@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
  /* Premium Dark Mode */
  --bg: #050505;
  --bg-surface: rgba(255, 255, 255, 0.03);
  --bg-surface-hover: rgba(255, 255, 255, 0.06);
  
  --border: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(255, 255, 255, 0.2);
  
  --text-primary: #FFFFFF;
  --text-secondary: #A1A1AA;
  
  --accent-cyan: #00F0FF;
  --accent-violet: #7A00FF;
  --accent-green: #10B981;
  --accent-red: #EF4444;
  --accent-amber: #F59E0B;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --max-width: 1100px;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-snappy: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}

/* Base Reset & Fluid Typography */
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(122, 0, 255, 0.03), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(0, 240, 255, 0.03), transparent 25%);
  background-attachment: fixed;
  overflow-x: hidden;
  opacity: 0; /* Fade in handled by body.loaded */
  transition: opacity 0.4s ease;
}

body.loaded {
  opacity: 1;
}

body.fade-out {
  opacity: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-bottom: 24px; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin-bottom: 24px; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 12px; }

p { margin-bottom: 24px; color: var(--text-secondary); font-size: 1rem; }

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-snappy);
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
}

/* Navigation - Desktop (Top) / Mobile (Bottom Floating Pill) */
.nav-container {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: center;
  padding: 24px;
  pointer-events: none; /* Let clicks pass through padding */
}

nav {
  pointer-events: auto;
  background: var(--bg-surface);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: 100px;
  display: flex;
  align-items: center;
  padding: 8px 16px;
  gap: 32px;
  transition: var(--transition-smooth);
}

.nav-brand {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
  padding-right: 16px;
  border-right: 1px solid var(--border);
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 4px;
  position: relative;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  width: 16px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transform: translateX(-50%);
}

@media (max-width: 768px) {
  .nav-container {
    top: auto;
    bottom: 24px; /* Float at bottom for mobile */
  }
  
  nav {
    padding: 12px 24px;
    width: 100%;
    max-width: 340px;
    justify-content: space-between;
    gap: 0;
  }
  
  .nav-brand {
    display: none; /* Hide brand on mobile nav to save space */
  }
  
  .nav-links {
    width: 100%;
    justify-content: space-between;
  }
  
  .nav-links a {
    font-size: 0.75rem;
  }
}

/* Interactive Grid & Cards */
.grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 768px) {
  .grid-2x2, .grid-3-col {
    grid-template-columns: 1fr;
  }
}

.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(800px circle at var(--mouse-x) var(--mouse-y), rgba(255,255,255,0.04), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.glass-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-glow);
  background: var(--bg-surface-hover);
}
.glass-card:active {
  transform: translateY(1px) scale(0.99);
}

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

.card-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--border-glow);
  margin-bottom: 16px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--text-primary);
  color: var(--bg);
  padding: 12px 24px;
  border-radius: 100px;
  font-weight: 500;
  font-size: 0.875rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-snappy);
  white-space: nowrap;
}

.btn:hover {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-glow);
  box-shadow: 0 0 20px rgba(255,255,255,0.1);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-glow);
}

/* Forms */
input, textarea, select {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.875rem;
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  transition: var(--transition-snappy);
  appearance: none;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--border-glow);
  background: rgba(255, 255, 255, 0.06);
}
label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

/* Antigravity Custom Styles */
#antigravity-container {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
  background-color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
}
#antigravity-canvas {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%; z-index: 1;
  pointer-events: none;
}

#antigravity-overlay {
  text-align: center;
  z-index: 10;
  width: 90%;
  max-width: 800px;
  pointer-events: auto;
  position: relative;
}

/* Resolved Grid */
#blocks-grid-wrapper {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 1000px;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}
@media(max-width:768px) {
  #blocks-grid-wrapper { grid-template-columns: repeat(2, 1fr); }
}
.resolved-block {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--text-primary);
  font-size: 0.7rem;
  padding: 16px;
  border-radius: 8px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.resolved-block svg {
  flex-shrink: 0;
  color: var(--accent-green);
  width: 16px; height: 16px;
  margin-top: 1px;
}

/* Physics DOM blocks (the chaos blocks) */
.physics-block {
  position: absolute;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 500;
  text-align: center;
  padding: 8px 16px;
  transform-origin: center center;
  pointer-events: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Case Files Specifics */
.case-file {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}
.case-file:last-child {
  border-bottom: none;
}
.badge-status {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.7rem;
  display: inline-block;
  font-weight: 500;
  margin-left: 16px;
  vertical-align: middle;
}
.badge-active { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.2); }
.badge-closed { background: var(--bg-surface); color: var(--text-secondary); border: 1px solid var(--border); }
.badge-ongoing { background: rgba(245, 158, 11, 0.1); color: var(--accent-amber); border: 1px solid rgba(245, 158, 11, 0.2); }

.competency-badge {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 6px 16px;
  border-radius: 100px;
  display: inline-block;
}

/* Mockup UI (Apple Style Message Bubbles) */
.mockup-container {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  height: 320px;
  overflow-y: auto;
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mockup-bubble {
  max-width: 80%;
  padding: 12px 16px;
  line-height: 1.4;
}
.mockup-customer {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  align-self: flex-end;
  border-radius: 16px 16px 2px 16px;
}
.mockup-vendor {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--text-primary);
  align-self: flex-start;
  border-radius: 16px 16px 16px 2px;
}
.mockup-bot {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.2);
  color: var(--text-primary);
  align-self: flex-start;
  border-radius: 16px 16px 16px 2px;
}

/* Utilities */
.lowercase { text-transform: lowercase; }
.muted { color: var(--text-secondary) !important; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Article Styles */
.article-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition-snappy);
}
.article-list-item:hover {
  background: var(--bg-surface);
  padding-left: 16px;
  padding-right: 16px;
  border-radius: 8px;
  border-bottom-color: transparent;
}
@media (max-width: 768px) {
  .article-list-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 64px 0 120px 0; /* extra padding bottom for mobile floating nav */
}
.footer-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 768px) {
  .footer-wrap { grid-template-columns: 1fr; }
}
.footer-wrap a { display: block; margin-bottom: 12px; color: var(--text-secondary); font-size: 0.875rem;}
.footer-wrap a:hover { color: var(--text-primary); }