/* ==========================================================
   ENHANCEMENTS
   Glassmorphism, micro-interactions, page transitions,
   cookie consent, and other visual upgrades
   ========================================================== */

/* -------------------------------------------------------
   Glassmorphism effects
   ------------------------------------------------------- */
.glass {
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.3);
}

[data-theme="dark"] .glass {
  background: rgba(15, 26, 20, .65);
  border-color: rgba(255,255,255,.08);
}

/* Cards get subtle glass on hover */
.card:hover,
.guide-card:hover,
.requirement-card:hover {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}


/* -------------------------------------------------------
   Button ripple effect
   ------------------------------------------------------- */
.btn {
  position: relative;
  overflow: hidden;
}
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.3);
  pointer-events: none;
  animation: ripple 0.6s ease-out forwards;
}


/* -------------------------------------------------------
   Animated link underlines
   ------------------------------------------------------- */
.animated-link {
  position: relative;
  text-decoration: none;
}
.animated-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.3s var(--ease-out);
}
.animated-link:hover::after {
  width: 100%;
}


/* -------------------------------------------------------
   Input focus enhancements
   ------------------------------------------------------- */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  transform: translateY(-1px);
}


/* -------------------------------------------------------
   Page transition overlay
   ------------------------------------------------------- */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--color-primary-dark);
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}
.page-transition-overlay.entering {
  animation: pageTransitionIn 0.4s ease-in-out forwards;
}
.page-transition-overlay.leaving {
  animation: pageTransitionOut 0.4s ease-in-out forwards;
}

@keyframes pageTransitionIn {
  0% { transform: scaleY(0); transform-origin: bottom; }
  100% { transform: scaleY(1); transform-origin: bottom; }
}
@keyframes pageTransitionOut {
  0% { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: top; }
}


/* -------------------------------------------------------
   Cookie consent banner
   ------------------------------------------------------- */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9998;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-lg) 0;
  transform: translateY(100%);
  transition: transform 0.5s var(--ease-out);
  box-shadow: 0 -4px 20px rgba(0,0,0,.08);
}
.cookie-consent.visible {
  transform: translateY(0);
}
.cookie-consent-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}
.cookie-consent-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}
.cookie-consent-text a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.cookie-consent-actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}
.cookie-consent .btn-accept {
  padding: .5rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semi);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease-out);
}
.cookie-consent .btn-accept:hover {
  background: var(--color-primary-light);
}
.cookie-consent .btn-decline {
  padding: .5rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-medium);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
}
.cookie-consent .btn-decline:hover {
  background: var(--color-surface-warm);
  border-color: var(--color-text-light);
}


/* -------------------------------------------------------
   Lazy load blur-up images
   ------------------------------------------------------- */
.lazy-image {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-cool);
}
.lazy-image img {
  transition: opacity 0.5s ease-out, filter 0.5s ease-out;
}
.lazy-image img[data-src] {
  filter: blur(20px);
  opacity: 0.6;
}
.lazy-image img.loaded {
  filter: blur(0);
  opacity: 1;
}


/* -------------------------------------------------------
   Enhanced mobile menu
   ------------------------------------------------------- */
@media (max-width: 768px) {
  .nav.nav-open {
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
  }

  [data-theme="dark"] .nav.nav-open {
    background: rgba(15, 26, 20, .98);
  }

  .nav.nav-open .nav-link {
    animation: slideInUp 0.4s ease-out both;
  }
  .nav.nav-open .nav-link:nth-child(1) { animation-delay: 0.05s; }
  .nav.nav-open .nav-link:nth-child(2) { animation-delay: 0.1s; }
  .nav.nav-open .nav-link:nth-child(3) { animation-delay: 0.15s; }
  .nav.nav-open .nav-link:nth-child(4) { animation-delay: 0.2s; }
  .nav.nav-open .nav-link:nth-child(5) { animation-delay: 0.25s; }

  /* Cookie consent stacks on mobile */
  .cookie-consent-inner {
    flex-direction: column;
    text-align: center;
  }
}


/* -------------------------------------------------------
   Hero particles canvas
   ------------------------------------------------------- */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-particles canvas {
  width: 100%;
  height: 100%;
}


/* -------------------------------------------------------
   Loading spinner
   ------------------------------------------------------- */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(var(--color-primary-rgb), .15);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 40px; height: 40px; border-width: 4px; }


/* -------------------------------------------------------
   Smooth scrollbar (Webkit)
   ------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-light);
}

[data-theme="dark"]::-webkit-scrollbar-track {
  background: var(--color-bg);
}
[data-theme="dark"]::-webkit-scrollbar-thumb {
  background: var(--color-border);
}