/* ==========================================================================
   AUTODESK CONSTRUCTION CONNECT — STYLESHEET
   Awwwards-level B2B Executive Summit Experience
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Autodesk Executive Brand Palette */
  --bg-primary: #FFFFFF;
  --bg-offwhite: #F8F9FA;
  --bg-subtle: #F1F3F6;
  --bg-dark: #0B0D11;
  --bg-dark-elevated: #13171F;
  --bg-dark-card: #181C26;

  --text-primary: #0F1218;
  --text-secondary: #4A5160;
  --text-muted: #727B8E;
  --text-inverse: #FFFFFF;

  --autodesk-red: #E52E2D;
  --autodesk-red-hover: #CC2322;
  --autodesk-red-light: #FFF0F0;
  --autodesk-red-glow: rgba(229, 46, 45, 0.35);

  --accent-cyan: #0091FF;
  --accent-cyan-subtle: rgba(0, 145, 255, 0.12);

  --border-light: rgba(15, 23, 42, 0.08);
  --border-medium: rgba(15, 23, 42, 0.14);
  --border-dark: rgba(255, 255, 255, 0.08);
  --border-dark-highlight: rgba(255, 255, 255, 0.16);

  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-primary);
  line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #F1F3F6;
}
::-webkit-scrollbar-thumb {
  background: #CBD2DE;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Selection Color */
::selection {
  background: #0B0D11;
  color: #FFFFFF;
}

/* Typography Helpers */
.font-display { font-family: var(--font-display); }
.font-sans { font-family: var(--font-sans); }
.font-mono { font-family: var(--font-mono); }

.tracking-tight-editorial {
  letter-spacing: -0.035em;
}

.tracking-loose-caps {
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* Grid Background Patterns */
.bg-tech-grid {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
}

.bg-dark-grid {
  background-size: 48px 48px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
}

.bg-dot-matrix {
  background-image: radial-gradient(rgba(15, 23, 42, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Engineering Crosshair & Coordinate Markers */
.crosshair-corner {
  position: relative;
}
.crosshair-corner::before,
.crosshair-corner::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  pointer-events: none;
  z-index: 2;
}
.crosshair-corner::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--autodesk-red);
  border-left: 2px solid var(--autodesk-red);
}
.crosshair-corner::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--autodesk-red);
  border-right: 2px solid var(--autodesk-red);
}

/* Corner plus markers */
.corner-plus {
  position: absolute;
  width: 9px;
  height: 9px;
  pointer-events: none;
}
.corner-plus::before {
  content: '';
  position: absolute;
  top: 4px;
  left: 0;
  width: 9px;
  height: 1px;
  background-color: var(--border-medium);
}
.corner-plus::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 0;
  width: 1px;
  height: 9px;
  background-color: var(--border-medium);
}

/* Live Telemetry Dot */
.telemetry-pulse {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--autodesk-red);
  border-radius: 50%;
}
.telemetry-pulse::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1.5px solid var(--autodesk-red);
  animation: pulse-ring 2.2s cubic-bezier(0.24, 0, 0.38, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.6); opacity: 0.9; }
  70% { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* Button Micro-Interactions */
.btn-primary-autodesk {
  position: relative;
  background-color: #0B0D11;
  color: #FFFFFF;
  border: 1px solid #0B0D11;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}
.btn-primary-autodesk::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.6s ease;
}
.btn-primary-autodesk:hover {
  background-color: var(--autodesk-red);
  border-color: var(--autodesk-red);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px var(--autodesk-red-glow);
}
.btn-primary-autodesk:hover::before {
  left: 100%;
}

.btn-secondary-autodesk {
  position: relative;
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}
.btn-secondary-autodesk:hover {
  border-color: #0B0D11;
  background-color: rgba(11, 13, 17, 0.04);
  transform: translateY(-2px);
}

/* Editorial Card Hover Animation */
.editorial-takeaway-card {
  position: relative;
  background-color: #FFFFFF;
  border: 1px solid var(--border-light);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.editorial-takeaway-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--autodesk-red);
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 5;
}
.editorial-takeaway-card:hover {
  transform: translateY(-6px);
  border-color: rgba(15, 23, 42, 0.2);
  box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.08);
}
.editorial-takeaway-card:hover::before {
  width: 100%;
}
.editorial-takeaway-card .card-number {
  transition: color 0.3s ease, transform 0.3s ease;
}
.editorial-takeaway-card:hover .card-number {
  color: var(--autodesk-red);
  transform: translateX(4px);
}

/* Floating Data Pins */
.hero-data-pin {
  backdrop-filter: blur(12px);
  background-color: rgba(11, 13, 17, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #FFFFFF;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.hero-data-pin:hover {
  transform: scale(1.04);
  border-color: var(--autodesk-red);
}

/* SVG Line Animations */
.path-circuit {
  stroke-dasharray: 6 6;
  animation: circuitFlow 24s linear infinite;
}
@keyframes circuitFlow {
  from { stroke-dashoffset: 240; }
  to { stroke-dashoffset: 0; }
}

/* Agenda Timeline Active Track */
.timeline-progress-line {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: rgba(15, 23, 42, 0.08);
}
.timeline-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(to bottom, var(--autodesk-red) 0%, #0B0D11 100%);
  transition: height 0.15s ease-out;
}

.timeline-node {
  transition: all 0.3s ease;
}
.timeline-item.is-active .timeline-node {
  background-color: var(--autodesk-red) !important;
  box-shadow: 0 0 0 6px rgba(229, 46, 45, 0.2);
  transform: scale(1.2);
}
.timeline-card.bg-brand-dark {
  background-color: #0B0D11 !important;
  color: #FFFFFF !important;
}
.timeline-item.is-active .timeline-card {
  border-color: rgba(229, 46, 45, 0.4);
  box-shadow: 0 12px 28px -8px rgba(15, 23, 42, 0.08);
}
.timeline-item.is-active .timeline-card:not(.bg-brand-dark) {
  background-color: #FFFFFF;
}
.timeline-item.is-active .timeline-card.bg-brand-dark {
  background-color: #0B0D11 !important;
  color: #FFFFFF !important;
  border-color: var(--autodesk-red) !important;
  box-shadow: 0 16px 36px -8px rgba(229, 46, 45, 0.35) !important;
}
.timeline-item.is-active .timeline-time {
  color: var(--autodesk-red);
}

/* Audience Big Typography Marquee/Grid */
.audience-item {
  transition: color 0.3s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.audience-item:hover {
  color: var(--autodesk-red);
  transform: translateX(12px);
}

/* Modal Overlay & Drawer */
.modal-backdrop {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(8px);
  background: rgba(11, 13, 17, 0.65);
}
.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}
.modal-panel {
  transform: scale(0.96) translateY(20px);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}
.modal-backdrop.is-open .modal-panel {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* Text Reveal Clip Paths */
.overflow-clip-mask {
  overflow: hidden;
}
.line-reveal {
  display: block;
  transform: translateY(115%);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.line-reveal.revealed {
  transform: translateY(0%);
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
    scroll-behavior: auto !important;
  }
  .line-reveal {
    transform: none !important;
  }
}