:root {
      --bg-primary: #0b0f19;
      --bg-secondary: #161e31;
      --bg-tertiary: #1f2a45;
      
      --accent-blue: #2563eb;
      --accent-cyan: #06b6d4;
      --accent-purple: #8b5cf6;
      
      --text-primary: #f8fafc;
      --text-secondary: #94a3b8;
      --text-muted: #64748b;
      
      --success: #10b981;
      --warning: #f59e0b;
      --danger: #ef4444;
      
      --glass-bg: rgba(22, 30, 49, 0.75);
      --glass-border: rgba(255, 255, 255, 0.08);
      --glass-shadow: rgba(0, 0, 0, 0.3);
      
      --font-heading: 'Outfit', sans-serif;
      --font-body: 'Plus Jakarta Sans', sans-serif;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      
      --transition-fast: 0.2s ease;
      --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      background-color: var(--bg-primary);
      color: var(--text-primary);
      font-family: var(--font-body);
      -webkit-font-smoothing: antialiased;
      line-height: 1.6;
      overflow-x: hidden;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    /* Scrollbar */
    ::-webkit-scrollbar { width: 8px; }
    ::-webkit-scrollbar-track { background: var(--bg-primary); }
    ::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: var(--radius-sm); }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 24px;
    }

    /* Animaciones */
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .animate-fade-in {
      animation: fadeIn var(--transition-normal);
    }

    /* Header & Nav */
    header {
      border-bottom: 1px solid var(--glass-border);
      background: rgba(11, 15, 25, 0.8);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    /* Cards & Glass */
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      box-shadow: 0 8px 32px var(--glass-shadow);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: border-color var(--transition-fast);
    }
    .glass-card:hover {
      border-color: rgba(255, 255, 255, 0.15);
    }

    .text-gradient-sport {
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* Botones */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-family: var(--font-heading);
      font-weight: 600;
      text-decoration: none;
      cursor: pointer;
      transition: all var(--transition-fast);
      border: none;
      font-size: 0.9rem;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
      color: var(--text-primary);
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
    }

    .btn-secondary {
      background: var(--bg-tertiary);
      color: var(--text-primary);
      border: 1px solid var(--glass-border);
    }
    .btn-secondary:hover {
      background: rgba(255,255,255,0.05);
    }

    .btn-danger {
      background: var(--danger);
      color: var(--text-primary);
    }

    /* Formularios */
    .form-group {
      margin-bottom: 20px;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-label {
      font-size: 0.8rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-secondary);
    }
    .form-input, .form-select, .form-textarea {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid var(--glass-border);
      color: var(--text-primary);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      font-family: var(--font-body);
      font-size: 0.95rem;
      transition: all var(--transition-fast);
      width: 100%;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.25);
    }

    /* Tablas */
    .table-container {
      overflow-x: auto;
      border-radius: var(--radius-sm);
    }
    .table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .table th {
      background: var(--bg-tertiary);
      padding: 16px;
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.8rem;
      text-transform: uppercase;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--glass-border);
    }
    .table td {
      padding: 16px;
      border-bottom: 1px solid var(--glass-border);
      font-size: 0.9rem;
    }
    .table tr:hover td {
      background: rgba(255, 255, 255, 0.01);
    }

    /* Badges */
    .badge {
      display: inline-flex;
      padding: 4px 10px;
      border-radius: 9999px;
      font-size: 0.7rem;
      font-weight: 700;
      text-transform: uppercase;
    }
    .badge-success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
    .badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
    .badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
    .badge-info { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }

    /* Modales */
    .modal-backdrop {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.8);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      padding: 20px;
      overflow-y: auto;
    }
  


        .group-option-label input[type="radio"]:checked + .group-card {
          border-color: var(--accent-cyan) !important;
          background: rgba(6, 182, 212, 0.08) !important;
          box-shadow: 0 0 12px rgba(6, 182, 212, 0.25) !important;
        }
        .group-card:hover {
          border-color: rgba(255, 255, 255, 0.25) !important;
          background: rgba(255, 255, 255, 0.02) !important;
        }
        .group-card {
          cursor: pointer;
        }