/* Base Styles & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --amber-400: #fbbf24;
  --amber-600: #d97706;
  --amber-50: #fffbeb;
  --neutral-900: #171717;
  --neutral-700: #404040;
  --neutral-600: #525252;
  --neutral-200: #e5e5e5;
  --neutral-50: #fafafa;
  --black: #000000;
  --white: #ffffff;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--neutral-900);
  background-color: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Layout Utilities */
.min-h-screen { min-height: 100vh; }
.h-screen { height: 100vh; }
.w-full { width: 100%; }
.h-full { height: 100%; }

.max-w-5xl { max-width: 64rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-7xl { max-width: 80rem; }
.max-w-3xl { max-width: 48rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }
.p-12 { padding: 3rem; }
.p-16 { padding: 4rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }

.pt-6 { padding-top: 1.5rem; }
.pt-8 { padding-top: 2rem; }
.pb-4 { padding-bottom: 1rem; }
.pb-8 { padding-bottom: 2rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mt-20 { margin-top: 5rem; }
.mt-24 { margin-top: 6rem; }

.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.mb-24 { margin-bottom: 6rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.flex-shrink-0 { flex-shrink: 0; }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }

.space-y-2 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.5rem; }
.space-y-3 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.75rem; }
.space-y-4 > :not([hidden]) ~ :not([hidden]) { margin-top: 1rem; }
.space-y-6 > :not([hidden]) ~ :not([hidden]) { margin-top: 1.5rem; }

/* Positioning & Display */
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.z-10 { z-index: 10; }
.overflow-hidden { overflow: hidden; }

/* Colors & Backgrounds */
.bg-white { background-color: var(--white); }
.bg-black { background-color: var(--black); }
.bg-amber-50 { background-color: var(--amber-50); }
.bg-neutral-900 { background-color: var(--neutral-900); }
.bg-neutral-50 { background-color: var(--neutral-50); }
.bg-transparent { background-color: transparent; }

.bg-amber-400 { background-color: var(--amber-400); }
.bg-white-5 { background-color: rgba(255,255,255,0.05); }
.bg-white-10 { background-color: rgba(255,255,255,0.1); }
.bg-white-70 { background-color: rgba(255,255,255,0.7); }

.bg-gradient-to-b {
  background: linear-gradient(to bottom, rgba(0,0,0,0.6), rgba(0,0,0,0.4), rgba(0,0,0,0.7));
}

.text-white { color: var(--white); }
.text-black { color: var(--black); }
.text-amber-400 { color: var(--amber-400); }
.text-amber-600 { color: var(--amber-600); }
.text-neutral-900 { color: var(--neutral-900); }
.text-neutral-700 { color: var(--neutral-700); }
.text-neutral-600 { color: var(--neutral-600); }

.text-white-60 { color: rgba(255,255,255,0.6); }
.text-white-70 { color: rgba(255,255,255,0.7); }
.text-white-80 { color: rgba(255,255,255,0.8); }
.text-white-90 { color: rgba(255,255,255,0.9); }

/* Typography */
.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.leading-tight { line-height: 1.25; }
.leading-relaxed { line-height: 1.625; }
.uppercase { text-transform: uppercase; }

/* Borders */
.border { border-width: 1px; border-style: solid; }
.border-2 { border-width: 2px; border-style: solid; }
.border-b { border-bottom-width: 1px; border-bottom-style: solid; }
.border-t { border-top-width: 1px; border-top-style: solid; }
.border-l-4 { border-left-width: 4px; border-left-style: solid; }

.border-white { border-color: var(--white); }
.border-amber-400 { border-color: var(--amber-400); }
.border-neutral-200 { border-color: var(--neutral-200); }
.border-white-10 { border-color: rgba(255,255,255,0.1); }
.border-white-20 { border-color: rgba(255,255,255,0.2); }
.border-white-50 { border-color: rgba(255,255,255,0.5); }
.border-white-60 { border-color: rgba(255,255,255,0.6); }

