/* Custom variables for theme */
:root {
  --primary-blue: #0ea5e9; /* Tailwind sky-500 */
  --dark-bg: #0f172a;      /* Tailwind slate-900 */
  --light-bg: #f8fafc;     /* Tailwind slate-50 */
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--light-bg);
  color: #334155;
  overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--dark-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--primary-blue);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #0284c7;
}

/* Hero Background Animation */
.hero-bg {
  background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?auto=format&fit=crop&q=80&w=1920&ixlib=rb-4.0.3') center/cover no-repeat fixed;
  animation: bg-pulse 20s infinite alternate;
}

@keyframes bg-pulse {
  0% { background-position: center top; }
  100% { background-position: center bottom; }
}

/* Micro-animations and Effects */
.glass-nav {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.hover-lift {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Image zoom effect on hover */
.img-zoom-container {
  overflow: hidden;
}

.img-zoom {
  transition: transform 0.5s ease;
}

.hover-lift:hover .img-zoom {
  transform: scale(1.1);
}

/* Scroll Animation Classes */
.fade-in-section {
  opacity: 0;
  transform: translateY(20px);
  visibility: hidden;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  will-change: opacity, visibility;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: none;
  visibility: visible;
}

/* Loading overlay */
#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--dark-bg);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255,255,255,0.1);
  border-top-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Back to top button */
#back-to-top {
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

#back-to-top.show {
  opacity: 1;
  visibility: visible;
}

/* Floating WhatsApp */
.float-wa {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 20px;
  left: 20px;
  background-color: #25d366;
  color: #FFF;
  border-radius: 50px;
  text-align: center;
  font-size: 30px;
  box-shadow: 2px 2px 3px #999;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.float-wa:hover {
  transform: scale(1.1);
}