/* ==========================================================================
   Base & Global Styles
   ========================================================================== */
 :root {
   --primary-color: #0b0b0b;
   --secondary-color: #ffffff;
   --tertiary-color: #007BFF;
   --text-primary: #ffffff;
   --text-secondary: #CCD0CF;
   --text-muted: #9BA8AB;
   --border-color: rgba(255, 255, 255, 0.2);
   --bg-overlay: rgba(16, 16, 16, 0.8);
   --floating-card-bg: #1a1a1a;
   --floating-card-border: #333333;
   color-scheme: dark;
 }
 body {
   font-family: 'Inter', sans-serif;
   background-color: var(--primary-color);
   color: var(--text-primary);
 }

/* ==========================================================================
   Animations & Transitions
   ========================================================================== */

/* Keyframes for fading in content */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { 
  from { opacity: 0; transform: translateY(20px); } 
  to { opacity: 1; transform: translateY(0); } 
}
#main-content {
  opacity: 0;
  animation: fadeIn 0.8s 0.2s both;
}

/* Class-based animation for elements that fade in as you scroll to them */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.65, 0, 0.35, 1),
              transform 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}
.reveal-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Service card scroll animation */
.service-card-scroll {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.65, 0, 0.35, 1),
              transform 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}
.service-card-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}
.service-card-scroll:nth-child(1) { transition-delay: 0s; }
.service-card-scroll:nth-child(2) { transition-delay: 0.1s; }
.service-card-scroll:nth-child(3) { transition-delay: 0.2s; }
.service-card-scroll:nth-child(4) { transition-delay: 0.3s; }

/* Helper class to create gradient text */
 .gradient-text {
   color: var(--text-primary);
 }

/* ==========================================================================
   Parallax Zoom Effect for Index Page
   ========================================================================== */

.parallax-container {
  overflow: hidden;
  position: relative;
}

.parallax-element {
  will-change: transform;
  transition: transform 0.1s ease-out;
}

/* Smooth scrolling for the entire page */
html {
  scroll-behavior: smooth;
}

/* Parallax zoom effect */
.zoom-parallax {
  transform-origin: center center;
  transition: transform 0.1s ease-out;
}

/* Enhanced 3D container for parallax */
#threejs-container.parallax-enhanced {
  transform-origin: center center;
  will-change: transform;
}

/* Service card slide-in animation */
#services-sticky-parent {
  transform: scale(1.1);
  opacity: 0;
  transition: transform 0.8s cubic-bezier(0.23, 1, 0.32, 1),
              opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

#services-sticky-parent.visible {
  transform: scale(1);
  opacity: 1;
}

/* ==========================================================================
   Header & Navigation Styles
   ========================================================================== */

#header-nav {
  transition: transform 0.5s ease-in-out;
}

/* --- Interactive Logo --- */
/* 3D effect on hover */
#header-logo { perspective: 1000px; }
#header-logo svg { 
  transition: transform 0.8s ease-in-out; 
  transform-style: preserve-3d; 
  transform-origin: center center; 
}
#header-logo:hover svg { 
  transform: rotateY(180deg) rotateX(15deg); 
}
#header-dispersion { 
  opacity: 0; 
  transition: opacity 0.4s ease; 
}
#header-logo:hover #header-dispersion { 
  opacity: 0.6; 
}
#header-logo:hover #header-prism-left { 
  transform: translateX(-1px) rotateY(-5deg); 
}
#header-logo:hover #header-prism-right { 
  transform: translateX(1px) rotateY(5deg); 
}

/* --- Rainbow Wordmark Animation --- */
/* Keyframes for the shifting rainbow gradient and the glowing pulse effect */
@keyframes rainbow-shift {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
@keyframes glow-pulse {
   0%,100% {
     text-shadow:
       0 0 6px rgba(255, 255, 255, 0.8),
       0 0 12px rgba(0, 123, 255, 0.5),
       0 0 24px rgba(0, 123, 255, 0.45);
   }
   50% {
     text-shadow:
       0 0 10px rgba(255, 255, 255, 1),
       0 0 22px rgba(0, 123, 255, 0.6),
       0 0 40px rgba(0, 123, 255, 0.55);
   }
 }

