/* roulang page: index */
:root {
      --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      --accent-cyan: #06b6d4;
      --accent-orange: #f97316;
      --dark-slate: #0f172a;
      --card-bg-light: #ffffff;
      --section-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-subtle: rgba(226, 232, 240, 0.8);
      --card-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.06);
      --card-shadow-hover: 0 25px 50px -12px rgba(79, 70, 229, 0.15);
    }
    
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    
    body {
      color: var(--text-main);
      background-color: #ffffff;
      overflow-x: hidden;
    }
    
    .bg-gradient-brand {
      background: var(--primary-gradient);
    }
    
    .card-modern {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 1.5rem;
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-modern:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(99, 102, 241, 0.3);
    }
    
    .badge-glow {
      box-shadow: 0 0 15px rgba(6, 182, 212, 0.35);
    }
    
    .text-gradient {
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .glass-dark {
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }