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

    body { 
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      background: #0a0a0f;
      color: #ffffff;
      overflow-x: hidden;
      position: relative;
      min-height: 100vh;
    }

    /* Animated Background */
    .animated-bg {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 0;
      overflow: hidden;
    }

    .gradient-orb {
      position: absolute;
      border-radius: 50%;
      filter: blur(80px);
      opacity: 0.4;
      animation: float 20s ease-in-out infinite;
    }

    .orb-1 {
      width: 500px;
      height: 500px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      top: -10%;
      left: -10%;
      animation-delay: 0s;
    }

    .orb-2 {
      width: 400px;
      height: 400px;
      background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
      top: 40%;
      right: -5%;
      animation-delay: -5s;
    }

    .orb-3 {
      width: 450px;
      height: 450px;
      background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
      bottom: -15%;
      left: 30%;
      animation-delay: -10s;
    }

    @keyframes float {
      0%, 100% { transform: translate(0, 0) scale(1); }
      25% { transform: translate(50px, -50px) scale(1.1); }
      50% { transform: translate(-30px, 50px) scale(0.9); }
      75% { transform: translate(30px, 30px) scale(1.05); }
    }

    /* Glass morphism */
    .glass {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    }

    .glass-strong {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(30px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }

    /* Content container */
    .content {
      position: relative;
      z-index: 1;
    }

    /* Header */
    .header {
      backdrop-filter: blur(20px);
      background: rgba(10, 10, 15, 0.8);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .logo-text {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      font-weight: 800;
      font-size: 1.75rem;
      letter-spacing: -0.02em;
    }

    /* Drop Zone */
    .drop-zone {
      border: 2px dashed rgba(99, 102, 241, 0.3);
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
      border-radius: 24px;
      padding: 4rem;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      position: relative;
      overflow: hidden;
    }

    .drop-zone::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
      opacity: 0;
      transition: opacity 0.3s;
    }

    .drop-zone:hover::before {
      opacity: 1;
    }

    .drop-zone:hover {
      transform: translateY(-8px);
      border-color: rgba(99, 102, 241, 0.6);
      box-shadow: 0 20px 60px rgba(99, 102, 241, 0.3);
    }

    .drop-zone.dragover {
      transform: scale(1.02);
      border-color: #6366f1;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    }

    .upload-icon {
      font-size: 4rem;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      animation: pulse 2s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.1); opacity: 0.8; }
    }

    /* Buttons */
    .btn-primary {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border: none;
      padding: 0.75rem 2rem;
      border-radius: 12px;
      color: white;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s;
      box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
      position: relative;
      overflow: hidden;
    }

    .btn-primary::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
      transition: left 0.5s;
    }

    .btn-primary:hover::before {
      left: 100%;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 0.75rem 2rem;
      border-radius: 12px;
      color: white;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s;
      backdrop-filter: blur(10px);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.15);
      transform: translateY(-2px);
    }

    .btn-danger {
      background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
      border: none;
      padding: 0.75rem 2rem;
      border-radius: 12px;
      color: white;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s;
      box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
    }

    .btn-danger:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245, 87, 108, 0.6);
    }

    /* Cards */
    .card {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 16px;
      padding: 1.5rem;
      transition: all 0.3s;
    }

    .card:hover {
      background: rgba(255, 255, 255, 0.08);
      transform: translateY(-4px);
      box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    }

    /* Signer Card */
    .signer-card {
      display: flex;
      gap: 0.75rem;
      align-items: center;
      padding: 0.75rem;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      transition: all 0.3s;
      animation: slideIn 0.5s ease-out;
    }

    @keyframes slideIn {
      from {
        opacity: 0;
        transform: translateX(-20px);
      }
      to {
        opacity: 1;
        transform: translateX(0);
      }
    }

    .signer-card:hover {
      background: rgba(255, 255, 255, 0.08);
      transform: translateX(4px);
    }

    .signer-thumb {
        padding: 1px;
        background: white;
      width: 56px;
      height: 56px;
      object-fit: cover;
      border-radius: 5px;
      border: 2px solid rgba(99, 102, 241, 0.5);
      cursor: pointer;
      transition: all 0.3s;
    }

    .signer-thumb:hover {
      transform: scale(1.1);
      border-color: #6366f1;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.5);
    }

    /* QR Box */
    .qr-box {
      background: rgba(255, 255, 255, 0.05);
      border-radius: 16px;
      padding: 1.5rem;
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .qr-box img {
      width: 200px;
      height: 200px;
      object-fit: contain;
      border-radius: 12px;
      background: white;
      padding: 1rem;
    }

    /* Badge */
    .badge {
      padding: 0.5rem 1rem;
      border-radius: 20px;
      font-size: 0.875rem;
      font-weight: 600;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
      border: 1px solid rgba(99, 102, 241, 0.3);
      color: #a5b4fc;
    }

    /* Text styles */
    .text-gradient {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .text-muted {
      color: rgba(255, 255, 255, 0.6);
    }

    .text-small {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.5);
    }

    /* Footer */
    footer {
      background: rgba(10, 10, 15, 0.8);
      backdrop-filter: blur(20px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-top: 4rem;
    }

    /* Custom Scrollbar */
    ::-webkit-scrollbar {
      width: 8px;
    }

    ::-webkit-scrollbar-track {
      background: rgba(255, 255, 255, 0.05);
    }

    ::-webkit-scrollbar-thumb {
      background: rgba(99, 102, 241, 0.5);
      border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
      background: rgba(99, 102, 241, 0.7);
    }

    /* SweetAlert2 custom styles */
    .swal2-popup {
      background: rgba(20, 20, 30, 0.95) !important;
      backdrop-filter: blur(30px) !important;
      border: 1px solid rgba(255, 255, 255, 0.1) !important;
      color: white !important;
    }

    .swal2-title {
      color: white !important;
    }

    .swal2-html-container {
      color: rgba(255, 255, 255, 0.8) !important;
    }

    /* Animations */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .fade-in-up {
      animation: fadeInUp 0.6s ease-out;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .drop-zone {
        padding: 2rem;
      }
      
      .logo-text {
        font-size: 1.5rem;
      }
    }