: translateY(0);
}

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

/* Smooth image loading */
img {
  background-color: #e2e8f0;
}

/* Focus visible */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #0d9488;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f5f0eb;
}
::-webkit-scrollbar-thumb {
  background: #94a3b8;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

/* Tablet and up adjustments */
@media (min-width: 768px) {
  .hero-headline {
    font-size: clamp(3.5rem, 8vw, 5.5rem);
  }
}

/* Large screens */
@media (min-width: 1024px) {
  .hero-headline {
    font-size: clamp(4rem, 9vw, 6.5rem);
  }
}

/* Ultra large screens */
@media (min-width: 1280px) {
  .hero-headline {
    font-size: clamp(4.5rem, 10vw, 8rem);
  }
}

/* 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;
  }
}