/* === CORES E BASE === */
    :root {
      --laranja: #ff6600;
      --roxo: #8a0a8f;
      --fundo: linear-gradient(135deg, rgba(15,23,42,1) 0%, rgba(0,0,0,0.9) 100%);
      --texto-claro: rgba(255,255,255,0.9);
    }

    body {
      font-family: 'Poppins', sans-serif;
      background: var(--fundo);
      color: var(--texto-claro);
      overflow-x: hidden;
      margin: 0;
    }

    /* === CABEÇALHO === */
    header {
      background: rgba(235, 152, 27, 0.9);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 15px 50px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.3);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    header img {
      height: 60px;
      border-radius: 50%;
      transition: transform 0.3s;
    }

    header img:hover {
      transform: rotate(-10deg) scale(1.05);
    }

    header h1 {
      color: #fff;
      font-size: 1.8em;
      margin: 0;
      text-shadow: 0 0 10px rgba(0,0,0,0.4);
    }

    nav a {
      color: #fff;
      text-decoration: none;
      margin: 0 15px;
      font-weight: 500;
      transition: all 0.3s ease;
    }

    nav a:hover {
      color: var(--laranja);
      text-shadow: 0 0 10px rgba(255,255,255,0.5);
    }

    /* === CONTEÚDO PRINCIPAL === */
    .container {
      background: rgba(255,255,255,0.05);
      border-radius: 15px;
      box-shadow: 0 0 25px rgba(255,102,0,0.2);
      padding: 40px;
      margin-top: 60px;
    }

    h1, h2, h3 {
      color: var(--laranja);
      text-shadow: 0 0 8px rgba(255,102,0,0.3);
    }

    .plan-card {
      background: rgba(255, 255, 255, 0.08);
      border: none;
      border-radius: 20px;
      box-shadow: 0 0 20px rgba(255,102,0,0.3);
      transition: 0.4s;
      color: #fff;
    }

    .plan-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 0 30px rgba(255,102,0,0.6);
    }

    .plan-card .card-title {
      color: var(--laranja);
      font-size: 1.4em;
      font-weight: 600;
    }

    .plan-card .card-text {
      color: #fff;
      font-size: 1.1em;
    }

    /* === FORMULÁRIO === */
    form {
      background: rgba(255,255,255,0.05);
      border-radius: 15px;
      box-shadow: 0 0 20px rgba(255,102,0,0.3);
      padding: 30px;
      transition: 0.4s;
    }

    form:hover {
      box-shadow: 0 0 35px rgba(255,102,0,0.5);
    }

    label {
      font-weight: 500;
      color: #fff;
    }

    .form-control, .form-select {
      background: rgba(255,255,255,0.1);
      border: 1px solid rgba(255,255,255,0.2);
      color: #fff;
    }

    .form-control:focus, .form-select:focus {
      border-color: var(--laranja);
      box-shadow: 0 0 10px rgba(255,102,0,0.5);
    }

    .btn-primary {
      background: var(--roxo);
      border: none;
      transition: 0.3s;
    }

    .btn-primary:hover {
      background: var(--laranja);
      transform: scale(1.05);
    }

    .btn-success {
      background: var(--laranja);
      border: none;
      transition: 0.3s;
    }

    .btn-success:hover {
      background: var(--roxo);
      transform: scale(1.05);
    }

    /* === RODAPÉ === */
    footer {
      background: rgba(0,0,0,0.8);
      color: #fff;
      text-align: center;
      padding: 20px 0;
      margin-top: 60px;
      box-shadow: 0 -4px 10px rgba(255,102,0,0.3);
    }

    /* === RESPONSIVO === */
    @media (max-width: 768px) {
      header {
        flex-direction: column;
        gap: 10px;
      }

      nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
      }

      .container {
        padding: 20px;
      }
    }