.rounded-full { border-radius: 9999px; }
.rounded-none { border-radius: 0; }

/* Images & Icons */
.object-cover { object-fit: cover; }
.w-5 { width: 1.25rem; } .h-5 { height: 1.25rem; }
.w-6 { width: 1.5rem; }   .h-6 { height: 1.5rem; }
.w-8 { width: 2rem; }     .h-8 { height: 2rem; }
.w-10 { width: 2.5rem; }  .h-10 { height: 2.5rem; }
.w-12 { width: 3rem; }    .h-12 { height: 3rem; }
.w-24 { width: 6rem; }    .h-1 { height: 0.25rem; }
.h-64 { height: 16rem; }
.h-500 { height: 500px; }
.w-1-5 { width: 0.375rem; }
.mt-0-5 { margin-top: 0.125rem; }

/* Effects & State */
.transition-all { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-transform { transition-property: transform; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.duration-300 { transition-duration: 300ms; }

.hover-bg-white:hover { background-color: var(--white); }
.hover-text-black:hover { color: var(--black); }
.hover-bg-white-95:hover { background-color: rgba(255,255,255,0.95); }
.hover-bg-white-20:hover { background-color: rgba(255,255,255,0.2); }

.group:hover .group-hover-translate-x-1 { transform: translateX(0.25rem); }

.bottom-8 { bottom: 2rem; }
.left-1\/2 { left: 50%; }
.-translate-x-1\/2 { transform: translateX(-50%); }

/* Animations */
@keyframes bounce {
  0%, 100% { transform: translateY(-25%); animation-timing-function: cubic-bezier(0.8,0,1,1); }
  50% { transform: none; animation-timing-function: cubic-bezier(0,0,0.2,1); }
}
.animate-bounce { animation: bounce 1s infinite; }

/* Responsive Overrides (md: min-width 768px, lg: min-width 1024px) */
@media (min-width: 640px) {
  .sm-w-auto { width: auto; }
  .sm-flex-row { flex-direction: row; }
}

@media (min-width: 768px) {
  .md-text-2xl { font-size: 1.5rem; }
  .md-text-5xl { font-size: 3rem; }
  .md-text-6xl { font-size: 3.75rem; }
  .md-text-7xl { font-size: 4.5rem; }
  .md-py-20 { padding-top: 5rem; padding-bottom: 5rem; }
  .md-px-12 { padding-left: 3rem; padding-right: 3rem; }
  .md--mx-12 { margin-left: -3rem; margin-right: -3rem; }
  
  .md-grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md-grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md-gap-6 { gap: 1.5rem; }

  .md-border-b-0 { border-bottom-width: 0; }
  .md-border-r { border-right-width: 1px; border-right-style: solid; border-color: rgba(255,255,255,0.1); }
  .md-pb-0 { padding-bottom: 0; }
}

@media (min-width: 1024px) {
  .lg-text-8xl { font-size: 6rem; line-height: 1; }
  .lg-grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .lg-grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
}

/* =========================================
   Special Effects & Scroll Animations
   ========================================= */

/* Core Reveal Classes injected by JS */
.reveal-element {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

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

/* Image Hover Zoom Special Effect (Premium feel) */
.overflow-hidden img {
  transition: transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.overflow-hidden:hover img {
  transform: scale(1.08); /* Slow, cinematic zoom */
}

/* Icon Micro-interactions */
i[data-lucide] {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.3s;
}

.text-center.space-y-3:hover i[data-lucide],
.bg-amber-50:hover i[data-lucide] {
  transform: scale(1.3) translateY(-6px);
  color: var(--amber-600);
}

/* Card Hover States & Floating Geometry */
.box-bordered, .box-outline {
  transition: border-color 0.4s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.4s ease;
  border-radius: 8px;
}

.box-bordered {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
}

.box-bordered:hover {
  border-color: rgba(251, 191, 36, 0.4);
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(251, 191, 36, 0.05); 
}

.box-outline {
  border: 1px solid var(--neutral-200);
  background: var(--white);
}

.box-outline:hover {
  border-color: var(--amber-400);
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.06);
}

