.sbody {
          font-family: 'Poppins', sans-serif;
          background: linear-gradient(145deg, var(--light-blue) 0%, var(--secondary-blue) 100%);
          min-height: 100vh;
          display: flex;
          flex-direction: column;
        }

        .newsletter-container {
          padding: 3rem 1rem;
          flex: 1;
          display: flex;
          align-items: center;
          justify-content: center;
        }

        .newsletter-card {
          background-color: white;
          border-radius: var(--border-radius);
          box-shadow: var(--card-shadow);
          overflow: hidden;
          transition: box-shadow var(--transition-speed);
          max-width: 550px;
          width: 100%;
        }

        .newsletter-card:hover {
          box-shadow: var(--hover-shadow);
        }

        .card-header {
          background: var(--primary-blue);
          color: white;
          padding: 2rem 1.5rem;
          position: relative;
          overflow: hidden;
        }

        .card-header::before {
          content: '';
          position: absolute;
          top: -50px;
          right: -50px;
          width: 100px;
          height: 100px;
          background: var(--accent-color);
          border-radius: 50%;
          opacity: 0.2;
        }

        .card-header::after {
          content: '';
          position: absolute;
          bottom: -50px;
          left: -50px;
          width: 100px;
          height: 100px;
          background: var(--light-blue);
          border-radius: 50%;
          opacity: 0.2;
        }

        .card-header h2 {
          font-weight: 700;
          margin-bottom: 0.5rem;
          position: relative;
          z-index: 1;
        }

        .card-header p {
          opacity: 0.9;
          position: relative;
          z-index: 1;
          margin-bottom: 0;
        }

        .card-body {
          padding: 2.5rem;
        }

        .form-control {
          height: 54px;
          border-radius: calc(var(--border-radius) / 2);
          border: 1px solid #e0e0e0;
          padding: 0.75rem 1.25rem;
          font-size: 1rem;
          transition: all var(--transition-speed);
        }

        .form-control:focus {
          border-color: var(--primary-blue);
          box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
        }

        .form-label {
          font-weight: 500;
          color: var(--text-dark);
          margin-bottom: 0.5rem;
        }

        .btn-subscribe {
          height: 54px;
          background: var(--primary-blue);
          border: none;
          border-radius: calc(var(--border-radius) / 2);
          color: white;
          font-weight: 600;
          letter-spacing: 0.3px;
          transition: all var(--transition-speed);
        }

        .btn-subscribe:hover {
          background: var(--secondary-blue);
          transform: translateY(-2px);
        }

        .privacy-text {
          font-size: 0.85rem;
          color: var(--text-light);
          text-align: center;
          margin-top: 1.5rem;
        }

        .privacy-text a {
          color: var(--primary-blue);
          text-decoration: none;
        }

        .privacy-text a:hover {
          text-decoration: underline;
        }

        .message-box {
          padding: 2rem;
          border-radius: var(--border-radius);
          text-align: center;
          display: none;
        }

        .success-message {
          background-color: rgba(40, 167, 69, 0.1);
          border: 1px solid rgba(40, 167, 69, 0.3);
        }

        .error-message {
          background-color: rgba(220, 53, 69, 0.1);
          border: 1px solid rgba(220, 53, 69, 0.3);
        }

        .icon-circle {
          width: 80px;
          height: 80px;
          border-radius: 50%;
          display: flex;
          align-items: center;
          justify-content: center;
          margin: 0 auto 1.5rem;
          font-size: 2rem;
        }

        .success-icon {
          background: rgba(40, 167, 69, 0.2);
          color: #28a745;
        }

        .error-icon {
          background: rgba(220, 53, 69, 0.2);
          color: #dc3545;
        }

        .message-box h3 {
          font-weight: 600;
          margin-bottom: 1rem;
          color: var(--text-dark);
        }

        .message-box p {
          font-size: 1rem;
          color: var(--text-light);
        }