:root {
  --background: oklch(0.13 0.02 260);
  --foreground: oklch(0.98 0 0);
  --card: oklch(0.18 0.02 260);
  --card-foreground: oklch(0.98 0 0);
  --popover: oklch(0.18 0.02 260);
  --popover-foreground: oklch(0.98 0 0);
  --primary: oklch(0.75 0.18 145);
  --primary-foreground: oklch(0.13 0.02 260);
  --secondary: oklch(0.22 0.02 260);
  --secondary-foreground: oklch(0.98 0 0);
  --muted: oklch(0.25 0.02 260);
  --muted-foreground: oklch(0.65 0 0);
  --accent: oklch(0.65 0.20 85);
  --accent-foreground: oklch(0.13 0.02 260);
  --destructive: oklch(0.55 0.22 27);
  --destructive-foreground: oklch(0.98 0 0);
  --border: oklch(0.30 0.02 260);
  --input: oklch(0.25 0.02 260);
  --ring: oklch(0.75 0.18 145);
  --chart-1: oklch(0.75 0.18 145);
  --chart-2: oklch(0.65 0.20 85);
  --chart-3: oklch(0.60 0.15 200);
  --chart-4: oklch(0.70 0.15 50);
  --chart-5: oklch(0.55 0.22 27);
  --radius: 0.75rem;
  --success: oklch(0.75 0.18 145);
  --warning: oklch(0.65 0.20 85);
  --gold: oklch(0.80 0.15 85);
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0.145 0 0);
  --sidebar-primary: oklch(0.205 0 0);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.97 0 0);
  --sidebar-accent-foreground: oklch(0.205 0 0);
  --sidebar-border: oklch(0.922 0 0);
  --sidebar-ring: oklch(0.708 0 0);
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.145 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.145 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.985 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.396 0.141 25.723);
  --destructive-foreground: oklch(0.637 0.237 25.331);
  --border: oklch(0.269 0 0);
  --input: oklch(0.269 0 0);
  --ring: oklch(0.439 0 0);
  --chart-1: oklch(0.488 0.243 264.376);
  --chart-2: oklch(0.696 0.17 162.48);
  --chart-3: oklch(0.769 0.188 70.08);
  --chart-4: oklch(0.627 0.265 303.9);
  --chart-5: oklch(0.645 0.246 16.439);
  --sidebar: oklch(0.205 0 0);
  --sidebar-foreground: oklch(0.985 0 0);
  --sidebar-primary: oklch(0.488 0.243 264.376);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.269 0 0);
  --sidebar-accent-foreground: oklch(0.985 0 0);
  --sidebar-border: oklch(0.269 0 0);
  --sidebar-ring: oklch(0.439 0 0);
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px 0 oklch(0.75 0.18 145 / 0.3);
  }
  50% {
    box-shadow: 0 0 40px 10px oklch(0.75 0.18 145 / 0.5);
  }
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-shimmer {
  animation: shimmer 2s infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
}

/* Scroll Revelations */
.reveal-on-scroll {
  opacity: 0;
}

.animate-fade-up {
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-fade-in {
  animation: fadeIn 1s ease-out forwards;
}

.animate-scale-in {
  animation: scaleIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-right {
  animation: slideInRight 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Stagger delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: oklch(0.18 0.02 260);
}

::-webkit-scrollbar-thumb {
  background: oklch(0.35 0.02 260);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: oklch(0.45 0.02 260);
}

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

/* Selection color */
::selection {
  background: oklch(0.75 0.18 145 / 0.3);
  color: oklch(0.98 0 0);
}

body {
  background-color: var(--background);
  color: var(--foreground);
}
/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 50;
    width: 3rem;
    height: 3rem;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    background-color: var(--primary); /* Maintain color, just effect */
    filter: brightness(1.1);
}