/* Step items numbering glow */
.step-item:hover .w-10 {
  box-shadow: 0 0 15px rgba(251, 191, 36, 0.6);
  transform: scale(1.1);
  transition: all 0.3s ease;
}

/* =========================================
   Structural Aliases & Advanced Effects
   ========================================= */

/* Hero Utilities */
.bg-gradient-hero { background: linear-gradient(to bottom, rgba(0,0,0,0.6), rgba(0,0,0,0.2), rgba(0,0,0,0.8)); }
.text-hero { font-size: clamp(3rem, 6vw, 5.5rem); }
.flex-center-wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; }
.mouse-icon { width: 1.5rem; height: 2.5rem; border: 2px solid rgba(255,255,255,0.5); border-radius: 9999px; display: flex; justify-content: center; }
.mouse-wheel { width: 0.375rem; height: 0.5rem; background-color: rgba(255,255,255,0.7); border-radius: 9999px; margin-top: 0.5rem; animation: bounce 1.5s infinite; }

/* Dynamic Expand Divider Effect */
.divider-amber { 
  height: 0.25rem; 
  background-color: var(--amber-400); 
  margin: 0 auto; 
  width: 0px; 
  transition: width 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.is-revealed.divider-amber,
.is-revealed .divider-amber {
  width: 6rem;
}

/* Grids & Layout */
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 3rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.grid-5 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.5rem; }
.bleed-bg { width: 100vw; position: relative; margin-left: -50vw; left: 50%; }

/* Icons & Components */
.metric-icon { width: 2.5rem; height: 2.5rem; margin: 0 auto; color: var(--amber-400); }
.metric-icon-small { width: 3rem; height: 3rem; margin: 0 auto; color: var(--amber-600); }
.flex-with-icon { display: flex; gap: 1rem; align-items: flex-start; }
.icon-amber { width: 1.5rem; height: 1.5rem; color: var(--amber-400); flex-shrink: 0; margin-top: 0.2rem; }

/* Buttons & Links */
.btn { border: none; font-family: inherit; font-size: 1rem; font-weight: 500; }
.btn-white { background-color: var(--white); color: var(--black); padding: 1rem 2.2rem; border-radius: 4px; display: flex; align-items: center; gap: 0.75rem; transition: all 0.4s; cursor: pointer; }
.btn-white:hover { background-color: rgba(255,255,255,0.9); transform: translateY(-3px); box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2); }
.btn-outline { background-color: transparent; border: 2px solid var(--white); color: var(--white); padding: 1rem 2.2rem; border-radius: 4px; display: flex; align-items: center; transition: all 0.4s; cursor: pointer; }
.btn-outline:hover { background-color: var(--white); color: var(--black); transform: translateY(-3px); }
.btn-outline-muted { background-color: transparent; border: 2px solid rgba(255,255,255,0.6); color: var(--white); padding: 1rem 2.2rem; border-radius: 4px; display: flex; align-items: center; gap: 0.75rem; transition: all 0.4s; cursor: pointer; }
.btn-outline-muted:hover { border-color: var(--white); transform: translateY(-3px); }

.btn-outline-full { width: 100%; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.2); color: var(--white); padding: 1rem 1.5rem; border-radius: 6px; display: flex; align-items: center; gap: 0.75rem; transition: all 0.3s; cursor: pointer; }
.btn-outline-full:hover { background: rgba(255,255,255,0.15); transform: translateX(5px); border-color: var(--amber-400); }

/* Helpers */
.step-item { display: flex; gap: 1rem; align-items: flex-start; }
.step-num { width: 3rem; height: 3rem; border-radius: 9999px; background-color: var(--amber-400); color: var(--black); display: flex; align-items: center; justify-content: center; font-weight: 600; flex-shrink: 0; font-size: 1.2rem; }
.border-l-amber { border-left: 4px solid var(--amber-400); box-shadow: 0 4px 15px rgba(0,0,0,0.02); }
.flex-1 { flex: 1; text-align: left; }
.icon-group-hover { width: 1.25rem; height: 1.25rem; transition: transform 0.4s ease; }
.group:hover .icon-group-hover { transform: translateX(0.4rem); }