/* ==========================================================================
   BIZZLOOP MASTER STYLESHEET (css/style.css)
   UK Business Growth & Operations Operating System
   ========================================================================== */

:root {
  /* Brand Core Color Palette */
  --bl-brand-50: #EFF6FF;
  --bl-brand-100: #DBEAFE;
  --bl-brand-200: #BFDBFE;
  --bl-brand-300: #93C5FD;
  --bl-brand-400: #60A5FA;
  --bl-brand-500: #1451D8; /* Primary Royal/Electric Blue */
  --bl-brand-600: #1D4ED8;
  --bl-brand-700: #1E40AF;
  --bl-brand-800: #1E3A8A;
  --bl-brand-900: #0F172A;

  /* Accent Colors */
  --bl-cyan: #04A5C2;
  --bl-cyan-light: #E0F7FA;
  --bl-emerald: #10B981;
  --bl-emerald-light: #ECFDF5;
  --bl-amber: #F59E0B;
  --bl-rose: #F43F5E;
  --bl-purple: #8B5CF6;

  /* Neutrals */
  --bl-bg: #FFFFFF;
  --bl-bg-alt: #F8FAFC;
  --bl-dark: #0F172A;
  --bl-slate-600: #475569;
  --bl-slate-400: #94A3B8;
  --bl-border: #E2E8F0;
  --bl-border-light: #F1F5F9;

  /* Shadows */
  --bl-shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --bl-shadow-md: 0 8px 24px rgba(20, 81, 216, 0.08);
  --bl-shadow-lg: 0 16px 40px rgba(20, 81, 216, 0.12);
  --bl-shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.15);

  /* Typography */
  --bl-font-sans: 'Inter', 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --bl-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--bl-font-sans);
  background-color: var(--bl-bg);
  color: var(--bl-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Selection Highlight */
::selection {
  background: var(--bl-brand-500);
  color: #FFFFFF;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

::-webkit-scrollbar-track {
  background: #F1F5F9;
}

::-webkit-scrollbar-thumb {
  background: rgba(20, 81, 216, 0.25);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bl-brand-500);
}

/* Ambient Canvas Background Layer */
#ambient-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Noise Texture Overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.018;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px;
}

/* Scroll Reading Progress Bar */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--bl-brand-500), var(--bl-cyan), var(--bl-emerald));
  z-index: 1000;
  width: 0%;
  transition: width 0.1s ease-out;
}

/* Typography Gradient Utilities */
.bl-gradient-text {
  background: linear-gradient(135deg, #1451D8 0%, #04A5C2 70%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bl-gradient-cyan {
  background: linear-gradient(135deg, #04A5C2 0%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bl-gradient-royal {
  background: linear-gradient(135deg, #1E40AF 0%, #1451D8 50%, #04A5C2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Section Backgrounds */
.section-alt {
  background-color: var(--bl-bg-alt);
}

.section-mesh {
  background: radial-gradient(circle at 10% 20%, rgba(20, 81, 216, 0.03) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(4, 165, 194, 0.04) 0%, transparent 45%),
              #FFFFFF;
}

.section-dark-mesh {
  background: radial-gradient(circle at 20% 30%, rgba(20, 81, 216, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(4, 165, 194, 0.12) 0%, transparent 50%),
              #0F172A;
}

/* Glassmorphism Styles */
.bl-glass {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: var(--bl-shadow-sm);
}

.bl-glass-strong {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  border: 1px solid rgba(226, 232, 240, 0.95);
  box-shadow: var(--bl-shadow-md);
}

.bl-glass-dark {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

@keyframes flowDash {
  to { stroke-dashoffset: -40; }
}

.animate-float {
  animation: float 5s ease-in-out infinite;
}

.animate-float-delayed {
  animation: float 6s ease-in-out 2s infinite;
}

.animate-pulse-glow {
  animation: pulseGlow 4s ease-in-out infinite;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* Mobile & Tablet Touch Ergonomics (Google Mobile-Friendly & Core Web Vitals) */
@media (max-width: 1023px) {
  a, button, input, select, textarea {
    touch-action: manipulation;
  }
  .btn-primary, .btn-secondary, .action-btn {
    min-height: 44px;
  }
}