#header-wordmark { 
  display: inline-flex; 
  gap: 0; 
  line-height: 1; 
}

/* Individual letters of the wordmark */
 .rainbow-letter {
   position: relative;
   display: inline-block;
   font-weight: 700;
   color: var(--secondary-color);
   transition: transform .18s ease, filter .18s ease, color .18s ease;
   will-change: transform, filter;
 }

/* The hover state that triggers the rainbow animation */
.rainbow-letter:hover {
  color: transparent;
  background-image: linear-gradient(
    90deg,
    #ff0033, #ff7300, #fffb00, #48ff00, #00ffd5, #002bff, #7a00ff, #ff00ea, #ff0033
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: rainbow-shift 1.2s linear infinite, glow-pulse 1.2s ease-in-out infinite;
  transform: translateY(-1px) scale(1.06);
  cursor: pointer;
}

/* --- Navigation Links --- */
.nav-link {
  position: relative;
  padding-bottom: 6px; /* Add some space for the line */
  transition: color 0.3s ease;
}

/* The underline that appears on hover */
 .nav-link::after {
   content: '';
   position: absolute;
   bottom: 0;
   left: 0;
   width: 0;
   height: 2px;
   background-color: var(--tertiary-color);
   transition: width 0.3s cubic-bezier(0.65, 0, 0.35, 1);
 }

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

/* ==========================================================================
   Floating Action Buttons
   ========================================================================== */

.whatsapp-fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  transform: translateY(20px) scale(0.9);
}

.whatsapp-fab:not(.hidden) {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.whatsapp-fab:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 40px rgba(37, 211, 102, 0.4);
  background: linear-gradient(135deg, #2EE069 0%, #1A9B8A 100%);
}

.whatsapp-fab svg {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Subtle Grain Effect */
      .grain-texture {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: 
          radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.02) 0%, transparent 50%),
          radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.015) 0%, transparent 50%),
          radial-gradient(circle at 40% 80%, rgba(255, 255, 255, 0.01) 0%, transparent 50%),
          radial-gradient(circle at 60% 40%, rgba(255, 255, 255, 0.018) 0%, transparent 50%),
          radial-gradient(circle at 10% 70%, rgba(255, 255, 255, 0.012) 0%, transparent 50%),
          radial-gradient(circle at 90% 60%, rgba(255, 255, 255, 0.016) 0%, transparent 50%);
        background-size: 200px 200px, 300px 300px, 150px 150px, 250px 250px, 180px 180px, 220px 220px;
        pointer-events: none;
        opacity: 0.4;
      }

      /* Cosmic background */
      .cosmic-background {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: #000;
        overflow: hidden;
      }

      .stars {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: 
          radial-gradient(1px 1px at 20px 30px, #eee, rgba(0,0,0,0)),
          radial-gradient(1px 1px at 40px 70px, #fff, rgba(0,0,0,0)),
          radial-gradient(1px 1px at 50px 160px, #ddd, rgba(0,0,0,0)),
          radial-gradient(1px 1px at 90px 40px, #fff, rgba(0,0,0,0)),
          radial-gradient(2px 2px at 130px 80px, #fff, rgba(0,0,0,0)),
          radial-gradient(2px 2px at 160px 120px, #eee, rgba(0,0,0,0));
        background-repeat: repeat;
        background-size: 200px 200px;
        animation: zoom 15s infinite;
        opacity: 0;
      }

      .stars:nth-child(1) {
        background-position: 50% 50%;
        animation-delay: 0s;
        opacity: 1;
      }

      .stars:nth-child(2) {
        background-position: 20% 60%;
        background-size: 400px 400px;
        animation-delay: 3s;
        animation-duration: 12s;
        opacity: 0.8;
      }

      .stars:nth-child(3) {
        background-position: -20% -30%;
        background-size: 600px 600px;
        animation-delay: 5s;
        animation-duration: 18s;
        opacity: 0.6;
      }

      @keyframes zoom {
        0% {
          opacity: 0;
          transform: scale(0.5);
          animation-timing-function: ease-in;
        }
        85% {
          opacity: 1;
          transform: scale(2.5);
          animation-timing-function: linear;
        }
        100% {
          opacity: 0;
          transform: scale(3);
        }
      }

      /* Footer Full Screen Effect */
      footer {
        position: relative;
        z-index: 1;
      }