/* 
  MrMachinist: Premium Engineering Framework (v4.0)
  High-End Industrial Design System
*/

:root {
  --color-bg: #05070A;
  --color-surface: #0A0D12;
  --color-surface-bright: #121820;
  --color-accent: #2EA8FF;
  --color-accent-glow: rgba(46, 168, 255, 0.15);
  --color-warning: #FF8A1F;
  --color-warning-glow: rgba(255, 138, 31, 0.15);
  --color-success: #22C55E;
  --color-text-main: #E6EDF3;
  --color-text-dim: #8B949E;
  --color-border: rgba(48, 54, 61, 0.6);
  --color-border-bright: rgba(46, 168, 255, 0.3);
  
  --font-heading: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --transition-main: all 0.6s var(--ease-out-expo);
  --section-padding: clamp(4rem, 10vw, 8rem);
}

/* Base Styles */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background System */
.ui-background {
  position: fixed; inset: 0; z-index: -1;
  background: radial-gradient(circle at 50% 50%, #0D1117 0%, #05070A 100%);
}
.grid-layer {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(46, 168, 255, 0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(46, 168, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-move 120s linear infinite;
}
@keyframes grid-move { from { background-position: 0 0; } to { background-position: 60px 60px; } }

/* Typography */
h1, h2, h3 { font-family: var(--font-heading); font-weight: 800; letter-spacing: -0.02em; }
.hero-title { font-size: clamp(2.5rem, 8vw, 5.5rem); line-height: 1; margin-bottom: 1.5rem; }
.hero-title span { color: var(--color-accent); text-shadow: 0 0 30px var(--color-accent-glow); }
.kicker { font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-accent); text-transform: uppercase; letter-spacing: 0.3em; margin-bottom: 1rem; display: block; }

/* Layout */
.container { max-width: 1400px; margin: 0 auto; padding: 0 2rem; }
.section { padding: var(--section-padding) 0; border-bottom: 1px solid var(--color-border); }

/* Navigation */
.site-header {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  padding: 1.5rem 0;
  background: rgba(5, 7, 10, 0.3);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid transparent;
  transition: var(--transition-main);
}
.site-header.scrolled { padding: 1rem 0; background: rgba(5, 7, 10, 0.9); border-bottom: 1px solid var(--color-border); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; }
.brand-logo { height: 60px; width: auto; transition: var(--transition-main); }
.site-header.scrolled .brand-logo { height: 45px; }

.main-nav { display: flex; gap: 2.5rem; }
.main-nav a { color: var(--color-text-dim); text-decoration: none; font-size: 0.8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; transition: color 0.3s; }
.main-nav a:hover { color: var(--color-accent); }

.lang-switch { display: flex; gap: 0.5rem; background: rgba(255,255,255,0.05); padding: 4px; border-radius: 4px; }
.lang-btn { background: transparent; border: none; color: var(--color-text-dim); padding: 4px 8px; font-size: 0.7rem; font-weight: 800; cursor: pointer; border-radius: 2px; }
.lang-btn.is-active { background: var(--color-accent); color: white; }

/* Cards & Interaction */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2.5rem;
  transition: var(--transition-main);
  position: relative;
  overflow: hidden;
}
.card:hover { border-color: var(--color-accent); transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.5); }
.card::after {
  content: ""; position: absolute; inset: 0; 
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(46, 168, 255, 0.1) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.3s;
}
.card:hover::after { opacity: 1; }

/* Form Elements */
input, textarea {
  width: 100%; background: rgba(255,255,255,0.03); border: 1px solid var(--color-border);
  padding: 1rem; color: #fff; font-family: var(--font-body); transition: border-color 0.3s;
}
input:focus, textarea:focus { outline: none; border-color: var(--color-accent); background: rgba(255,255,255,0.05); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1rem 2rem; font-family: var(--font-heading); font-weight: 800;
  text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.1em;
  border-radius: 2px; cursor: pointer; border: none; transition: var(--transition-main);
  text-decoration: none;
}
.btn-primary { background: var(--color-accent); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 5px 20px var(--color-accent-glow); }
.btn-secondary { background: transparent; color: white; border: 1px solid var(--color-border); }
.btn-secondary:hover { border-color: var(--color-accent); background: rgba(46,168,255,0.05); }

/* Animations */
.gs-reveal { opacity: 0; transform: translateY(30px); }

/* Responsive */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .container { padding: 0 1.5rem; }
  .hero-grid { grid-template-columns: 1fr !important; gap: 3rem !important; }
}