/* ==========================================================================
   Fluid 120FPS Performance Design System - G. Sai Harshith Portfolio
   Engineered with Hardware Compositing Layers, GPU Acceleration & 3D Physics
   ========================================================================== */

/* Design Tokens & CSS Variables */
:root {
  --cyan-glow: rgba(6, 182, 212, 0.18);
  --violet-glow: rgba(139, 92, 246, 0.16);
  --spotlight-color: rgba(6, 182, 212, 0.08);
  --spring-easing: cubic-bezier(0.16, 1, 0.3, 1);
}

html:not(.dark) {
  --cyan-glow: rgba(6, 182, 212, 0.12);
  --violet-glow: rgba(139, 92, 246, 0.1);
  --spotlight-color: rgba(6, 182, 212, 0.05);
}

/* 120Hz Lenis Inertial Momentum Scroll Styles */
html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-smooth iframe {
  pointer-events: none;
}

/* Global Hardware Compositing Layer Promotion */
*, *::before, *::after {
  box-sizing: border-box;
}

/* High-Refresh Custom Scrollbar */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

.dark ::-webkit-scrollbar-track {
  background: #060911;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 9999px;
  border: 2px solid #f1f5f9;
  transition: background 0.2s ease;
}

.dark ::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 9999px;
  border: 2px solid #060911;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

.dark ::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* ==========================================================================
   Bento Cards: 3D Tilt Physics & Fluid Spring Mechanics
   ========================================================================== */
.bento-card {
  position: relative;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  will-change: transform, box-shadow;
  transition: box-shadow 0.4s var(--spring-easing), border-color 0.3s ease;
}

.dark .bento-card:hover {
  box-shadow: 0 24px 50px -15px rgba(0, 0, 0, 0.8), 0 0 30px -5px var(--cyan-glow);
}

html:not(.dark) .bento-card:hover {
  box-shadow: 0 24px 45px -12px rgba(0, 0, 0, 0.08), 0 0 25px -5px var(--cyan-glow);
}

/* Mouse-follow spotlight glow on cards (Smoothly Interpolated) */
.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    550px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    var(--spotlight-color),
    transparent 45%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  z-index: 1;
}

.bento-card:hover::before {
  opacity: 1;
}

/* ==========================================================================
   Fluid Scroll Reveal Mechanics (120FPS GPU Pipeline)
   ========================================================================== */
.reveal-item {
  opacity: 0;
  transform: translate3d(0, 32px, 0);
  transition: opacity 0.85s var(--spring-easing), transform 0.85s var(--spring-easing);
  will-change: opacity, transform;
}

.reveal-item.revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Stagger delays for sibling items */
.stagger-1 { transition-delay: 60ms; }
.stagger-2 { transition-delay: 120ms; }
.stagger-3 { transition-delay: 180ms; }
.stagger-4 { transition-delay: 240ms; }

/* ==========================================================================
   Magnetic Action Buttons (Fluid Momentum)
   ========================================================================== */
.magnetic-btn {
  display: inline-flex;
  transform: translate3d(0, 0, 0);
  will-change: transform;
  transition: transform 0.25s var(--spring-easing);
}

/* Terminal Drawer Custom Scroll & Caret */
#terminal-output::-webkit-scrollbar {
  width: 5px;
}
#terminal-output::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.cursor-blink {
  animation: blink 1s infinite;
}

/* JetBrains Mono typography tag */
kbd {
  font-family: 'JetBrains Mono', monospace;
}