body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        margin: 0;
        height: 100vh;
        background: linear-gradient(135deg, #5C2D91, #7B4FCC);
        display: flex;
        justify-content: center;
        align-items: center;
        overflow: hidden;
    }

    /* Fundo animado */
    body::before {
        content: "";
        position: absolute;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle at center, rgba(255,255,255,0.05), transparent 70%);
        animation: rotateBG 30s linear infinite;
        z-index: 0;
    }

    @keyframes rotateBG {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    .container {
        position: relative;
        z-index: 1;
        background: rgba(255, 255, 255, 0.95);
        border-radius: 20px;
        padding: 50px 30px;
        max-width: 420px;
        width: 90%;
        box-shadow: 0 20px 50px rgba(0,0,0,0.3);
        backdrop-filter: blur(10px);
        text-align: center;
        transform: translateY(-20px);
        transition: transform 0.3s;
    }

    .container:hover {
        transform: translateY(-25px);
    }

    .header .logo {
        width: 120px;
        margin-bottom: 15px;
    }

    .header h1 {
        font-size: 26px;
        color: #5C2D91;
        margin-bottom: 10px;
    }

    .header p.para {
        font-size: 15px;
        color: #555;
        margin-bottom: 30px;
    }

    .form-group {
        margin-bottom: 20px;
        text-align: left;
    }

    .form-group label {
        display: block;
        margin-bottom: 5px;
        font-weight: 600;
        color: #444;
    }

    .form-group input {
        width: 100%;
        padding: 12px;
        border: 1px solid #ccc;
        border-radius: 12px;
        font-size: 15px;
        transition: all 0.3s;
    }

    .form-group input:focus {
        border-color: #5C2D91;
        box-shadow: 0 0 8px rgba(92, 45, 145, 0.3);
        outline: none;
    }

    .btn-submit {
        width: 100%;
        padding: 14px;
        border: none;
        border-radius: 12px;
        background: #5C2D91;
        color: white;
        font-weight: bold;
        font-size: 16px;
        cursor: pointer;
        transition: all 0.3s;
    }

    .btn-submit:hover {
        background: #7B4FCC;
        transform: scale(1.03);
    }

    .error-message {
        color: #E74C3C;
        font-size: 14px;
        margin-top: 10px;
        text-align: center;
    }

    .alert {
        background-color: #FDEDEC;
        color: #E74C3C;
        padding: 12px 15px;
        border-radius: 12px;
        margin-bottom: 20px;
        font-size: 14px;
        text-align: center;
    }