/* ==========================================================================
   Taksha VDC - High-Tech 3D BIM & Construction Styling
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --color-brand-red: #a52020;
  --color-brand-red-glow: rgba(165, 32, 32, 0.4);
  --color-cyan: #06b6d4;
  --color-blue: #3b82f6;
  --color-emerald: #10b981;
  --bg-dark: #070a13;
  --bg-card: rgba(15, 23, 42, 0.75);
  --border-card: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

:target {
  scroll-margin-top: 100px;
  animation: targetHighlight 2.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes targetHighlight {
  0% {
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.9), 0 15px 40px rgba(6, 182, 212, 0.4);
    border-color: rgba(6, 182, 212, 1);
  }
  100% {
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    border-color: var(--border-card);
  }
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: #e2e8f0;
  overflow-x: hidden;
}

h1, h2, h3, h4, .font-heading {
  font-family: var(--font-heading);
}

.font-mono {
  font-family: var(--font-mono);
}

/* Futuristic Tech Grid Background */
.tech-grid-bg {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

/* Ambient Radial Glow Orbs */
.glow-red {
  background: radial-gradient(circle, rgba(165, 32, 32, 0.2) 0%, rgba(165, 32, 32, 0) 70%);
}

.glow-cyan {
  background: radial-gradient(circle, rgba(6, 182, 212, 0.16) 0%, rgba(6, 182, 212, 0) 70%);
}

.glow-blue {
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(59, 130, 246, 0) 70%);
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-card:hover {
  border-color: rgba(6, 182, 212, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(6, 182, 212, 0.15);
}

.glass-card-red:hover {
  border-color: rgba(165, 32, 32, 0.5);
  box-shadow: 0 20px 40px -15px rgba(165, 32, 32, 0.25);
}

/* Glass Header */
.glass-header {
  background: rgba(7, 10, 19, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Gradient Text */
.gradient-text-red {
  background: linear-gradient(135deg, #f87171 0%, #a52020 60%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-cyan {
  background: linear-gradient(135deg, #38bdf8 0%, #06b6d4 50%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 3D Canvas Container */
#bim-3d-canvas-container {
  width: 100%;
  height: 540px;
  position: relative;
  border-radius: 1.25rem;
  overflow: hidden;
  cursor: grab;
}

#bim-3d-canvas-container:active {
  cursor: grabbing;
}

#bim-3d-canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
  outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #070a13;
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #a52020;
}

/* Interactive Tabs */
.service-tab.active {
  background: linear-gradient(135deg, #a52020 0%, #ef4444 100%);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(165, 32, 32, 0.4);
}

/* Smooth Fade In On Scroll */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}